KR100628032B1 - Fiber reinforced plastic and method for producing thereof - Google Patents

Abstract

Disclosed are fiber reinforced plastics and methods of making the same. The fiber-reinforced plastic of the present invention is characterized in that it comprises a fiber mat formed by weaving a plurality of strands of fiber wires formed by flocking fiber yarns; and a synthetic resin that is mixed with the fiber mat and cured to a predetermined shape. According to the present invention, it is possible to easily invade the synthetic resin to increase the bonding strength of the fiber mat and the synthetic resin, it is possible to increase the thickness of the fiber-reinforced plastics more easily than before, thereby improving the productivity than the conventional.

Fiber reinforced plastic, FRP, fiberglass, woven reinforcement

Description

Fiber reinforced plastic and method for producing thereof

1 is a broken perspective view showing the configuration of a fiber-reinforced plastic according to a conventional embodiment.

Figure 2 is a perspective view showing the configuration of a fiber-reinforced plastic according to the first embodiment of the present invention.

3 is a perspective view showing the configuration of a fiber mat provided in the fiber reinforced plastic of FIG.

4 is a schematic diagram schematically showing the fiber mat of FIG.

5 is a flow chart sequentially showing a method of manufacturing a fiber-reinforced plastic according to the first embodiment of the present invention.

6 is a schematic diagram schematically showing a fiber mat provided in the fiber reinforced plastic according to the second embodiment of the present invention.

7 is a transparent perspective view showing the configuration of the fiber-reinforced plastics according to the third embodiment of the present invention.

FIG. 8 is a perspective view illustrating a configuration of a fiber mat provided in the fiber reinforced plastic of FIG. 7.

9 is a flowchart sequentially showing a method of manufacturing a fiber-reinforced plastic according to a third embodiment of the present invention.

10 is a plan view of a fiber reinforced plastic according to a fourth embodiment of the present invention.

FIG. 11 is a schematic diagram schematically showing the configuration of FIG. 10.

12 is a schematic diagram schematically showing the configuration of the fiber mat of FIG.

13 is a flowchart sequentially illustrating a method of manufacturing a fiber-reinforced plastic according to a fourth embodiment of the present invention.

      Explanation of symbols on the main parts of the drawings

110: fiber wire 111: fiber yarn

120: fiber mat 121: weaver

130: synthetic resin 210: fiber wire

220: fiber mat 310: fiber wire

311: fiber yarn 320: fiber mat

330: woven reinforcement 340: synthetic resin

410: fiber wire 411: fiber yarn

420: fiber mat 421: weaver

430: woven reinforcement

The present invention relates to a fiber-reinforced plastic and a method of manufacturing the same, and more particularly, to facilitate the invasion of the synthetic resin to increase the bonding strength of the fiber mat and the synthetic resin, it is easier than the conventional to increase the thickness of the fiber reinforced plastic The present invention relates to a fiber-reinforced plastic and a method of manufacturing the same, which can increase productivity accordingly.

Fiber Reinforced Plastic combines synthetic resin and fiber reinforcement to keep the advantages such as plastic's corrosion resistance and ease of molding, while maintaining the advantages of tensile strength, impact resistance and heat resistance due to the added fiber reinforcement. It is a composite material that can be obtained additionally.

Such fiber-reinforced plastics are used in various fields such as hulls, bathtubs, septic tanks, helmets, etc. of small vessels because of their low cost and light weight, and the technical fields used are gradually increasing.

Hereinafter, a fiber reinforced plastic according to the prior art with reference to the accompanying drawings as follows.

1 is a broken perspective view showing the configuration of a fiber-reinforced plastic according to a conventional embodiment, as shown in this, the fiber-reinforced plastic (1) according to a conventional embodiment of the fiber yarn 11 is random It is provided with the fiber mat 10 which is arrange | positioned by dispersion | distribution, and the synthetic resin 20 hardened | cured so that it may be combined with the fiber mat 10 and maintain a predetermined shape.

That is, the fiber-reinforced plastic 1 according to one embodiment of the present invention, the synthetic resin 11 is compounded and cured on the inside, the upper and lower surfaces of the fiber mat 10 in which the fiber yarn 11 is arranged dispersed, the overall It will have a configuration in which the fiber yarn 11 is dispersed in the fiber reinforced plastic (1).

However, the fiber-reinforced plastic 1 according to the prior art embodiment, in order to mold to a predetermined shape, such as a septic tank, the thickness (t) should be increased, and for this purpose, the fiber mat in which the fiber yarns 11 are dispersed and disposed. The thickness of (10) should be increased, since a large amount of fiber yarns (11) are randomly distributed and arranged, the synthetic resin (20) is a fiber mat (10) when a thick fiber mat (10) is used for productivity. ) Is not sufficiently invaded inside the weakness of the bonding strength of the synthetic resin 20 and the fiber mat 10 is weak, in order to prevent the thin fiber mat 10 to be laminated to a predetermined shape while forming a predetermined shape problem that productivity is reduced There was this.

In order to solve this problem, there have been efforts to increase the thickness t of the fiber-reinforced plastic 1 by increasing the amount of the synthetic resin 20 instead of increasing the thickness of the fiber mat 10. Since the amount of the synthetic resin 20 is greatly increased, waste of cost occurs, and the amount of the fiber yarn 11 is insufficient compared to the amount of the synthetic resin 20, so that the function as the fiber-reinforced plastic 1 is not sufficiently exhibited. Had a problem.

Accordingly, an object of the present invention is to facilitate the invasion of the synthetic resin to increase the bonding strength of the fiber mat and the synthetic resin, thereby increasing the thickness of the fiber-reinforced plastic more easily than before, thereby improving the productivity than conventional It is to provide a fiber-reinforced plastic and a method of manufacturing the same.

In addition, another object of the present invention, while reducing the amount of synthetic resin and increase the bonding strength of the fiber mat and the synthetic resin, it is possible to increase the thickness of the fiber-reinforced plastic more easily, and also if necessary, mechanical, chemical and thermal properties It is to provide a fiber-reinforced plastic and a method of manufacturing the same that can improve the.

The above object, according to the present invention, the fiber mat is provided by weaving a plurality of strands of fiber wire formed by agglomeration of fiber yarns; And it is achieved by a fiber-reinforced plastic, characterized in that it comprises a synthetic resin composite with the fiber mat and cured to a predetermined shape.

Here, the fiber mat may further include a plurality of woven reinforcement that is surrounded by the plurality of strands of fiber wires when weaving the plurality of strands of fiber wires.

In this case, it is preferable that the said fiber mat is provided by weaving a plurality of strands of fiber wire by knitting.

The fiber mat may be provided by weaving a plurality of strands of fiber wires having different diameters, and in particular, the fiber mat preferably includes vertical fiber wires and horizontal fiber wires having different diameters.

The plurality of woven reinforcement is preferably disposed substantially parallel to the fiber mat spaced apart from each other by a predetermined distance, and may be at least one of woven fiber reinforcement, polypropylene, polyethylene, urethane and expanded polystyrene formed by agglomeration of fiber yarn.

The fiber yarn may be any one of glass fiber, carbon fiber and kevlar.

In addition, at least one of the woven reinforcing material and the fiber wire is preferably made of glass fiber.

In addition, the synthetic resin is a thermosetting resin, it may be invaded even in the weave formed through the fiber mat.

Meanwhile, an object of the present invention is to form a fiber mat by weaving a plurality of strands of fiber wire formed by agglomeration of fiber yarns; And it is also achieved by a method for producing a fiber-reinforced plastic, characterized in that it comprises a step of curing a synthetic shape by combining a synthetic resin on a fiber mat.

The fiber mat further includes a plurality of woven reinforcements that are surrounded by the plurality of strands of fiber wires when weaving the plurality of strands of fiber wires, and the forming of the fiber mat includes: It may be a step.

In the forming of the fiber mat, it is preferable that a plurality of strands of fiber wire are woven into knitting.

In the forming of the fiber mat, a plurality of strands of fiber wires having different diameters may be woven, and it is particularly preferable to include vertical fiber wires and horizontal fiber wires having different diameters.

And, the curing step, it is preferable to cure by any one of the curing agent of hexamethylenetetramine, amines and polyamide.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements. However, in the following description of the present invention, a description of a known function or configuration will be omitted to clarify the gist of the present invention.

2 is a perspective view showing the configuration of the fiber-reinforced plastic according to the first embodiment of the present invention, Figure 3 is a perspective view showing the configuration of a fiber mat provided in the fiber-reinforced plastic of Figure 2, Figure 4 is FIG. It is a schematic diagram which shows the fiber mat of the schematic.

As shown in the drawing, the fiber reinforced plastic 100 according to the first embodiment of the present invention includes a fiber mat 120 formed by weaving a plurality of strands of fiber wires 110 formed by agglomeration of the fiber yarns 111. And a synthetic resin 130 which is complexed with the fiber mat 120 and cured to a predetermined shape.

Here, the fiber yarn 111 is preferably using an aromatic nylon fiber, such as glass fiber, carbon fiber and Kevlar, in particular, when using a glass fiber having a diameter of 0.1 mm or less as the fiber yarn 111, While the heat resistance, tensile strength, impact resistance and corrosion resistance of the fiber reinforced plastic 100 may be improved, the weight may have a light advantage.

As shown in FIG. 3, the fiber wire 110 is formed by gathering a plurality of fiber yarns 111. In particular, it is possible to prevent the plurality of fiber yarns 111 from being separated from each other by gathering the plurality of fiber yarns 111 and twisting them in a predetermined direction. The fiber wire 110 may have a predetermined thickness by itself since the plurality of fiber yarns 111 are formed by agglomeration, and the thickness of the fiber wire 110 is appropriately adjusted by adjusting the amount of the fiber yarns 111 to be aggregated. Easy to adjust

As shown in FIGS. 3 and 4, the fiber mat 120 is provided by weaving a plurality of strands of fiber wire 110. In FIGS. 3 and 4, the plurality of strands of the fiber wire 110 are illustrated as being woven in plain weave, but the scope of the present invention is not limited thereto, and may be woven by a weaving method such as runner weave and twill weave. have.

Here, plain weave (plain weave) is the most basic and simple of the tissue structure, the fabric woven by plain weave has excellent toughness. Fabrics woven by satin weave have a very smooth and glossy surface, and twill weave woven fabrics are tough and shiny. Accordingly, the fiber mat 120 may be woven by a suitable weaving method such as plain weave, runner weave and twill weave as needed.

In addition, the plurality of strands of fiber wire 110 may be woven by knitting, in particular, by flat knitting. As described above, the plurality of strands of the fiber wire 110 woven by knitting will be described later (see the fourth embodiment of the present invention).

The fiber mat 120 is provided with a weave hole 121 having a predetermined size by weaving the fiber wire 110 in which the plurality of fiber yarns 111 are gathered to have a predetermined thickness. As described above, when weaving the fiber mat 120 by a weaving method such as plain weave, runner weave and twill weave, the weaving hole 121 can be easily formed. The weaver 121 serves as a passage through which the synthetic resin 130 as described below may be invaded, so that the synthetic resin 130 may be well infiltrated into the interior of the fiber mat 120, and thus, the weave may be Bonding force between the fiber mat 120 having the ball 121 and the synthetic resin 130 is increased.

The synthetic resin 130 is combined with the fiber mat 120 and cured to maintain a predetermined shape. It is preferable to use a thermosetting resin such as unsaturated polyester and epoxy resin, and the synthetic resin 130 may be molded under normal temperature and normal pressure, in particular, when unsaturated polyester is used. Physical properties such as corrosion resistance and corrosion resistance are improved.

In addition, the synthetic resin 130 is cured after being composited with the fiber mat 120, the fiber-reinforced plastic 100 serves as a matrix that can maintain a predetermined shape. Thus, by curing the synthetic resin 130 to have a predetermined shape as needed, the fiber-reinforced plastic 100 is a small ship hull, bathtub, septic tank, chemical tank, interior, container, tennis racket, helmet and aircraft gas, etc. It may have a shape suitable for various products.

In this case, the synthetic resin 130 composited with the fiber mat 120 is preferably cured by a curing agent (not shown). As the curing agent, hexamethylenetetramine, amines and polyamides may be used, and a curing accelerator such as tertiary amine may be used to promote curing.

Although FIG. 2 shows that one layer of the fiber mat 120a composited with the synthetic resin 130 and the other layer of the fiber mat 120b composited with the synthetic resin 130 are laminated, After laminating the mat 120 first, it is also possible to composite the laminated plurality of fibrous mats 120 with the synthetic resin 130 at once. As such, when the multi-layer fiber mat 120 is laminated and then composited with the synthetic resin 130, the total thickness of the fiber-reinforced plastic 100 increases while the amount of the synthetic resin 130 used is increased. There is an advantage to shrink.

Referring to the manufacturing method of the fiber-reinforced plastics 100 according to the first embodiment of the present invention configured as described above are as follows.

FIG. 5 is a flowchart sequentially illustrating a method of manufacturing the fiber-reinforced plastic according to the first embodiment of the present invention. As shown in FIG. 5, the method of manufacturing the fiber-reinforced plastic 100 according to the first embodiment of the present invention. Silver, a step (S11) of forming a plurality of fiber wires 110 by gathering a plurality of fiber yarns 111, and forming a fiber mat 120 by weaving a plurality of fiber wires 110 ( S12), stacking the plurality of fibrous mat 120 layers (S13), and combining the fibrous mat 120 and the synthetic resin 130 to harden to form a predetermined shape (S14).

In the forming of the fiber wire 110 (S11), it is preferable that the plurality of fiber yarns 111 are gathered to twist in a predetermined direction, which prevents the plurality of fiber yarns 111 from being separated from each other. To do this.

Forming the fiber mat 120 (S12), it is preferable to weave a plurality of strands of fiber wire 110 by a weaving method such as plain weave, runner weave and twill weave, but the scope of the present invention is limited thereto. If not, a plurality of strands of the fiber wire 110 is not separated from each other, as long as the weaving hole 121 can be formed on the fiber mat 120 by the weaving of the fiber wire 110, we can be woven in any way Will do.

By stacking the plurality of fiber mat 120 layers (S13), it is possible to easily increase the thickness of the fiber-reinforced plastic (100).

In the curing step (S14), the fiber mat 120 and the synthetic resin 130 is combined, and then it is preferable to cure by adding a curing agent such as hexamethylenetetramine, amines and polyamide, but the scope of the present invention is The present invention is not limited thereto, and the synthetic resin 130 complexed with the fiber mat 120 may be cured by any curing agent as long as it can be cured to maintain a predetermined shape. In addition, a method of naturally curing without adding a separate curing agent will also belong to the scope of the present invention.

The fiber mat 120 of the fiber reinforced plastic 100 according to the first embodiment of the present invention manufactured by such a method is provided by weaving a fiber wire 110 formed by a plurality of fiber yarns 111 agglomerated. Therefore, the weaving hole 121 is formed inside the fiber mat 120, and the synthetic resin 130 is easily invaded through the weaving hole 121 to form the synthetic resin 130 and the fiber mat 120. The bonding force is increased.

In addition, in order to increase the thickness of the fiber-reinforced plastic (100), since a plurality of layers of fiber mat 120 is laminated, the amount of the synthetic resin 130 is reduced to prevent unnecessary cost waste. have.

Hereinafter, with reference to the accompanying drawings will be described in detail a fiber reinforced plastic according to a second embodiment of the present invention. However, the same description as that described in the fiber reinforced plastic according to the first embodiment of the present invention will be omitted.

6 is a schematic diagram schematically showing a fiber mat provided in the fiber reinforced plastic according to the second embodiment of the present invention. As shown in the drawing, the fiber mat 220 provided in the fiber reinforced plastic according to the second embodiment of the present invention is provided by weaving a plurality of strands of fiber wires 210 having different diameters.

That is, since the diameters (or thicknesses) of the plurality of strands of the fiber wire 210 constituting the fiber mat 220 are different from each other, the thickness of the fiber mat 220 can be easily increased, and the weaving hole ( It is easy to form (not shown) to facilitate the penetration of the synthetic resin.

In particular, as shown in Fig. 6, it is preferable to have a small vertical fiber wire 210a and a large horizontal fiber wire 210b. The large diameter horizontal fiber wire 210b easily increases the thickness of the entire fiber mat 220, and the small diameter vertical fiber wire 210a is wound tightly around the outer periphery of the horizontal fiber wire 210b. It is possible to increase the bonding force between the (210a, 210b), thereby increasing the bonding force of the fiber mat 220.

Hereinafter, with reference to the accompanying drawings will be described in detail a fiber reinforced plastic according to a third embodiment of the present invention. However, the same descriptions as those described in the fiber-reinforced plastics according to the first and second embodiments of the present invention will be omitted.

7 is a transparent perspective view showing the configuration of the fiber-reinforced plastic according to the third embodiment of the present invention, Figure 8 is a perspective view showing the configuration of a fiber mat provided in the fiber-reinforced plastic of FIG.

As shown in the drawing, the fiber-reinforced plastic 300 according to the third embodiment of the present invention includes a fiber mat 320 formed by weaving a plurality of strands of the fiber wire 310 formed by agglomeration of the fiber yarns 311. A plurality of woven reinforcement 330 is enclosed by a plurality of strands of the fiber wire 310 is inserted into the fiber mat 320, and the synthetic resin 340 is mixed with the fiber mat 320 and cured to a predetermined shape It is provided.

7 and 8, although the plurality of strands of the fiber wire 310 surrounding the woven reinforcement 330 is shown as woven in a plain weave, the scope of the present invention is not limited thereto, such as runners and twill weave It may be woven by the same weaving method, and may be woven by knitting as described below, in particular, by flat knitting.

The woven reinforcement 330 is surrounded by the fiber wire 310 when weaving the fiber wire 310 in a shape such as a bar having a predetermined length, the plurality of woven reinforcement 330 is substantially parallel to each other To be placed. In FIG. 8, the cross section of the woven reinforcement 330 is illustrated in a circular shape, but the cross section of the woven reinforcement 330 may be appropriately changed to various shapes as necessary.

As such, when the plurality of woven reinforcement members 330 of a predetermined length are disposed substantially parallel, the woven reinforcement member 330 has a large mechanical strength, and thus, the fiber-reinforced plastic 300 may be formed by bending in the longitudinal direction. Fracture fracture can be prevented, and on the contrary, since the plurality of woven reinforcement members 330 are disposed to be spaced apart from each other by a predetermined distance, the fiber-reinforced plastic 300 may be rolled in a direction perpendicular to the length of the woven reinforcement member 330. . Accordingly, such mechanical properties can be properly utilized to meet the shape and mechanical requirements suitable for various products.

The woven reinforcement 330 is a woven fiber reinforcement formed by agglomeration of various materials, that is, fiber yarns (glass fiber, carbon fiber, kevlar, etc.) according to the use of the fiber reinforced plastic 300, polypropylene, polyethylene, urethane and foam At least any one of polystyrene can be used.

The woven fiber reinforcement is formed by gathering a plurality of fiber yarns, such as glass fiber, carbon fiber and kevlar, and can easily increase the thickness (or diameter) by increasing the amount of fiber yarn to be aggregated, thereby improving the fiber reinforced plastic ( 300) can easily increase the thickness, excellent heat resistance, corrosion resistance, tensile strength, electrical insulation, wear resistance, and light weight. Therefore, it is suitable to be used for products, such as a hull, a bathtub, a septic tank, a chemical tank, and an aircraft gas of a small ship.

Since the polypropylene has a heat insulating effect, it is possible to increase the thermal insulation of the fiber-reinforced plastic 300. Therefore, polypropylene is preferably used when the temperature of the contents (eg, hot water, chemicals, etc.) of the storage container made of the fiber-reinforced plastic 300 is to be maintained.

Since the said polyethylene is excellent in impact resistance, electrical insulation, and ease of processing, it is suitable to be used for products, such as a storage container and the packaging container of an electrical component.

Since the said urethane is excellent in abrasion resistance, cold resistance, and ease of processing, it is suitable to be used for products, such as a bathtub, a septic tank, and a drainage pipe, in which the freezing accident frequently occurs in winter.

Since the said expanded polystyrene is excellent in heat insulation, water resistance, and sound insulation, it is preferable to be used for the field | area of the storage container which needs to keep the temperature of the content, the ship body of a small ship, and aircraft gas.

On the other hand, at least one of the woven reinforcing material 330 and the fiber wire 310 is preferably made of glass fiber. This is because glass fiber is widely used as an industrial material in various fields because it has advantages of excellent tensile strength, corrosion resistance, insulation, abrasion resistance, and heat insulation, but is light in weight and inexpensive. More specifically, when the woven reinforcing material 330 is made of a material other than glass fiber, such as polypropylene and polyethylene, the fiber wire 310 is preferably formed by agglomerating glass fibers. When 310 is made of a material other than glass fiber such as carbon fiber or kevlar, the woven reinforcing material 330 is preferably formed by agglomerating the glass fiber. Of course, both the woven reinforcement 330 and the fiber wire 310 may be made of glass fiber.

The manufacturing method of the fiber reinforced plastic 300 according to the third embodiment of the present invention configured as described above is as follows. However, for the same parts as the description of the method for manufacturing the fiber-reinforced plastic 100 according to the first embodiment of the present invention will not be repeated description.

 9 is a flowchart sequentially showing a method of manufacturing a fiber-reinforced plastic according to a third embodiment of the present invention, as shown in the drawing, a method of manufacturing the fiber-reinforced plastic 300 according to the third embodiment of the present invention. Silver, the step of forming a plurality of fiber wires 310 by gathering a plurality of fiber yarns (311) (S31), and weaving so that the plurality of fiber wires 310 surround the woven reinforcing material 330 to the fiber mat Forming (S32), stacking a plurality of fiber mat 320 layers (S33), and curing the fiber mat 320 and the synthetic resin 340 to form a predetermined shape. (S34) is provided.

Forming the fiber mat 320 (S32), weaving a plurality of strands of the fiber wire 310 to surround the woven reinforcement 330, the weaving method of the fiber wire 310 is plain weave, runner weave, twill weave And it is preferable to weave in the knitting as described below, but the scope of the present invention is not limited to this, the plurality of strands of the fiber wire 310 is not separated from each other, the fiber wire 310 and the woven reinforcement 330 Are not separated from each other, as long as the weaving hole 321 can be formed in the fiber mat 320 by the weaving of the fiber wire 310, we may be woven in any way.

In the step of stacking the plurality of fiber mat 320 layers (S33), it is also possible to stack a plurality of layers of fiber mat 320 reinforced with woven reinforcement material 330 of different materials. As such, when the plurality of layers of the fiber mat 320 reinforced with the woven reinforcement material 330 of different materials are laminated to each other, the mechanical, chemical and thermal properties of the fiber reinforced plastic 300 may be improved. For example, when the fiber mat 320 layer reinforced with woven fiber reinforcement, the fiber mat 320 layer reinforced with polystyrene, and the fiber mat 320 layer reinforced with polyethylene are laminated together, the fiber reinforced plastic 300 ) Can have tensile strength (the advantage expressed by woven fiber reinforcement), heat insulation (the advantage expressed by foamed polystyrene), and impact resistance (the advantage expressed by polyethylene).

In the fiber mat 320 of the fiber-reinforced plastics 300 according to the third embodiment of the present invention manufactured by the above method, the fiber wire 310 formed by a plurality of fiber yarns 311 gathered is woven reinforcing material 330. Because it is woven to surround the (), weaving hole 321 is formed inside the fiber mat 320, the synthetic resin 340 is easily invaded through the weaving hole 321, synthetic resin 340 And the bonding force of the fiber mat 320 is increased.

In addition, in order to increase the thickness of the fiber-reinforced plastic 300, since the thickness (or diameter) of the woven reinforcement 330 may be increased or a plurality of layers of the fiber mat 320 may be laminated, the synthetic resin ( The amount of 340 is reduced to prevent unnecessary cost waste.

Furthermore, by stacking a plurality of layers of fiber mat 320 reinforced with woven reinforcing materials 330 of different materials, the mechanical, chemical, and thermal properties of the fiber reinforced plastic 300 may be improved.

Hereinafter, a fiber reinforced plastic according to a fourth embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, duplicate descriptions of parts identical to those of the fiber-reinforced plastics according to the first to third embodiments of the present invention will be omitted.

10 is a plan view of the fiber-reinforced plastic according to the fourth embodiment of the present invention, Figure 11 is a schematic diagram showing the configuration of Figure 10, Figure 12 schematically shows the configuration of the fiber mat of Figure 10 It is a schematic diagram.

As shown in the figure, the fiber-reinforced plastic 400 according to the fourth embodiment of the present invention, the fiber mat 420 formed by weaving a plurality of strands of the fiber wire 410 formed by agglomeration of the fiber yarn 411 ), A plurality of woven reinforcing materials 430 surrounded by a plurality of strands of fiber wire 410 and inserted into the fiber mat 420, and a synthetic resin that is combined with the fiber mat 420 and cured to a predetermined shape ( Not shown).

Here, the plurality of strands of fiber wire 410 is preferably woven in knitting, in particular, lateral knitting. Knitting (knit, knit weaving) is a weaving weft and warp is connected to the loop (loop), because the weaving machine 421 is easily formed when the fiber mat 420 is woven by knitting, the weaver Through 421, the synthetic resin may be easily invaded. Accordingly, even if the thickness of the fiber mat 420 is increased, the bonding force between the synthetic resin and the fiber mat 420 is not weakened.

Hereinafter, a manufacturing method of a fiber reinforced plastic according to a fourth embodiment of the present invention will be described with reference to the accompanying drawings. However, duplicate descriptions of parts identical to those of the method for manufacturing the fiber-reinforced plastics according to the first and third embodiments of the present invention will be omitted.

13 is a flow chart sequentially showing a method of manufacturing a fiber-reinforced plastic according to a fourth embodiment of the present invention, as shown in the manufacturing method of another fiber-reinforced plastic 400 according to the fourth embodiment of the present invention In step S41, the plurality of fiber yarns 411 are gathered to form a plurality of strands of fiber wires 410, and the plurality of strands of fiber wires 410 are woven in a knitted fabric so as to surround the woven reinforcing material 430. Forming the mat 420 (S42), laminating a plurality of layers of the fiber mat 420 (S43), the fiber mat 420 and the synthetic resin 440 is combined to cure to form a predetermined shape Step S44 is provided.

Here, in the step (S42) of forming the fiber mat 420, it is preferable that the plurality of strands of the fiber wire 410 is knitted, in particular, woven in a horizontal knitting so as to surround the woven reinforcement 430. This is because, as described above, since the weaving hole 421 is easily formed, the synthetic resin 430 can be easily invaded through the weaving hole 421, thereby reducing the thickness of the fiber mat 420. This is because the bonding strength of the synthetic resin 430 and the fiber mat 420 is not weakened even if it is increased.

Although the exemplary embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to the specific embodiments, and the scope of the present invention belongs to the scope of the claims of the present invention. It can be changed appropriately by a person with ordinary knowledge.

As described above, according to the present invention, by providing a fiber mat by weaving the fiber wire, it is easy to invade the synthetic resin to increase the bonding strength of the fiber mat and the synthetic resin, it is easier than the conventional Increasing the thickness, it is possible to improve the productivity than conventional.

In addition, according to the present invention, by providing a woven reinforcing material can reduce the amount of synthetic resin and increase the thickness of the fiber-reinforced plastic more easily while increasing the bonding strength of the fiber mat and the synthetic resin, and also if necessary, mechanical and chemical Can improve thermal properties.

Claims (16)

A fiber mat provided by weaving a plurality of strands of fiber wires formed by gathering fiber yarns; And Fiber reinforced plastics, characterized in that it comprises a synthetic resin which is complexed with the fiber mat and cured to a predetermined shape. The method of claim 1, The fiber mat, And further comprising a plurality of woven reinforcements that are surrounded by the plurality of strands of fiber wires when weaving the plurality of strands of fiber wires. The method of claim 1, The fiber mat, The fiber reinforced plastic, characterized in that the plurality of strands of the fiber wire is provided by weaving knitting. The method of claim 1, The fiber mat, Fiber-reinforced plastics, characterized in that the plurality of strands of fiber wires having different diameters are provided by weaving. The method of claim 4, wherein The plurality of strands of fiber wire, A fiber reinforced plastic comprising vertical fiber wires and horizontal fiber wires of different diameters. The method of claim 2, And the plurality of woven reinforcements are disposed substantially parallel to the fiber mat at a predetermined distance from each other. The method of claim 2, The weave reinforcement, Fiber reinforced plastics, characterized in that at least one of the woven fiber reinforcement, polypropylene, polyethylene, urethane and expanded polystyrene formed by gathering the fiber yarn. The method of claim 1, The fiber yarn, Fiber-reinforced plastic, characterized in that any one of glass fiber, carbon fiber, Kevlar. The method of claim 2, At least one of the woven reinforcement and the fiber wire is a fiber reinforced plastic, characterized in that made of glass fibers. The method of claim 1, The synthetic resin is a heat-curable resin, fiber-reinforced plastic, characterized in that invade the weaving hole penetrating through the fiber mat. Weaving a plurality of strands of fiber wire formed by agglomeration of fiber yarns to form a fiber mat; And Comprising a synthetic resin to the fiber mat comprising the step of curing to a predetermined shape. The method of claim 11, The fiber mat, Further comprising a plurality of woven reinforcements that are surrounded by the plurality of strands of fiber wires when weaving the plurality of strands of fiber wires, Forming the fiber mat, And weaving the fiber wire to surround the woven reinforcement. The method of claim 11 or 12, Forming the fiber mat, The fiber-reinforced plastic manufacturing method characterized in that the plurality of strands of the fiber wire is woven by knitting. The method of claim 11 or 12, Forming the fiber mat, The fiber-reinforced plastic manufacturing method characterized in that the plurality of strands of fiber wires of different diameters are woven. The method of claim 14, The plurality of strands of fiber wire, A method for producing fiber reinforced plastics comprising vertical fiber wires and horizontal fiber wires of different diameters. The method of claim 11 or 12, The curing step, A method for producing a fiber-reinforced plastic, characterized by curing with a curing agent of any one of hexamethylenetetramine, amines and polyamide.

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