JP6199440B2 - High strength fiber wire and composite material having the high strength fiber wire - Google Patents

Description

  The present invention relates to a high-strength fiber wire having a core wire bundled with high-strength fiber yarns and a composite material having the high-strength fiber wire.

Carbon fiber has excellent mechanical properties such as tensile strength and elastic modulus, corrosion resistance to acids and alkalis, and is lightweight, so it can be used in various industrial fields such as automobiles, aircraft, electrical / electronic equipment, toys, and home appliances. It is also being used for structural applications.
For example, Patent Document 1 discloses an example in which a carbon fiber wire is used as a tensile material such as braces (struts) in a frame in order to improve the earthquake resistance of a building.

  Carbon fiber wire is effective in improving tensile strength and bending strength, but has a property of being weak against shearing force. Such problems are not limited to carbon fiber yarns, but fibers called high strength fibers such as basalt fiber yarns are bundled by aligning the fiber directions to form a high strength fiber bundle, and the peripheral surface of this high strength fiber bundle The same applies to a high-strength fiber wire that is entirely covered with other fibers.

In addition, in the Patent Document 2, the present inventors have disclosed an inner layer composed of a core wire of one or a plurality of string-like carbon fiber bundles, an intermediate layer including a resin provided around the core wire, and a periphery of the intermediate layer. A high-strength fiber wire (string-like reinforcing fiber composite) including an outer layer made of a knitted tubular cord provided is reported. The high-strength fiber wire has excellent tensile strength derived from carbon fibers, excellent shear strength, and, in a more preferred form, also has shape variability.
On the other hand, when used in applications where a tensile force is applied such as the above-mentioned tensile material, in some high-strength fiber wires, slippage occurs at the interface between the inner layer and the intermediate layer or between the intermediate layer and the outer layer. It turns out that the problem occurs occasionally. At that time, the carbon fiber bundle constituting the core wire of the high strength fiber wire is locally dispersed, and a part of the carbon fiber yarn constituting the carbon fiber bundle is cut. Tensile strength will decrease.

  In addition, when the conventional high strength fiber wire is bonded and fixed to the end portion and the fixing jig using an adhesive, the high strength fiber wire end portion and the fixing jig portion are sufficiently secured. There was a problem that it was difficult. In order to further increase the adhesive strength, it is possible to loosen the high strength fiber yarn by loosening the end of the high strength fiber wire, but if the high strength fiber yarn is loosened, the high strength fiber yarn itself may be damaged. In many cases, the adhesive strength between the end portion of the high-strength fiber wire and the fixing jig portion was lowered.

JP 2006-348506 A JP 2012-136814 A

In this way, the high-strength fiber wire may not fully utilize the original excellent characteristics of the high-strength fiber yarn even when using a core wire bundled with high-strength fiber yarn such as carbon fiber yarn, There was room for improvement.
Under such circumstances, an object of the present invention is to provide a high-strength fiber wire having a core wire bundled with high-strength fiber yarns such as carbon fiber yarns that can surely obtain the original tensile strength of the high-strength fiber yarns, and applications thereof. Is to provide. Another object of the present invention is to provide a composite material having the high-strength fiber wire and its application product.

The present invention relates to the following inventions.
<1> The core wire and the restraint material in the high strength fiber bundle having a core wire bundled with high strength fiber yarns and a restraint material wound around the core wire and bound together are integrated by a solidifying agent. A high-strength fiber wire in which the solidifying agent is a thermoplastic resin.
<2> A plurality of high-strength fiber bundles each having a core wire bundled with high-strength fiber yarns and a restraining material that is wound around the core wire and bound together are bundled together. A high-strength fiber wire in which strong fiber bundles are integrated by a solidifying agent, and the solidifying agent is a thermoplastic resin.
<3> The high-strength fiber wire according to <1> or <2>, in which at least a part of the surface of the core wire is exposed without being covered with the restraint material.
<4> The high-strength fiber wire according to <1> or <2>, wherein a coverage of the core wire by the restraint material is more than 70%.
<5> The high strength fiber wire according to any one of <1> to <4>, wherein the thermoplastic resin is an epoxy resin.
<6> The high-strength fiber wire according to any one of <1> to <5> , wherein an outer periphery of the core wire is constrained by a constraining material made of a tubular braid or a tubular braid covering the core wire. .
<7> A composite material comprising the high-strength fiber wire according to any one of <1> to <6>.
<8> At least one end of the high-strength fiber wire is inserted into the body of the fixing jig, and the end of the high-strength fiber wire and the body of the fixing jig are bonded and fixed. The composite material according to <7>, wherein the fiber wire and the fixing jig are integrated.

1st invention which concerns on this application is a core wire which bundled the high-strength fiber yarn, and the restraint material which winds the circumference | surroundings of the said core wire, and binds, The said core wire and the said restraint material in the high-strength fiber bundle which have Is a high-strength fiber wire in which the solidifying agent is a thermoplastic resin.
In such a configuration, the periphery of the core wire is wound and bound by the restraint material, so even if a strong force is applied from the outside, the high-strength fiber yarn constituting the core wire is twisted, entangled, or loosened. Therefore, the original tensile strength of the high-strength fiber bundle can be sufficiently maintained.

In the high-strength fiber wire, the core wire and the restraint material may be integrated with a solidifying agent. As the solidifying agent that can be used, a thermoplastic resin is preferably used in order to provide variability. Moreover, it is desirable to use a solidifying agent having a high affinity with the high strength fiber yarn. Details of the solidifying agent will be described later in the embodiment.
When binding core wires using only restraining materials, some high strength fiber yarns may be twisted, entangled, or partly popped out when manufacturing or transporting high strength fiber wires, or during construction as braces. In some cases, however, these are prevented by binding with a solidifying agent.

The second invention according to the present application includes a plurality of high-strength fiber bundles each having a core wire bundled with high-strength fiber yarns and a restraining material that is wound around the core wire and bound. The high-strength fiber wire is a high-strength fiber wire that is bundled and the plurality of high-strength fiber bundles are integrated by a solidifying agent, and the solidifying agent is a thermoplastic resin.
In this embodiment, a plurality of high-strength fiber bundles of the above-mentioned first form are bundled together, and the high-strength fiber bundles are integrated with a solidifying agent, whereby each of the high-strength fiber bundles is integrated. While maintaining the strength, a thicker high-strength fiber wire can be obtained. Also in this embodiment, before bundling a plurality of high-strength fiber bundles, it is preferable to solidify the core wire with a solidifying agent as in the first embodiment.
Also, rather than bundling a large amount of high-strength fiber yarn into a single core wire, the same high-strength fiber yarn is divided into a plurality of core wires, and a plurality of high-strength fiber bundles, each of which is bound with a binding material, are arranged. Bundling and integrating the multiple high-strength fiber bundles with a solidifying agent brings together the high-strength fiber bundles and integrates them with the solidifying agent, so that each high-strength fiber bundle is twisted, Since it is not entangled, the strength of the high strength fiber wire is stabilized.

  Furthermore, when fixing the fixing jig to the end of the high strength fiber wire, if the fixing jig is fixed in units of high strength fiber bundles in which high strength fiber yarns are bundled with a restraining material, The fixing jig can be fixed to the high-strength fiber wire more stably than the ones in which the high-strength fiber yarns are separated.

Moreover, it is preferable that at least a part of the surface of the core wire is exposed without being covered with the restraint material.
The exposed surface of the core wire can function as an adhesive surface when the high-strength fiber wire of the present invention is bonded to another member.
Moreover, when using a solidifying agent, the solidifying agent easily penetrates into the core wire by exposing the surface of the core wire. Furthermore, because the core wire and restraint material form irregularities on the surface of the high strength fiber wire, when tensile force is applied to the high strength fiber wire, slippage in the core wire, restraint material, and solidifying agent is suppressed. .

  In the first and second inventions according to the present application, since the adhesiveness with the fixing jig can be further increased, the core wire is solidified by a solidifying agent, and the coverage of the core wire by the restraining material is It is preferable to be over 70%. Moreover, it is preferable that the core wire is mainly made of carbon fiber yarn that is not twisted and bundled without aligning the fiber directions of the carbon fiber yarn. The core wire and the restraining material may be integrated with a solidifying agent.

Furthermore, 3rd invention which concerns on this application is related with the high strength fiber wire which has a multilayer structure.
As one form thereof, the high-strength fiber wire according to the first and second inventions described above and a cylindrical body made of a fiber material arranged so as to cover the outer periphery of the high-strength fiber wire are solidifying agents. Examples thereof include a high-strength fiber wire having a multilayer structure formed by integration.
When the high strength fibers are exposed like the high strength fiber wires according to the first and second inventions described above, the high strength fiber yarns when the sharps come into contact with the exposed surface of the high strength fiber bundle from the outside. May be cut and the strength of the core wire may be reduced. Here, by using a high-strength fiber wire having a multilayer structure in which a cylindrical body made of a fiber material is provided as an outer layer, it can be protected from sharps and stress from the outside. In addition, it is preferable that the said cylindrical body is a structure which has the knitted structure which knitted the fiber, or the assembled braid structure.

  Further, as another form of the high-strength fiber wire having a multilayer structure according to the third invention, as a high-strength fiber wire having a multilayer structure, a core wire bundled with high-strength fiber yarns and a periphery of the core wire are wound. A plurality of high-strength fiber bundles that are bundled together and bundled, and a cylindrical body made of a fiber material arranged so as to cover the outer periphery of the bundle is composed of the plurality of high-strength fibers Examples thereof include a high-strength fiber wire having a multilayer structure in which a bundle and a solidifying agent are integrated.

When the fixing jig is bonded (adhered and fixed) to the end portion of the high-strength fiber wire according to the third invention, it is possible to improve the bonding property with the fixing jig, so that at least one end portion has a cylindrical shape. It is preferable to have an exposed portion composed of a plurality of high-strength fiber bundles from which the body has been removed. In the case where the fixing jig is coupled to both ends, it is preferable that both end portions are exposed portions.
In particular, in order to further improve the bonding property with the fixing jig, it is preferable that a plurality of high-strength fiber bundles in the exposed portion are divided into a plurality in the fiber direction. The “fiber direction” here refers to the length direction of the resulting high strength fiber wire. The division of the plurality of high-strength fiber bundles in the exposed portion is performed in units of high-strength fiber bundles so that the high-strength fiber bundles themselves are broken and the high-strength fiber yarns are not separated.

  One of the preferable forms to be divided is a so-called bowl-shaped form in which high-strength fiber bundle units are separated into one bundle. In such a form, there is an advantage that the contact area with the adhesive used for bonding with the fixing jig is particularly large. The teacup-shaped end portion can be obtained, for example, by dissolving a plurality of high-strength fiber bundles in the exposed portion with a solvent using a solvent.

On the other hand, in the teacup-like form, it is necessary to use an organic solvent, and the organic solvent may remain in the high-strength fiber bundle, resulting in variations in tensile strength.
Therefore, a so-called bamboo split shape in which a plurality of high-strength fiber bundles in the exposed portion is divided into three or more in the fiber direction from the balance between the tensile strength and the adhesive strength is also a preferred form. The end portion of the bamboo split can be obtained, for example, by heating a plurality of high-strength fiber bundles in the exposed portion to soften the solidifying agent and tearing it to an appropriate number. The bamboo split-like form divided with the high-strength fiber bundles aligned is able to avoid the problem of variation in tensile strength in the teacup shape. Moreover, since the contact area with the adhesive used for bonding to the fixing jig is increased by using the bamboo split shape, the adhesive force is improved as compared with a case where the bamboo is not divided.
Note that the upper limit of division is the number of high-strength fiber bundles in the exposed portion.

  In 3rd invention, it is preferable that the said cylindrical body is comprised by 1 or more types chosen from a polyester fiber, a vinylon fiber, a cellulose fiber, a polyamide fiber, and a polyacetal fiber. When the cylindrical body is composed of these fibers, it not only has sufficient strength as an outer layer in the high-strength fiber wire having a multilayer structure according to the third invention, but also has high chemical resistance against alkalis and the like. It is because it has property or dimensional stability.

  The high-strength fiber wires according to the first, second, and third inventions (including another embodiment of the third invention) may be collectively referred to as “the high-strength fiber wires of the present invention” hereinafter. .

In the high-strength fiber wire according to the present invention, the high-strength fiber bundle is mainly bundled without twisting the carbon fiber yarn, and the fiber directions of the carbon fiber yarn are aligned and entangled. It is preferable. Here, “(the high strength fiber bundle) is mainly composed of carbon fiber yarns” means that 80% or more, preferably 95% or more (including 100%) of the high strength fiber yarns constituting the high strength fiber bundle, The term “fiber direction” refers to the length direction of the high strength fiber wire obtained as described above. Further, “not twisted” means that the number of twists is less than 10 times / m. Preferably it is less than 5 times / m, more preferably less than 3 times / m, still more preferably 0 times / m.
The carbon fiber yarn has a high tensile strength but has a low shear strength and is easily cut. In the high-strength fiber wire of the present invention, as described above, the high-strength fiber yarn (carbon fiber yarn) is not easily twisted, entangled, and not easily broken.

The high-strength fiber wire of the present invention has strength derived from high-strength fibers, is lightweight and excellent in tensile strength, and can be used for various applications.
Suitable applications include reinforcing bars that replace steel bars and PC steel wire substitutes such as tendons, wires, chain substitutes, and rods.

Moreover, the composite material of the present invention comprises the high-strength fiber wire according to the first, second and third inventions (including another embodiment of the third invention), and is combined with any member. It has been
As an example of a suitable composite material, at least one end of a high strength fiber wire is inserted into the body of the fixing jig, and the end of the high strength fiber wire and the body of the fixing jig are bonded and fixed. Thus, a composite material obtained by integrating the high-strength fiber wire and the fixing jig can be mentioned. A fixing jig suitable for the composite material of the present invention includes a fixing jig disclosed in Japanese Patent Application No. 2012-82440 by the present inventors.

  ADVANTAGE OF THE INVENTION According to this invention, the high strength fiber wire provided with the core wire which bundled high strength fiber yarns, such as a carbon fiber yarn which can obtain the original tensile strength of a high strength fiber yarn, is provided. The high-strength fiber wire of the present invention has strength derived from high-strength fibers, and can be used for various applications as a composite material that is lightweight and excellent in tensile strength.

It is a schematic diagram of the high strength fiber wire according to the first embodiment of the present invention. It is a figure which shows the 1st modification of the high strength fiber wire of Embodiment 1 of this invention. It is a figure which shows the 2nd modification of the high strength fiber wire of Embodiment 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 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 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 1, (a) is an enlarged photograph of the high-strength fiber bundle which consists of a core wire bundled with high-strength fiber yarns and a restraint material, and (b) is (a Is a photograph of a state in which a cylindrical body made of a fiber material is arranged on the outer periphery of a bundle of 40 high-strength fiber bundles (before integration with a solidifying agent). It is a photograph of the high-strength fiber wire of Example 2, (a) is an enlarged photograph of the high-strength fiber bundle which consists of a core wire bundled with high-strength fiber yarns and a restraint material, and (b) is a high photograph of (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 strong fiber bundles. It is a photograph for demonstrating the state which fixed the high-strength fiber wire of Example 2 to the fixing jig, (a) is before insertion of the end part of a high-strength fiber wire (thing separated into a high-strength fiber bundle), (b ) Is a photograph after inserting (fixing) 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 3 to the fixing jig, and is a photograph before the insertion of the end part of a high-strength fiber wire (it is not disperse | distributed to a high-strength fiber bundle). It is an external appearance photograph of the edge part (exposed carbon fiber bundle part) of the high strength fiber wire of Example 5.

  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)
A high-strength fiber wire 1a shown in FIG. 1 includes a high-strength fiber bundle 5 including a core wire 2 and a restraining material 3a.
The core wire 2 is a filament having a circular or flat cross section formed by bundling a plurality of high-strength fiber yarns 4 (usually thousands to tens of thousands).
As the high-strength fiber yarn 4, a fiber also called a super fiber can be used. Examples of the high-strength fiber yarn 4 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 2 may be one obtained by using one type of the above high strength fiber yarn, mixing two or more types, or mixing other yarns made of organic fibers as long as the strength and bendability are not impaired.
The core wire 2 may be impregnated with a sizing agent or a sizing agent to the extent that the peripheral surface of the core wire 2 does not hinder the functioning as an adhesive surface.

If the high-strength fiber yarn 4 constituting the core wire 2 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 3a for binding the core wires 2 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 2, the high-strength fiber yarns are arranged so that they are not twisted from the spinning stage, or twists of less than about 10 turns / m. Use the one with

If the high-strength fiber yarn 4 constituting the core wire 2 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 4 are drawn from the creel and bundled to form the core wire 2.

The restraining material 3a binds the core wire 2 so that the high-strength fiber yarns 4 are not separated from the peripheral surface.
In this embodiment, as shown in FIG. 1, a braided restraining material 3 a is formed by winding a fiber to be the restraining material 3 a 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 4 constituting the core wire 2 do not fall apart, for example, a single binding material is wound spirally to bind the core wire (not shown), As shown in FIG. 2, the core wire 2 is bound by a braided string-like restraining material 3 b obtained by winding a fiber to be the restraining material 3 b around the core wire 2 and knitting a round circular knit with a coarse mesh. As shown in FIG. 3, as a binding material for binding the core wire 2 of the high-strength fiber wire 1 c, the core wire 2 is bound by a binding material 3 c in which fibers or the like mentioned in the binding material 3 a are arranged at predetermined intervals. There may be.

  In order to form the constraining material 3a shown in FIG. 1, the core wire 2 is passed through the center of the string making machine, and a braid with a coarse mesh is formed on the peripheral surface of the core wire 2 by the cord making machine. By doing so, the braid-like restraining material 3a is formed on the peripheral surface of the core wire 2, and the core wire 2 is bound so as not to be separated into a long high-strength fiber wire 1a, which is wound around a drum or the like. Can do. Since the high-strength fiber wire 1a is obtained by simply binding the flexible core wire 2 with the restraining material 3a, it can be easily wound around a drum or the like. Therefore, movement and storage are easy.

The binding material is preferably a flexible material, such as polyamide (nylon, etc.), vinylon, polyacryl, polypropylene, vinyl chloride, aramid, cellulose, polyamide, polyester, polyacetal, etc., regenerated fiber such as rayon, acetate, etc. Semi-synthetic fibers, natural fibers such as silk, wool, hemp and cotton, glass fibers and basalt fibers can be used.
When the restraining material is the braid (round punching) of FIG. 1, the restraining material 3a is preferably crossed at a pitch of 0.5 mm to 30 cm with respect to the length direction of the core wire 2, and particularly 0.1 cm. 10 cm is more preferable.

In addition to impregnating and tying the core wire 2 with a sizing agent or a sizing agent, at least one of the high strength fiber yarns 4 constituting the core wire 2 is used to bind the high strength fiber yarns 4 more firmly. The parts may be combined with 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 2 is firmly integrated can be easily placed because it does not lose its shape when placed in a narrow groove or inserted into a deep hole.

As a solidifying agent that can be used, a thermoplastic resin is used in order to provide variability. 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 above-described resin (solidifying agent) on the core wire 2 is not particularly limited, such as coating the resin on 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 apparatus as shown in FIG. 4A can be used.
In the case where a thermoplastic resin is coated as a resin, when the high strength fiber bundle 5 according to Embodiment 1 is manufactured using an apparatus as shown in FIG. 4A, the high strength fiber yarn supplied from the creel 7a is used. After the core wire 2 is passed through a string making machine (not shown) or a circular knitting machine (not shown) to form a restraint material, a thermoplastic resin or a thermoplastic resin melted or dissolved in a solvent is added. Immerse it in the emulsion containing it, and then squeeze with mangle as necessary, remove the excess thermoplastic resin, adjust the wire diameter with the die 7b, and then dry and harden in the heating furnace 7c as necessary. Apply coating. Then, if the dried and hardened material is cut into a predetermined length by the cutting machine 7d, 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.
Alternatively, the high-strength fiber bundle 5 can be manufactured using an apparatus as shown in FIG. 4B. 4B, the same components as those in FIG. 4A are denoted by the same reference numerals and description thereof is omitted. In the apparatus shown in FIG. 4B, a high-strength fiber bundle in which the core wire 2 made of high-strength fiber yarn supplied from the drum 7e is constrained by a constraining material is formed and melted or dissolved in a solvent, or a thermoplastic resin. When immersing and passing through an emulsion containing, the resin is impregnated to the inside by squeezing with a die 7f. In addition, bumping is prevented by passing the preheating furnace 7g before drying with the heating furnace 7c.

In the high-strength fiber wires 1a to 1c according to the first embodiment, the surface of the core wire 2 is not completely covered with the restraining materials 3a to 3c, and a part thereof is not covered and exposed. By exposing the surface of the core wire 2 in this way, when the above-described resin is coated on the core wire 2, the resin easily penetrates into the core wire 2. As a result, the high-strength fiber threads 4 constituting the core wire 2 Bonding power can be improved.
Moreover, when joining the high strength fiber wire 1a-1c with another member, the exposed surface of the said core wire 2 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 2 will be described.
The coverage of the core wire 2 is the ratio of the area which a restraint material occupies with respect to the area of the whole surrounding surface of a high strength fiber wire. When the constraining material is uniformly arranged on the peripheral surface of the core wire 2, 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 the area that functions as an adhesive surface is widened by bonding the adhesive to the peripheral surface of the core wire 2 when bonding to another member.
In particular, it is 70% or less from the viewpoint of improving the adhesive strength with other members using the high strength fiber wire 1a. 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 4 constituting the core wire 2 are not separated and can maintain a string shape or a rod shape.

  In the high-strength fiber wire according to the first embodiment, the cylindrical body covering the outer periphery according to the embodiment, which is sufficiently penetrated into the core wire 2 by the solution containing the solidifying agent used in the manufacturing process, will be described later. If not, the covering rate with the restraining material 3a may be more than 70%, and the surface of the core wire 2 may be covered with the restraining material 3a to such an extent that the surface cannot be visually confirmed. That is, the restraining material 3a also serves as a cylindrical body. By adopting such a configuration, even if the work such as winding on a drum is performed in a state before the solidifying agent is applied to the high-strength fiber bundle composed of the core wire 2 and the restraining material 3a, The possibility that the core wire 2 jumps out (gazes) from the gap is reduced, and workability is improved. Moreover, even when such a high-strength fiber wire is used as a brace material or a reinforcing reinforcing material for concrete, it is possible to prevent the core wire such as carbon fiber from being disconnected even if it comes into contact with sharp objects such as gravel. it can. Furthermore, since one high-strength fiber wire can be made thin, it is excellent in design.

In this case, it is preferable that the high strength fiber wire 5 is not twisted. When a plurality of high-strength fiber wires 5 are bundled, and each high-strength fiber wire 5 is used without being integrated with a solidifying agent, a plurality of bundled high-strength fibers 5 In order to prevent the wire 5 from being scattered, the bundle of a plurality of bundled high-strength fiber wires 5 may be twisted less than 10 times / m. From the viewpoint of tensile strength, it is preferably less than 5 times / m, more preferably less than 3 times / m.
The thickness of the high-strength fiber wire in the present embodiment in which the coverage with the constraining material 3a is more than 70% may be arbitrarily set depending on the application, but the thin high-strength fiber wire has a diameter of 5 mm or less. Is preferably 4 mm or less, more preferably 3 mm or less.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIG. In FIG. 5, the same components as those in FIGS.

FIG. 5B is a partially enlarged side view of the high-strength fiber wire 1d according to the second embodiment, and FIG.
The high-strength fiber wire 1d includes 19 high-strength fiber bundles 5 composed of the core wire 2 and the restraining material 3a, and the 19 high-strength fiber bundles 5 are bundled and bundled. 5 is filled with a solidifying agent 5a and integrated with the solidifying agent 5a.
Here, the high strength fiber bundle 5 has the same configuration as the above-described high strength fiber wire 1a shown in FIG. Moreover, in this embodiment, although the thing of the same structure as the high strength fiber wire 1a is used as the high strength fiber bundle 5, it is not limited to this, The high strength fiber of the same structure as the high strength fiber wires 1b and 1c Other forms of high strength fiber bundles can be used, including bundles.

The number of high-strength fiber bundles 5 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 1d. For example, when a bundle of 24,000 carbon fiber yarns (24k) is used as the core wire, the number of high-strength fiber bundles 5 is about 1 to 500, which is suitable for uses such as brace materials.
Moreover, when using as a composite material which integrated the fixing jig, for example as a reinforcing material instead of a reinforcing bar, the number of the high strength fiber bundles 5 is about 1 to 500.
Moreover, when using a 12,000 bundle of carbon fiber yarns (12k) as a core wire to obtain a high strength fiber wire for use as a wire, the number of high strength fiber bundles 5 is about 1 to 1000. is there.

  As the solidifying agent 5a that can be used, either a thermoplastic resin or a thermosetting resin may be used in the same manner as in the first embodiment. However, in order to provide variability, a thermoplastic resin can be preferably used. The solidifying agent 5a 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.

The method for integrating the plurality of high-strength fiber bundles 5 with the solidifying agent 5a is not particularly limited. For example, when the solidifying agent 5a is a thermoplastic resin, in the same manner as in the first embodiment, using a device as shown in FIG. 4A or 4B, in a state where a plurality of high-strength fiber bundles 5 are aligned, What is necessary is just to impregnate the molten thermoplastic resin and to cool.
The solidifying agent 5a only needs to be integrated with the high-strength fiber bundles 5, and it is not necessary to impregnate the solidifying agent 5a until it reaches the center of the core wire 2, but it is impregnated to the center of the core wire 2 and the entire core wire 2 is cured. You may let them.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIG. In FIG. 6, the same components as those in FIGS.

FIG. 6A is an external view of a high-strength fiber wire 1e according to Embodiment 3, and FIG. 6B is a cross-sectional view.
The high-strength fiber wire 1e includes a cylindrical body 6 made of a fiber material so as to cover the outer periphery of the high-strength fiber wire 1d described in the second embodiment of the present invention. Is a high-strength fiber wire having a multilayer structure in which the solidifying agent 5a is integrated.
In the third embodiment, the high-strength fiber wire 1d is used as the inner layer of the multi-layer structure high-strength fiber wire 1e. However, the present invention is not limited to this, and other applications similar to the first and second embodiments of the present invention are used. High-strength fiber wire can be used.

The outer layer in the high-strength fiber wire 1e having a multilayer structure is formed of a cylindrical body 6 and has a role of protecting the inner layer high-strength fiber wire 1d, which is a core wire, from the outside. As shown in FIG. 6, the tubular body 6 is a tubular body having a knitted structure in which a fiber material is knitted or a braided structure in which the fiber material is assembled.
Since the high-strength fiber wire 1e becomes a rod-shaped body by the solidifying agent 5a, 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 1d is used as it is, the high-strength fiber yarn 4 may be cut when a sharp object comes into contact with the exposed surface of the high-strength fiber bundle 5 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 4, the carbon fiber yarn has a high tensile strength, but a shear strength is not so high.
Here, the high-strength fiber wire 1e can protect the internal high-strength fiber wire 1d from sharp objects and stress by providing an outer layer made of the cylindrical body 6 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 6. 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 6 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 6 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.
Further, in the braid structure, since the diameter is reduced particularly when the solidifying agent is solidified when it is stretched, the cylindrical body 6 that is an outer layer and the high strength contained in the inner layer are manufactured when tension is applied. It is more preferable also from the point that adhesiveness with the fiber wire 1d increases.

As the fiber constituting the cylindrical body 6 of the outer layer, resin fiber made of natural resin or synthetic resin, glass fiber, basalt fiber, or 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 usage of the high strength fiber wire 1e, if the outer layer cylindrical body 6 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 6 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. In addition, when using as a reinforcement of concrete, if the unevenness | corrugation is provided in the cylindrical body 6 of an outer layer, the intensity | strength of a concrete structure can be improved more.

  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 6 is not particularly limited. For example, a conventionally known string making machine, a 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 1e of a multilayer structure is demonstrated, it is not limited to the method illustrated here.
The method of providing the cylindrical body 6 as the outer layer around the high-strength fiber wire 1d is not particularly limited. For example, the high-strength fiber wire 1d is first arranged, and then the outer layer is assembled or knitted around the high-strength fiber wire 1d. A method of forming the outer layer;
First, a method of forming an outer layer as the cylindrical body 6 and inserting the high-strength fiber wire 1d into the outer layer;
Etc.

After temporarily fixing the cylindrical body 6 of the outer layer around the high-strength fiber wire 1d as the inner layer, both are integrated by the solidifying agent 5a. In addition, as the solidifying agent 5a, the thing similar to what was demonstrated in the said Embodiment 1, 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 integration method is appropriately selected depending on the type of the solidifying agent 5a. For example, when the solidifying agent 5a is a thermoplastic resin, the thermoplastic resin obtained by melting the high-strength fiber wire 1d temporarily fixed with the cylindrical body 6 of the outer layer. It suffices to cool the substrate after being immersed in it.
In addition, after the thermoplastic resin layer is provided on the high strength fiber wire 1d, the outer cylindrical body 6 is formed around and heated in that state, so that the thermoplastic resin layer is softened to become the outer layer. You may make it integrate with the cylindrical body 6. FIG.
Moreover, the cylindrical body 6 which is an outer layer to be used may be coated in advance with a thermoplastic resin serving as the solidifying agent 5a, and then the high strength fiber wire 1d may be inserted and heated.

In the third embodiment, as the inner layer of the high-strength fiber wire 1e having a multi-layer structure, a high-strength fiber wire 1d in which the high-strength fiber bundle 5 is integrated with a solidifying agent 5a is used, and an outer layer is formed around it. Although the high-strength fiber wire 1d and the cylindrical body 6 are further integrated with the solidifying agent 5a by arranging the solid body 6, the high-strength fiber wire having a multilayer structure is not limited thereto.
For example, as another embodiment, a high-strength fiber wire having a multi-layer structure is in a state in which a plurality of high-strength fiber bundles 5 are aligned, and is not integrated with a solidifying agent 5a, but an outer layer around it. A string-like object in which a certain tubular body 6 is arranged may be formed, and then the string-like object may be integrated with the solidifying agent 5a. In the case where the solidifying agent 5a 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 multilayer structure, a plurality of high strength fiber bundles 5 as an inner layer and a cylindrical body 6 as an outer layer are simultaneously solidified with the same solidifying agent 5a. 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.
When the solidifying agent 5a is a thermoplastic resin, the high-strength fiber wire is further pressed by a heated mold or passed through a heated die of a specific shape so that the cross section of the high-strength fiber wire is circular. Any shape such as an ellipse, a triangle, and a quadrangle is also possible. Further, by applying pressure while heating, the adhesion between the high-strength fiber wire 1d and the solidifying agent 5a is improved, and the design and strength of the high-strength carbon fiber wire are improved, and the shape and strength are stabilized. be able to.

The high-strength fiber wire according to the third embodiment has a plurality of strips from which the cylindrical body has been removed in order to enhance the adhesion with the fixing jig when the end portion is fixed to the fixing jig with an adhesive. It is preferable to have an exposed portion made of a high-strength fiber bundle.
In particular, in order to further increase the adhesive force, a plurality of high-strength fiber bundles in the exposed portion are separated into one bundle for each high-strength fiber bundle, or a so-called teacup-like form or a plurality of high-strength fiber bundles in the exposed portion. The so-called bamboo split shape in which the high-strength fiber bundle is divided into 3 to 15 in the fiber direction is more preferable.

[Use of high-strength fiber wire of the present invention]
The high-strength fiber wire of the present invention can be applied to all industrial fields such as civil engineering, construction, ships, mining and fishing, and its use is not limited.
Among the usage applications, the high strength fiber wire of the present invention has strength derived from high strength fibers that are not covered by rebar, is lightweight and has good compatibility with concrete, and also has high resistance to alkali in concrete. When used as a concrete reinforcement as a substitute for reinforcing bars, the strength of the concrete can be improved, and the strength deterioration of the concrete structure due to corrosion of the reinforcement can be avoided.
In addition, the high strength fiber wire of the present invention has high maintenance costs such as buildings and bridges using precision machines that have problems with magnetism, laying of harbors, offshore wind power generation facilities and ships, where salt damage is likely to occur, and high-rise buildings. In such a case, it can be particularly suitably used for applications where the use of reinforcing bars is not desirable.

In concrete structures, so-called alkali-aggregate reactions occur when the alkaline cement aqueous solution contained in concrete reacts with specific components of the aggregate (gravel and sand), reinforcing bars, causing abnormal expansion and accompanying cracks. Although it is a cause of neutral deterioration, the high-strength fiber wire of the present invention is a cylindrical body having a knitted structure or a braided structure even when it has an outer layer, and therefore has flexibility, and this phenomenon Hard to be influenced.
In addition, the high strength fiber wire of the present invention has excellent strength derived from high strength fiber and is lightweight, so it is a brace material used for buildings such as steel structures, reinforced concrete and wooden structures, bridges such as bridges, It can be preferably used as a reinforcing material (including a replacement for a reinforcing metal fitting). In addition, even if it is thin, it has sufficient strength, so lighting, furniture such as tables, wires that hang stairs, furniture such as partitions, interiors such as tables, chairs and handrails, fences, fences, Supports for ivy and the like used for green curtains, exteriors such as nets can be used for various things, and it is also possible to manufacture buildings with excellent design.
It is also suitable as an alternative to chains used for mooring offshore wind power generation facilities and ships that are prone to salt damage.

  In particular, in the high-strength fiber wire of the present invention, when a thermoplastic resin is used as a solidifying agent, it can be stored and transported by being wound around a drum or the like by having heat and being variable. Brace material can be supplied.

Further, the high strength fiber wire of the present invention may be combined with an arbitrary member and used as a composite material (hereinafter referred to as “composite material of the present invention”).
The member to be combined with the high strength fiber wire is not particularly limited, but can be firmly fixed to the fixing jig.
As an example of a suitable composite material, at least one end of a high strength fiber wire is inserted into the body of the fixing jig, and the end of the high strength fiber wire and the body of the fixing jig are bonded and fixed. Thus, a composite material obtained by integrating the high-strength fiber wire and the fixing jig can be mentioned.

  The high-strength fiber wire of the present invention can be used by separating into high-strength fiber bundle units when fixing the end portion with a fixing jig, so that the bonding area is not damaged without damaging the high-strength fiber yarn. Can be widened. Therefore, the adhesive force between the high strength fiber wire and the fixing jig can be increased, and the high strength fiber wire and the fixing jig 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, which is the outer layer of the portion inserted into the fixing jig, is removed from the high-strength fiber wire at the end. 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 in units of high-strength fiber bundles, may be divided into an appropriate number, or may be used without being distributed.

  The use of the exposed portion as one unit without breaking up into high-strength fiber bundle units has the advantage that it is not necessary to remove the solidifying agent in the exposed portion of the inner layer and that it can be easily inserted into the fixing jig.

On the other hand, in order to further enhance the binding property with a stronger fixing jig, a plurality of high-strength fiber bundles in the exposed portion are separated into one bundle per high-strength fiber bundle unit, so-called teacup-shaped In some cases, the form is preferred. In some cases, a so-called bamboo split shape in which a plurality of high-strength fiber bundles in the exposed portion is divided into three or more in the fiber direction may be preferable.
Therefore, the bondability between the exposed portion and the fixing jig varies depending on various conditions such as the type of high strength fiber used, the number of high strength fiber bundles, the contact area with the fixing jig, etc. Is appropriately determined in consideration of adhesiveness and handling properties.

Also, in high-strength fiber wires, when using a core wire that has sufficiently penetrated into the core wire and has been solidified by the solidifying agent to the inside, it is also possible to restrain without using a cylindrical body that covers the outer periphery. The covering ratio with the material may be more than 70%, and the core wire may be coated with the restraining material to such an extent that the surface of the core wire cannot be visually confirmed. In this case, it is more preferable that the core wire and the restraining material are integrated with a solidifying agent.
In such a high strength fiber wire, since the restraint material also serves as an outer layer, even when the high strength fiber wire is used as a bracing material or a reinforcing reinforcing material for concrete, the core wire such as carbon fiber has gravel and the like. Even if it comes into contact with a sharp object, disconnection can be prevented. Furthermore, since one high-strength fiber wire can be made thin, it is excellent in design.
A high-strength fiber wire with a covering rate of more than 70% with a restraining material is wound around a drum or the like before the core wire before the solidifying agent is applied is integrated with the restraining material. However, there is also an advantage that workability is improved by reducing the possibility that the core wire jumps out (gazes) from the gap between the restraining materials.

The core wire is solidified by a solidifying agent, and a plurality of high-strength fiber wires with a covering ratio of more than 70% are used, and the high-strength fiber wires are integrated with the solidifying agent. If the end of a high-strength fiber wire is fixed to a fixing jig such as a steel pipe using an adhesive, the contact area between the high-strength fiber wire and the adhesive can be seen in one steel pipe. As a result, the adhesive strength between the high-strength fiber wire and the steel pipe or the like is stabilized and improved, and the excellent strength derived from the core wire can be stably exhibited.
In addition, even when using a bundle of a plurality of high-strength fiber wires, each high-strength fiber wire is not integrated with a solidifying agent, and a single high-strength fiber is used. Since the wire is thin, the degree of freedom of each high-strength fiber wire increases, and of course, if it is heated, it can be easily wound on a drum without further heating etc. can do.
Moreover, it is possible to easily arrange a high-strength fiber wire following a shape even for a complicated shape.

  The high-strength fiber wire of the present invention can be easily connected to a fixing jig and has excellent strength as compared with conventional high-strength fiber wires, and has a superior strength. It can be suitably used as a material.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to a following example, unless the summary is changed.

Example 1
As the restraint material 1, polyester fiber (one bundle of 500 decitex polyester fiber bundle and one 50 decitex polyester fiber bundle) is used, and a 24K carbon fiber bundle (T700SC manufactured by TORAYCA (TM) Toray Industries, Inc.) -24000 ") was spirally wound around the core wire, and the core wire consisting of the carbon fiber bundle was restrained to obtain one high strength fiber bundle. FIG. 7A 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.7 (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. In this way, a high strength fiber wire of Example 1 having a multilayer structure in which an inner layer composed of a high strength fiber bundle and an outer layer composed of a 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) as a fixing jig are inserted into both ends of the high-strength fiber wire, 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 1 was 111 kN, which was equivalent to the estimated strength 113 kN of 40 carbon fiber bundles of 24K. The “estimated strength” is a value that is 70% of the “expected strength” that is 90% of the theoretical value of the tensile strength of the carbon fiber bundle.
Table 1 summarizes the configuration and tensile strength of the high strength fiber wire of this example.

Example 2
24K carbon fiber bundles are obtained by using two polyester fibers (50 decitex polyester fiber bundles) as the constraining material 2 and winding one spirally in the S direction and the other spirally in the Z direction. A high-strength fiber bundle was obtained by constraining the core wire. FIG. 8A 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.8 (b) is shown.
The mass per unit length of the string-like material was 89 g / m, the mass of the bundle (inner layer) composed of high-strength fiber bundles was 70 g / m, and the mass of the cylindrical body 6 (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. In this way, a high strength fiber wire of Example 2 having a multilayer structure in which an inner layer composed of a high strength fiber bundle and an outer layer composed of a 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. 9A 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 was 109 kN, which was equivalent to the estimated strength of 113 kN of 40 carbon fiber bundles of 24K.
Table 1 summarizes the configuration and tensile strength of the high strength fiber wire of this example.

Example 3
Twenty high-strength fiber bundles obtained in the same manner as the high-strength fiber bundle in Example 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 6 (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 (XNH6850RIN-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. In this manner, a high strength fiber wire of Example 3 having a multilayer structure in which an inner layer composed of a high strength fiber bundle and an outer layer composed of a 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. 10 shows an appearance photograph. Unlike Example 2, 20 carbon fiber bundles restrained by the restraining material exposed at both ends of the high-strength fiber wire were used as one piece without breaking into a teacup shape. 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 3 was 72.9 kN, which exceeded the estimated strength of 56.6 kN of 20 24K carbon fiber bundles by nearly 30%.
Table 1 summarizes the configuration and tensile strength of the high strength fiber wire of this example.

Example 4
A string-like object was produced by the same method as in Example 2 (see FIG. 8B). 100 parts by mass of thermoplastic epoxy resin (TPEP-AA-MEK-05B, manufactured by Nagase ChemteX Corporation) as a solidifying material for the produced string-like material, curing agent (XNH6850RIN-K, manufactured by Nagase ChemteX Corporation) 6 A solution (viscosity 100 mPa · s, B-type viscometer, rotor No. 20, 12 rpm, Toki Sangyo Co., Ltd .: TVB-15 type viscometer) consisting of 5 parts by mass was applied at room temperature (20 ° C.) and FIG. A high strength fiber wire of Example 4 having a multilayer structure in which an inner layer composed of a high strength fiber bundle and an outer layer composed of a tubular body were integrated was obtained using the apparatus shown in FIG. The heat treatment time is 20 minutes at 150 ° C.
In the obtained high strength fiber wire, no twist was given to the high strength fiber yarn (carbon fiber yarn), the high strength fiber bundle and the high strength fiber material. It was also confirmed that the carbon fiber yarn at the center was also adhered.
A high-strength fiber wire was cut to a length of 60 cm, and unlike Example 2, it was bonded to a steel pipe without removing the cylindrical bodies at both ends.
Insert both ends of high-strength fiber wire into a steel pipe (length 240 mm, inner diameter 18.2 mm, outer diameter 27.2 mm), and urethane adhesive (UM890 modified 1 main part 1 part by weight, curing agent 2) It was fixed using a mass part (made by Cemedine Co., Ltd.), and the tensile strength was measured. The tensile strength of the high strength fiber wire of Example 4 was 79 kN, and the strength of about 70% of the estimated strength 113 kN of 40 carbon fiber bundles of 24K was exhibited.
Table 1 summarizes the configuration and tensile strength of the high strength fiber wire of this example.

Example 5
A string-like object was produced by the same method as in Example 2 (see FIG. 8B). 100 parts by mass of thermoplastic epoxy resin (TPEP-AA-MEK-05B, manufactured by Nagase ChemteX Corporation) as a solidifying material for the produced string-like material, curing agent (XNH6850RIN-K, manufactured by Nagase ChemteX Corporation) 6 A solution (viscosity 100 mPa · s, B-type viscometer, rotor No. 20, 12 rpm, Toki Sangyo Co., Ltd .: TVB-15 type viscometer) consisting of 5 parts by mass was applied at room temperature (20 ° C.) and FIG. A high strength fiber wire of Example 5 having a multilayer structure in which an inner layer made of a high strength fiber bundle and an outer layer made of a cylindrical body were integrated was obtained using the apparatus shown in FIG. The heat treatment time is 20 minutes at 150 ° C.
In the obtained high strength fiber wire, no twist was given to the high strength fiber yarn (carbon fiber yarn), the high strength fiber bundle and the high strength fiber material. 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 60 cm, and the cylindrical body portions at both ends thereof were cut by 24 cm to expose the internal high-strength fiber bundle (carbon fiber bundle). Next, unlike Example 2, the high-strength fiber wire was heated to 150 ° C. without breaking the carbon fiber bundle using an organic solvent, and the end of the high-strength fiber wire (exposed carbon fiber bundle was heated while hot). Part) was torn into about 35 pieces to make a bamboo split. The appearance of the end portion (exposed carbon fiber bundle portion) of the high strength fiber wire after tearing is shown in FIG.
Insert both ends of high-strength fiber wire into a steel pipe (length 240 mm, inner diameter 18.2 mm, outer diameter 27.2 mm), and urethane adhesive (UM890 modified 1 main part 1 part by weight, curing agent 2) It was fixed using a mass part (made by Cemedine Co., Ltd.), and the tensile strength was measured.
The tensile strength of the high strength fiber wire of Example 5 was 129 kN on average. The N number was 50 times, the maximum value was 146 kN, and the minimum value was 81 kN. The tensile strength of the high-strength fiber wire of Example 5 exceeded the estimated strength of 113 kN of the tensile strength of 40 carbon fiber bundles of 24K by nearly 1.4% on average.
Table 1 summarizes the configuration and tensile strength of the high strength fiber wire of this example.

Example 6
A high-strength fiber wire was obtained in the same manner as in Example 5 except that a 24K carbon fiber yarn twisted 3 times / m was used as the core wire, and the tensile strength was measured in the same manner.
The average tensile strength of the high strength fiber wire of Example 6 was 125 kN. The N number was 50 times, the maximum value was 129 kN, and the minimum value was 120 kN. The tensile strength of the high-strength fiber wire of Example 6 exceeded the estimated tensile strength 113 kN of 40 carbon fiber bundles of 24K by an average of nearly 1.1%.
Table 1 summarizes the configuration and tensile strength of the high strength fiber wire of this example.

Example 7
A single 24K carbon fiber bundle is used as the core wire bundled with high-strength fiber yarns, polyester fibers (1100 decitex polyester fiber bundles) are used as the restraining material 3, and a stringing machine (24 punching machine) is used, The entire surface around the 24K carbon fiber, which is the core wire, was constrained with polyester fiber by staking. The coverage of the core wire by the restraint material 3 exceeded 70%.
Next, 100 mass parts of a thermoplastic epoxy resin (TPEP-AA-MEK-05B, manufactured by Nagase ChemteX Corporation) as a solidifying material for the restrained carbon fiber bundle, a curing agent (XNH6850RIN-K, Nagase ChemteX Corporation) (Made by company) 6.5 parts by mass solution (viscosity 100 mPa · s, B-type viscometer, rotor No. 20, 12 rpm, Toki Sangyo Co., Ltd .: TVB-15 type viscometer) at room temperature (20 ° C.) 4B, using the apparatus shown in FIG. 4B, having a core wire bundled with high-strength fiber yarns, and a binding material that is wound around the core wire and bound together, and the core wire and the binding material are integrated with a solidified material. Thus, a high strength fiber wire of Example 7 was obtained. The heat treatment time is 20 minutes at 150 ° C.
The obtained high-strength fiber wire had a diameter of 2.0 mm (measured with calipers), and the high-strength fiber yarn (carbon fiber yarn), the high-strength fiber bundle, and the high-strength fiber material were not twisted. It was also confirmed that the carbon fiber yarn at the center was bonded.
The high-strength fiber wire was cut to 60 cm, bundled 40 pieces, and twisted about once / m in order to suppress the variation.
40 high-strength fiber wires bundled at both ends are inserted into threaded steel pipes (length 240 mm, inner diameter 18.2 mm, outer shape 27.2 mm), urethane adhesive (UM890 modified 1 main part 1 part by mass, cured 2 parts by mass of the agent (made by Cemedine Co., Ltd.) and the tensile strength was measured. The tensile strength of the high-strength fiber wire of Example 7 was an average of 141 kN, which exceeded the estimated strength 113 kN of 40 carbon fiber bundles of 24K by nearly 2.5%. The N number was 50 times, the maximum value was 145 kN, the minimum value was 137 kN, and the variation in tensile strength was small.
Table 1 summarizes the configuration and tensile strength of the high strength fiber wire of this example.

  The high-strength fiber wire of the present invention fully exhibits the mechanical properties such as the tensile strength and elastic modulus inherent to high-strength fiber yarns such as carbon fiber yarns. Since it can be applied to the industrial field, it is industrially promising.

1a to 1e High-strength fiber wire 2 Core wire 3a, 3b, 3c Restraint material 4 High-strength fiber yarn 5 High-strength fiber bundle 5a Solidifying agent 6 Cylindrical body (outer layer)
7a Creel 7b Dies 7c Heating furnace 7d Cutting machine 7e Drum

Claims (11)

The core wire and the restraint material in the high strength fiber bundle comprising a core wire bundled with high-strength fiber yarns and a restraining material that is wound around the core wire and bound together are integrated by a solidifying agent. ,
The outer periphery of the core wire is constrained by a constraining material made of a cylindrical braid or a tubular braid covering the core wire,
A high-strength fiber wire characterized in that the solidifying agent is a thermoplastic resin (however, around the core wire between the core wire and a constraining material comprising a tubular braid or a tubular braid covering the core wire) Except those with an intermediate layer containing resin provided) . A plurality of high-strength fiber bundles having a core wire bundled with high-strength fiber yarns and a binding material that is wound around the core wire to bind them together are bundled, and the plurality of high-strength fiber bundles Is integrated by a solidifying agent,
A high-strength fiber wire, wherein the solidifying agent is a thermoplastic resin. The high-strength fiber wire according to claim 2 , wherein an outer periphery of the core wire is constrained by a constraining material made of a tubular braid or a tubular braid covering the core wire. The high-strength fiber wire according to any one of claims 1 to 3 , wherein at least a part of the surface of the core wire is exposed without being covered with the restraint material. The high-strength fiber wire according to any one of claims 1 to 3, wherein a covering rate of the core wire by the restraining material is more than 70%. The high-strength fiber wire according to any one of claims 1 to 3, wherein the outer peripheral surface of the core wire is covered with a restraining material to such an extent that the surface of the core wire cannot be visually confirmed. The high-strength fiber wire according to any one of claims 1 to 6 , wherein the thermoplastic resin is an epoxy resin. The high strength fiber wire according to any one of claims 1 to 7, wherein the high strength fiber yarn is a carbon fiber yarn or a basalt fiber yarn. The high-strength fiber wire according to any one of claims 1 to 8, wherein the thickness of the high-strength fiber wire is 5 mm or less. A composite material comprising the high-strength fiber wire according to any one of claims 1 to 9 . At least one end of the high strength fiber wire is inserted into the body of the fixing jig, and the end of the high strength fiber wire and the body of the fixing jig are bonded and fixed. The composite material according to claim 10 , wherein the composite material is integrated with a fixing jig.