JP6022188B2 - Tensile material - Google Patents

Description

  The present invention relates to a tensile material such as a shaft brace, a roof brace, or a lower chord material of a string string, which is a structural member of a building, and more particularly to a tensile material using a high strength fiber wire.

  Conventionally, in order to improve the earthquake resistance of a building, it has been reinforced by installing a tension material such as braces (bars) in the frame. Such a tensile material is often made of steel, but has a problem in that it increases the weight of the building because of its large specific gravity. Therefore, attempts have been made to use carbon fibers having light weight and high strength for the brace material. However, it is difficult for carbon fiber to ensure sufficient adhesion to other members.

  Therefore, for example, Patent Document 1 discloses a brace for reinforcement in which a brace material fixture formed of one half plate and another half plate is provided at both ends of a band plate formed of carbon fiber. Apply an adhesive such as epoxy resin to the opposite inner surface of the plate, set the end of the strip in the slit formation recess of one half plate, and attach the other half plate to the end of the strip and the tip of the half plate. A reinforcing brace is described in which the front part and the base part are pressed against each other and a curing tape is wound around the outer surface of the base part of both halves.

JP 2006-348506 A

  As described above, the use of carbon fibers is limited because it is difficult to ensure sufficient adhesion to other members. Moreover, since the brace for reinforcement described in Patent Document 1 fixes the brace material fixture in advance with an adhesive, the dimensions of the brace for reinforcement must be accurately determined in advance. It cannot respond flexibly. Further, when such a reinforcing brace using carbon fiber is installed in a building, initial looseness occurs, and therefore the relationship between tensile force and deformation becomes unstable.

  Therefore, in the present invention, when a high-strength fiber wire such as a carbon fiber wire is used as a tensile material such as a shaft brace, a roof brace, or a string member of a string string, which is a structural member of a building, initial tension is given and stable. An object of the present invention is to provide a tensile material capable of securing tensile force and deformation properties.

  The tensile material of the present invention is a trunk portion in which the end of the high strength fiber wire is inserted from the insertion port side of one end and integrated with the high strength fiber wire, and at least the other end on the side opposite to the insertion port side Tensile material part having a threaded body part, a high strength fiber wire whose end is inserted into the body part of the tensile material part and integrated with the tensile material part, and the side opposite to the insertion port side of the body part The fixing jig is fastened to a screw formed on the other end of the steel plate and fixed to the material to be pulled, and the intermediate portion has a fixing jig formed of extremely low yield point steel.

  In the tensile material of the present invention, a screw is formed at least at the other end opposite to the insertion port side of the body of the tensile material part integrated with the end of the high strength fiber wire, and fixed to this screw. By fastening the jig and adjusting the tightening condition of the screw, it is possible to apply initial tension to the high-strength fiber wire. Also, with this tensile material, the high strength fiber wire has higher yield strength and rigidity than steel, so it is easier to concentrate stress on this high strength fiber wire than other members against the horizontal force during an earthquake. Yes, it is possible to yield the ultra-low yield point steel interposed in the middle part of this tensile material to absorb energy and reduce the shaking during an earthquake.

  Further, the tensile material of the present invention is a trunk portion in which an end of a high strength fiber wire is inserted from one end of the insertion port side and integrated with the high strength fiber wire, and at least the other end opposite to the insertion port side A tensile material part having a body part with a thread formed on the part; a high-strength fiber wire whose end part is inserted into the body part of the tensile material part and integrated with the tensile material part; and an insertion port side of the body part A turnbuckle in which a screw at one end is fastened to a screw formed at the other end on the opposite side, and a fixing jig fastened to a screw at the other end of the turnbuckle and fixed to a tensile material. The part has a fixing jig formed of extremely low yield point steel.

  In the tensile material of the present invention, a screw is formed at least on the other end opposite to the insertion port side of the trunk of the tensile material part integrated with the end of the high strength fiber wire. By tightening the turnbuckle and adjusting the tightening condition of the screw, it is possible to apply initial tension to the high strength fiber wire. Also, with this tensile material, high strength fiber wire has higher proof stress and rigidity than steel material, so it is easier to concentrate stress on this high strength fiber wire than other members against horizontal force during an earthquake. Yes, it is possible to yield the ultra-low yield point steel interposed in the middle part of this tensile material to absorb energy and reduce the shaking during an earthquake.

  Moreover, it is desirable that the inner surface of the body portion has irregularities. Thereby, the adhesive force of the inner surface of a trunk | drum and a high strength fiber wire can be increased, and a high strength fiber wire can be firmly integrated with a tensile material component.

  Further, it is desirable that the body portion has a slit on the side, and the inner diameter on the insertion port side is reduced by tightening. As a result, by tightening the insertion port side of the body part into which the high strength fiber wire is inserted, the adhesion between the inner surface of the body insertion port side and the high strength fiber wire is easily increased, and the high strength fiber wire is pulled. It can be firmly integrated with the material parts.

  In addition, the body part is formed with a screw on the outer peripheral part on the insertion port side, and by tightening the nut to this screw, the inner diameter on the insertion port side of the body part is reduced, so just tightening the nut, The adhesion between the inner surface of the trunk and the high strength fiber wire can be easily increased, and the high strength fiber wire can be firmly integrated with the tension member.

(1) The end of the high strength fiber wire is inserted from the insertion port side of one end and is a body portion integrated with the high strength fiber wire, and a screw is formed at least on the other end opposite to the insertion port side. A tension member having a body part, a high-strength fiber wire whose end is inserted into the body part of the tension member, and integrated with the tension member, and the other end opposite to the insertion port side of the body part A fixing jig that is fastened to a screw formed on and fixed to a material to be pulled, and a fixing jig that is formed of an extremely low yield point steel in the middle part. By tightening and adjusting the tightening condition of the screw, it is possible to apply initial tension to the high strength fiber wire, and at the time of an earthquake, the ultra-low yield point steel interposed in the middle part is yielded to absorb energy. Therefore, it is possible to reduce the shaking, so stable tensile force and deformation It is possible to secure the property.

(2) The end of the high strength fiber wire is inserted from the insertion port side of one end and is a body portion integrated with the high strength fiber wire, and a screw is formed at least on the other end opposite to the insertion port side. A tension member having a body part, a high-strength fiber wire whose end is inserted into the body part of the tension member, and integrated with the tension member, and the other end opposite to the insertion port side of the body part The turnbuckle that is fastened to the screw at one end of the screw formed on the screw and the fixing jig that is fastened to the screw at the other end of the turnbuckle and fixed to the material to be pulled. By having a fixing jig formed of steel, it is possible to fasten the turnbuckle using screws and adjust the tightening degree of the screws, thereby giving initial tension to the high strength fiber wire In the event of an earthquake, yielding a very low yield point steel intervening in the middle To absorb energy Te, it becomes possible to reduce the shaking, it is possible to ensure the properties of deformation and stable tension.

(3) By having irregularities on the inner surface of the body part, the adhesion between the inner surface of the body part and the high strength fiber wire is increased, and the high strength fiber wire is firmly integrated with the tensile material parts. Further, it can be used as a tensile material that can withstand a strong tensile force.

(4) The body part has a slit on the side, and by tightening the inner diameter of the insertion port side by tightening, by tightening the insertion port side of the body part into which the high-strength fiber wire is inserted, Easily increases the adhesion between the inner surface of the body and high-strength fiber wire, firmly integrates the high-strength fiber wire with the tensile material parts, and uses the high-strength fiber wire as a tensile material that can withstand a higher tensile force. It becomes possible.

(5) If the body is threaded on the outer periphery of the insertion port, and the nut is tightened on this screw to reduce the inner diameter on the insertion port side of the body, it is easy to just tighten the nut. To increase the adhesion between the inner surface of the body and the high strength fiber wire, firmly integrate the high strength fiber wire with the tensile material parts, and use the high strength fiber wire as a tensile material that can withstand a stronger tensile force. Is possible.

It is a front view which shows the use condition of the tensile material using the tensile material component in embodiment of this invention. It is an enlarged view of the edge part of the tension | pulling material of FIG. It is sectional drawing of the A section of FIG. It is sectional drawing which shows another example of tensile material components. It is an enlarged view which shows another embodiment of the edge part of the tension | pulling material of FIG. It is an enlarged view which shows another embodiment of the edge part of the tension | pulling material of FIG. It is a figure which shows another embodiment of a tension | pulling material component, Comprising: (a) is a front view, (b) is a right view. It is a right view which shows another embodiment of a tension material component. (A) is a right view which shows another embodiment of a tension | pulling material component, (b), (c), (d) is a front view which shows another embodiment. It is sectional drawing which shows another embodiment of a tension | pulling material component. It is an end view of the longitudinal cross-section which shows another embodiment of a tension | pulling material component. It is an end view of the longitudinal cross-section which shows another embodiment of a tension | pulling material component. It is an end view of the longitudinal cross-section which shows another embodiment of a tension | pulling material component. It is an end view of the longitudinal cross-section which shows another embodiment of a tension | pulling material component. FIG. 12 is a development view of the inner surface of the tensile material part of FIGS. 11 (a), (b), and (c). It is a schematic diagram of the string-like reinforcing fiber composite of the present invention, (a) is an external view, (b) is a cross-sectional view (string-like carbon fiber bundles constituting the core wire: seven). It is a figure showing arrangement | positioning of the string-like carbon fiber bundle in the core wire of the string-like reinforcing fiber composite of this invention, and this string-like carbon fiber bundle is (a) 1, (b) 3, and (c) 7 respectively. It is an example of a book. It is a schematic diagram of a resin coating apparatus. It is a schematic diagram of the high strength fiber wire according to Embodiment 2-1 of the present invention. It is a figure which shows the 1st modification of the high strength fiber wire of Embodiment 2-1 of this invention. It is a figure which shows the 2nd modification of the high strength fiber wire of Embodiment 2-1 of this invention. It is a figure for demonstrating the manufacturing method of the high strength fiber wire of this invention. It is a figure for demonstrating another manufacturing method of the high strength fiber wire of this invention. It is a schematic diagram which shows the high strength fiber wire which concerns on Embodiment 2-2 of this invention, (a) is a side surface partial enlarged view, (b) is sectional drawing (high strength fiber bundle: 19 pieces). It is a schematic diagram which shows the high strength fiber wire which concerns on Embodiment 2-3 of this invention, (a) is an external view, (b) is sectional drawing (high strength fiber bundle: 19 pieces). It is a photograph of the structural member of the high-strength fiber wire of Example 2-1, (a) is an enlarged photograph of the high-strength fiber bundle consisting of a core wire bundled with high-strength fiber yarns and a restraint material, (b) It is the photograph of the state (before integration with a solidifying agent) which has arrange | positioned the cylindrical body which consists of fiber materials in the outer periphery of the bundle which arranged 40 high-strength fiber bundles of (a). It is a photograph of the high-strength fiber wire of Example 2-2, (a) is an enlarged photograph of a high-strength fiber bundle composed of a core wire bundled with high-strength fiber yarns and a restraint material, and (b) is (a). It is the photograph of the state (before integration by a solidifying agent) which has arrange | positioned the cylindrical body which consists of fiber materials in the outer periphery of the bundle which arranged 40 high-strength fiber bundles. It is a photograph for demonstrating the state which fixed the high-strength fiber wire of Example 2-2 to the tension | pulling material component, (a) is before insertion of the high-strength fiber wire end (thing separated into the high-strength fiber bundle), ( b) is a photograph after insertion (after fixing) of the end of the high strength fiber wire. It is a photograph for demonstrating the state which fixed the high-strength fiber wire of Example 2-3 to the tension | pulling material components, and is a photograph before insertion of the high-strength fiber wire end (thing which is not disperse | distributed to a high-strength fiber bundle).

  Hereinafter, embodiments of the high-strength fiber wire according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments, and may be arbitrarily set within the scope of the present invention. Can be changed and implemented. Further, when the expression “to” is used in the present specification, it is used as an expression including numerical values before and after the expression.

(Embodiment 1)
FIG. 1 is a front view showing a usage state of a tensile material using a tensile material component according to an embodiment of the present invention, FIG. 2 is an enlarged view of an end portion of the tensile material in FIG. 1, and FIG. It is sectional drawing.

  As shown in FIG. 1 and FIG. 2, the tensile member 1 in the embodiment of the present invention includes a carbon fiber wire 2 as a high-strength fiber wire made of a structural wire material made of carbon fiber, and both ends of the carbon fiber wire 2. A tension member 3 integrated with the fixing material 4 (see FIG. 3), a turnbuckle 6 having one end fastened to the tension member 3, and a beam of the building fastened to the other end of the turnbuckle 6. And a fixing jig 7 that is fixed to a building connection plate P as a material to be pulled provided at a corner portion such as a column. The details of the carbon fiber wire 2 will be described later.

  The tensile material part 3 is composed of a steel pipe 3a as a pipe material that constitutes a body portion into which the end portion of the carbon fiber wire 2 is inserted from the insertion port 3b side of one end. The steel pipe 3a is a cylindrical steel pipe, and the inner diameter thereof is larger than the outer diameter of the carbon fiber wire 2 so that the carbon fiber wire 2 can be inserted. In addition, the steel pipe 3a can be formed of another material in addition to a synthetic resin such as FRP. In short, any material can be used as long as the tensile material component 3 can be firmly integrated with the carbon fiber wire 2.

The fixing material 4 is an adhesive, a resin material, or the like that fills the gap between the steel pipe 3a and the carbon fiber wire 2 and firmly integrates the tensile material component 3 with the carbon fiber wire 2.
As the fixing material 4, a thermosetting resin, a thermoplastic resin, a moisture curable resin, cement, or the like can be used.
Examples of the thermosetting resin include phenol resin, epoxy resin, melamine resin, urea resin, unsaturated polyester resin, urethane resin, alkyd resin, and polyimide resin.
Thermoplastic resins include polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polytetrafluoroethylene, ABS resin, AS resin, acrylic resin, polyamide resin, polyacetal resin, polycarbonate resin, modified polyphenylene ether, polybutylene terephthalate. , Polyethylene terephthalate, cyclic polyolefin, polyphenylene sulfide (PPS), polysulfone, polyethersulfone, amorphous polyarylate, liquid crystal polymer, polyetheretherketone (PEEK), polyimide resin, polyamideimide, urethane resin and the like.
Examples of the moisture curable resin include urethane resins and modified silicone resins which are resins in which isocyanate groups are generated by moisture.
Examples of the cement include gypsum, quicklime, and a material capable of exhibiting high expansion pressure using quicklime and silicate.

  A screw (male screw) 5 that can be fastened to a screw (female screw) 6a formed at one end of the turnbuckle 6 is formed on the outer peripheral portion of the steel pipe 3a. The fixing jig 7 includes a damping member 8 formed of round steel having a screw (male screw) 8a that can be fastened to a screw (female screw) 6b formed at the other end of the turnbuckle 6 at one end, The damping member 8 is composed of a plate 9 integrated by welding or the like. The vibration control member 8 may be flat steel or the like.

  The damping member 8 is made of extremely low yield point steel, and its central cross section is made smaller than the end as shown by the solid line in FIG. 2, or the same as the end as shown by the broken line in FIG. Is possible. This damping member 8 absorbs energy during an earthquake by yielding ahead of other members. The plate 9 has a hole 9a that is joined to the building connection plate P by a bolt and a nut (not shown).

  The turnbuckle 6 is a known one, and has a right-hand thread (female thread) at one end and a left-hand thread (female thread) at the other end. In this embodiment, the screw 5 formed on the outer peripheral portion of the steel pipe 3a is a right-hand screw, and the screw 8a formed on the fixing jig 7 is a left-hand screw. By rotating the turnbuckle 6, the screw 5 , 8a are tightened or loosened so that the tension can be adjusted.

  In the tension member 1 configured as described above, the plate 9 is joined to the building connection plate P with bolts and nuts, and the turnbuckle 6 is rotated to adjust the tightening condition of the screw 5, whereby the initial tension is applied to the carbon fiber wire 2. Can be given. Moreover, in this tension | tensile_strength material 1, since the carbon fiber wire 2 has higher yield strength and rigidity than steel materials, it is easy to concentrate stress on this carbon fiber wire more than other members with respect to the horizontal force at the time of an earthquake. is there. In addition, since the damping member 8 made of extremely low yield point steel is interposed in the middle of the tensile material 1, the damping member 8 is yielded during an earthquake to absorb energy and reduce shaking during the earthquake. It is possible to secure a stable tensile force and deformation properties. In particular, from the viewpoint of damping, it is preferable that the damping member 8 made of the carbon fiber wire 2 and the extremely low yield point steel is arranged in series.

  In addition, it is desirable to use the fixing material 4 for the integration of the tensile material part 3 and the carbon fiber wire 2, but if the tensile material part 3 can be firmly integrated with the carbon fiber wire 2 by fitting or the like, It is also possible to omit the fixing material 4. Moreover, the screw 5 formed in the outer peripheral part of the steel pipe 3a should just be formed in the other end part on the opposite side to the insertion port 3b side, and should just be able to fasten the turnbuckle 6 and to adjust tension | tensile_strength. For example, as shown in FIG. 4, a steel pipe 16a whose body is integrated with the carbon fiber wire 2 by the fixing material 4 in the same manner as described above, and a steel bar fixed to the steel pipe 16a by welding, screwing, or the like. It is also possible to adopt a configuration in which the tension member 16 is constituted by 16c, and a screw 16d is formed at the other end of the steel rod 16c opposite to the insertion port 16b side of the steel pipe 16a. Further, the plate 9 may be joined to the building connection plate P by welding or the like. The same applies to the following.

  In addition, as shown in FIG. 1, in the tension | tensile_strength material 1 in the said embodiment, the tensile material component 3, the turnbuckle 6 and the fixing jig 7 are provided in the both ends of the carbon fiber wire 2, respectively, and both turnbuckle 6 It is possible to adjust the tightening condition of the screw 5 and to absorb the energy in the event of an earthquake with both fixing jigs 7 made of extremely low yield point steel, but only one of them is configured as shown in FIG. On the other hand, a steel pipe firmly integrated with the end of the carbon fiber wire 2 may be joined to the building connection plate P directly or via a plate connected to the steel pipe by welding or the like. Or it is also possible to set it as the structure fixed to the building connection plate P as shown in FIG.

  As shown in FIG. 5, one end of the tension member 10 is integrated with the carbon fiber wire 2 by the fixing member 4 (see FIG. 3), and one end of the tension member 10 is fastened to the building. A fixing jig 11 fixed to the connection plate P is provided. The fixing jig 11 includes a steel pipe 12 formed with a screw (internal thread) 12a to which a screw 5 formed on the outer peripheral portion of the tensile member 3 can be fastened, and a plate 13 integrated with the steel pipe 12 by welding or the like. It consists of and. The plate 13 has a hole 13a that is joined to the building connection plate P by a bolt / nut (not shown).

  Even in such a configuration, it is possible to adjust the tightening degree of the screw 5 by one turnbuckle 6 and to absorb energy at the time of earthquake by one fixing jig 7 made of extremely low yield point steel. Is possible. In the example shown in FIG. 5, a screw 5 that is a male screw is formed on the outer peripheral portion of the tension member 3 and the screw 5 is fastened to a screw 12 a that is a female screw of the fixing jig 11. It is also possible to configure the male screw and the female screw in reverse.

  Moreover, it can replace with the fixing jig 11 shown in FIG. 5, and can also be set as the fixing jig 15 which used the damping part 14 formed in the middle part as shown in FIG. Even in such a configuration, by adjusting the tightening degree of the screw 5, it is possible to apply initial tension to the carbon fiber wire 2, and in the middle portion of the fixing jig 15, a vibration control made of extremely low yield point steel. Since the part 14 is interposed, it is possible to surrender the vibration control part 14 and absorb energy in the event of an earthquake, and to reduce the shaking at the time of the earthquake, ensuring a stable tensile force and deformation properties. Can do. In addition, you may provide this fixing jig 15 in both the tensile material components 3 of the both ends of the carbon fiber wire 2. FIG. Moreover, the fixing jig 15 may be provided on one side of the tensile member 3 at both ends of the carbon fiber wire 2 and the fixing jig 11 may be provided on the other side.

Next, another embodiment of the tension member 3 will be described.
FIGS. 7A and 7B are diagrams showing another embodiment of the tension member, wherein FIG. 7A is a front view and FIG. 7B is a right side view. In the tensile material component shown in FIG. 7, a slit 20 a is formed on one side of the body 20 from one end to the other end. The body portion 20 is tightened from the outside in a state where the carbon fiber wire 2 is inserted, so that the inner diameter thereof is reduced within the range of the width of the slit 20 a and is integrated with the carbon fiber wire 2. . Further, on the outer peripheral portion of the body portion 20, a screw forming portion 20 b that constitutes a screw similar to the screw 5 described above is formed in a state of being tightened from the outside.

  In this tensile material part, the carbon fiber wire 2 is inserted into the inside of the body portion 20, the fixing material 4 is filled, and then the body portion 20 is tightened to easily fix the inner surface of the body portion 20 to the carbon fiber wire 2 and the fixing portion. The adhesion with the material 4 can be increased, and the carbon fiber wire 2 can be firmly integrated. The body 20 can be tightened with a nut using a screw formed by the screw forming portion 20b on the outer periphery. Further, when the steel pipe 7 is tightened, the adhesion between the inner surface of the steel pipe 7 and the carbon fiber wire 2 may be sufficiently secured even if the fixing material 4 is omitted.

  Alternatively, as shown in FIG. 8, the other side opposite to the insertion port 21c side into which the end portion of the carbon fiber wire 2 of the trunk portion 21 in which the slit 21a is formed on the side from one end portion to the other end portion is inserted. It is also possible to form a screw forming portion 21b similar to the screw forming portion 20b in FIG. 7 only at the end, and to tighten the portion 21d where the screw forming portion 21b is not formed from the outside by a ring or the like. It is.

  Or as shown to (a) of FIG. 9, the above-mentioned screw | thread 5 is provided in the part by which the slit 22a on the opposite side to the insertion port 22c side of the trunk | drum 22 in which the slit 22a which does not reach to one end part was formed is formed. It is also possible to adopt a configuration in which the same screw 22b is formed. As a result, the portion of the screw 22b in which the slit 22a is not formed is stable when the turnbuckle 6 or the fixing jig 11 is fixed because the outer shape does not change by tightening the ring or the like. As for the number of slits 22a, it is possible to form a plurality of slits 22a, two, three, four, etc. as shown in the front views of FIGS. 9B, 9C, and 9D.

  FIG. 10 is a cross-sectional view showing still another embodiment of the tension member. In the example shown in FIG. 10A, the inner surface of the end portion on the insertion port 30a side of the trunk portion 30 of the tensile material part is a curved surface 30b. Thereby, stress can be prevented from concentrating from the end portion where the curved surface 30b is formed in the carbon fiber wire 2 inserted into the body portion 30 through the insertion port 30a and integrated by the fixing material 4. It becomes possible to prevent the carbon fiber wire 2 from being damaged.

  In the example shown in FIG. 10 (b), the inner surface of the body portion 31 has irregularities 31 a. As a result, when the carbon fiber wire 2 is inserted into the body 31 and integrated by the fixing material 4, the adhesion between the inner surface of the body 31 and the carbon fiber wire 2 and the fixing material 4 increases, and the carbon fiber The wire 2 can be firmly integrated with the body 31. Note that the curved surface 31b of FIG. If the irregularities 31a are formed on the inner surface of the barrel 31 by simply threading it into the inner and outer peripheries of an ordinary steel pipe, the barrel 31 can be easily manufactured, and the carbon fiber wire 2 is firmly attached to the barrel 31. It is preferable because it can be integrated into The same applies to the other examples described in this specification.

  In the example shown in FIG. 10C, the inner diameter of the body portion 32 is narrowed from the end portion on the insertion port 32 a side of the carbon fiber wire 2 toward the back side (right side in the drawing). The body portion 32 is similar to the body portions 20, 21, and 22 shown in FIGS. 5 to 9, and the same slits as the slits 20a, 21a, and 22a are formed.

  Thereby, since the carbon fiber wire 2 is inserted in the trunk | drum 32 from the insertion port 32a side with a wide internal diameter, it is easy to insert. Further, when the body portion 32 is tightened with a ring or the like on the side of the insertion port 32a having a larger inner diameter, the difference in inner diameter in the length direction (the left-right direction in the figure) of the body portion 32 disappears, so that the carbon fiber wire 2 As a result, there is no significant difference over the entire length, and a tightening pressure is applied, so that the carbon fiber wire 2 can be fixed over the entire body portion 32. Moreover, since it can prevent that a strong shearing force is partially applied to the carbon fiber wire 2 in the trunk | drum 32, the fracture | rupture of the carbon fiber wire 2 can also be prevented.

  Further, in the example shown in FIG. 10 (d), conversely to FIG. 10 (c), the inner diameter of the body portion 33 is directed from the end on the insertion port 33a side of the carbon fiber wire 2 toward the back side (right side in the figure). It has become wide. The outer side of the body part 33 is the same as the body part 32 shown in FIG. 10C, and a slit is formed. As a result, by tightening the body portion 33 with a ring or the like, a particularly strong tightening force can be applied to the carbon fiber wire 2 inserted into the body portion 33 from the side of the insertion port 33a having a narrow inner diameter at the joint portion. The carbon fiber wire 2 can be prevented from coming out of the body portion 33. Even when there is no slit, when the carbon fiber wire 2 is integrated by the fixing material 4, the carbon fiber wire 2 is more difficult to come out because the insertion opening side of the carbon fiber wire 2 is narrow. Moreover, about the fracture | rupture of the carbon fiber wire 2, it is possible to prevent by using the below-mentioned string-like reinforcing fiber composite.

  Further, in the example shown in FIG. 10 (e), as shown in FIG. 10 (d), the inner diameter of the body portion 33 extends from the end on the insertion port 33 a side of the carbon fiber wire 2 to the back side (right side in the figure). It has a plate 34 having a convex portion 34a toward the inside of the body portion 33 at the end opposite to the insertion port 33a. As a result, when the carbon fiber wire 2 is inserted into the body portion 33 from the insertion port 33a side where the inner diameter is narrow and is pierced into the convex portion 34a of the plate 34, the outer diameter of the carbon fiber wire 2 is increased. And if it integrates with the adhering material 4, since the inlet_port | entrance of the trunk | drum 33 is narrow, the carbon fiber wire 2 will become more difficult to come off.

  11 to 14 are end views of longitudinal sections showing still another embodiment of the body portion. In addition, in FIGS. 11-14, the screw formation part of the outer peripheral part of each trunk | drum 40-56 is abbreviate | omitting illustration.

  A trunk portion 40 shown in FIG. 11 (a) replaces the irregularities 31a of the trunk portion 31 shown in FIG. 10 (b), and has a concave portion 40a having a rectangular shape with a width L1 and a height H1, a width L2, and a height H1. It has the unevenness | corrugation which consists of the convex part 40b of a cross-sectional rectangular shape. The concave portion 40a and the convex portion 40b are formed in a ring shape on the inner surface as shown in FIG. The widths L1 and L2 and the height H1 are arbitrary, and the number of the concave portions 40a and the convex portions 40b is also arbitrary. Similarly, the body 41 shown in FIG. 11B has concave and convex portions 41a having a width L1 and a height H1, and a convex portion having a rectangular shape and a width L2 and a height H1. 41b. However, the concave portions 41a and the convex portions 41b are alternately formed in a spiral shape as shown in FIG. The widths L1 and L2, the height H1, and the number of turns of the spiral are arbitrary. In addition, as shown in FIG. 15C, the body portion 42 shown in FIG. 11C has an island-like convex portion 42b having a width L2 × W2, with an interval (concave portion 42a) having a width L1 × W1. Staggered arrangement. Note that the widths L1, L2, W1, W2, the height H1, and the number of convex portions 42b are arbitrary. Further, the convex portions 42b are not limited to the staggered arrangement, and can be arbitrarily arranged.

  Also, the body portions 43, 44, and 45 shown in FIGS. 11D, 11E, and 11F are respectively recessed portions 40a 41A, and 42A shown in FIGS. 11A, 11B, and 11C. The cross-sectional shapes of the convex portions 40b, 41b, and 42b are trapezoidal concave portions 43a, 44a, and 45a and convex portions 43b, 44b, and 45b. 12A and 12B are triangular protrusions 46b and 47b in which the cross-sectional shapes of the protrusions 43b and 45b in FIGS. It is what. The cross-sectional shape of the recesses 46a and 47a is the same trapezoid as that of the recesses 43a and 45a. Also, the trunk portions 48 and 49 shown in FIGS. 12C and 12D are respectively semicircular convex portions having cross-sectional shapes of the convex portions 43b and 45b shown in FIGS. 11D and 11F. 48b and 49b. The cross-sectional shape of the recesses 48a and 49a is a substantially trapezoidal shape in which a line segment connecting both ends of the upper and lower trapezoids has an arc shape. When the carbon fiber wire 2 is inserted into the body portions 40 to 49 having unevenness on the inner surface of such a body portion and integrated by the fixing material 4, the unevenness on the inner surface of the body portions 40 to 49 and the carbon fiber wire 2. And the adhesive force with the fixing material 4 increases, and the carbon fiber wire 2 can be firmly integrated with the trunk portion 10.

  The body portions 50 and 51 shown in FIGS. 13A and 13B have the same inner diameter as that of the body portion 11 shown in FIG. 10D and the end portion of the carbon fiber wire 2. It is wider from the end of the insertion side (left side in the figure) toward the back side (right side in the figure). Concave portions 50a and 51a and convex portions 50b and 51b formed on the inner surfaces of the respective trunk portions 50 and 51 conform to the concave portions 40a and 42a and the convex portions 40b and 42b shown in FIGS. 11 (a) and 11 (c), respectively. In these trunk portions 50 and 51, when the carbon fiber wire 2 is integrated by the fixing material 4, the insertion side of the carbon fiber wire 2 is narrow, so that the carbon fiber wire 2 is more difficult to come off. As in the case described with reference to FIG. 10 (d), the body portions 50 and 51 are inserted into the body portions 50 and 51 from the narrower one (the left side in the figure) by tightening them with a ring or the like. It is also possible to apply a particularly strong tightening force to the carbon fiber wire 2 at the joint portion to prevent the carbon fiber wire 2 from coming out of the body portions 50 and 51.

  Further, the body portions 52 and 53 shown in FIGS. 13C and 13D are respectively provided with recesses 52a and 53a similar to the recesses 50a and 51a and the protrusions 50b and 51b shown in FIGS. Although it has the convex parts 52b and 53b, the outer periphery of the trunk | drum 52 and 53 is further thick toward the back | inner side (right side of a figure) from the edge part of the side (left side of a figure) in which the edge part of the carbon fiber wire 2 is inserted. It becomes the taper shape which becomes. In addition to the functions and effects of the body parts 50 and 51 described above, the body parts 52 and 53 are moved from the narrower outer periphery (the left side in the figure) to the thicker side (the right side in the figure) with a ring or the like. When tightening, the difference in inner diameter in the longitudinal direction (left and right direction in the figure) of the body portions 52 and 53 disappears, so that there is no large difference over the entire carbon fiber wire 2 so that tightening pressure is applied. Thus, the carbon fiber wire 2 can be fixed by the entire body portions 52 and 53. Moreover, since it can prevent that a strong shear force is partially applied to the carbon fiber wire 2 in the trunk | drum 52,53, the fracture | rupture of the carbon fiber wire 2 can also be prevented.

  Further, the body portions 54, 55, and 56 shown in FIG. 14 are obtained by omitting the irregularities on the inner surfaces of the body portions 40, 50, and 52 shown in FIGS. 11 (a), 13 (a), and 13 (c), respectively. It is. However, the inner diameter of the end portion on the side (left side in the figure) where the end portion of the carbon fiber wire 2 is inserted is reduced. Also in these trunk portions 54, 55, 56, the carbon fiber wire 2 can be inserted into the trunk portions 54, 55, 56 and integrated by the fixing material 4, and the carbon fiber wire 2 is fixed to the fixing material 4. Is integrated, the carbon fiber wire 2 becomes more difficult to come out because the insertion port side of the carbon fiber wire 2 is narrow.

  In particular, in the body portion 55, as in the case of the body portion 50 shown in FIG. 13A, the inner diameter is from the end portion on the side (left side in the drawing) where the end of the carbon fiber wire 2 is inserted to the back side (right side in the drawing). Therefore, the carbon fiber wire 2 integrated by the fixing material 4 is more difficult to come off. Further, when the body portion 55 is tightened with a ring or the like with a wider inner diameter (right side in the figure), the difference in inner diameter in the length direction (left and right direction in the figure) of the body portion 55 disappears. There is no significant difference over the entire wire 2 and a tightening pressure is applied, and the carbon fiber wire 2 can be fixed over the entire body 55. Moreover, since it can prevent that the strong shearing force is partially applied to the carbon fiber wire 2 in the trunk | drum 55, the fracture | rupture of the carbon fiber wire 2 can also be prevented.

  In addition, in addition to the effects of the body portion 55, the body portion 56 is tightened with a ring or the like from the narrow outer periphery (left side in the figure) toward the thicker side (right side in the figure). Since the difference in the inner diameter in the length direction (left and right direction in the figure) of the portion 56 disappears, there is no large difference over the entire carbon fiber wire 2 and the tightening pressure is applied. The fiber wire 2 can be fixed. Moreover, since it can prevent that a strong shearing force is partially applied to the carbon fiber wire 2 in the trunk | drum 56, the fracture | rupture of the carbon fiber wire 2 can also be prevented.

Next, the carbon fiber wire 2 will be described in detail.
The carbon fiber wire 2 in the above embodiment includes an inner layer made of a core wire (preferably circular in cross section) of a string-like carbon fiber bundle, and an intermediate layer containing a resin provided around the core wire, as shown in a schematic diagram in FIG. , A string-like reinforcing fiber composite comprising an outer layer made of a knitted tubular cord provided around the intermediate layer, and other layers between the intermediate layer and the outer layer or outside the outer layer as necessary It has a multi-layer structure having layers, and has shear strength due to the presence of the intermediate layer and the outer layer while maintaining excellent mechanical properties such as tensile strength and elastic modulus derived from the carbon fiber as the core wire.

In addition, although mentioned later in detail, one of the preferable aspects of the carbon fiber wire 2 is a string-like reinforcing fiber composite in which the intermediate layer is composed of a plurality of reinforcing yarns arranged coaxially with the resin and the core wire.
By including the reinforcing yarn arranged in this way in the intermediate layer, the carbon fiber yarn used for the core wire when a lateral force is applied to the carbon fiber during storage, transportation, handling or use It is possible to suppress breakage or shearing.

From the viewpoint of strength, a preferred embodiment of the carbon fiber wire 2 is a string-like reinforcing fiber composite in which the inner layer, the intermediate layer, and the outer layer are bonded and integrated by the same resin as that forming the intermediate layer. . The intermediate layer may include the reinforcing yarn.
If the adhesiveness between the inner layer with high tensile strength and the intermediate layer and the outer layer is insufficient, the tensile strength derived from the carbon fiber yarn that is the inner layer cannot be obtained, and the outer layer portion or the outer layer and the intermediate layer are torn off when pulled. There is a risk of being. Moreover, when the adhesiveness between the intermediate layer and the outer layer or the inner layer and the intermediate layer is not sufficient, only the intermediate layer and the outer layer or the outer layer may come off during construction.
On the other hand, in the string-like reinforcing fiber composite of the carbon fiber wire 2, the inner layer, the intermediate layer, and the outer layer are integrated with resin, so that the adhesion of each layer is improved and the above problem does not occur.
In particular, the resin used to integrate the inner layer, the intermediate layer and the outer layer is the same resin as the resin constituting the intermediate layer. Can be avoided.

In addition, as a resin which comprises the said intermediate | middle layer, although both a thermoplastic resin and a thermosetting resin can be used, it is preferable that it is a thermoplastic resin.
By using this resin as a thermoplastic resin, it can be stored and transported by being wound around a drum or the like by having heat by applying heat.

The diameter of the string-like carbon fiber composite of the carbon fiber wire 2 is arbitrary depending on the application and is not particularly limited, but is usually about 1 mm to 150 mm.
In addition, the length of the string-like carbon fiber composite of the carbon fiber wire 2 is arbitrary, and may be determined according to the application, etc., but is usually about several tens of centimeters to several hundreds of meters, but longer than this. There may be.

The string-like reinforcing fiber composite of the carbon fiber wire 2 can take various shapes such as a rod shape and a curved shape. In particular, when a thermoplastic resin is used as the resin constituting the intermediate layer (including the case where the inner layer, the intermediate layer, and the outer layer are bonded and integrated with the same resin as the intermediate layer), the core wire The cord-like carbon fiber bundle to be formed has a very high tensile strength, the outer layer has an appropriate flexibility, and the intermediate layer provided between them includes a thermoplastic resin, so that the thermoplastic resin is softened. Since it can be deformed by heating to a temperature, it can be formed not only in a rod shape but also in a curvilinear shape, or a shape wound around a spool.
Therefore, when storing and moving, the long string-like reinforcing fiber composite is wound up, heated when used, drawn to the required length, cut, and used as a rod-like straight line You can also.

  Hereinafter, the core wire (inner layer), the intermediate layer, and the outer layer constituting the string-like reinforcing fiber composite of the carbon fiber wire 2 will be described.

[Core wire (inner layer)]
The core wire constituting the inner layer of the string-like reinforcing fiber composite of the carbon fiber wire 2 is composed of one or a plurality of string-like carbon fiber bundles.
This string-like carbon fiber bundle is a carbon fiber yarn alone, or a mixture of carbon fiber yarn and yarn made of glass fiber, basalt fiber, aramid fiber, and other organic fibers as long as its strength and bendability are not impaired. Usually, it is a thread-like body having a circular cross section in which thousands to millions of carbon fiber yarns (filaments) are bundled. The carbon fiber yarn constituting the carbon fiber bundle is preferably untwisted because the shearing force and the tensile strength are reduced when the carbon fiber yarn is twisted. That is, it is preferable that the carbon fiber yarns constituting the inner layer are arranged to be aligned. In the present specification, “no twist” means a twist of less than 10 times / m. More preferably, it is less than 5 times / m, and more preferably 0 times / m. Note that the present invention is not limited to this.

  In addition, as a string-like carbon fiber bundle, any form of string-like carbon fiber such as twisted string, braided, knitted string, woven string, tie string, bundle string, cut string, synthetic string, etc. It is possible to use a bundle. On the other hand, when there are entanglement points consisting of the carbon fiber yarn or other yarns in the string-like carbon fiber bundle, the shearing force in the lateral direction is easily applied to the carbon fiber yarn at the entanglement point, and the carbon fiber yarn is cut. As a result, the tensile strength of the string-like carbon fiber bundle may be reduced. Further, like the carbon fiber yarn, it is preferable that the string-like carbon fiber bundle is not twisted. For this reason, among the above-described embodiments, the string-like carbon fiber bundle is preferably one in which carbon fiber yarns are aligned so that there is no twist and no entanglement point is generated.

As the carbon fiber yarn constituting the string-like carbon fiber bundle, any carbon fiber yarn such as PAN and pitch can be used.
The string-like carbon fiber bundle is preferably temporarily bonded with an adhesive resin (referred to as a sizing agent or a converging agent) or the like in order to prevent the carbon fiber yarns from being loosened. As the sizing agent and the sizing agent, those having high affinity with the resin constituting the intermediate layer may be used.

  The average diameter of the carbon fiber yarns constituting the string-like carbon fiber bundle is not particularly limited, but is usually in the range of 1 to 20 μm from the viewpoint of mechanical properties and workability of the obtained molded product. In the string-like carbon fiber bundle used for the core wire, the outer diameter is determined by the thickness and number of carbon fiber yarns used, and is usually about 1 mm to 100 mm.

The string-like carbon fiber bundles are usually shipped in 12k consisting of 12,000 carbon fiber yarns and 24k consisting of 24,000 carbon fiber yarns. In addition, the cord-like carbon fiber bundles are composed of 6000 carbon fiber yarns or 48000 carbon fiber yarns. Some consist of the above.
In the string-like reinforcing fiber composite of the carbon fiber wire 2, when a thicker core wire is required, it may be arranged so as to bundle a plurality of string-like carbon fiber bundles, and in particular, arranged so that the cross section is circular. It is preferable.
FIG. 17 illustrates the case where the string-like carbon fiber bundles constituting the core wire are (a) 1, (b) 3, and (c) 7.
Here, the diameter d of the core wire is the diameter of a virtual circle in contact with the outer periphery of the string-like carbon fiber bundle constituting the core wire when the cross section is circular (see FIG. 17). The major axis direction is the core wire diameter d.
In addition, the number of string-like carbon fiber bundles constituting the core wire is not limited to this, and is appropriately determined according to the purpose of use. For example, the string-like reinforcing fiber composite of the carbon fiber wire 2 is used as a brace material. In that case, the diameter d of the core wire is about 1 mm to 100 mm. The diameter d of the core wire can be measured with a caliper, or the cross section can be measured with a microscope (including an electron microscope).
When a plurality of string-like carbon fiber bundles are used, the carbon fiber yarns constituting each string-like carbon fiber bundle may be converged and integrated to form one string-like carbon fiber bundle as a whole. .

  The length of the string-like carbon fiber bundle is appropriately determined depending on the purpose of use, and is usually about several tens of centimeters to several hundreds of meters.

Here, it is preferable that the string-like carbon fiber bundle constituting the core wire is coated with a resin. The cord-like carbon fiber bundle constituting the core wire is coated with a resin. When the core wire is constituted by one cord-like carbon fiber bundle, the cord-like carbon fiber bundle is coated with a resin. Say something. In this case, the internal carbon fiber yarns constituting the string-like carbon fiber bundle may be bonded and integrated with resin.
In addition, when the core wire is composed of a plurality of string-like carbon fiber bundles,
(1) Each string-like carbon fiber bundle is individually coated with resin, but the entire core wire is not bonded with resin and is not integrated,
(2) Each string-like carbon fiber bundle is not individually coated with resin, but as the whole core wire, the string-like carbon fiber bundle is coated with resin and bonded and integrated,
(3) Each cord-like carbon fiber bundle is individually coated with a resin, and the entire core wire is bonded and integrated with the resin.

Although the string-like carbon fiber bundle is coated with a resin, depending on the production method, since the resin is present on the surface of the core wire in advance, the adhesion with the intermediate layer is improved. Strength as a body improves.
When a plurality of cord-like carbon fiber bundles are used as the core wires, the core wires in which the cord-like carbon fiber bundles are bonded and integrated by resin as in (2) and (3) above. As a result, the strength is improved.
In particular, from the viewpoint of strength, it is preferable that the thermoplastic resin is impregnated into the inside of the cord-like carbon fiber bundle, and the carbon fiber yarn inside the cord-like carbon fiber bundle is also bonded and integrated with the resin.

The resin used may be either a thermoplastic resin or a thermosetting resin, but a thermoplastic resin is preferably used in order to provide variability.
Preferred examples include polyetheretherketone (PEEK), polypropylene, polyethylene, polystyrene, polyamide (nylon 6, nylon 66, nylon 12, nylon 42, etc.), ABS resin, acrylic resin, vinyl chloride resin, vinylidene chloride resin. , Polyphenylene oxide, polybutylene terephthalate, polyethylene terephthalate, polysulfone, polyethersulfone, polyetherimide, polyarylate, epoxy resin, urethane resin, polycarbonate resin, polyacetal resin, and the like, but are not limited thereto.
Among these, polyether ether ketone (PEEK), acrylic resin, vinyl chloride resin, vinylidene chloride resin, polyethylene resin, epoxy resin, urethane resin, polycarbonate resin, and polyacetal resin are preferable from the viewpoint of durability against acids and alkalis.
The resin used for the coating of the string-like carbon fiber bundle and the resin constituting the intermediate layer need not be the same as long as each has an adhesive property, but in order to further improve the adhesive force. It is preferable to use the same resin.

The method of coating the above-described resin on the string-like carbon fiber bundle is not particularly limited, such as coating the carbon fiber with a spray or a brush, but from the viewpoint of productivity, a dip-nip method or a die was used. An apparatus as shown in FIG. 18 can be used.
In the case where a thermoplastic resin is coated as a resin, when a device as shown in FIG. 18 is used, a string-like carbon fiber bundle supplied from a creel is melted or a thermoplastic resin dissolved in a solvent, or thermoplastic. It can be coated by dipping in an emulsion containing resin, then squeezing with mangle if necessary, removing excess thermoplastic resin and adjusting the wire diameter with a die, and then drying and curing as necessary. .

[Middle layer]
The intermediate layer of the string-like reinforcing fiber composite of the carbon fiber wire 2 contains a resin and is provided between the core wire (inner layer) and the outer layer.
In the string-like reinforcing fiber composite of the carbon fiber wire 2, the intermediate layer prevents the core wire and the outer layer from coming into direct contact, and bonds the core wire and the outer layer with the resin contained. Furthermore, when the resin constituting the intermediate layer is a thermoplastic resin, it is hard at room temperature, but has an appropriate flexibility in the softening temperature range, so it is heated above the softening temperature of the thermoplastic resin. By doing so, the string-like reinforcing fiber composite of the carbon fiber wire 2 can be bent into various shapes. Therefore, the string-like reinforcing fiber composite of the carbon fiber wire 2 can be wound not only in a rod shape but also in a curvilinear shape and further wound around a bobbin.
In addition, you may provide another layer (for example, contact bonding layer etc.) between this intermediate | middle layer and an outer layer in the range which does not impair the effect of the carbon fiber wire 2. FIG.

The resin used for the intermediate layer may be either a thermoplastic resin or a thermosetting resin, and has a high bondability with the string-like carbon fiber bundle constituting the core wire and the knitted tubular string constituting the outer layer. It is done. In particular, when a thermoplastic resin is used, an appropriate one is selected in consideration of a balance between curability at normal temperature and flexibility during heating.
Preferred examples include polypropylene, polyethylene, polyetheretherketone (PEEK), polystyrene, polyamide (nylon 6, nylon 66, nylon 12, nylon 42, etc.), ABS resin, acrylic resin, vinyl chloride resin, vinylidene chloride resin. , Polyphenylene oxide, polybutylene terephthalate, polyethylene terephthalate, polysulfone, polyethersulfone, polyetherimide, polyarylate, polyester resin, epoxy resin, urethane resin, polycarbonate resin, polyacetal resin and the like.
Among these, acrylic resin, vinyl chloride resin, vinylidene chloride resin, polyethylene resin, epoxy resin, urethane resin, polycarbonate resin, and polyacetal resin are preferable from the viewpoint of durability against acids and alkalis.
In addition, when a thermoplastic resin is used for the intermediate layer, any thermoplastic resin may be used in consideration of the application and the heat resistance of the carbon fiber yarn, the following reinforcing yarn, and the material forming the outer layer, but the softening temperature is 50. A thermoplastic resin having a temperature of about 200 ° C. to 200 ° C. is preferable because it is excellent in workability. Of course, a thermoplastic resin having a softening temperature exceeding 200 ° C. may be used depending on the application.
In addition, when using the string-like carbon fiber bundle coated with resin as the core wire as described above, the resin used for coating the core wire and the resin used for the intermediate layer are the same from the viewpoint of improving the adhesion between the core wire and the intermediate layer. It is preferable that

The intermediate layer needs to have a thickness that gives sufficient bendability when softened and can cover the carbon fiber bundles constituting the core wire. Although it depends on the purpose of use and the thickness of the core wire, the thickness of the intermediate layer is preferably 0.05 mm or more, more preferably 0.1 mm or more, and further preferably 0.5 mm or more. The upper limit of the thickness of the intermediate layer is not particularly limited, but is usually about 30 mm or less, but may be more depending on the intended use.
The thickness of the intermediate layer can be measured by measuring the distance between the inner layer and the outer layer of the cross-section of the string-like carbon fiber bundle with a caliper or with a microscope (including an electron microscope).

The intermediate layer preferably includes a reinforcing yarn. By including the reinforcing yarn together with the resin in the intermediate layer, the carbon fiber yarn used for the core wire may break when a transverse force is applied to the carbon fiber during storage, transportation, handling or use. , Shearing can be suppressed.
The direction in which the reinforcing yarns are arranged in the intermediate layer is preferably arranged in the direction coaxial with the core wire to protect the string-like carbon fiber bundle from shearing and from the viewpoint of the production process.
Moreover, the string-like reinforcing fiber composite of the carbon fiber wire 2 having the string-like carbon fiber bundle as the inner layer (core wire) is particularly excellent in strength in the tensile direction, but from the viewpoint of increasing the other strength, It is good also as a structure containing the reinforcement thread | yarn arrange | positioned in the orthogonal direction with a core wire.
Further, the reinforcing yarn may be wound around the core wire in a spiral shape, or may include a reinforcing yarn arranged in an oblique direction with respect to the core wire.
Further, the reinforcing yarn is preferably arranged so as to cover the outer periphery of the core wire from the viewpoint of protection of the core wire. In particular, it is preferable that the core wire is disposed so as to cover the outer periphery without any gap.
Thus, by including the reinforcing yarn in the intermediate layer, the carbon fiber yarn used for the core wire is protected, the disconnection of the carbon fiber yarn is prevented, and the strength of the intermediate layer itself is also improved. The strength of the entire reinforcing fiber composite is improved.
In addition, a thick intermediate layer can be formed around the reinforcing yarn. Therefore, even when the diameter of the core wire is relatively large or relatively small compared to the diameter required for the finally obtained string-like carbon fiber composite, an intermediate layer having an arbitrary thickness is formed correspondingly. The string-like carbon fiber composite having the required thickness can be supplied. Therefore, a string-like reinforcing fiber composite having a necessary thickness can be obtained at an appropriate cost by using a necessary amount of carbon fiber corresponding to a necessary tensile strength.

As the reinforcing yarn, any of natural fiber, synthetic fiber, glass fiber, and basalt fiber can be used. Usually, synthetic fiber is preferably used. As synthetic fibers, fibers such as polyamide (nylon, aramid, etc.), vinylon, polyacryl, polypropylene, vinyl chloride, polyester, polyacetal, etc. can be used, and these may be used alone or in combination of two or more. Among these, polyamide and polyacetal are preferable from the viewpoint of toughness, and aramid which is an aromatic polyamide is particularly preferable. Polyester fibers are preferred from the viewpoint of cost and form stability.
Further, the yarn may be any of filament yarn, span yarn, and covering yarn.
In addition, since such a reinforcing yarn has a higher shear resistance than the carbon fiber constituting the core wire, the reinforcing yarn is disposed in the middle layer in the direction coaxial with the core wire, thereby forming the cord-like carbon fiber bundle of the core wire. Protects against shearing.

In addition, there is no restriction | limiting in particular as a method of forming an intermediate | middle layer around a core wire, For example, a core wire is used using spray, a brush, etc. similarly to the method of coating the said string-like carbon fiber bundle which comprises a core wire with resin. And a method of forming a resin layer around the core and a method of winding a resin film around a core wire.
In the case where this resin is a thermoplastic resin, from the viewpoint of improving productivity, the core wire is melted or dissolved in the same manner as the method of coating the thermoplastic resin on the cord-like carbon fiber bundle constituting the core wire described above. And a method of immersing and passing in a thermoplastic resin dissolved in or an emulsion containing a thermoplastic resin.
In particular, in order to form an intermediate layer containing reinforcing yarns with good productivity, a string-like carbon fiber bundle or a structure in which reinforcing yarns are arranged around a carbon fiber bundle is shown using a dip-nip method or a die. It is preferable to use an apparatus as shown in FIG. 18 and to apply a thermoplastic resin around the core wire to form an intermediate layer. In this method, a string-like carbon fiber bundle supplied from a creel or a reinforcing fiber arranged around the carbon fiber bundle is immersed in a thermoplastic resin melted or dissolved in a solvent or an emulsion containing a thermoplastic resin. The intermediate layer containing the reinforcing yarn can be obtained by passing through, then squeezing with a mangle if necessary, removing excess thermoplastic resin, adjusting the wire diameter with a die, and drying and curing as necessary.

[Outer layer]
The outer layer of the string-like reinforcing fiber composite of the carbon fiber wire 2 is formed of a knitted tubular string, and has a role of protecting the string-like carbon fiber bundle that is a core wire from the outside. The “knitted tubular string” is a tubular body having a knitted structure in which fibers are knitted or a braided structure in which fibers are assembled as shown in FIG.

As described above, carbon fiber has high tensile strength but not so high shear strength. Therefore, when sharp objects come into contact with the string-like carbon fiber bundle constituting the core wire from the outside, it breaks through the intermediate layer provided around the carbon fiber bundle. There is a possibility that the carbon fiber yarn is cut and the strength of the core wire is lowered.
Here, by providing an outer layer made of a knitted tubular string having high strength, the inner string-like carbon fiber bundle can be protected from sharp objects and stress.
As long as the role of the outer layer is not impaired, further coating or the like may be performed on the outer layer. For example, in order to improve the designability, the outside of the outer layer may be colored with a paint or the like, or coated with various inorganic or organic substances.
When the string-like reinforcing fiber composite of the carbon fiber wire 2 is used as a brace material, the outer layer of the knitted tubular string has a knitted structure or a braided structure corresponding to the space design used. Use a string.

One of the characteristics of the string-like reinforcing fiber composite of the carbon fiber wire 2 is that the outer layer is a knitted tubular string. Since the outer layer of the string-like reinforcing fiber composite of the carbon fiber wire 2 is a knitted tubular string, it has flexibility and can be deformed by some stress, so that the stress can be released. Thus, in the knitted tubular string, the string-like form can be maintained, and the flexibility can be maintained even when the thickness of the outer layer is sufficiently protected from sharps and stress from the outside. There are advantages.
On the other hand, when the outer layer is formed only by the resin coating, it is impossible to achieve both the role as the protective layer and the flexibility.
Note that the balance between flexibility and strength can be achieved by changing the density of the fibers used in the outer layer.
Further, the knitted tubular string includes a tubular knitted structure in which fibers are knitted as described above (hereinafter also referred to as “round knitting”), and a braided structure in which fibers are assembled in a cylindrical shape (hereinafter referred to as “round punching”). The braid structure is preferably used because it has moderate hardness and flexibility, and more excellent strength and shape stability.
Further, in the braid structure, since the diameter is reduced when the braided structure is stretched, it is more preferable that the adhesiveness between the outer layer and the intermediate layer and the inner layer included in the outer layer is increased when manufactured so as to apply tension.

As fibers constituting the outer layer of the knitted tubular string, resin fibers made of natural resin or synthetic resin, glass fibers, basalt fibers, and the like can be used, and these can be used in combination. Of these, synthetic resin fibers are preferably used.
Preferable specific examples of the fibers constituting the outer layer include fibers such as polyamide (nylon, etc.), vinylon, polyacryl, polypropylene, vinyl chloride, aramid, cellulose, polyamide, polyester, polyacetal and the like. Among these, vinylon, cellulose, polyamide, and polyacetal, which have a good balance of chemical resistance (particularly alkali resistance) and variability, are preferable, and vinylon is particularly preferable. These fibers not only have sufficient strength as the outer layer, but also have strong resistance to alkali.
In addition, when heat treatment is performed depending on the manufacturing process and usage of the string-like reinforcing fiber composite, if the outer knitted tubular string is made of polyester fiber, it is difficult to cause shrinkage or expansion due to heat or moisture, and dimensional stability From the viewpoint of

  The diameter, length, and thickness of the outer layer of the knitted tubular string can be appropriately determined according to the purpose of use, and can be set to an arbitrary thickness and length according to the inner core wire and the intermediate layer.

  Also, the fibers constituting the outer layer knitted tubular string can be colored in various colors to enhance the design. Further, by coloring the outer layer, the types of the outer layer, the intermediate layer, and the inner layer may be discriminated.

  The outer layer knitted tubular string manufacturing method is not particularly limited. For example, a conventionally known string knitting machine, circular knitting machine, or a known sock manufacturing apparatus is partially modified to form a knitted cylindrical string manufacturing apparatus. It can be made by diverting.

Hereinafter, a method of providing a knitted tubular string as an outer layer around the core wire and the intermediate layer will be described.
The method of providing the outer layer is not particularly limited. For example, first, an intermediate layer is formed around the inner layer (core wire), and then the outer layer is assembled or knitted around the outer layer to form the outer layer;
First, a method of forming an outer layer as a knitted tubular string, and inserting a core wire provided with an intermediate layer around the outer layer;
Etc.
In addition, when the adhesiveness between the knitted tubular string as the outer layer and the resin is poor, an adhesive layer having higher adhesiveness may be provided on the intermediate layer.
In addition, when the resin constituting the intermediate layer is a thermoplastic resin, the thermoplastic layer constituting the intermediate layer is heated by heating with the core wire provided around the intermediate layer inside the braided tubular cord. The resin may be softened and integrated with a knitted tubular string as an outer layer.
Further, the knitted tubular string that is the outer layer to be used may be coated by the same method as described above using the same resin as the resin constituting the above-described intermediate layer, and such a knitted tubular string is used. Thereby, adhesiveness with an intermediate | middle layer improves.

[Method for Producing String-like Reinforcing Fiber Composite of Preferred Embodiment]
Hereinafter, the manufacturing method of the string-like reinforced fiber composite of the preferable aspect of the carbon fiber wire 2 is demonstrated.
One of the preferable embodiments of the carbon fiber wire 2 is a cord-like reinforcing fiber composite having an intermediate layer made of a plurality of reinforcing yarns arranged in the same direction as the resin and the core wire, and an outer layer made of a knitted tubular cord. Hereinafter, an example of the manufacturing method will be described.
(1) The periphery of the core wire composed of one or a plurality of carbon fiber bundles is disposed so as to cover the entire outer periphery of the core wire without any gaps with the reinforcing yarn that is part of the intermediate layer, and is disposed on the outer periphery of the core wire A braiding machine is used to assemble appropriate fibers around the reinforcing yarn to form a knitted tubular cord as an outer layer, and then a resin is applied to the cord-like material composed of the core wire, the reinforcing yarn and the knitted tubular cord. Apply by dip-nip method, if necessary, pass through a die, and if necessary, perform drying, heat treatment, cooling, etc., resin is outer layer (knitted tube string), intermediate layer (reinforcing yarn), inner layer (string shape) To the carbon fiber bundle), and the inner layer, the intermediate layer, and the outer layer are bonded and integrated to produce a string-like reinforcing fiber composite. In addition, after dipping a string-like object into resin, you may pass through a die | dye, without niping, and you may remove excess resin.
(2) Cover the entire outer periphery of the core wire without a gap with a reinforcing thread so as to form a double circle around the core wire around the core wire having a circular cross section composed of one or a plurality of carbon fiber bundles, Next, a thermoplastic resin is applied by a dip-nip method, and if necessary, a die is passed through, followed by drying, heat treatment, cooling, etc., and the thermoplastic resin is coated on the inner layer and the intermediate layer, and the inner layer and the intermediate layer are bonded. And unite. Next, the outer layer fibers are assembled around the intermediate layer using a string making machine to manufacture a string-like reinforcing fiber composite. Moreover, by heat-treating this, the inner layer, the intermediate layer, and the outer layer can be bonded and integrated by softening and cooling the thermoplastic resin. In addition, after dipping the string-like thing which covered the outer periphery of the core wire with the reinforcing thread to the thermoplastic resin, the excess resin may be removed by passing through a die without nip.
Further, according to the methods (1) and (2), the core wire is coated with a resin, and the resin that coats the core wire and the resin that constitutes the intermediate layer are the same, and the inner layer, the intermediate layer, and the outer layer are Bonding and integrating with the same resin as the resin constituting the intermediate layer can be performed in a single resin application step.

In addition, a particularly preferable aspect of the carbon fiber wire 2 is a string-like reinforcing fiber composite in which the inner layer, the intermediate layer, and the outer layer are bonded and integrated with the same resin as that forming the intermediate layer. Hereinafter, an example of the manufacturing method will be described.
In particular, applying a resin to a string-like material in which an inner layer, a reinforcing thread, and an outer layer are arranged, forming an inner layer, an intermediate layer, and an outer layer, in particular, simultaneously bonding these layers with a resin and integrating them, It is preferable from the viewpoint of strength and productivity.
At this time, from the viewpoint of facilitating the penetration of the resin into the inner layer, the outer layer of the knitted tubular cord preferably has a gap between the yarns forming the outer layer. A struck braid is good.
In addition, the state of the resin at the time of applying the resin may be any of a molten state, a state dissolved in a solvent, and an emulsion state containing the resin, but the inside of each fiber constituting the outer layer, the intermediate layer, and the inner layer. The thing with the low viscosity which is easy to osmose | permeate is preferable.
The viscosity is preferably 50000 mPa · s or less, more preferably 10000 mPa · s or less, and particularly preferably 1000 mPa · s or less (measurement method: B-type viscometer, rotor No. 4 12 rpm). The lower limit is about 1 mPa · s, preferably 10 mPa · s or more.
When the viscosity exceeds 50000 mPa · s, the resin may not sufficiently penetrate into the outer layer, the intermediate layer, and the inner layer, and the strength may decrease. On the other hand, if it is less than 1 mPa · s, a resin sag occurs during processing, and a sufficient amount of resin cannot be applied to the string-like reinforcing fiber composite, which may reduce the strength.
In addition, from the viewpoint of allowing the resin to penetrate into the inside of the cord-like carbon fiber bundle that is the core wire, it is preferable to use a cord-like carbon fiber bundle that constitutes the inner layer and that is not previously coated with the resin. In addition, what is called a sizing agent or a converging agent that is slightly imparted to prevent the carbon fiber yarn from being broken during the production of the carbon fiber bundle often does not affect the effect of the carbon fiber wire 2. If it is a thing, it may be previously given to the string-like carbon fiber bundle also in the said manufacturing method. Preferably, a sizing agent or sizing agent having a high affinity with the resin to be coated is used.

[Use of multi-layered string-like reinforcing fiber composite]
The string-like reinforcing fiber composite of the carbon fiber wire 2 can be applied to all industrial fields such as civil engineering, construction, ships, mining and fishing, and its use is not limited.
Among the usages, the string-like reinforcing fiber composite of the carbon fiber wire 2 has strength derived from carbon fibers that is not covered by reinforcing bars, and therefore the string-like reinforcing fiber composite of the carbon fiber wire 2 is magnetic. It can be used particularly suitably for applications where the use of reinforcing bars is not desirable, such as buildings that use precision machinery with problems, environments that are prone to salt damage, and high-rise buildings that require maintenance costs.

In addition, the string-like reinforcing fiber composite of the carbon fiber wire 2 has excellent strength derived from carbon fiber, which is not overly reinforced, and is lightweight, so it can be used for buildings such as steel structures, reinforced concrete and wooden structures, bridges, etc. It can be preferably used as a brace material or a reinforcing material (including a substitute for a reinforcing metal fitting) used for a bridge or the like. Moreover, since it has sufficient intensity | strength even if it is a thin thing, it is also possible to manufacture the building excellent in design property.
In particular, in the string-like reinforcing fiber composite of the carbon fiber wire 2, when a thermoplastic resin is used for the intermediate layer, it can be stored and transported by being wound around a drum or the like by being variable by applying heat. Long brace material can be supplied.

  In addition, the carbon fiber wire used for the reinforcing material of the present invention is not limited to the carbon fiber wire 2 and may have another structure without departing from the gist of the present invention.

  Moreover, it can replace with the said carbon fiber wire 2, and it is also possible to use the high strength fiber wire demonstrated below.

(Embodiment 2-1)
A high-strength fiber wire 61a shown in FIG. 19 includes a high-strength fiber bundle 65 including a core wire 62 and a restraining material 63a.
The core wire 62 is a filament having a circular or flat cross section formed by bundling a plurality of high-strength fiber yarns 64 (usually several thousand to several tens of thousands).
As the high-strength fiber yarn 64, a fiber also called a super fiber can be used. Examples of the high-strength fiber yarn 64 include carbon fiber, basalt fiber, para-aramid fiber, meta-aramid fiber, ultrahigh molecular weight polyethylene fiber, polyarylate fiber, PBO (polyparaphenylene benzoxazole) fiber, polyphenylene sulfide (PPS). ) Fiber, polyimide fiber, fluorine fiber, polyvinyl alcohol (PVA fiber) and the like can be used.
The core wire 62 may be one in which the high-strength fiber yarn is used in one type, two or more types are mixed, or other yarns made of organic fibers are mixed within a range where the strength and bendability are not impaired.
The core wire 62 may be impregnated with a sizing agent or a sizing agent to such an extent that the peripheral surface of the core wire 62 does not hinder the functioning as an adhesive surface.

If the high-strength fiber yarn 64 that constitutes the core wire 62 is a carbon fiber yarn or a basalt fiber yarn, the tensile strength is reduced when twisted, so the high-strength fiber yarn (filament) is not twisted, Moreover, it is preferable that the entire high-strength fiber bundle is not twisted so that it is substantially equivalent to the untwisted yarn. The restraining material 63a for binding the core wire 62 may be twisted or not.
In order to obtain a bundle of high-strength fiber yarns that are not twisted and become the core wire 62, a high-strength fiber yarn that has been aligned so as not to be twisted from the spinning stage is used.

If the high-strength fiber yarn 64 constituting the core wire 62 is a carbon fiber yarn, any PAN-based or pitch-based carbon fiber yarn can be used. Among these, a PAN-based carbon fiber yarn is preferable from the viewpoint of a balance between strength and elastic modulus of the obtained molded product.
In addition, the carbon fiber bundle obtained by bundling the carbon fiber yarns is made up of 6000 (6K), 12000 (12K), 24000 (24K), etc. carbon fiber yarns supplied from a carbon fiber manufacturer to the required strength. Depending on the situation, one or a plurality of bundles can be used. When a plurality of carbon fiber bundles are bundled, a necessary number of high-strength fiber yarns 64 are drawn from the creel and bundled to form the core wire 62.

The restraining material 63a binds the core wire 62 from the peripheral surface so that the high strength fiber yarns 64 do not fall apart.
In the present embodiment, as shown in FIG. 19, a braided restraining material 63a is formed by winding a fiber that becomes the restraining material 63a and assembling a coarse braided string (round punching). However, the arrangement of the restraining material is not limited to this.
Since the binding material only needs to be bundled so that the high-strength fiber yarns 64 constituting the core wire 62 are not separated, for example, a single binding material is wound in a spiral shape to bind the core wire (not shown), As shown in FIG. 20, the core wire 62 is bound by a braided string-like restraining material 63b obtained by winding a fiber that serves as the restraining material 63b around the core wire 62 and knitting a coarse circular circular knitting. As shown in FIG. 21, as a restraining material for binding the core wire 62 of the high-strength fiber wire 61c, the core wire 62 is bound by a restraining material 63c in which the fibers mentioned in the restraining material 63a are arranged at a predetermined interval. There may be.

  In order to form the constraining material 63a shown in FIG. 19, the core wire 62 is passed through the center of the cord making machine, and a braid with a coarse mesh is formed on the peripheral surface of the core wire 62 by the cord making machine. By doing so, the braided restraining material 63a is formed on the peripheral surface of the core wire 62, and the core wire 62 is bound so as not to be separated into a long high-strength fiber wire 61a, which is wound around a drum or the like. Can do. The high-strength fiber wire 61a can be easily wound around a drum or the like because the flexible core wire 62 is simply bound by the restraining material 63a. Therefore, movement and storage are easy.

The binding material is preferably a flexible material, and synthetic fibers such as polyester, nylon, and vinylon, regenerated fibers such as rayon, semi-synthetic fibers such as acetate, and natural fibers such as silk, wool, hemp, and cotton can be used.
When the restraining material is the braided string (round punching) of FIG. 19, the restraining material 63a is preferably crossed at a pitch of 0.5 mm to 30 cm with respect to the length direction of the core wire 62, and particularly 0.1 cm. 10 cm is more preferable.

In addition to impregnating and tying the core wire 62 with a sizing agent or a sizing agent, in order to bind the high strength fiber yarn 64 more firmly, the plurality of high strength fiber yarns 64 constituting the core wire 62 At least a part may be bound by a solidifying agent.
In particular, it is preferable to impregnate the core wire bound by the restraining material with a solidifying agent and harden the core wire together with the restraining material. By doing so, the core wire and the restraining material can be firmly integrated to form a rod-shaped body.
In this case, the high-strength fiber wire can be moved and stored in a state of being cut to a length of about several centimeters to several meters.
A high-strength fiber wire material in which the core wire 62 is firmly integrated can be easily placed because it does not lose its shape when it is placed in a narrow groove or inserted into a deep hole.

As the solidifying agent that can be used, either a thermoplastic resin or a thermosetting resin may be used, but in order to provide variability, a thermoplastic resin is preferably used. Moreover, it is desirable to use a solidifying agent having a high affinity with the high strength fiber yarn.
Preferred examples include polyetheretherketone (PEEK), polypropylene, polyethylene, polystyrene, polyamide (nylon 6, nylon 66, nylon 12, nylon 42, etc.), ABS resin, acrylic resin, vinyl chloride resin, vinylidene chloride resin. , Polyphenylene oxide, polybutylene terephthalate, polyethylene terephthalate, polysulfone, polyethersulfone, polyetherimide, polyarylate, epoxy resin, urethane resin, polycarbonate resin, resorcinol resin, and the like, but are not limited thereto.

  Among these, polyether ether ketone (PEEK), acrylic resin, vinyl chloride resin, vinylidene chloride resin, polyethylene resin, epoxy resin, urethane resin, polycarbonate resin, and resorcinol resin are preferable from the viewpoint of durability against acids and alkalis.

The method of coating the core wire 62 with the above-described resin (solidifying agent) is not particularly limited, such as coating the high-strength fiber with a spray or a brush, but from the viewpoint of productivity, a dip-nip method or a further die is used. The used apparatus as shown in FIG. 22 can be used.
When a thermoplastic resin is coated as a resin, the high strength fiber yarn supplied from the creel 67a when the high strength fiber bundle 65 according to Embodiment 2-1 is manufactured using an apparatus as shown in FIG. The core wire 62 is passed through a string making machine (not shown) or passed through a circular knitting machine (not shown) to form a constraining material, and then melted or dissolved in a thermoplastic resin or thermoplastic. Immerse in an emulsion containing resin and let it pass, then squeeze with mangle if necessary, remove excess thermoplastic resin, adjust the wire diameter with die 67b, and then dry and harden with heating furnace 67c as necessary Coating. Then, if the dried and hardened material is cut into a predetermined length by the cutting machine 67d, it can be moved and stored in the cut state. Moreover, after winding up to a drum without cut | disconnecting and construction being decided, it can cut | disconnect and use for arbitrary lengths.
Or it is also possible to manufacture the high-strength fiber bundle 65 using an apparatus as shown in FIG. In FIG. 23, the same components as those in FIG. In the apparatus shown in FIG. 23, a high-strength fiber bundle in which a core wire 62 made of high-strength fiber yarn supplied from a drum 67e is constrained by a constraining material is formed, and a thermoplastic resin or a thermoplastic resin melted or dissolved in a solvent. When it is immersed and passed through the emulsion containing the resin, the resin is impregnated to the inside by squeezing with a die 67f. Further, bumping is prevented by passing the preheating furnace 67g before drying with the heating furnace 67c.

In the high-strength fiber wires 61a to 61c according to Embodiment 2-1, the surface of the core wire 62 is not completely covered with the restraining materials 63a to 93c, and is partially exposed without being covered. .
By exposing the surface of the core wire 62 in this way, when the above-described resin is coated on the core wire 62, the resin easily penetrates into the core wire 62. As a result, the high-strength fiber yarns 64 constituting the core wire 62 can be Bonding power can be improved.
Moreover, when joining the high strength fiber wire 61a-61c with another member, the exposed surface of the said core wire 62 functions also as an adhesive surface when making it adhere | attach with another member.

Here, the ratio that the constraining material covers the core wire 62 will be described.
The coverage of the core wire 62 is the ratio of the area occupied by the constraining material to the area of the entire peripheral surface of the high strength fiber wire. When the constraining material is uniformly arranged on the peripheral surface of the core wire 62, the coverage is obtained by imaging the high strength fiber wire from the side, the area of the entire high strength fiber wire from the captured image, It can be calculated by measuring the area occupied by the material and calculating according to the following equation.

Coverage rate (%) = (area occupied by restraint material) / (area of the entire high-strength fiber wire) × 100

It is desirable that the coverage ratio calculated in this way is small because an area where the adhesive functions as an adhesive surface by adhering to the peripheral surface of the core wire 62 when adhering to another member is widened.
In particular, it is 70% or less from the viewpoint of improving the adhesive strength with other members using the high strength fiber wire 61a. More preferably, it is 50% or less, More preferably, it is 30% or less. The lower limit of the covering ratio can be set to the lowest value at which the high-strength fiber yarns 64 constituting the core wire 62 are not separated and can maintain a string shape or a rod shape.

(Embodiment 2-2)
Embodiment 2-2 of the present invention will be described with reference to FIG. In FIG. 24, the same components as those in FIGS.

FIG. 24A shows a partially enlarged side view of the high-strength fiber wire 61d according to Embodiment 2-2, and FIG.
The high-strength fiber wire 61d includes 19 high-strength fiber bundles 65 each composed of a core wire 62 and a restraining material 63a. The 19 high-strength fiber bundles 65 are bundled together, and each high-strength fiber bundle 65 is bundled. The space between 65 is filled with a solidifying agent 65a and integrated by the solidifying agent 65a.
Here, the high strength fiber bundle 65 has the same configuration as the above-described high strength fiber wire 61a shown in FIG. In the present embodiment, the high-strength fiber bundle 65 has the same configuration as the high-strength fiber wire 61a, but is not limited to this, and the high-strength fiber having the same configuration as the high-strength fiber wires 61b and 61c. Other forms of high strength fiber bundles can be used, including bundles.

The number of high-strength fiber bundles 65 in this embodiment is 19, but this number is determined in consideration of the intended performance (particularly tensile strength) and application of the high-strength fiber wire 61d.
For example, when using 24,000 bundles of carbon fiber yarns (24k) as a core wire to obtain a high strength fiber wire for use as a brace, the number of high strength fiber bundles 65 is about 2 to 500. In the case of using a bundle of 12,000 carbon fiber yarns (12k) as a core wire and obtaining a high-strength fiber wire for use as a wire, the number is about 2 to 1000.

  As the solidifying agent 65a that can be used, either a thermoplastic resin or a thermosetting resin may be used as in the case of the embodiment 2-1, but a thermoplastic resin can be preferably used in order to provide variability. . The solidifying agent 65a preferably has high affinity with high-strength fiber yarns, and from the viewpoint of durability against acids and alkalis, polyether ether ketone (PEEK), acrylic resin, vinyl chloride resin, vinylidene chloride. Resins, polyethylene resins, epoxy resins, urethane resins, polycarbonate resins, and resorcinol resins are preferred.

A method for integrating the plurality of high-strength fiber bundles 65 with the solidifying agent 65a is not particularly limited. For example, when the solidifying agent 65a is a thermoplastic resin, a state where a plurality of high-strength fiber bundles 65 are arranged using an apparatus as shown in FIG. 22 or FIG. 23 as in the case of the embodiment 2-1. Then, the molten thermoplastic resin may be impregnated and cooled.
The solidifying agent 65a only needs to be integrated with the high-strength fiber bundles 65, and it is not necessary to impregnate the solidifying agent 65a until it reaches the center of the core wire 62, but the core wire 62 is impregnated to cure the entire core wire 62. You may let them.

(Embodiment 2-3)
Embodiment 2-3 of the present invention will be described with reference to FIG. In FIG. 25, the same components as those in FIGS. 19 to 24 are denoted by the same reference numerals and description thereof is omitted.

FIG. 25A is an external view of a high-strength fiber wire 61e according to Embodiment 2-3, and FIG. 25B is a cross-sectional view.
The high-strength fiber wire 61e arranges the cylindrical body 66 made of a fiber material so as to cover the outer periphery of the high-strength fiber wire 61d described in the embodiment 2-2 of the present invention. It is a high-strength fiber wire having a multilayer structure formed by integrating the body 66 with a solidifying agent 65a.
In Embodiment 2-3, the high-strength fiber wire 61d is used as the inner layer of the multi-layer structure high-strength fiber wire 61e. However, the present invention is not limited to this, and Embodiments 2-1 and 2-1 of the present invention are used. Other high-strength fiber wires according to 2-2 can be used.

The outer layer in the high-strength fiber wire 61e having a multi-layer structure is formed of a cylindrical body 66 and has a role of protecting the inner layer high-strength fiber wire 61d, which is a core wire, from the outside. As shown in FIG. 25, the cylindrical body 66 is a cylindrical body having a knitted structure in which a fiber material is knitted or a braided structure in which it is assembled.
Since the high-strength fiber wire 61e becomes a rod-like body by the solidifying agent 65a, it can be easily moved and stored in a state of being cut to a length of about several centimeters to several meters, and when placed in a narrow groove or depth When inserted into a deep hole or the like, it can be easily placed because it does not lose its shape.

If the high-strength fiber wire 61d is used as it is, the high-strength fiber yarn 64 may be cut when a sharp object comes into contact with the exposed surface of the high-strength fiber bundle 65 from the outside, and the strength of the core wire may be reduced. In particular, when a carbon fiber yarn is used as the high-strength fiber yarn 64, the carbon fiber yarn has a high tensile strength, but a shear strength is not so high, so this problem is likely to occur.
Here, the high-strength fiber wire 61e can protect the internal high-strength fiber wire 61d from sharp objects and stress by providing an outer layer made of the cylindrical body 66 having high strength.
In addition, as long as the role of such an outer layer is not impaired, further coating or the like may be performed on the cylindrical body 66. For example, in order to improve the designability, the outside of the outer layer may be colored with a paint or the like, or coated with various inorganic or organic substances.

Thus, the cylindrical body 66 can maintain a string-like form, and can maintain flexibility even if the thickness of the outer layer is sufficiently thick to protect from sharps and stress from the outside. There are advantages.
Note that the balance between flexibility and strength can be achieved by changing the density of the fibers used in the outer layer.
Further, the cylindrical body 66 has a cylindrical knitted structure in which fibers are knitted as described above (hereinafter also referred to as “round knitting”), and a braid structure in which fibers are assembled in a cylindrical shape (hereinafter referred to as “round punching”). The braid structure is preferably used because it has an appropriate hardness and superior strength and form stability.
Also, in the braid structure, the diameter is reduced before the solidifying agent is solidified, particularly when stretched, so that when manufactured so as to apply tension, the cylindrical body 66 which is the outer layer and the high strength contained therein It is more preferable also from the point that adhesiveness with 61 d of fiber wires improves.

As the fibers constituting the cylindrical body 66 of the outer layer, resin fibers made of natural resin or synthetic resin, glass fibers, basalt fibers, and the like can be used, and these can be used in combination. Of these, synthetic resin fibers are preferably used.
Preferable specific examples of the fibers constituting the outer layer include fibers such as polyamide (nylon, etc.), vinylon, polyacryl, polypropylene, vinyl chloride, aramid, cellulose, polyamide, polyester, polyacetal and the like. Among these, vinylon, cellulose, polyamide, and polyacetal, which have a good balance of chemical resistance (particularly alkali resistance) and variability, are preferable, and vinylon is particularly preferable. These fibers not only have sufficient strength as the outer layer, but also have high chemical resistance against alkalis and the like.
In addition, when heat treatment is performed depending on the manufacturing process or use application of the high strength fiber wire 61e, if the outer layer cylindrical body 66 is made of polyester fiber, shrinkage and expansion due to heat and moisture hardly occur, and dimensional stability is improved. More preferable from the viewpoint.

  The diameter, length and thickness of the cylindrical body 66 of the outer layer can be appropriately determined according to the purpose of use, and can be set to any thickness and length according to the inner core wire and the restraining material.

  Also, the fibers constituting the outer layer knitted tubular string can be colored in various colors to enhance the design. Further, by coloring the outer layer, the types of the outer layer, the intermediate layer, and the inner layer may be discriminated.

  The manufacturing method of the outer-layer tubular body 66 is not particularly limited. For example, a part of a conventionally known string maker, circular knitting machine, or a known sock manufacturing apparatus is partially modified to form a knitted cylindrical string manufacturing apparatus. It can be made by diverting.

Hereinafter, although an example of the manufacturing method of the high strength fiber wire 61e of a multilayer structure is demonstrated, it is not limited to the method illustrated here.
The method of providing the cylindrical body 66 as the outer layer around the high-strength fiber wire 61d is not particularly limited. For example, the high-strength fiber wire 61d is first disposed, and then the outer layer is assembled or knitted around the high-strength fiber wire 61d. A method of forming the outer layer;
First, a method of forming an outer layer as the cylindrical body 66 and inserting a high strength fiber wire 61d into the outer layer;
Etc.

After the outer layer cylindrical body 66 is temporarily fixed around the high-strength fiber wire 61d as the inner layer, both are integrated by the solidifying agent 65a. In addition, as the solidifying agent 65a, the thing similar to what was demonstrated by the said Embodiment 2-1, 2-2 can be used. In addition, as a method of temporary fixing, the method of fixing with an adhesive tape is mentioned, for example. Temporary fixing is performed for the convenience of manufacturing and is not necessarily performed.
The method of integration is appropriately selected depending on the type of the solidifying agent 65a. For example, when the solidifying agent 65a is a thermoplastic resin, the thermoplastic resin obtained by melting the high-strength fiber wire 61d temporarily fixed with the cylindrical body 66 of the outer layer. It suffices to cool the substrate after being immersed in it.
Further, after the thermoplastic resin layer is provided on the high strength fiber wire 61d, the outer layer cylindrical body 66 is formed around and heated in this state to soften the thermoplastic resin layer to become the outer layer. It may be integrated with the cylindrical body 66.
Alternatively, the cylindrical body 66 that is the outer layer to be used may be coated with a thermoplastic resin that becomes the solidifying agent 65a in advance, and then the high-strength fiber wire 61d may be inserted and heated.

In Embodiment 2-3, as the inner layer of the high-strength fiber wire 61e having a multilayer structure, a high-strength fiber wire 61d in which the high-strength fiber bundle 65 is integrated with a solidifying agent 65a is used, and an outer layer is formed around the high-strength fiber wire 61d. Although the certain cylindrical body 66 is arrange | positioned and the high strength fiber wire 61d and the cylindrical body 66 are further integrated with the solidifying agent 65a, the high strength fiber wire of a multilayer structure is not limited to this.
For example, as another embodiment, a high-strength fiber wire having a multi-layer structure is a state in which a plurality of high-strength fiber bundles 65 are aligned, and is not integrated with a solidifying agent 65a, but an outer layer around it. A string-like object in which a certain tubular body 66 is arranged may be formed, and then the string-like object may be integrated with a solidifying agent 65a. When the solidifying agent 65a is a thermoplastic resin, the string-like material is impregnated with a solution containing a thermoplastic resin melted or dissolved in an appropriate solvent, and then subjected to an appropriate heat treatment after adjusting the shape. It can also be made. In the obtained high strength fiber wire having a multi-layer structure, a plurality of high strength fiber bundles 65 as inner layers and a cylindrical body 66 as an outer layer are simultaneously solidified with the same solidifying agent 65a. Therefore, there is an advantage that the inner layer and the outer layer are less likely to be displaced (slip) even if they are integrated with the inner layer and the outer layer having a higher adhesive force and are used in applications where a strong tensile force such as a tensile material is applied.

  In FIG. 18, the carbon fiber bundle is described, and in FIGS. 22 and 23, the high strength fiber bundle 65 including the core wire 62 and the restraining material 63 a as the high strength fiber bundle is described, but an outer layer is formed on these. It is also possible to produce a high-strength fiber wire by using a device such as that shown in FIGS. 18, 22 and 23 after winding the cord-like material around a drum or the like after applying the cord-like material. It is.

[Use of high-strength fiber wire]
The high-strength fiber wire can be applied to all industrial fields such as civil engineering, construction, ships, mining and fishing, and its use is not limited.
Among high-strength fiber wires, this high-strength fiber wire has strength derived from high-strength fibers that cannot be reinforced by reinforcing bars, so this high-strength fiber wire can be used in buildings that use precision machines that have problems with magnetism, It can be particularly suitably used for applications where the use of reinforcing bars is not desirable, such as when salt damage is likely to occur or when maintenance costs are high, such as in high-rise buildings.

This high-strength fiber wire has excellent strength derived from high-strength fiber and is lightweight, so braces and reinforcing materials used for steel structures, reinforced concrete and wooden buildings, bridges, etc. It can be preferably used as (including replacement of reinforcing metal fittings). Moreover, since it has sufficient intensity | strength even if it is a thin thing, it is also possible to manufacture the building excellent in design property.
In particular, in this high-strength fiber wire, when a thermoplastic resin is used as a solidifying agent, it is variable by applying heat, so that it can be stored and transported on a drum or the like, and is a long brace material Can be supplied.
Moreover, this high strength fiber wire can be firmly fixed to a tensile material part. This high-strength fiber wire can be used by separating it into high-strength fiber bundle units when fixing the ends with tensile material parts, so that the bonding area is widened without damaging the high-strength fiber yarn. be able to. Therefore, the adhesive force between the high-strength fiber wire and the tensile material component can be increased, and the high-strength fiber wire and the tensile material component can be firmly bonded. In the case of the high-strength fiber wire having the multi-layer structure, at least a part of the cylindrical body that is the outer layer of the portion inserted into the tensile material part is removed from the high-strength fiber wire, You may use it, exposing the inner layer which consists of a high-strength fiber bundle. In this case, the exposed portion may be used separately from the high-strength fiber bundle unit or may be used without being distributed to the high-strength fiber bundle unit.
In particular, when the exposed portion of the inner layer is integrally used without being divided into high-strength fiber bundle units, it is not necessary to remove the solidifying agent of the exposed portion of the inner layer, and insertion into a tensile material part is easier. Is preferable because of its excellent adhesiveness to tensile material parts. Therefore, compared with the conventional high-strength fiber wire, it can be easily connected to a tensile material part, and can be suitably used as a reinforcing bar material, brace material or the like having excellent strength.

  Hereinafter, although carbon fiber wire 2 is explained still in detail by an example, carbon fiber wire 2 is not limited to the following examples, unless the gist is changed.

The diameter (outer diameter) of the string-like reinforcing fiber composite and the thickness of each layer in this example were measured with calipers.
In addition, the tensile strength of the string-like reinforcing fiber composite is measured using AUTO GRAPH Type AG-1 (250 kN) manufactured by Shimadzu Corporation under the conditions of 1 mm / min up to 10 kN and 5 mm / min up to 10 kN. did.

(Example 1-1)
As a whole, 20 pieces of 12K carbon fiber bundles (string-like carbon fiber bundles) were arranged to form one string-like carbon fiber bundle, which was used as a core wire (inner layer). Then, 20 polyester filaments (1100 dtex) combined with 5 polyester filaments around the core wire as reinforcing yarns were arranged in the direction coaxial with the core wire, and the core wire was covered without a gap.
Next, use 12 pieces of vinylon spun (10th yarn) combined on the outer periphery of the reinforcing yarn, assemble with 12 stitches using a string making machine (24 punching machine), and knit around the reinforcing yarn An outer layer made of a tubular string was formed to obtain a string-like object (50 m).
Next, a solution made of a thermoplastic epoxy resin (XNR6850A, manufactured by Nagase ChemteX Corporation), a curing agent (XNH6850AY, manufactured by Nagase ChemteX Corporation), and an organic solvent (methyl ethyl ketone) (viscosity 66 mPa · s, B-type viscometer, rotor No. 4, 12 rpm) was applied by a dip-nip method at room temperature (20 ° C.), passed through a die, the cross section was made circular, and heat treatment was performed at 150 ° C. for 10 minutes. After cooling. In this way, the cord-like carbon fiber bundle is coated with the thermoplastic resin, and an intermediate layer made of the thermoplastic resin including the reinforcing yarn is formed, and the inner layer, the intermediate layer, and the outer layer are bonded and integrated with the thermoplastic resin. The string-like reinforcing fiber composite of Example 1-1 was obtained. The string-like reinforcing fiber composite had an outer diameter of 6.6 mm, an outer layer thickness of 0.4 mm, an intermediate layer thickness of 0.9 mm, and an inner layer diameter of 4 mm. Moreover, it was confirmed that the carbon fiber yarn at the center of the string-like carbon fiber bundle was also bonded. The tensile strength of the string-like reinforcing fiber composite of Example 1-1 was 27 kN, which was equivalent to the theoretical value of the tensile strength of 20 12K carbon fiber bundles (string-like carbon fiber bundles).
Further, the obtained string-like reinforcing fiber composite could be wound around a drum while still softening at 100 ° C.
Furthermore, the string-like reinforcing fiber composite wound around the drum was pulled out while being heated to about 100 ° C. using a hot air fan, and cut into a length of 150 cm.

(Example 1-2)
As a whole, 20 pieces of 12K carbon fiber bundles (string-like carbon fiber bundles) were arranged to form one string-like carbon fiber bundle, which was used as a core wire (inner layer). Then, 20 polyester filaments (1100 dtex) combined with 5 polyester filaments around the core wire as reinforcing yarns were arranged in the direction coaxial with the core wire, and the core wire was covered without a gap.
Next, the outer periphery of the reinforcing yarn is assembled using 12 polyester yarns (10th yarn) combined with 12 yarns, using a string making machine (24 punching machine) with 12 stones, and knitted around the reinforcing yarn. An outer layer made of a tubular string was formed to obtain a string-like object (50 m).
Next, a solution made of a thermoplastic epoxy resin (XNR6850A, manufactured by Nagase ChemteX Corporation), a curing agent (XNH6850AY, manufactured by Nagase ChemteX Corporation), and an organic solvent (methyl ethyl ketone) (viscosity 66 mPa · s, B-type viscometer, rotor No. 4, 12 rpm) was applied by a dipping method at room temperature (20 ° C.), and excess thermoplastic resin was removed while a cross section was made circular by passing through a die. Next, heat treatment was performed at 150 ° C. for 10 minutes, followed by cooling. In this way, the cord-like carbon fiber bundle is coated with the thermoplastic resin, and an intermediate layer made of the thermoplastic resin including the reinforcing yarn is formed, and the inner layer, the intermediate layer, and the outer layer are bonded and integrated with the thermoplastic resin. The string-like reinforcing fiber composite of Example 1-2 was obtained. The string-like reinforcing fiber composite had an outer diameter of 6.6 mm, an outer layer thickness of 0.4 mm, an intermediate layer thickness of 0.9 mm, and an inner layer diameter of 4 mm. Moreover, it was confirmed that the carbon fiber yarn at the center of the string-like carbon fiber bundle was also bonded. The tensile strength of the string-like reinforcing fiber composite of Example 1-2 was 27 kN, which was equivalent to the theoretical value of the tensile strength of 20 12K carbon fiber bundles (string-like carbon fiber bundles).
Further, the obtained string-like reinforcing fiber composite could be wound around a drum while still softening at 100 ° C.
Furthermore, the string-like reinforcing fiber composite wound around the drum was pulled out while being heated to about 100 ° C. using a hot air fan, cut to a length of 200 cm, and used as a brace material. The brace material had sufficient strength, was thinner than the reinforcing bar, had a well-designed design, and was excellent in design.

(Example 1-3)
As a whole, 20 pieces of 12K carbon fiber bundles (string-like carbon fiber bundles) were arranged to form one string-like carbon fiber bundle, which was used as a core wire (inner layer). Then, 20 polyester filaments (1100 dtex) combined with 5 polyester filaments around the core wire as reinforcing yarns were arranged in the direction coaxial with the core wire, and the core wire was covered without a gap.
In contrast, a solution (viscosity 66 mPa · s, B-type viscometer) composed of a thermoplastic epoxy resin (XNR6850A, manufactured by Nagase ChemteX Corporation), a curing agent (XNH6850AY, manufactured by Nagase ChemteX Corporation), and an organic solvent (methyl ethyl ketone). , Rotor No. 4, 12 rpm) was applied with a brush at room temperature (20 ° C), the excess solution was removed while squeezing with a gloved hand, heat treatment was performed at 150 ° C for 10 minutes, and the cross section was cooled. Was arranged in a circle. In this way, an intermediate layer including a thermoplastic resin containing an inner layer composed of a string-like carbon fiber bundle coated with a thermoplastic resin and a reinforcing yarn was produced (1.5 m).
Next, 12 reinforcing yarns made of 5 vinylon filaments (1100 dtex) were combined around the outer periphery of the reinforcing yarn, and then knitted around the reinforcing yarn using a string making machine (24 punching machine). An outer layer made of a tubular cord was formed, heat treatment (150 ° C.) was performed, and the inner layer, the intermediate layer, and the outer layer were bonded and integrated.
The obtained string-like reinforcing fiber composite of Example 1-3 had an outer diameter of 6.6 mm, an outer layer thickness of 0.4 mm, an intermediate layer thickness of 0.9 mm, and an inner layer diameter of 4 mm. Moreover, it was confirmed that the carbon fiber yarn at the center of the string-like carbon fiber bundle was also bonded.
Moreover, the obtained string-like reinforcing fiber composite was softened at 100 ° C. and could be wound around a drum.
Further, the string-like reinforcing fiber composite wound around the drum was drawn out while being heated to about 100 ° C. (100 ° C.) using a hot air fan, and cut into a length of 150 cm.

(Example 1-4)
As a whole, 20 pieces of 12K carbon fiber bundles (string-like carbon fiber bundles) were arranged to form one string-like carbon fiber bundle, which was used as a core wire (inner layer). Then, 20 polyester filaments (1100 dtex) combined with 5 polyester filaments around the core wire as reinforcing yarns were arranged in the direction coaxial with the core wire, and the core wire was covered without a gap.
Next, use 12 pieces of vinylon spun (10th yarn) combined on the outer periphery of the reinforcing yarn, assemble with 12 stitches using a string making machine (24 punching machine), and knit around the reinforcing yarn An outer layer made of a tubular string was formed to obtain a string-like object (50 m).
Next, a rod-shaped body obtained by cutting this string-like material by 1.5 m was used as a thermosetting epoxy resin (XNR3324, manufactured by Nagase ChemteX Corporation), a curing agent (XNH3324, manufactured by Nagase ChemteX Corporation), an organic solvent ( A solution composed of methyl ethyl ketone (viscosity 850 mPa · s, B-type viscometer, rotor No. 4, 12 rpm) was applied by a dip-nip method at room temperature (20 ° C.), and the cross-section was adjusted to a circular shape through a die. The resin was cured by standing at 20 ° C. for 7 days to obtain a string-like reinforcing fiber composite of Example 1-4. In the string-like reinforcing fiber composite of Example 1-4, a string-like carbon fiber bundle is coated with a resin, and an intermediate layer made of a resin including a reinforcing yarn is formed, and the inner layer, the intermediate layer, and the outer layer are bonded with the resin. The outer layer was 6.6 mm, the outer layer thickness was 0.4 mm, the intermediate layer thickness was 0.9 mm, and the inner layer diameter was 4 mm. Moreover, it was confirmed that the carbon fiber yarn at the center of the string-like carbon fiber bundle was also bonded. The tensile strength of the string-like reinforcing fiber composite of Example 1-4 was 24 kN.

(Example 1-5)
As a whole, 20 pieces of 12K carbon fiber bundles (string-like carbon fiber bundles) were arranged to form one string-like carbon fiber bundle, which was used as a core wire (inner layer). Then, 20 polyester filaments (1100 dtex) combined with 5 polyester filaments around the core wire as reinforcing yarns were arranged in the direction coaxial with the core wire, and the core wire was covered without a gap.
Next, the outer periphery of the reinforcing yarn is assembled using 12 polyester yarns (10th yarn) combined with 12 yarns, using a string making machine (24 punching machine) with 12 stones, and knitted around the reinforcing yarn. An outer layer made of a tubular string was formed to obtain a string-like object (50 m).
Next, the rod-shaped body obtained by cutting this string-like material 2 m is a thermosetting epoxy resin (XNR3311, manufactured by Nagase ChemteX Corporation), a curing agent (XNH3311, manufactured by Nagase ChemteX Corporation), an organic solvent (methyl ethyl ketone). A solution (viscosity 850 mPa · s, B-type viscometer, rotor No. 4, 12 rpm) is applied by a dipping method at room temperature (20 ° C.), and excess resin is removed while the cross section is made circular through a die. The resin was cured by standing at room temperature (20 ° C.) for 7 days to obtain a string-like reinforcing fiber composite of Example 1-5. In the cord-like reinforcing fiber composite of Example 1-5, a cord-like carbon fiber bundle is coated with a resin, and an intermediate layer made of a resin including a reinforcing yarn is formed, and the inner layer, the intermediate layer, and the outer layer are bonded with the resin. The outer layer was 6.6 mm, the outer layer thickness was 0.4 mm, the intermediate layer thickness was 0.9 mm, and the inner layer diameter was 4 mm. Moreover, it was confirmed that the carbon fiber yarn at the center of the string-like carbon fiber bundle was also bonded. The tensile strength of the string-like reinforcing fiber composite of Example 1-5 was 21 kN.

  Next, although the high strength fiber wire in the said Embodiment 2 is demonstrated in detail by an Example, a high strength fiber wire is not limited to a following example, unless the summary is changed.

(Example 2-1)
Polyester fibers (one bundle of 500 decitex polyester fibers and one 50 decitex polyester fiber bundle) are used as a thread-like restraint material, and spirally wound around a core consisting of a 24K carbon fiber bundle The core wire which consists of this carbon fiber bundle was restrained, and one high strength fiber bundle was obtained. An appearance photograph is shown in FIG. In the obtained high-strength fiber bundle, the surface of the carbon fiber bundle restrained by the restraining material had few portions covered with the polyester fiber, and many portions of the carbon fiber bundle (core wire) were exposed.
Next, 40 high-strength fiber bundles obtained in the same manner were arranged to form one bundle. Next, the outer periphery of the bundle consisting of the obtained high-strength fiber bundle, using fibers obtained by gathering two twisted polyester fibers (1100 dtex), using a stringing machine (24 punching machine), The outer layer which consists of a cylindrical body was formed by using 12x2 stone patterning, and a string-like object was obtained (50 m). The external appearance photograph of the string-like thing obtained in FIG.26 (b) is shown.
The mass per unit length of the string-like material was 94 g / m, the mass of the bundle (inner layer) made of high-strength fiber bundles was 74 g / m, and the mass of the cylindrical body (outer layer) was 20 g / m.
Next, a solution comprising a thermoplastic epoxy resin (XNR6850A, manufactured by Nagase Chemtech Co., Ltd.), a curing agent (XNR6850AY, manufactured by Nagase Chemtech Co., Ltd.), and an organic solvent (methyl ethyl ketone) as a solidifying agent for the string. (Viscosity 66 mPa · S, B-type viscometer, rotor No. 4, 12 rpm) was applied by a dip-nip method at room temperature (20 ° C.), passed through a die, and the cross-section was rounded, and at 150 ° C. for 120 minutes. After the heat treatment, it was cooled. Thus, the high strength fiber wire of Example 2-1 having a multilayer structure in which the inner layer composed of the high strength fiber bundle and the outer layer composed of the cylindrical body were integrated was obtained.
The obtained high strength fiber wire was not twisted in the high strength fiber yarn (carbon fiber yarn), the high strength fiber bundle and the high strength wire. It was also confirmed that the carbon fiber yarn at the center was also adhered.
Cut the high-strength fiber wire into a length of 30 cm, further cut the cylindrical body at both ends 10 cm, and use a solvent to separate 40 carbon fiber bundles constrained by the restraint material one by one. It was shaped like a tea bowl. Next, steel pipes (length: 120 mm, inner diameter: 23 mm, outer diameter: 31 mm) cut as tensile material parts are inserted into both ends of the high-strength fiber wire material, and an adhesive (trade name: Wirelock resin (GB), LOGICHEM). The tensile strength was measured. The tensile strength of the high strength fiber wire of Example 2-1 was 111 kN, which was equivalent to the estimated strength 113 kN of 40 carbon fiber bundles of 24K.

(Example 2-2)
Using two polyester fibers (50 decitex polyester fiber bundles) as a restraining material, one is spirally wound in the S direction, and the other is spirally wound in the Z direction. The high core fiber bundle was obtained by restraining the core wire. FIG. 27A shows an appearance photograph. In the obtained high-strength fiber bundle, the surface of the carbon fiber bundle restrained by the restraining material had few portions covered with the polyester fiber, and many portions of the carbon fiber bundle (core wire) were exposed.
Next, 40 high-strength fiber bundles obtained in the same manner were arranged to form one bundle. Next, the outer periphery of the bundle consisting of the obtained high-strength fiber bundle, using fibers obtained by gathering two twisted polyester fibers (1100 dtex), using a stringing machine (24 punching machine), The outer layer which consists of a cylindrical body was formed by using 12x2 stone patterning, and a string-like object was obtained (50 m). The external appearance photograph of the string-like thing obtained in FIG.27 (b) is shown.
The mass per unit length of this string-like material was 89 g / m, the mass of the bundle (inner layer) consisting of high-strength fiber bundles was 70 g / m, and the mass of the cylindrical body 66 (outer layer) was 19 g / m. .
Next, a solution comprising a thermoplastic epoxy resin (XNR6850A, manufactured by Nagase Chemtech Co., Ltd.), a curing agent (XNR6850AY, manufactured by Nagase Chemtech Co., Ltd.), and an organic solvent (methyl ethyl ketone) as a solidifying agent for the string. (Viscosity 66 mPa · S, B-type viscometer, rotor No. 4, 12 rpm) was applied by a dip-nip method at room temperature (20 ° C.), passed through a die, and the cross-section was rounded, and at 150 ° C. for 120 minutes. After the heat treatment, it was cooled. Thus, the high strength fiber wire of Example 2-2 having a multilayer structure in which the inner layer composed of the high strength fiber bundle and the outer layer composed of the cylindrical body were integrated was obtained.
The obtained high strength fiber wire was not twisted in the high strength fiber yarn (carbon fiber yarn), the high strength fiber bundle and the high strength wire. It was also confirmed that the carbon fiber yarn at the center was also adhered.
Cut the high-strength fiber wire into a length of 30 cm, further cut the cylindrical body at both ends 10 cm, and use a solvent to separate 40 carbon fiber bundles constrained by the restraint material one by one. It was shaped like a tea bowl. FIG. 28A shows an appearance photograph. Insert steel pipes (length: 120 mm, inner diameter: 23 mm, outer diameter: 31 mm) at both ends of the high-strength fiber wire, and fix them using an adhesive (trade name: Wirelock resin (GB), manufactured by LOGICHEM). The tensile strength was measured. An appearance photograph after fixing is shown in FIG. The tensile strength of the high strength fiber wire of Example 2-2 was 109 kN, which was equivalent to the estimated strength 113 kN of 40 carbon fiber bundles of 24K.

(Example 2-3)
Twenty high-strength fiber bundles obtained in the same manner as the high-strength fiber bundle in Example 2-2 were arranged to form one bundle. Next, the outer periphery of the bundle consisting of the obtained high-strength fiber bundle, using fibers obtained by gathering two twisted polyester fibers (1100 dtex), using a stringing machine (24 punching machine), The outer layer which consists of a cylindrical body was formed by combining with twelve stones, and a string-like object was obtained (50 m).
The mass per unit length of the string-like material was 44 g / m, the mass of the bundle (inner layer) made of high-strength fiber bundles was 35 g / m, and the mass of the cylindrical body 66 (outer layer) was 9 g / m. .
Next, for this string-like material, from a thermoplastic epoxy resin (XNR6850A, manufactured by Nagase Chemtech Co., Ltd.), a curing agent (XNR6850RIN-K, manufactured by Nagase Chemtech Co., Ltd.), an organic solvent (methyl ethyl ketone) as a solidifying agent. A solution (viscosity 66 mPa · S, B-type viscometer, rotor No. 4, 12 rpm) is applied by a dip-nip method at room temperature (20 ° C.), passed through a die, and the cross-section is rounded, and at 150 ° C. After heat treatment for 20 minutes, it was cooled. Thus, the high strength fiber wire of Example 2-3 having a multilayer structure in which the inner layer composed of the high strength fiber bundle and the outer layer composed of the cylindrical body were integrated was obtained.
The obtained high strength fiber wire was not twisted in the high strength fiber yarn (carbon fiber yarn), the high strength fiber bundle and the high strength wire. It was also confirmed that the carbon fiber yarn at the center was also adhered.
The high-strength fiber wire was cut to a length of 30 cm, and the cylindrical body portions at both ends were further cut by 12 cm. FIG. 29 shows an appearance photograph. Unlike Example 2-2, 20 carbon fiber bundles constrained by the constraining material exposed at both ends of the high-strength fiber wire are used as one piece without breaking into a bowl shape. It was. Insert steel pipes (length: 120 mm, inner diameter: 14 mm, outer diameter: 20 mm) at both ends of the high-strength fiber wire, and fix them using an adhesive (trade name: Wirelock resin (GB), manufactured by LOGICHEM). The tensile strength was measured. The tensile strength of the high-strength fiber wire of Example 2-3 was 72.9 kN, which exceeded the estimated strength of 56.6 kN of 20 24K carbon fiber bundles by nearly 30%.

  The tensile material of the present invention is useful as a tensile material such as a shaft brace, a roof brace or a lower chord material of a stringed beam which is a structural member of a building. In particular, the tensile material of the present invention imparts initial tension when a high-strength fiber wire such as a carbon fiber wire is used as a tensile material such as a shaft brace, roof brace, or a lower chord of a string string, which is a structural member of a building. It is suitable as a tensile material capable of ensuring a stable tensile force and deformation properties.

DESCRIPTION OF SYMBOLS 1,10 Tensile material 2 Carbon fiber wire material 3 Tensile material part 3a, 12 Steel pipe 3b Insertion port 4 Fixing material 5 Screw 6 Turnbuckle 6b Screw 7, 11, 15 Fixing jig 8 Damping member 8a Screw 9, 13 Plate 9a, 13a Hole 14 Damping part 16a Steel pipe 16b Insertion port 16c Steel rod 16d Screw 20, 21, 22, 30, 31, 32, 33, 40-56 Body part 20a, 21a, 22a Slit 20b, 21b, 22b Screw formation part 22c , 30a, 32a, 33a Insertion port 22b Screw 30b Curved surface 31a Concavity and convexity 34 Plate 34a Convex part 61a to 61e High strength fiber wire 62 Core wire 63a, 63b, 63c Restraint material 64 High strength fiber yarn 65 High strength fiber bundle 65a Solidifying agent 66 Tube (Outer layer)
67a Creel 67b Die 67c Heating furnace 67d Cutting machine 67e Drum 67f Die 67g Preheating furnace

Claims (8)

The end of the high strength fiber wire is inserted from the insertion port side of one end, and is a body unit integrated with the high strength fiber wire, and a screw is formed at least on the other end opposite to the insertion port side A tensile material part having a body part;
A core wire including high-strength fiber yarns and a tubular body made of a knitted tube string including fibers covering the outer periphery of the core wire are high-strength fiber wires integrated by a resin, and the inside of the trunk portion of the tensile member A high-strength fiber wire, the end of which is inserted into and integrated with the tensile material component;
It is a fixing jig that is fastened to a screw formed on the other end of the body portion on the side opposite to the insertion port side and is fixed to a material to be pulled, and a fixing portion in which a midway portion is formed of extremely low yield point steel A tensile material having a jig. The end of the high strength fiber wire is inserted from the insertion port side of one end, and is a body unit integrated with the high strength fiber wire, and a screw is formed at least on the other end opposite to the insertion port side A tensile material part having a body part;
A core wire including high-strength fiber yarns and a tubular body made of a knitted tube string including fibers covering the outer periphery of the core wire are high-strength fiber wires integrated by a resin, and the inside of the trunk portion of the tensile member A high-strength fiber wire, the end of which is inserted into and integrated with the tensile material component;
A turnbuckle in which a screw at one end is fastened to a screw formed at the other end on the opposite side to the insertion port side of the trunk portion;
A tension member, which is a fixing jig that is fastened to a screw at the other end of the turnbuckle and is fixed to a material to be pulled, and a fixing jig whose middle part is formed of extremely low yield point steel. The tensile material according to claim 1 or 2, wherein the resin is a thermoplastic resin. The tensile material according to claim 3, wherein the thermoplastic resin is an epoxy resin. The tensile material according to any one of claims 1 to 4, wherein the tubular body made of the knitted tubular string has a braided structure. The tensile material according to any one of claims 1 to 5, wherein the inner surface of the body portion has irregularities. The tension member according to any one of claims 1 to 6 , wherein the body portion has a slit on a side, and an inner diameter on the insertion port side is reduced by tightening. The tension member according to claim 7 , wherein the trunk portion is formed with a screw on an outer peripheral portion on the insertion port side, and an inner diameter on the insertion port side of the trunk portion is reduced by tightening a nut on the screw.