KR102018678B1 - Composite material and method of adjusting color of the same - Google Patents

Abstract

The present invention relates to a composite material using unidirectional reinforced fiber prepreg and a color control method thereof. The composite material comprises: a thick plate formed by laminating a plurality of first prepreg layers formed by impregnating resins into the reinforced fiber; and a decoration plate provided on the thick plate and including a second prepreg layer formed by impregnating resins in the reinforced fiber having a color arranged in the one direction.

Description

Composite material and method of adjusting color of the same}

The present invention relates to a composite material and a method for manufacturing the same, and more particularly, to a composite material using a one-way reinforcing fiber prepreg and a color control method thereof.

Composite materials using reinforcing fibers are light, yet have high strength and elastic modulus, and are used as industrial materials in various fields. Composite materials using reinforcing fibers can be applied to a variety of sports, leisure, fashion electronics, etc., and technical demands are increasing in aesthetic elements as well as excellent physical properties according to the diversification of the applied products.

Conventionally, in order to impart color to the composite material, a method of adding a pigment having a color to the resin when impregnating the reinforcing fiber and the resin for prepreg production. However, in this case, the physical properties of the prepreg produced due to the presence of the pigment is lowered, there was a problem that it is difficult to implement a certain color.

In addition, conventionally, a method of impregnating a resin with a color of ordinary fiber and using it for decoration on the surface of the composite material was also considered. However, in the case of general fibers other than reinforcing fibers, there was a reduction in the properties of composite materials due to weak strength and difficulty in weaving due to weak strength.

Also, conventionally, a method of adding a separate layer having color to the composite material has been considered. However, the thickness of the produced composite material is increased to decrease the physical properties compared to the desired thickness, it was inevitable to change the design of the process to meet the desired physical properties. In addition, there is a problem in that additional processes are required to increase time, cost and the like.

SUMMARY OF THE INVENTION An object of the present invention is to provide a composite material capable of forming a composite material having a color and controlling the saturation and brightness of the composite material, and a method of controlling color thereof, in a composite material manufactured using a prepreg formed of reinforcing fibers. I would like to.

Composite material according to an embodiment is a thick plate formed by laminating a plurality of first prepreg layer formed by impregnating a resin in the reinforcing fiber; And a decoration plate provided on the thick plate and including a second prepreg layer formed by impregnating a resin in a reinforcing fiber having a color arranged in one direction.

The reinforcing fibers forming the first prepreg layer may be arranged in one direction.

The first prepreg layer may be a colorless prepreg layer, and the second prepreg layer may be a colored prepreg layer.

The reinforcing fiber may include at least one of carbon fiber, glass fiber and aramid.

The reinforcing fibers having the color may include aramid having the color.

The decoration plate may include a plurality of colored prepreg layers.

The plurality of colored prepreg layers may have the same grain direction.

The decoration plate cuts the colored prepreg layer and the colorless prepreg layer at regular intervals, so that the cut colored prepreg layer and the cut colorless prepreg layer are inclined and weft to each other at 0 ° and 90 °. It may include a colored prepreg fabric layer formed by crossing.

The decoration plate may include a plurality of colored prepreg layers provided between the colored prepreg fabric layer and the thick plate.

The grain direction of the plurality of colored prepreg layers may be the same as the grain direction of the cut colored prepreg layer.

Colorless prepreg layers adjacent to each other among the plurality of colorless prepreg layers may have a grain direction perpendicular to each other.

Method for adjusting the color of the composite material according to an embodiment,

It is provided on the thick plate and the thick plate formed by laminating a plurality of colorless prepreg layer formed by impregnating the resin into the reinforcing fibers, the colored prepreg layer formed by impregnating the resin in the reinforcing fibers having a color arranged in one direction In the color control method of a composite material including a decoration plate comprising a, the saturation of the composite material is adjusted by adjusting the number of stacked layers of the colored prepreg layer.

The reinforcing fibers forming the colorless prepreg layer may be arranged in one direction.

Brightness of the composite material may be adjusted by controlling the number of stacked layers of the plurality of colorless prepreg layers.

The brightness of the composite material may be adjusted by changing materials of the plurality of colorless prepreg layers.

Saturation of the composite material may be controlled by adjusting the weight per unit area of the reinforcing fibers having the colors arranged in one direction.

The adjustment of the weight per unit area of the reinforcing fibers can be made through the vibration applied to the reinforcing fibers to be adjusted or multiple bundles of reinforcing fibers.

According to another embodiment, a color control method of a composite material is

It is provided on the thick plate and the thick plate formed by laminating a plurality of colorless prepreg layer formed by impregnating the resin into the reinforcing fibers, the colored prepreg layer formed by impregnating the resin in the reinforcing fibers having a color arranged in one direction; The colorless prepreg layer is formed by cutting the colorless prepreg layer at regular intervals and arranging the cut colorless prepreg layer and the cut colorless prepreg layer so that the warp and weft yarns cross each other at 0 ° and 90 °. In the color control method of a composite material comprising a decoration plate comprising a, the chroma of the composite material is controlled by controlling the number of stacked layers of colored prepreg layer provided between the colored prepreg fabric layer and the thick plate.

The reinforcing fibers forming the colorless prepreg layer may be arranged in one direction.

Brightness of the composite material may be adjusted by controlling the number of stacked layers of the plurality of colorless prepreg layers.

The brightness of the composite material may be adjusted by changing materials of the plurality of colorless prepreg layers.

Saturation of the composite material may be controlled by adjusting the weight per unit area of the reinforcing fibers having the colors arranged in one direction.

The adjustment of the weight per unit area of the reinforcing fibers can be made through the vibration applied to the reinforcing fibers to be adjusted or multiple bundles of reinforcing fibers.

By manufacturing a composite material using a prepreg formed of a reinforcing fiber yarn having a color, it is possible to have an aesthetic feeling while maintaining excellent physical properties of the composite material.

In addition, it is possible to control the brightness of the composite material by controlling the number of materials and the number of laminations of the thick plate of the composite material. In addition, the chroma of the composite material can be adjusted by adjusting the number of stacked layers of the colored prepreg layers constituting the decoration plate of the composite material. In addition, in the production of the colored prepreg layer, it is possible to adjust the saturation of the composite material by adjusting the weight per unit area of the reinforcing fibers.

That is, according to the present invention, even when using the reinforcing fiber raw material having a limited basic color, by varying the number of stacked colorless prepreg layer and colored prepreg layer and the kind of material to be laminated, it is possible to implement a composite material of various colors . In addition, by reinforcing the reinforcing fibers to form a thin thickness of the prepreg layer, it is possible to implement a more detailed color difference.

Figure 1 shows the manufacturing process of the one-way reinforcing fiber prepreg according to the present invention.
2 is a cross-sectional view of a composite material according to an embodiment of the present invention.
3 is a cross-sectional view of a composite material according to another embodiment of the present invention.
4 is a cross-sectional view of a composite material according to another embodiment of the present invention.
5A is a plan view of a colored prepreg fabric layer.
FIG. 5B is a cross-sectional view of the colored prepreg fabric layer of FIG. 5A taken along the line II ′. FIG.
6 is a cross-sectional view of a composite material according to another embodiment of the present invention.
Figure 7a is a laminated stack of colored prepreg prepared in accordance with the present invention in sequence.
Figure 7b is sequentially stacked on the colorless prepreg layer formed by impregnating the resin in the glass fiber colored prepreg layer prepared according to the present invention.
Figure 7c is sequentially laminated on the colorless prepreg layer formed by impregnating the resin to carbon fiber colored colored prepreg prepared according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

Figure 1 shows the manufacturing process of the one-way reinforcing fiber prepreg according to the present invention.

Referring to Figure 1, the equipment for producing a one-way reinforcing fiber prepreg is a reinforcing fiber supply unit 10, a release paper supply roller 11, a resin film supply roller 12, a hot plate 13, a cooling roller 14, a release paper supply roller 15, a pair of rollers 16, and a winding roller 17 are included.

Reinforcing fiber supply unit 10 may arrange the reinforcing fibers in one direction, such a process is called expansion. The reinforcing fibers may be carbon fibers, glass fibers or aramids, and may have colors.

In the expansion process, it is possible to control the number of reinforcing fibers, or to apply the vibration to the reinforcing fibers to be adjusted to control the fiber Areal Weight (FAW) per unit area.

The release paper supply roller 11 supplies the release paper 19 coated with resin, and the resin may be a thermosetting resin or a thermoplastic resin. The thermosetting resin may be, for example, an epoxy resin, a polyester resin, a polyamide resin or a phenol resin, and the thermoplastic resin may be a polyethylene resin, nylon resin, polyacetyl resin, vinyl chloride resin, polystyrene resin or acrylic resin. . If necessary, the resin may be provided in the form of the resin film 18 by the resin film supply roller 12.

Reinforcement fibers arranged in a predetermined direction from a creel stand (not shown) are supplied to the hot plate 13, and together with the release paper 19 coated with resin, the hot plate 13 is supplied to the hot plate 13 through a feed roller. May be impregnated with the reinforcing fibers.

For example, the hot plate 13 may be heated to an appropriate temperature according to the type of resin to be impregnated, and the temperature of the hot plate 13 may be adjusted in various forms. For example, thermoplastic resins require high temperature and high pressure because they are in a polymer state of high viscosity. Therefore, the melting step of the resin may be impregnated in the reinforcing fibers in a manner of impregnation at the monomer temperature before the polymerization, reaction to the polymerization temperature and completely cured.

Specifically, when the thermosetting resin is impregnated, the hot plate 13 may be heated by steam, and when the thermoplastic resin is impregnated, the hot plate 13 may be heated by using an electric resistor. Alternatively, the hot plates 13 may be arranged in two stages so that the thermoplastic resin is primarily melted, and then completely melted in the second hot plate 13 heated to a high temperature to impregnate the resin with the reinforcing fibers.

When the resin is impregnated with the reinforcing fibers, a reinforcing fiber prepreg process for cooling by the cooling roller 14 is performed. The cooling roller 14 applies a constant pressure while cooling the resin impregnated in the reinforcing fiber to make the reinforcing fiber into a film form. Through this process, the prepreg layer is manufactured, and the prepared prepreg layer is wound around the winding roller 17 together with the back release film supplied through the release paper supply roller 15.

The prepared prepreg layer may be made of various types of reinforced fiber composites. The prepreg formed by impregnating a resin into a color-reinforced fiber (for example, glass fiber or aramid) may exhibit various colors. In addition, the prepreg formed by impregnating a resin with achromatic carbon fiber or glass fiber may be a prepreg having only light and dark.

2 is a cross-sectional view of a composite material 100 according to an embodiment of the present invention.

Referring to FIG. 2, the composite material 100 includes a thick plate 150 and a decoration plate 110 provided on the thick plate 150.

The thick plate 150 may include a plurality of colorless prepreg layers 120, 130, and 140 stacked in one direction. Colorless prepreg layer (120, 130, 140) may be formed by impregnating a resin in the reinforcing fibers arranged in one direction, wherein the reinforcing fibers may be carbon fiber or glass fiber. The colorless prepreg layers 120, 130, and 140 may be manufactured through the manufacturing process described above with reference to FIG. 1. The colorless prepreg layers 120, 130, and 140 do not have color and may have only contrast. The number of stacked colorless prepreg layers 120, 130, and 140 is not limited to that illustrated in FIG. 2, and various number of colorless prepreg layers may be stacked. Here, colorless means the inherent color which carbon fiber or glass fiber has, for example, black by carbon fiber, white by glass fiber, etc.

Adjacent colorless prepreg layers 120, 130, 140, for example, the colorless prepreg layer 120 and the colorless prepreg layer 130, or the colorless prepreg layer 130 and the colorless prepreg in FIG. 2. The layers 140 may be perpendicular to each other in the grain direction. The grain direction means a direction in which the reinforcing fibers are arranged by the reinforcing fiber supply unit 10 in the prepreg manufacturing process of FIG. 1. By stacking the grain direction of adjacent colorless prepreg layers perpendicular to each other to form a thick plate 150, the composite material 100 can have excellent physical properties in all directions.

The decoration plate 110 is provided on the thick plate 150 and includes a colored prepreg layer formed by impregnating a resin in a reinforcing fiber having a color arranged in one direction. The reinforcing fibers used when preparing the colored prepreg layer may include colored glass fibers or colored aramids. The colored prepreg layer formed by impregnating the resin in the colored reinforcing fibers arranged in one direction may exhibit a unique color, and has a grain direction along the direction in which the colored reinforcing fibers are arranged. The decoration plate 110 including the colored prepreg layer may be manufactured through the manufacturing process described above with reference to FIG. 1.

In the composite material 100, the composite material 100 when viewed from the decoration plate 110 direction is controlled by adjusting the number of stacked layers of the colorless prepreg layers 120, 130, and 140 constituting the thick plate 150. You can adjust the brightness. For example, the decoration plate 110 formed by impregnating aramid resin may have a specific color, and the colorless prepreg layer formed by impregnating carbon fiber resin may have a black color. As the colorless prepreg layer having black is stacked, the color of the composite material 100 as viewed from the decoration plate 110 direction may become darker. That is, the brightness of the composite material 100 may be lowered.

In addition, the composite material 100 when viewed from the decoration plate 110 direction by changing the material of the plurality of colorless prepreg layers 120, 130, 140 constituting the thick plate 150 in the composite material 100. You can adjust the brightness. For example, the decoration plate 110 formed by impregnating a resin in colored aramid may have a specific color, and the colorless prepreg layer formed by impregnating resin in carbon fiber may have a black color, and resin in glass fiber. The colorless prepreg layer formed by impregnation may have a translucent white color. The thick plate 150 may be formed by stacking a plurality of colorless prepreg layers formed of glass fibers or colorless prepreg layers formed of carbon fibers. The composite material formed by laminating a colorless prepreg layer formed of a plurality of carbon fibers and one colored prepreg layer formed of glass fibers may have higher brightness than a composite material formed by laminating only a colorless prepreg layer formed of carbon fibers. On the other hand, the composite material formed by laminating several colored prepreg layers formed of glass fibers may have a lower brightness than the composite material formed by laminating one colored prepreg layer formed of glass fibers.

In FIG. 1, the reinforcing fiber supply unit 10 performs the expansion process of arranging the reinforcing fibers in one direction, and in this process, the weight of the reinforcing fibers per unit area is controlled by applying a vibration to the reinforcing fibers to control the number of reinforcing fibers or to the reinforcing fibers. I can regulate it. If many bundles of reinforcing fibers are used or if the reinforcing fibers are densely arranged, the weight of the reinforcing fibers per unit area increases. On the other hand, if fewer bundles of reinforcing fibers are used or if the spacing between reinforcing fibers is increased, the weight of the reinforcing fibers per unit area is reduced.

When the decoration plate is formed of a colored prepreg layer formed by impregnating a resin with a color reinforcing fiber, the saturation of the composite material 100 may be changed by increasing or decreasing the weight of the reinforcing fiber per unit area. That is, the saturation of the colored prepreg layer can be controlled by adjusting the weight per unit area of the reinforcing fibers having the colors arranged in one direction, thereby adjusting the saturation of the composite material 100. In addition, by adjusting the weight of the reinforcing fiber per unit area, the brightness of the composite material 100 can be adjusted together.

3 is a cross-sectional view of a composite material 200 according to another embodiment of the present invention.

Referring to FIG. 3, the composite material 200 includes a thick plate 280 and a decoration plate 270 provided on the thick plate 280.

The thick plate 280 may include a plurality of colorless prepreg layers 240, 250, and 260 stacked in one direction, and the thick plate 150 and the plurality of colorless prepreg layers 120, 130, and 140 described above with reference to FIG. 2. Same as).

The decoration plate 270 is provided on the thick plate 280 and includes a plurality of colored prepreg layers 210, 220, and 230 formed by impregnating a resin in reinforcing fibers having colors arranged in one direction. The number of stacked colored prepreg layers 210, 220, and 230 is not limited to that illustrated in FIG. 3, and various numbers of colored prepreg layers may be stacked.

The reinforcing fibers used when preparing the colored prepreg layer may comprise aramid. The colored prepreg layer formed by impregnating the resin in the aramid arranged in one direction may exhibit a unique color, and has a grain direction according to the direction in which the aramid is arranged.

The plurality of colored prepreg layers 210, 220, and 230 constituting the decoration plate 270 may exhibit the same color and may be stacked to have the same grain direction. By stacking the plurality of colored prepreg layers 210, 220, and 230 to have the same grain direction, the beautiful composite material 200 having a constant grain direction when viewed in the decoration plate 270 direction can be manufactured.

In the composite material 200, the brightness of the composite material 200 may be adjusted by adjusting the number of stacked layers of the plurality of colorless prepreg layers 240, 250, and 260 constituting the thick plate 280 or changing the material. This is the same as described above in FIG.

In addition, the composite material 200 can adjust the saturation of the colored prepreg layer (210, 220, 230) by adjusting the weight per unit area of the reinforcing fibers having a color arranged in one direction, according to the composite material 200 You can also adjust the saturation of. In addition, by adjusting the weight of the reinforcing fiber per unit area, the brightness of the composite material 200 can be adjusted together.

In addition, in the composite material 200, the saturation of the composite material 200 may be adjusted by controlling the number of stacked layers of the plurality of colored prepreg layers 210, 220, and 230 constituting the decoration plate 270. For example, the plurality of colored prepreg layers 210, 220, and 230 may all have the same specific color, and by increasing or decreasing the number of stacked colored prepreg layers, the saturation of the composite material 200 may be adjusted. have. In addition, by increasing or decreasing the number of stacked colored prepreg layers, the brightness of the composite material 200 can be adjusted together.

According to the present invention, through the expansion of the reinforcing fibers it is possible to manufacture a prepreg of a thinner thickness than the conventional, finely saturation and brightness of the decoration plate by changing the number of layers of the thin colored prepreg layer produced through this process I can regulate it. The layer for expressing color in the composite material has a side to deteriorate the physical properties, but in the past, there was a tendency to express a desired color by forming a single layer, in the present invention through the lamination of the thin one-way colored prepreg layer than conventional Physical properties can be easily obtained even without using a limited color type reinforcing fibers without deteriorating compared to the prior art. In particular, the aramid fiber has a higher physical properties than glass fiber, but the yarn itself has a very dense structure, it is impossible to dye only by the yarn itself, there is a problem to implement the color when spinning the yarn. For this reason, it is difficult to realize a variety of colors compared to the glass fiber that can be dyed after yarn production, according to the present invention can be easily obtained a variety of colors desired while maintaining excellent physical properties even when using aramid fibers in the decoration plate. In addition, it is also possible to achieve a desired color combination by the plurality of colored prepreg layers having different colors.

4 is a cross-sectional view of a composite material 300 according to another embodiment of the invention, Figure 5a is a plan view of the colored prepreg fabric layer 310, Figure 5b is a colored prepreg fabric layer 310 of Figure 5a Is a cross-sectional view taken in the direction of I-I '.

Referring to FIG. 4, the composite material 300 includes a thick plate 350 and a decoration plate 310 provided on the thick plate 350.

The thick plate 350 may include a plurality of colorless prepreg layers 320, 330, and 340 stacked in one direction, and the thick plate 150 and the plurality of colorless prepreg layers 120, 130, and 140 described above with reference to FIG. 2. Same as).

The decoration plate 310 may be a colored prepreg fabric layer 310. Referring to FIG. 5A, the colored prepreg layer and the colorless prepreg layer formed through the manufacturing process of FIG. 1 are cut at regular intervals, and the cut color prepreg layer 313 and the cut colorless prepreg layer 315 are cut. The warp and weft yarns are disposed at intersections of 0 ° and 90 ° to each other to form a colored prepreg fabric layer 310.

The cutting width of the unidirectional reinforcing fiber prepreg for weaving the colored prepreg fabric layer 310 is not particularly limited and may be about 2 to 50 mm, preferably 5 to 15 mm.

In detail, referring to FIGS. 5A and 5B, for weaving the colored prepreg fabric layer 310, first, the colored prepreg layer and the colorless prepreg layer are cut to a predetermined width. The cut prepreg layers are staggered one width up and then one width down the warp array in the weaving machine. Repeat work until all slopes intersect. The weft direction varies depending on the type of weaving machine, but for example, a prepreg is placed in the weft direction, and a device such as a speed-controlled air jet is used to shoot the prepreg so that it intersects the inclined direction, and the edge is cut to fit the width. It is cut and wound up. As described above, the cut color prepreg layer 313 and the cut colorless prepreg layer 315 may be crossed so that the direction of the inclination / weft is 0 ° / 90 °, respectively, but is not limited thereto. .

In the composite material 300, the brightness of the composite material 300 may be adjusted by controlling the number of stacked layers of the plurality of colorless prepreg layers 320, 330, and 340 constituting the thick plate 350 or by changing the material. This is the same as described above in FIG.

In addition, in the composite material 300, the saturation of the colored prepreg layer 313 cut through the adjustment of the weight per unit area of the reinforcing fibers having the colors arranged in one direction can be adjusted, and thus the saturation of the composite material 300 You can also adjust. In addition, by adjusting the weight of the reinforcing fiber per unit area, the brightness of the composite material 300 can be adjusted together.

6 is a cross-sectional view of a composite material 400 according to another embodiment of the present invention.

Referring to FIG. 6, the composite material 400 includes a thick plate 480 and a decoration plate 470 provided on the thick plate 480.

The thick plate 480 may include a plurality of colorless prepreg layers 440, 450, and 460 stacked in one direction, and the thick plate 150 and the plurality of colorless prepreg layers 120, 130, and 140 described above with reference to FIG. 2. Same as).

The decoration plate 470 is provided on the thick plate 480, and the plurality of colored prepreg layers 420 and 430 formed by impregnating the resin into the reinforcing fibers having colors arranged in one direction, and the above-described in FIGS. 5A and 5B. A colored prepreg fabric layer 410, such as one. The colored prepreg layers 420 and 430 may be provided between the colored prepreg fabric layer 410 and the thick plate 480. The number of stacked colored prepreg layers 420 and 430 is not limited to that illustrated in FIG. 6, and various numbers of colored prepreg layers may be stacked.

The colored colored prepreg layers constituting the plurality of colored prepreg layers 420 and 430 and the colored prepreg fabric layer 410 may exhibit the same color. In addition, the plurality of colored prepreg layers 420 and 430 may be stacked to have the same grain direction, and the cut colored prepregs constituting the colored prepreg layers 420 and 430 and the colored prepreg fabric layer 410. The layers can also have the same grain direction. Accordingly, the composite material 400 having a constant grain direction can be manufactured.

In the composite material 400, the brightness of the composite material 400 may be adjusted by controlling the number of stacked layers of the plurality of colorless prepreg layers 440, 450, and 460 constituting the thick plate 480 or by changing the material. This is the same as described above in FIG.

In addition, in the composite material 400, the cut colored prepres constituting the colored prepreg layers 420 and 430 and the colored prepreg fabric layer 410 by adjusting the weight per unit area of the reinforcing fibers having the colors arranged in one direction. The saturation of the leg layer may be adjusted, and accordingly, the saturation of the composite material 400 may be adjusted. In addition, by adjusting the weight of the reinforcing fiber per unit area, the brightness of the composite material 400 can be adjusted together.

In addition, in the composite material 400, the saturation of the composite material 400 may be adjusted by adjusting the number of stacked layers of the plurality of colored prepreg layers 420 and 430 constituting the decoration plate 470. For example, the plurality of colored prepreg layers 420 and 430 may all have the same specific color, and the saturation of the composite material 400 may be adjusted by increasing or decreasing the number of stacked colored prepreg layers. In addition, by increasing or decreasing the number of stacked prepreg layers, the brightness of the composite material 400 may also be adjusted.

In addition, it is also possible to achieve a desired color combination by having a plurality of colored prepreg layers having different colors. According to the present invention, a composite material is prepared by using a prepreg formed of a reinforcing fiber yarn having a color. By doing so, it is possible to have an aesthetic feeling while maintaining excellent physical properties of the composite material. In addition, it is possible to control the brightness of the composite material by controlling the number of materials and the number of laminations of the thick plate of the composite material. In addition, the chroma of the composite material can be adjusted by adjusting the number of stacked layers of the colored prepreg layers constituting the decoration plate of the composite material. In addition, in the production of the colored prepreg layer, it is possible to adjust the saturation of the composite material by adjusting the weight per unit area of the reinforcing fibers. In addition, conventionally, in order to express various colors according to various color demands, resins of various colors, paints, and color fibers had to be secured in advance, and inventory processing by resins, paints, and color fibers remaining after producing a composite material of a desired color was also performed. Although it was a problem, according to the present invention, only a limited number of basic color reinforcing fibers can obtain a desired color by a simple process.

Figure 7a is a stack of the colored prepreg layer prepared in accordance with the present invention in sequence, Figure 7b is a colored prepreg layer prepared in accordance with the present invention sequentially on a colorless prepreg layer formed by impregnating a glass fiber resin Fig. 7c is a lamination of the colored prepreg layer prepared according to the present invention on a colorless prepreg layer formed by impregnating carbon fiber with resin. That is, a1 to a5 are laminated one to five colored prepreg layers, b1 to b5 are laminated one to five colored prepreg layers each on a colorless prepreg layer formed of glass fibers, c1 to c5 are one to five colored prepreg layers laminated on a colorless prepreg layer formed of carbon fibers, respectively.

Referring to FIGS. 7A to 7C, it can be seen that the saturation and brightness of the composite material change slightly according to the change in the number of stacked prepregs. In addition, it was confirmed that the brightness changes depending on the presence or absence of the colorless prepreg layer used as the thick plate and the change of the material forming the colorless prepreg layer.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Claims (23)

In a composite material comprising a plurality of prepreg layers,
A thick plate formed by laminating a plurality of colorless prepreg layers formed by impregnating resin into colorless reinforcing fibers arranged in one direction;
At least one colored prepreg layer provided on the thick plate and formed by impregnating a resin in colored reinforcing fibers arranged in one direction; And
It is provided on the colored prepreg layer, the colored prepreg layer formed by impregnating the resin in the colored reinforcing fibers arranged in one direction is cut at regular intervals, and is formed by impregnating the resin in the colorless reinforcing fibers arranged in one direction A colorless prepreg fabric layer formed by cutting a colorless prepreg layer at regular intervals and arranging the cut color prepreg layer and the warp and weft of the cut colorless prepreg layer at an intersection;
Adjusting the brightness of the composite material through at least one of the weight per unit area of the colorless reinforcing fiber of the thick plate, the number of lamination of the colorless prepreg layer of the thick plate and the weight per unit area of the colorless reinforcing fiber of the cut colorless prepreg layer and,
And controlling the saturation of the composite material through at least one of the number of stacked prepreg layers and the weight per unit area of the colored reinforcement fibers of the cut colored prepreg layer. The method of claim 1,
The colorless prepreg layers adjacent to each other of the plurality of colorless prepreg layers of the thick plate, the grain direction of the reinforcing fibers are perpendicular to each other. The method of claim 1,
The colorless reinforcing fiber comprises a carbon fiber or glass fiber, composite material. The method of claim 1,
The colored fiber reinforced aramid, composite material. One or more thick plates formed by laminating a plurality of colorless prepreg layers formed by impregnating a resin into a colorless reinforcing fiber arranged in one direction, the one or more formed by impregnating a resin in a colored reinforcing fiber arranged in one direction. It is provided on the colored prepreg layer and the colored prepreg layer, by cutting the colored prepreg layer formed by impregnating the resin in the colored reinforcing fibers arranged in one direction at regular intervals, and the resin to the colorless reinforcing fibers arranged in one direction Comprising a colorless prepreg layer formed by impregnating at a predetermined interval, a composite comprising a colored prepreg fabric layer formed by intersecting the warp and weft of the cut color prepreg layer and the cut colorless prepreg layer In the color control method of the material,
Adjusting the brightness of the composite material through at least one of the weight per unit area of the colorless reinforcing fiber of the thick plate, the number of lamination of the colorless prepreg layer of the thick plate and the weight per unit area of the colorless reinforcing fiber of the cut colorless prepreg layer Doing; And
And adjusting the saturation of the composite material through at least one of the number of stacked colored prepreg layers and the weight per unit area of colored reinforced fibers of the cut colored prepreg layer. The method of claim 5,
The colorless prepreg layer adjacent to each other of the plurality of colorless prepreg layer of the thick plate, the grain direction of the reinforcing fibers are perpendicular to each other. The method of claim 5,
The weight per unit area of the colorless reinforcing fiber and the colored reinforcing fiber is controlled through the vibration applied to the reinforcing fiber to be bundled or adjusted to the bundle of reinforcing fibers, color control method of the composite material. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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