KR101987211B1 - Method of manufacturing for textile composite with smart composite fiber using 3d printer and textile composite with smart composite fiber - Google Patents

Abstract

The present invention relates to a manufacturing method of a composite woven fiber mixed with a smart composite fiber using a 3D printer, which comprises the steps of: (a) weaving a lower carbon fiber layer using a fiber feeder and a weaving machine of the 3D printer; (b) laminating a lower polymer layer on the lower carbon fiber layer using a polymer injector of the 3D printer, and forming a graphene layer on the lower polymer layer using a graphene particle ejecting device of the 3D printer, and laminating an upper polymer layer by injecting a polymer onto the graphene layer using the polymer injector to form a smart composite fiber; and (c) weaving an upper carbon fiber layer on the smart composite fiber using the fiber feeder and the weaving machine.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for fabricating a composite woven fabric in which a smart composite fiber is mixed using a 3D printer. [0002]

The present invention relates to a method for producing a composite woven fiber mixed with a smart composite fiber using a 3D printer, and a composite woven fiber in which a smart composite fiber is blended.

The composite material using the conventional smart composite fiber is manufactured by inserting or stitching in the form of a line through the prepreg shape or the fabric composite layer by hand. In other words, they are inserted into the composite material by arranging them in a line between the layers of the fiber composite or through the composite material using a stitching method. However, this method causes damage to the fiber composite material, which causes deterioration of the mechanical / physical properties of the composite structure, and it is difficult to uniformly arrange the smart composite fiber.

The background technology of the present application is disclosed in Korean Patent Laid-Open Publication No. 10-2017-0120417.

The present invention has been made to solve the problems of the prior art described above, and it is an object of the present invention to prevent the deterioration of physical properties of a composite material without using a method of arranging in a line between layers of a fiber composite material, The present invention is to provide a method of manufacturing a composite weaving fiber in which a smart composite fiber is mixed with a 3D printer capable of improving the damage detection capability by widening the detection range of damage of the composite material, and a composite woven fabric in which a smart composite fiber is mixed.

It should be understood, however, that the technical scope of the embodiments of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to a first aspect of the present invention, there is provided a method of fabricating a composite woven fiber comprising the steps of: (a) weaving a lower carbon fiber layer using a fiber feeder and a loom of a 3D printer; (b) stacking a lower polymer layer on the lower carbon fiber layer using the polymer jetting device of the 3D printer, forming a graphene layer on the lower polymer layer using the graphene particle discharging device of the 3D printer, Forming a smart composite fiber by laminating an upper polymer layer by spraying a polymer onto the graphene layer using the polymer injector; and (c) forming a smart composite fiber on the smart composite fiber using the fiber feeder and the loom. And weaving the upper carbon fiber layer.

The composite woven fiber according to the second aspect of the present invention can be manufactured by a method of producing a composite woven fiber in which a smart composite fiber is mixed with a 3D printer according to the first aspect of the present invention.

The composite woven fiber according to the third aspect of the present application comprises: a lower carbon fiber layer having a plurality of carbon fiber members in a woven form; A smart composite fiber comprising a lower polymer layer formed on the lower carbon fiber layer, a graphene layer formed on the lower polymer layer, and an upper polymer layer formed on the graphene layer; And a top carbon fiber layer having a plurality of carbon fiber members in a woven form and being formed on the smart composite fiber.

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments in the drawings and the detailed description of the invention.

According to the above-described task solution of the present invention, a lower carbon fiber layer, a smart composite fiber having a lattice pattern, and an upper carbon fiber layer forming a woven structure are sequentially laminated using a 3D printer to form a woven structure, Composite woven fibers with mixed fibers are fabricated. By combining with smart composite fibers, it is possible to prevent deterioration of the properties of composite weave fibers and to improve the damage detection ability of composite structures by varying patterns of smart composite fibers.

FIG. 1 is a schematic flowchart of a method for producing a composite woven fiber in which a smart composite fiber is mixed using a 3D printer according to an embodiment of the present invention.
FIG. 2 is a conceptual exploded view of a composite weave fiber in which a smart composite fiber is mixed according to an embodiment of the present invention.
3 is a plan view of a lower carbon fiber layer according to one embodiment of the present application.
4 is a cross-sectional view of a composite woven fabric in which a smart composite fiber is mixed according to one embodiment of the present application.
5 is a top view of an upper carbon fiber layer according to one embodiment of the present application.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

It will be appreciated that throughout the specification it will be understood that when a member is located on another member "top", "top", "under", "bottom" But also the case where there is another member between the two members as well as the case where they are in contact with each other.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

In the description of the embodiments of the present invention, terms (first direction, second direction, and the like) related to directions and positions are set based on the arrangement states of the respective structures shown in the drawings. For example, referring to FIG. 2, the 2: 00-8 o'clock direction may be the first direction, and the 4: 00-10 o'clock direction as a whole may be the second direction and the like.

The present invention relates to a method for producing a composite woven fiber in which a smart composite fiber is mixed using a 3D printer, and a composite woven fiber in which a smart composite fiber is blended.

Composite Weft Fabric Mixed with Smart Composite Fiber Using 3D Printer According to the Present Invention Composite weave fiber fabricated by the fabrication method of fiber can be applied to various structures such as automobile, ship, aircraft and the like in order to detect the stability and damage of the structure in real time .

First, a method for producing a composite woven fiber in which a smart composite fiber is mixed using a 3D printer according to an embodiment of the present invention (hereinafter, referred to as a " method for producing a composite woven fiber in which a smart composite fiber is mixed using the 3D printer) .

FIG. 1 is a schematic flowchart of a method for producing a composite woven fiber in which a smart composite fiber is mixed using the 3D printer. FIG. 2 is a conceptual exploded view of a composite weave fiber in which a smart composite fiber is mixed according to an embodiment of the present invention. 3 is a plan view of a lower carbon fiber layer according to one embodiment of the present application.

Referring to FIG. 1, a method of fabricating a composite weave fiber in which a smart composite fiber is mixed using the 3D printer includes a step (S100) of weaving a lower carbon fiber layer 100.

The lower carbon fiber layer 100 can be woven using a fiber printer and a loom of a 3D printer. Composite Fabrics Mixed with Smart Composite Fibers 3D printers making woven fibers can include a fiber feeder and a loom for textile weaving. Illustratively, the fiber supply device may be a fiber supply device in the form of a bundle. The carbon fiber layer 100 may be woven in the form of a fabric through a loom by receiving the carbon fiber as a single fiber through the fiber feeding device.

Referring to FIGS. 2 and 3, the lower carbon fiber layer 100 includes a plurality of first lower fiber members extending in a first direction, and a plurality of first lower fiber members extending in a first direction and spaced apart from each other in a second direction orthogonal to the first direction. And a plurality of third lower fiber members 130 extending in the first direction may be disposed at intervals in the second direction and may include a plurality of first lower fiber members 110 ₁ &_lt; / _RTI > portion of the _first lower weave portion. The first lower weave may include a plurality of first lower fiber members 110 and the third lower weave may include a plurality of third lower fiber members 130. Referring to FIG. 3, the spacing S ₁ between the plurality of first lower fibrous members 110 may be equal to or greater than the width of the third lower fibrous member 130. Here, the spacing S ₁ between the plurality of first lower fibrous members 110 may be a distance between the widthwise ends of the first lower fibrous members 110. Distance between the plurality of the first lower fiber member 110 (S ₁₎ is a third lower fiber member 130, between the third lower fabric because the width more than the member 130, a plurality of the first lower fiber member 110 And the first and second lower fiber members 110 and 130 may be alternately arranged in the first direction. Illustratively, the width direction end of the third lower fibrous member 130 is in contact with the widthwise end of the adjacent first lower fibrous member 110, so that the first and second lower fibrous members 110 and 130 Can be closely arranged. Further, the distance between the first lower fiber member 110 (S _1), the third width is larger than the lower fiber member 130, a third lower fabric member adjacent to the first lower fiber member 110 (130 ) May be formed.

Referring to FIGS. 2 and 3, the lower carbon fiber layer 100 includes a second lower weave portion 120 having a plurality of second lower fiber members 120 extending in a second direction and spaced apart in a first direction The lower carbon fiber layer 100 includes a plurality of fourth lower fiber members 140 spaced apart in the first direction and a plurality of second lower fiber members 120 extending in the second direction, And a fourth lower weave portion disposed at an interval (S ₂ ) between the _first lower weave portion and the second lower weave portion. The second lower weave portion may include a plurality of second lower fiber member members 120 and the fourth lower weave portion may include a plurality of fourth lower member fibers 140. Referring to FIG. 3, the interval S ₂ between the plurality of second lower fiber members 120 may be equal to or greater than the width of the fourth lower fiber member 140. Here, the spacing S ₂ between the plurality of second lower fiber members 120 may be a distance between the widthwise ends of the second lower fiber member 120. Distance between the plurality of the second lower fiber member 120 (S ₂₎ is 4, so the width or more of the lower fiber member 140, the fourth lower fiber member 140 between a plurality of the second lower fiber member 120 And the second lower fiber member 120 and the fourth lower fiber member 140 may be alternately arranged in the second direction. Illustratively, the width direction end of the fourth lower fibrous member 140 is in contact with the width direction end of the adjacent second lower fibrous member 120, and the second and fourth lower fibrous members 120 and 140 Can be closely arranged. Further, the distance between the second lower fiber member 120 (S _2), the fourth width is larger than the lower fiber member 140, a fourth lower fiber member 2 adjacent the lower fiber member 120 (140 ) May be formed.

The first lower weave portion to the fourth lower weave portion may have a weave structure. Weaving is the work of making weave by crossing weft yarn of vertical yarn and weft yarn of cross yarn at right angle. Illustratively, the lower carbon fiber layer 100 includes a first lower fiber member 110 and a third lower fiber member 130 corresponding to the warp yarns, a second lower fiber member 120 and a fourth lower fiber member 130, The members 140 may be crossed at right angles to form a weave structure as shown in Fig. However, the present invention is not limited thereto. The second lower fiber member 120 and the fourth lower fiber member 140 correspond to the warp yarns, and the first and third lower fiber members 110, .

2 and 3, the weave structure is configured such that the second lower fiber member 120 traverses the lower side of the first lower fiber member 110 and crosses the upper side of the third lower fiber member 130 Lt; / RTI > The second lower fibrous member 120 may be disposed so as to alternate between the lower side of the first lower fibrous member 110 and the upper side of the third lower fibrous member 130 to form a woven structure as shown in Fig. .

In addition, the fourth lower fibrous member 140 may be arranged to cross the lower side of the third lower fibrous member 130 and to cross the upper side of the first lower fibrous member 110. The fourth lower fibrous member 140 may be disposed so as to alternate between the upper side of the first lower fibrous member 110 and the lower side of the third lower fibrous member 130 to form a woven structure as shown in Fig. . However, the present invention is not limited thereto, and it may be a structure in which the second lower fiber member 120 is disposed to cross the upper side of the first lower fiber member 110 and to cross the lower side of the third lower fiber member 130, The fourth lower fibrous member 140 may be arranged to cross the upper side of the third lower fibrous member 130 and to cross the lower side of the first lower fibrous member 110.

Referring to FIG. 1, a method for fabricating a composite woven fiber in which a smart composite fiber is mixed using a 3D printer includes forming a smart composite fiber 200 (S200).

4 is a cross-sectional view of a composite woven fabric in which a smart composite fiber is mixed according to one embodiment of the present application. Referring to FIG. 4, the smart composite fiber 200 can stack the lower polymer layer 210 on the lower carbon fiber layer 100 using a polymer spraying device of a 3D printer. In other words, the lower polymer layer 210 may be laminated on the first to fourth lower fiber members 110, 120, 130, and 140.

The 3D printer for producing the composite woven fiber in which the smart composite fiber 200 is mixed may include a polymer injection device for producing the composite conjugate fiber 200, The polymer is injected onto the first to fourth lower fibrous members 110, 120, 130 and 140 according to the arrangement of the smart composite fibers 200 by using the polymer jetting apparatus of the 3D printer to form the lower polymer layer 210 Can be stacked.

The weave structure of the lower carbon fiber layer 100 may be a structure in which a hole 150 is formed between a plurality of carbon fiber members. Referring to FIG. 3, the first to fourth lower fiber members 110, 120, 130, and 140 form a weave structure of the lower carbon fiber layer 100, 140 may be formed. In step S200, the polymer injector may inject the polymer to fill the hole 150. When the polymer injector injects the polymer onto the holes 150, the polymer injector may fill the holes 150 formed in the lower carbon fiber layer 100 and stack the lower polymer layer 210.

3, the size of the hole 150 may be set to a size such that the polymer forming the lower polymer layer 100 does not escape through the hole 150 when the polymer is injected onto the hole 150 have. When the size of the hole 150 is equal to or greater than a predetermined size and the polymer is injected onto the hole 150, the hole 150 can not be filled and the hole 150 is left through the hole 150, (100) can not be formed. Accordingly, it may be desirable that the size of the hole 150 is set to a size such that the polymer can fill the hole 150 before the polymer is cured. Illustratively, the size of the hole 150 is determined by the distance between the first and second lower fiber members 110 and 130 and the distance between the adjacent second and third lower fiber members 120 and 130, (140).

Referring to FIG. 4, the graphene layer 220 may be formed on the lower polymer layer 210. In other words, the graphene layer 220 can be formed on the lower polymer layer 210 by using the graphene particle discharging device of the 3D printer. The 3D printer that manufactures composite woven fibers in which the smart composite fibers 200 are mixed may include a graphene particle ejection device. The graphene particles discharged from the graphene particle discharging device can be attached onto the lower polymer layer 210 to form the graphene layer 220. [

In step S200, the graphene particle discharging device of the 3D printer can supply graphene particles from the blackening rod and discharge the graphene particles. Illustratively, the graphene particle discharging apparatus can obtain graphene grains through a pencil lead-shaped black rods. Graphene grains can be extracted through graphite which is used as a pencil lead. It can be easily obtained from graphite used as a pencil lead by using transparent tape or the like.

In step S200, the graphene layer 220 may be laminated on the lower polymer layer 210 before the lower polymer layer 210 is cured so as to be fused to the lower polymer layer 210.

The graphene layer 220 may be attached in powder form to the lower polymer layer 210 along the path through which the lower polymer layer 210 is sprayed in an uncured state before the lower polymer layer 210 is spontaneously cured. A graphene layer 220 is attached to the lower polymer layer 210 and the lower polymer layer 210 is naturally cured to allow the graphene layer 220 to be fused to the lower polymer layer 210. In other words, by attaching graphene particles in the form of powder along the injected path, the polymer can be cured and the graphene particles can be fused to the polymer. Since graphene grains can be obtained from a black rope such as a pencil lead, it is possible to easily produce a composite fiber having electrical conductivity by fusing the graphene grains with a polymer using a black rods attached to a 3D printer without a separate process or apparatus for producing graphene grains. .

Referring to FIG. 4, the upper polymer layer 230 may be laminated on the graphene layer 220 to cover the graphene layer 220. In other words, the upper polymer layer 230 may be formed by spraying a polymer onto the graphene layer 220 using a polymer injection device. The upper polymer layer 230 may be laminated by spraying the polymer so as to cover the graphene layer 220 using the polymer spraying apparatus of the 3D printer.

The upper polymer layer 220 may be preferably formed such that the lower polymer layer 210 is cured such that the graphene layer 220 is fused to the lower polymer layer 210 and then laminated on the graphene layer 220. However, The upper polymer layer 230 may be laminated on the graphene layer 220 before the lower polymer layer 210 is cured so as to be fused to the lower polymer layer 210 and the graphene layer 220 . The upper polymer layer 220 may be deposited on the graphene layer 220 in an uncured state of the lower polymer layer 210 before the graphene grains are fused to the lower polymer layer 210. The lower polymer layer 210 and the upper polymer layer 230 are then cured by UV or hot air so that the graphene layer 220 can be fused to the lower polymer layer 210 and the upper polymer layer 230, It can be fused to liver.

The smart composite fiber 200 is formed by sequentially laminating a lower polymer layer 210, a graphene layer 220 and an upper polymer layer 230 on the lower carbon fiber layer 100 after the lower carbon fiber layer 100 is woven . In other words, the graphene conjugate fibers that are the smart composite fibers 200 can be sequentially arranged on the lower carbon fiber layer 100 having been woven. The smart composite fiber 200 can be formed into a three-dimensional structure by stacking a lower polymer layer 210, a graphene layer 220, and an upper polymer layer 230, which are thin two-dimensional planes, using a 3D printer. The composite fiber (200) is a composite fiber obtained by adding graphene to a polymer core. The smart composite fiber 200 including the graphene layer may have electrical conductivity. By monitoring the resistance and capacitance change data of the smart fiber by deforming and damaging the composite material by external load, it is possible to detect the damage of the composite material.

The smart composite fibers 200 may be formed to have a lattice-like pattern. The smart composite fibers 200 can be stacked on the lower carbon fiber layer 100 and the first and second lower and upper fiber members 110 and 130 and the second lower fiber member 120 can be stacked, And the fourth lower fibrous member 140, as shown in FIG. However, the present invention is not limited thereto, and the pattern shape of the smart composite fiber 200 can be set to an interval or a pattern which is considered to be suitable for stability and damage detection of the structure, independently of the pattern form of the weave structure. Accordingly, the lower polymer layer 210 may spray the polymer according to the shape of the set pattern to laminate the lower polymer layer 210, and then the graphene layer 220 and the upper polymer layer 230 may be sequentially stacked on the lower polymer layer 210 . Accordingly, the smart fiber 200 can have a uniform spacing and specific pattern between the fibers to improve the damage detection capability of the composite structure.

Referring to FIG. 1, a method of fabricating a composite woven fabric in which a smart composite fiber is mixed using a 3D printer includes a step (S300) of weaving an upper carbon fiber layer 300.

The upper carbon fiber layer 300 may be woven on the smart composite fiber 200 using a fiber feeder and a loom. Illustratively, the fiber supply device may be a fiber supply device in the form of a bundle. The upper carbon fiber layer 300 may be woven in the form of a fabric through a loom, receiving the carbon fibers as a single fiber through the fiber feeder.

5 is a top view of an upper carbon fiber layer according to one embodiment of the present application.

2 and 5, the upper carbon fiber layer 300 includes a plurality of first upper fiber members extending in a first direction, and a plurality of first upper fiber members 300 extending in a second direction perpendicular to the first direction, And a plurality of third upper fibrous members 330 extending in the first direction may be disposed at intervals in the second direction, and the plurality of third upper fibrous members 330 may be spaced apart from each other by a distance S ₃ < / RTI > portion of the first upper weave portion. The first upper woven portion may include a plurality of first upper fibrous members 310 and the third upper woven portion may include a plurality of third upper fibrous members 330. 5, the interval S ₃ between the plurality of first upper fibrous members 310 may be equal to or greater than the width of the third upper fibrous member 330. Here, the interval S ₃ between the plurality of first upper fibrous members 310 may be the interval between the widthwise ends of the first upper fibrous members 310. Since the interval S ₃ between the plurality of first upper fibrous members 310 is equal to or greater than the width of the third upper fibrous member 330, the third upper fibrous member 330 is sandwiched between the plurality of first upper fibrous members 310, And the first upper fibrous member 310 and the third upper fibrous member 330 may be alternately arranged in the first direction. Illustratively, the widthwise end of the third upper fibrous member 330 abuts the widthwise end of the adjacent first upper fibrous member 310, so that the distance between the first upper fibrous member 310 and the third upper fibrous member 330 Can be closely arranged. The distance S ₃ between the first upper fibrous members 310 is set larger than the width of the third upper fibrous member 330 so that the thickness of the third upper fibrous member 330 adjacent to the first upper fibrous member 310 ) May be formed.

2 and 5, the upper carbon fiber layer 300 includes a second upper weave portion in which a plurality of second upper fibrous members 320 extending in a second direction are spaced apart in a first direction The upper carbon fiber layer 300 may include a plurality of fourth upper fibrous members 340 extending in the second direction and spaced apart in the first direction and a plurality of second upper fibrous members 320, And a fourth upper weave portion disposed at an interval (S ₄ ) between the first upper weave portion and the second upper weave portion. The second upper woven portion may include a plurality of second upper fibrous members 320 and the fourth upper woven portion may include a plurality of fourth upper fibrous members 340. The spacing S ₄ between the plurality of second top fibrous members 320 may be greater than or equal to the width of the fourth top fibrous member 340. Here, the interval S ₄ between the plurality of second top fibrous members 320 may be a distance between the widthwise ends of the second top fibrous members 320. The gap S ₄ between the plurality of second upper fibrous members 320 is equal to or greater than the width of the fourth upper fibrous member 340 so that the fourth upper fibrous member 340 is sandwiched between the plurality of second upper fibrous members 320, And the second upper fibrous member 320 and the fourth upper fibrous member 340 may be alternately arranged in the first direction. Illustratively, the widthwise end of the fourth upper fibrous member 340 abuts the widthwise end of the neighboring second upper fibrous member 320, so that the second upper fibrous member 320 and the fourth upper fibrous member 340 Can be closely arranged. In addition, the second gap between the upper fiber member 320 (S _4), the fourth the fourth upper fiber member which is larger than the width of the upper fiber member 340 adjacent to the second upper fibrous member 320 (340 ) May be formed.

The first upper weave portion to the fourth upper weave portion may have a woven structure. Illustratively, the upper carbon fiber layer 300 includes a first upper fibrous member 310 and a third upper fibrous member 330 corresponding to the warp yarns, a second upper fibrous member 320 corresponding to the weft yarn, The members 340 may cross at right angles to achieve a weave structure as shown in Fig. The second upper fibrous member 320 and the fourth upper fibrous member 340 correspond to the warp yarns and the first upper fibrous member 310 and the third upper fibrous member 320 correspond to the warp yarns, .

2 and 5, the woven structure is arranged such that the second upper fibrous member 320 traverses the lower side of the first upper fibrous member 310 and traverses the upper side of the third upper fibrous member 330 Lt; / RTI > The second upper fibrous member 320 may be disposed so as to alternate between the lower side of the first upper fibrous member 310 and the upper side of the third upper fibrous member 330 to form a woven structure as shown in Fig. .

Further, the fourth upper fibrous member 340 may be arranged to cross the lower side of the third upper fibrous member 330 and to cross the upper side of the first upper fibrous member 310. The fourth upper fibrous member 340 may be arranged so as to alternate between the upper side of the first upper fibrous member 310 and the lower side of the third upper fibrous member 330 to form a woven structure as shown in Fig. . The second upper fibrous member 320 may be arranged to cross the upper side of the first upper fibrous member 310 and to cross the upper side of the third upper fibrous member 330, The fourth upper fibrous member 340 may be disposed so as to cross the upper side of the third upper fibrous member 330 and to cross the lower side of the first upper fibrous member 310.

The plurality of first to fourth upper fibrous members 310, 320, 330, and 340 may be woven on the smart composite fiber 200 corresponding to the pattern shape of the smart composite fiber 200. The first to fourth upper fibrous members 310, 320, 330, and 340 are stacked on the lower carbon fiber layer 100 such that the smart composite fibers 200 ). ≪ / RTI > In addition, when the smart composite fibers 200 are stacked so as to pass between the first and second lower fiber members 110 and 120 and between the third and fourth lower fiber members 130 and 140 The upper composite fiber 200 is disposed between the first upper fibrous member 310 and the third upper fibrous member 330 and between the second upper fibrous member 320 and the fourth upper fibrous member 340, The fibrous layer 300 may be laminated. However, the present invention is not limited thereto, and the upper carbon fiber layer 300 may be laminated corresponding to the pattern shape of the smart composite fiber 200.

According to the method of manufacturing the composite weave fiber in which the smart composite fiber is mixed with the 3D printer, when the lower carbon fiber layer 100 is woven, the lower polymer layer 210, which is a graphene composite fiber, is formed on the lower carbon fiber layer 100, A graphene layer 220 and an upper polymer layer 220 are successively arranged on the upper carbon fiber layer 300. The upper carbon fiber layer 300 is woven in the form of a fabric using carbon fibers on the upper polymer layer 220 to produce a three dimensional composite material. In other words, when the carbon fiber is woven in the form of a fabric, the smart fiber can be woven on the upper part, the carbon fiber can be woven thereon, and the smart composite fiber having electrical conductivity It is possible to produce an integrated woven composite material by inserting it into a composite material. Referring to FIG. 2, the smart fibers 200 may be inserted between a carbon fiber composite material layer (a lower carbon fiber layer 100 and an upper carbon fiber layer 200).

In order to apply Smart Fibers to composite materials, it is necessary to weave carbon fibers through a 3D printer, and at the same time to form smart fibers . It is possible to combine a fiber loom with a 3D printer to vary the complex fiber insertion pattern, and by inserting and integrating the fiber for damage detection at the same time as the fiber composite weaving, there is an advantage that the damage detection range of the fiber composite can be widened.

Hereinafter, a composite woven fiber (hereinafter, referred to as 'composite woven fiber in which the present smart composite fibers are mixed') mixed with a smart composite fiber according to one embodiment of the present invention will be described. However, the composite weave fiber 1 in which the present smart composite fiber is mixed is a composite weave fiber that can be produced by the method of producing the composite weave fiber in which the smart composite fiber is mixed using the 3D printer described above. The same or corresponding technical features and configurations as those of the composite woven fiber fabrics mixed with the used smart composite fibers are shared. Therefore, a description overlapping with the description of the method of manufacturing the composite woven fiber in which the smart composite fiber using the 3D printer is mixed will be simplified or omitted, and the same reference numerals will be used for the same or similar components.

Referring to FIG. 2, the composite woven fiber 1 in which the present smart composite fiber is mixed may include a lower carbon fiber layer 100 having a plurality of carbon fiber members in a woven form.

2 and 3, the lower carbon fiber layer 100 includes a plurality of first lower fiber members 110 extending in a first direction and spaced apart from each other in a second direction orthogonal to the first direction A first lower weave portion, a plurality of second lower fiber materials 120 extending in a second direction are arranged in a spaced relation in the first direction, a plurality of third lower weave portions extending in the first direction, A third lower weave portion disposed at a space S ₁ between the plurality of first lower fiber members 110 and a second lower weave portion 130 disposed in a second direction spaced apart in the second direction, A plurality of fourth lower web members 140 arranged in a spaced relation in the first direction and including a fourth lower web weaving portion disposed at a space S ₂ between the plurality of second lower web members 120 , And the first lower weave portion to the fourth lower weave portion may have a woven structure. The woven structure is such that the second lower fiber member 120 is disposed to cross the lower side of the first lower fiber member 110 and cross the upper side of the third lower fiber member 130, May be disposed so as to cross the lower side of the third lower fiber member 130 and to cross the upper side of the first lower fiber member. The weaving structure of the first lower fibrous member 110, the second lower fibrous member 120, the third lower fibrous member 130, and the fourth lower fibrous member 140 is not limited to the above- Therefore, a more detailed description will be omitted.

Referring to FIG. 3, the spacing S ₁ between the plurality of first lower fibrous members 110 may be equal to or greater than the width of the third lower fibrous member 130. Distance between the plurality of the first lower fiber member 110 (S ₁₎ is a third lower fiber member 130, between the third lower fabric because the width more than the member 130, a plurality of the first lower fiber member 110 And the first and second lower fiber members 110 and 130 may be alternately arranged in the first direction. Referring to FIG. 3, the interval S ₂ between the plurality of second lower fiber members 120 may be equal to or greater than the width of the fourth lower fiber member 140. Distance between the plurality of the second lower fiber member 120 (S ₂₎ is 4, so the width or more of the lower fiber member 140, the fourth lower fiber member 140 between a plurality of the second lower fiber member 120 And the second lower fiber member 120 and the fourth lower fiber member 140 may be alternately arranged in the second direction.

Referring to FIG. 2, the composite woven fiber 1 in which the present smart composite fibers are mixed is formed of a lower polymer layer 210 formed on the lower carbon fiber layer 100, a lower polymer layer 210 formed on the lower polymer layer 210, A smart composite fiber 200 comprising a pinned layer 220 and an upper polymer layer 230 formed on the graphene layer 220.

The lower polymer layer 210 may be laminated on the first to fourth lower fiber members 110, 120, 130, and 140. The lower polymer layer 210 may be laminated by spraying the polymer on the first to fourth lower fiber members 110, 120, 130, and 140 according to the arrangement shape of the smart composite fibers 200.

The weave structure of the lower carbon fiber layer 100 has a structure in which holes are formed between the plurality of carbon fiber members and the size of the holes 150 is such that the polymer forming the lower polymer layer 100 is formed on the holes 150 And may be set to a size that does not escape through the hole 150 when sprayed. When the size of the hole 150 is equal to or greater than a predetermined size and the polymer is injected onto the hole 150, the hole 150 can not be filled and the hole 150 is left through the hole 150, (100) can not be formed. Accordingly, it may be desirable that the size of the hole 150 is set to a size such that the polymer can fill the hole 150 before the polymer is cured. The weave structure of the upper carbon fiber layer 100 to be described later may also be the same or similar to that of the lower carbon fiber layer 100 described above.

Referring to FIG. 4, the graphene layer 220 may be laminated on the lower polymer layer 210. A graphene layer 220 is attached to the lower polymer layer 210 and the lower polymer layer 210 is naturally cured to allow the graphene layer 220 to be fused to the lower polymer layer 210.

Referring to FIG. 4, the upper polymer layer 230 may be laminated on the graphene layer 220 to cover the graphene layer 220.

The graphene layer 220 may be connected to the lower polymer layer 210 and the upper polymer layer 220 by fusing. The upper polymer layer 220 may be preferably formed such that the lower polymer layer 210 is cured such that the graphene layer 220 is fused to the lower polymer layer 210 and then laminated on the graphene layer 220. However, The upper polymer layer 220 may be laminated on the graphene layer 220 in an uncured state of the lower polymer layer 210 before the graphene grains are fused to the lower polymer layer 210.

The smart composite fibers 200 may be formed to have a lattice-like pattern. The smart composite fibers 200 can be stacked on the lower carbon fiber layer 100 and the first and second lower and upper fiber members 110 and 130 and the second lower fiber member 120 can be stacked, And the fourth lower fibrous member 140, as shown in FIG. However, the present invention is not limited thereto, and the pattern shape of the smart composite fiber 200 can be set to an interval or a pattern which is considered to be suitable for stability and damage detection of the structure, independently of the pattern form of the weave structure. Accordingly, the lower polymer layer 210 may spray the polymer according to the shape of the set pattern to laminate the lower polymer layer 210, and then the graphene layer 220 and the upper polymer layer 230 may be sequentially stacked on the lower polymer layer 210 . Since the smart composite fiber 200 has been described above, a more detailed description will be omitted.

Referring to FIG. 2, the composite woven fabric 1 in which the present smart composite fibers are mixed includes a top carbon fiber layer 300 having a plurality of carbon fiber members woven and formed on the smart composite fibers 200, . ≪ / RTI >

2 and 5, the upper carbon fiber layer 300 includes a plurality of first upper fiber members 310 extending in a first direction and spaced apart from each other in a second direction orthogonal to the first direction A second upper weave portion having a first upper weave portion, a plurality of second upper fiber members 320 extending in a second direction and spaced apart in a first direction, a plurality of third upper weave portions extending in a first direction, A third upper weave portion disposed at an interval between the plurality of first upper fibrous members 310 and a plurality of second upper weave portions 330 extending in the second direction, The fourth upper weave portion 340 is disposed at a distance in the first direction and is disposed at a spacing portion between the plurality of second upper textile members 320, The fourth upper weave portion may be a woven structure. The weave structure is such that the second upper fibrous member 320 is disposed to cross the lower side of the first upper fibrous member 310 and to cross the upper side of the third upper fibrous member 330, May be disposed so as to cross the lower side of the third upper fibrous member 330 and to cross the upper side of the first upper fibrous member 310. The weaving structure of the first upper fibrous member 310, the second upper fibrous member 320, the third upper fibrous member 330, and the fourth upper fibrous member 340 is not limited to the one described above Therefore, a more detailed description will be omitted.

5, the interval S ₃ between the plurality of first upper fibrous members 310 may be equal to or greater than the width of the third upper fibrous member 330. Since the interval S ₃ between the plurality of first upper fibrous members 310 is equal to or greater than the width of the third upper fibrous member 330, the third upper fibrous member 330 is sandwiched between the plurality of first upper fibrous members 310, And the first upper fibrous member 310 and the third upper fibrous member 330 can be alternately arranged in the first direction

5, the interval S ₄ between the plurality of second top fibrous members 320 may be equal to or greater than the width of the fourth top fibrous member 340. The gap S ₄ between the plurality of second upper fibrous members 320 is equal to or greater than the width of the fourth upper fibrous member 340 so that the fourth upper fibrous member 340 is sandwiched between the plurality of second upper fibrous members 320, And the second upper fibrous member 320 and the fourth upper fibrous member 340 may be alternately arranged in the first direction.

The plurality of first to fourth upper fibrous members 310, 320, 330, and 340 may be woven into the smart composite fibers 200 corresponding to the pattern shape of the smart composite fibers 200. Illustratively, The first to fourth upper fibrous members 310, 320, 330, and 340 may be woven on the smart composite fiber 200 when the first and second upper fibrous members 200 and 200 are stacked on the lower carbon fiber layer 100. [ The smart composite fiber 200 is passed between the first and second lower fiber members 110 and 130 and between the second and third lower and upper fiber members 120 and 140 When the smart composite fibers 200 are stacked, they are passed between the first upper fibrous member 310 and the third upper fibrous member 330 and between the second upper fibrous member 320 and the fourth upper fibrous member 340 The upper carbon fiber layer 300 may be laminated on the upper surface of the composite fiber 200. However, Correspondingly there can be stacked upper carbon fiber layer (300).

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

1: Composite textile fiber
100: Lower carbon fiber layer
110: first lower fiber member
120: second lower fiber member
130: third lower fiber member
140: fourth lower fibrous member
150: hole
200: Smart Composite Fiber
210: Lower polymer layer
220: graphene layer
230: upper polymer layer
300: upper carbon fiber layer
310: first upper fiber member
320: second upper fiber member
330: third upper fiber member
340: fourth upper fibrous member

Claims (15)

CLAIMS What is claimed is:
(a) weaving a lower carbon fiber layer using a fiber feeder and a loom of a 3D printer;
(b) stacking a lower polymer layer on the lower carbon fiber layer using the polymer jetting device of the 3D printer, forming a graphene layer on the lower polymer layer using the graphene particle discharging device of the 3D printer, Jetting a polymer onto the graphene layer using the polymer jetting apparatus to form an upper polymer layer to form a smart composite fiber; and
(c) weaving the upper carbon fiber layer on the smart composite fiber using the fiber supply device and the loom. The method according to claim 1,
Wherein in the step (b), the graphene layer is laminated on the lower polymer layer before the lower polymer layer is cured so as to be fused to the lower polymer layer. Method of making fiber. 3. The method of claim 2,
Wherein the upper polymer layer is laminated on the graphene layer before the lower polymer layer is fused to the lower polymer layer and the graphene layer in the step (b). Composite composite woven fibers. The method according to claim 1,
Wherein the lower carbon fiber layer comprises:
A first lower weave portion having a plurality of first lower fiber members extending in a first direction and spaced apart in a second direction perpendicular to the first direction;
A second lower weave portion having a plurality of second lower fiber members extending in the second direction and spaced apart in the first direction;
A third lower weave portion disposed at an interval between the plurality of first lower fibrous members and spaced apart in the second direction by a plurality of third lower fibrous members extending in the first direction; And
A plurality of fourth lower fiber members extended in the second direction are disposed at intervals in the first direction and disposed at intervals between the plurality of second lower fiber members,
Wherein the first lower weave portion to the fourth lower weave portion have a woven structure, wherein the smart composite fibers are mixed using a 3D printer. 5. The method of claim 4,
Wherein the weaving structure is arranged such that the second lower fiber material crosses the lower side of the first lower fiber member and crosses over the upper side of the third lower fiber member, Wherein the first fiber bundle is a structure that traverses the lower side of the member and is arranged to cross the upper side of the first lower fiber member. 5. The method of claim 4,
Wherein the lower polymer layer is laminated on the first to fourth lower fiber members,
Wherein the graphene layer is laminated on the lower polymer layer,
Wherein the upper polymer layer is laminated on the graphene layer so as to cover the graphene layer, wherein the smart polymer fiber is mixed with the 3D printer. The method according to claim 6,
Wherein the smart composite fiber is formed to have a lattice-like pattern, wherein the smart composite fiber is mixed with a 3D printer. The method according to claim 1,
Wherein the upper carbon fiber layer comprises:
A first upper weave portion having a plurality of first upper fiber members extending in a first direction and spaced apart in a second direction perpendicular to the first direction;
A second upper weave portion in which a plurality of second upper fiber members extending in the second direction are disposed with an interval in the first direction;
A third upper weave portion disposed at an interval between the plurality of first upper fibrous members and spaced apart in the second direction from the plurality of third upper fibrous members extending in the first direction; And
A plurality of fourth upper fiber members extended in the second direction are disposed at intervals in the first direction and disposed at intervals between the plurality of second upper fiber members,
Wherein the first upper weave portion to the fourth upper weave portion have a woven structure. 9. The method of claim 8,
Wherein the weaving structure is arranged such that the second upper fibrous member traverses the lower side of the first upper fibrous member and traverses the upper side of the third upper fibrous member, Wherein the first and second upper fibrous members are arranged such that they cross the lower side of the member and are arranged to cross the upper side of the first upper fibrous member. The method according to claim 1,
Wherein the graphene particle discharging device of the 3D printer receives graphene grains from a blackening rod and discharges the graphene grains from the graphene grapple in the step (b). The method according to claim 1,
The weave structure of the lower carbon fiber layer has a structure in which holes are formed between a plurality of carbon fiber members,
In the step (b), the polymer injector injects the polymer to fill the hole,
Wherein the size of the hole is set such that the polymer forming the lower polymer layer does not escape through the hole when the polymer is sprayed onto the hole. . delete delete delete delete

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