JP2003136634A - Fiber-reinforced plastic composite material and method for manufacturing the material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fiber-reinforced plastic composite material which prevents the thermal deterioration of a lamination interface due to the internal heat generation from occurring, when a tensile force and a compressive force are repeatedly applied and thereby, upgrades a fatigue resistance. SOLUTION: This fiber-reinforced plastic composite material is characterized in that a plurality of fiber-reinforced plastic layers are laminated and highly heat conductive ceramic particles are interposed at a lamination interface between the plastic layers as a single layer where the particles are dispersed within the interface.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a fiber-reinforced plastic composite material and a method for producing the same.

[0002]

2. Description of the Related Art A fiber-reinforced plastic composite material of this type has a structure in which a plurality of prepregs made of a fiber-reinforced plastic such as a carbon fiber-reinforced epoxy resin are superposed on each other and laminated. It is used as a structural material. Since the fiber-reinforced plastic composite material is fatigued due to delamination at the interface of a plurality of fiber-reinforced plastic layers when tensile force and compression force are repeatedly applied, improvement for preventing delamination is desired. There is.

In view of the above, the conventional fiber-reinforced plastic composite material is a method of stacking a plurality of prepregs obtained by adding other components such as rubber and resin to the matrix resin of the fiber-reinforced plastic, and heating and pressurizing them. It is manufactured by a method in which prepregs made of fiber reinforced plastic are superposed with an adhesive layer interposed therebetween, and heated and pressed to be laminated. However, even in fiber-reinforced plastic composite materials produced by these methods,
It has been difficult to effectively prevent delamination at the interface of a plurality of fiber reinforced plastic layers.

On the other hand, "IMPROVING THE FATIGUE RESISTANC
E OF CARBON / EPOXY LAMINATES WITH DISPERSED-PARTICLE
INTERLAYERS "Act mater. Vol. 46, No. 7, pp. 2455-
2460, 1998 discloses a carbon fiber reinforced epoxy resin composite material in which a large number of particles of a polymer such as modified amorphous polyamide are dispersed at the laminated interface of a plurality of carbon fiber reinforced epoxy resin layers. The invention related to the above paper is also disclosed in JP-A-7-41577.

[0005]

Such a carbon fiber reinforced epoxy resin composite material is a carbon fiber reinforced epoxy resin composite material in which a large number of polymer particles are dispersed at the laminated interface of the carbon fiber reinforced epoxy resin layer, and the carbon fiber reinforced by the anchoring action of the polymer particles. Although the adhesive strength and the shear strength of the epoxy resin layer were improved, it was difficult to improve the fatigue caused by the thermal deterioration of the laminated interface due to the internal heat generation when the tensile force and the compressive force were repeatedly applied.

The present invention aims to provide a fiber reinforced plastic composite material having improved fatigue resistance by preventing thermal deterioration of a laminate interface due to internal heat generation when tensile force and compression force are repeatedly applied, and a method for producing the same. It is what

[0007]

A fiber-reinforced plastic composite material according to the present invention comprises a plurality of fiber-reinforced plastic layers which are laminated together and ceramic particles having high thermal conductivity which are dispersed in a single particle at the interface between the layers. It is characterized in that it is interposed as a layer.

In the method for producing a fiber-reinforced plastic composite material according to the present invention, the ceramic particles having a high thermal conductivity are sprayed on the surface of the prepreg made of the fiber-reinforced plastic without overlapping in the thickness direction. In step 1, a step of forming a layer in which single particles are dispersed and a step of preparing a plurality of prepregs having the single particle dispersed layer, laminating these, and then heating and pressing are prepared.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.

In the fiber-reinforced plastic composite material of the present invention, a plurality of fiber-reinforced plastic layers are laminated, and at the laminating interface between these layers, ceramic particles having high thermal conductivity are intercalated as a single-particle-dispersed layer. It has a structure.

Specifically, as shown in FIG. 1, for example, eight fiber-reinforced plastic layers 1 are laminated, and highly heat-conductive ceramic particles 2 are formed in a single plane on the laminated interface of these fiber-reinforced plastic layers 1. A fiber-reinforced plastic composite material is constituted by interposing it as a layer 3 in which particles are dispersed (single particle dispersion layer) 3.

The term "single particle dispersion layer" as used herein means that a large number of highly heat conductive ceramic particles are dispersed in a single state in the plane direction at the lamination interface of the fiber reinforced plastic layers to form a layer. Means In other words, a “single particle dispersion layer” means that a large number of highly heat-conductive ceramic particles are dispersed in individual directions in the plane direction without overlapping in the stacking interface in the stacking direction to form a layer. It means that

The ceramic particles forming the single particle dispersion layer do not exist independently at the laminating interface of the fiber reinforced plastic layer, and at least a part of the ceramic particle is located from the central portion of the laminating interface to the outer peripheral edge. It is necessary to form a heat transfer path which exists in the state of being in contact with each other in the surface direction. The single-particle dispersed layer having such a form has, for example, when hexagonal boron nitride (h-BN) particles having an average particle diameter of 3 μm are used as the ceramic particles having high thermal conductivity, these h-BN particles are used for the above-mentioned lamination interface. Per 1 cm ² per 0.0
It can be realized by making 9 mg or more, more preferably 0.184 mg or more present.

Examples of the fiber reinforced plastic include thermosetting resin or thermoplastic resin such as glass fiber, carbon fiber,
The one reinforced with at least one reinforcing fiber selected from aramid fiber and silicon carbide fiber can be mentioned. Examples of the thermosetting resin used here include epoxy resin, phenol resin, unsaturated polyester resin and the like. As the thermoplastic resin,
For example, nylon, polyether ether ketone, polyphenylene sulfide, etc. can be mentioned. The reinforcing fibers may be in the form of a cloth or a form arranged in one direction.

Particularly, as the fiber reinforced plastic, one in which the reinforced fibers are arranged in one direction is used, and the arrangement direction of the reinforced fibers in the fiber reinforced plastic layers adjacent to each other in the laminating direction is made different. It is preferable. Examples of the form of stacking in different arrangement directions include orthogonal stacking, oblique stacking, and pseudo isotropic.

The fiber-reinforced plastic has the above-mentioned structure, and further allows the ceramic particles having high thermal conductivity to be dispersed and contained therein.

The high thermal conductivity ceramic is 0.01 cal / cm · s · ° C. or more at room temperature, more preferably 0.03 cal / cm · s · ° C. or more at room temperature, further preferably 0.07 cal / cm at room temperature.・ It is desirable to have a thermal conductivity of s · ° C or higher. Examples of such ceramics include aluminum nitride [AlN] (thermal conductivity at room temperature; 0.07 cal / cm · s · ° C.), hexagonal boron nitride [h-BN] (thermal conductivity at room temperature; 0). .08ca
1 / cm · s · ° C.), cubic boron nitride [cBN] (thermal conductivity at room temperature; 3.1 cal / cm · s · ° C.), and the like.

The ceramic particles preferably have an average particle size of 3 to 6 μm. In addition, the ceramic particles may have a uniform particle size within the single particle dispersion layer or a uniform particle size between the single particle dispersion layers.

Each of the single particle dispersion layers is formed so that the density of the ceramic particles is different between the respective lamination interfaces, for example, an arbitrary pattern in the lamination direction or an intended distribution pattern in the lamination direction. To allow that. More specifically, each of the single-particle dispersed layers is allowed to be formed so that the density of the ceramic particles gradually changes in the stacking direction between the stacking interfaces.

Next, a method for manufacturing the fiber-reinforced plastic composite material according to the present invention will be described.

(First Step) Ceramic particles having high thermal conductivity are sprinkled on the surface of a prepreg made of fiber reinforced plastic without overlapping in the thickness direction. At this time, since the surface of the prepreg has tackiness, the dispersed ceramic particles adhere to the surface of the prepreg and are dispersed as single particles within the surface to form a layer. That is, the single particle dispersion layer described in the fiber-reinforced plastic composite material of the present invention is formed on the prepreg surface.

As the fiber reinforced plastic and the ceramic having high thermal conductivity, the same ones as described in the fiber reinforced plastic composite material of the present invention can be used.

The fiber reinforced plastic constituting the prepreg is at least one reinforced fiber selected from glass fiber, carbon fiber, aramid fiber and silicon carbide fiber in which thermosetting resin or thermoplastic resin is unidirectionally arranged. It is preferable to use the one reinforced with.

When the ceramic particles are sprayed on the surface of the prepreg, all the ceramic particles are not individually adhered to the surface of the prepreg, but at least some of the ceramic particles are spread from the central portion of the prepreg surface to the outer peripheral edge. It is necessary to adhere them so that they are in contact with each other in the surface direction, and to spray so that a path for heat transfer is created at the lamination interface after lamination by heating and pressing which will be described later. To form such a heat transfer path, for example, an average particle size of 3 μm
When hexagonal boron nitride (h-BN) particles of m are used as the ceramic particles of high thermal conductivity, these h-BN particles are added to the prepreg surface in an amount of 0.09 m per 1 cm ² .
It can be realized by spraying so as to be g or more, more preferably 0.184 mg or more.

When the ceramic particles are sprayed on the surfaces of the plurality of prepregs, the ceramic particles are allowed to adhere to the prepreg surfaces at different densities to form a single particle dispersion layer between the prepregs.

(Second Step) A plurality of prepregs having the single particle dispersion layer are prepared, and these are laminated, and then heated and pressed to bring the ceramic particles in-plane at the lamination interface of the plurality of fiber reinforced plastic layers. A fiber-reinforced plastic composite material having a structure in which a single particle dispersed layer, that is, a single particle dispersed layer is interposed is manufactured.

The heat and pressure treatment is preferably determined depending on the combination of the resin and the fibers that constitute the prepreg used. For example, in the case of fiber reinforced plastic used as aircraft parts, 121 to 132 ° C,
It is sufficient to heat and pressurize at about 0.4 MPa.

When laminating a plurality of prepregs having a single particle dispersion layer in which the ceramic particles have different densities,
The ceramic particles of the single particle dispersion layer are laminated so that the density of the ceramic particles is, for example, an arbitrary pattern in the laminating direction of the prepreg or a pattern having an intended distribution in the laminating direction, more specifically, stepwise in the laminating direction. Allowing stacking to vary.

As the fiber-reinforced plastic constituting the prepreg, at least one reinforcing fiber selected from glass fiber, carbon fiber, aramid fiber and silicon carbide fiber in which a thermosetting resin or a thermoplastic resin is unidirectionally arranged. When using a reinforced one, when laminating a plurality of the prepregs having the single particle dispersion layer,
It is preferable that the arranging directions of the reinforcing fibers in the fiber-reinforced plastic are different between the adjacent prepregs. Examples of the form of stacking in different array directions include a cross stacking method, a cross stacking method, and pseudo isotropicity.

As described above, according to the present invention, a plurality of fiber reinforced plastic layers are laminated, and at the interface between the layers, ceramic particles having high thermal conductivity are intercalated as a layer in which single particles are dispersed in the plane. By
The adhesion effect between the fiber reinforced plastic layers can be improved by the anchor effect of each ceramic particle of the single particle dispersion layer.

Further, since the ceramic particles have higher mechanical strength than the polymer particles, the shearing force at the laminating interface of the fiber reinforced plastic layer can be improved.
In addition, when ceramic particles are laminated in the laminating direction at the laminating interface of the fiber reinforced plastic layer to form a layer by dispersing multi-layer particles, when tensile force and compressive force are repeatedly applied, slippage between the ceramic particles occurs. As a result, the shearing force may rather decrease.

In the fiber-reinforced plastic composite material having such a structure, even if tensile force and compression force are repeatedly applied, delamination at the interface of a plurality of fiber-reinforced plastic layers can be prevented for a long period of time, which is excellent. Fatigue resistance can be expressed.

Further, the fiber-reinforced plastic composite material according to the present invention is characterized in that the ceramic particles constituting the single particle dispersion layer have high thermal conductivity (for example, 0.01 cal / room temperature at room temperature).
By using such ceramic particles having high thermal conductivity (cm · s · ° C. or more), thermal deterioration different from mechanical fatigue when tensile force and compressive force are repeatedly applied. It is possible to prevent fatigue caused by.

That is, normally, when tensile force and compression force are repeatedly applied to the fiber-reinforced plastic composite material,
Internal heat generation (especially heat generation at the stacking interface) occurs, and the stacking interface is thermally deteriorated. The thermal deterioration of the laminated interface becomes a factor for reducing the shearing force.

On the other hand, in the present invention, when internal heat generation (especially heat generation at the lamination interface) occurs when the tensile force and the compressive force are repeatedly applied, the heat is highly thermally conductive (for example, 0.01 cal at room temperature). / Cm · s · ° C. or more) can be diffused to the outer peripheral edge of the lamination interface through a single particle dispersion layer made of ceramic particles, so that thermal deterioration of the lamination interface due to the internal heat generation is mitigated or prevented. You can
It is possible to prevent a decrease in shearing force at the lamination interface. As a result, it is possible to prevent delamination at the interface between a plurality of fiber reinforced plastic layers for a long period of time.

Therefore, by laminating a plurality of fiber reinforced plastic layers and interposing ceramic particles having high thermal conductivity at the interface of the layers as a layer in which single particles are dispersed in the plane, the single particle dispersion layer is formed. The improvement of the adhesive force and the shearing force at the laminating interface of each of the fiber reinforced plastic layers by the above, and the reduction of the shearing force due to the heat deterioration due to the heat dissipation of the single particle dispersion layer composed of the ceramic particles of high thermal conductivity, Since delamination can be prevented by synergistic action with prevention, a fiber-reinforced plastic composite material having excellent fatigue resistance can be realized.

Further, a single particle dispersion layer is interposed at a lamination interface of a plurality of fiber reinforced plastic layers with different densities of ceramic particles. For example, the single particle dispersion layer has a ceramic particle density between the lamination interfaces. Fiber reinforced plastics that effectively prevent delamination and improve fatigue resistance in accordance with the use form, that is, the form in which tensile force and compression force are received, by interposing them so as to change in a stepwise manner in the stacking direction. Composite materials can be realized.

Further, as the fiber-reinforced plastic, one in which the reinforcing fibers are arranged in one direction is used, and the arrangement direction of the reinforcing fibers in the fiber-reinforced plastic layers adjacent to each other in the laminating direction is made different. As a result, it is possible to realize a fiber-reinforced plastic composite material with further improved mechanical strength against repeated tensile and compressive forces in the plane direction of the laminated interface.

According to the method of the present invention, the ceramic particles having high thermal conductivity are dispersed on the surface of the prepreg made of fiber reinforced plastic without overlapping in the thickness direction to disperse the ceramic particles in the plane. Layer is formed, a plurality of prepregs having this single particle dispersion layer are prepared, and these are laminated, and then heated and pressed, whereby the lamination interface of each fiber reinforced plastic layer by the single particle dispersion layer as described above. Delamination is prevented by the synergistic effect of improving the adhesive force and shearing force at the same time and preventing the decrease in shearing force due to heat deterioration due to the heat dissipation of the single particle dispersion layer made of ceramic particles with high thermal conductivity. A fiber-reinforced plastic composite material having excellent fatigue resistance can be manufactured.

[0040]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the drawings.

Example 1 First, as shown in FIG. 2A, an epoxy resin was used as a matrix, and carbon fibers were used as reinforcing fibers, and the carbon fibers were unidirectional (the arrow direction in FIG. 2A). 0.11 mm thick prepregs arranged at 0 ° (trade name: T8 manufactured by Toray Industries, Inc.)
Eight pieces of 00H / # 2500) 11 were prepared. Continuing,
The surface of these prepregs 11 has an average particle size of 3
A large number of hexagonal boron nitride [h-BN] (heat conductivity at room temperature; 0.08 cal / cm · s · ° C.) particles having a particle size of 0.18 per 1 cm ^{2 on the} surface of the prepreg 11 were used.
It was sprinkled so that it would be 4 mg. At this time, the h-BN particles do not individually and independently adhere to the surface of the prepreg 11, and most of the h-BN particles do not adhere to the prepreg 1.
1 From the center of the surface toward the outer peripheral edge, they were attached in a state of being in contact with each other in the surface direction, and a single particle dispersed layer was formed.

Next, as shown in FIG. 2B, the prepreg 11 on which the single particle dispersion layer (not shown) is formed.
_{1 to} 11 ₈ with the carbon fiber array direction being 0 °, +
45 °, -45 °, 90 °, 90 °, -45 °, +45
They were superposed so that they became 0 ° and 0 °. Subsequently, this laminate was installed in a pressure device inside the autoclave, and as shown in FIG. 3, the temperature inside the autoclave was raised to 130 ° C. over about 50 minutes at a temperature rising rate of 2 ° C./minute. A pressure of 0.4 MPa was applied to the laminate by the pressure device, the temperature and the pressure were maintained for 180 minutes, and then the temperature inside the autoclave was gradually cooled to 400 ° C. after 400 minutes. The pressure applied to the laminate was continued even during the cooling process to prevent warpage of the final carbon fiber reinforced epoxy resin composite material. With such heating and pressurization, FIG.
A carbon fiber reinforced epoxy resin composite material 12 having a thickness of 0.9 mm shown in FIG.

The carbon fiber reinforced epoxy resin composite material 12 thus obtained has eight carbon fiber reinforced epoxy resin layers 13 _{1 to} 13 ₈ as shown in FIG. -45 °, 90 °, 90
The carbon fiber reinforced epoxy resin layers 13 _{1 to} 13 ₈ were laminated in such a manner that the h-BN particles 14 were dispersed as single particles within the plane. The layer (single particle dispersion layer) 15 had an intervening structure.

(Comparative Example 1) A prepreg having a thickness of 0.11 mm and made of a carbon fiber reinforced epoxy resin having no single particle dispersion layer formed on its surface (trade name: T80 manufactured by Toray Industries, Inc.).
8 sheets of OH / # 2500) were prepared, these prepregs were stacked in the same manner as in Example 1, and heated and pressed to produce a carbon fiber-reinforced epoxy resin composite material having a thickness of 0.9 mm.

Comparative Example 2 A 0.11 mm-thick prepreg (trade name: T800H / # 2500, manufactured by Toray Industries, Inc.) made of a carbon fiber reinforced epoxy resin has an average particle diameter of 3 μm.
m PZT (PbZrO ₃ -PbTiO ₃ [thermal conductivity at room temperature; 0.003 cal / cm · s · ° C.]) particles were dispersed to form a single particle dispersion layer having the same form as in Example 1. Eight prepregs each having this single particle dispersion layer formed were prepared, and these prepregs were stacked in the same manner as in Example 1 and heated and pressed to produce a carbon fiber reinforced epoxy resin composite material having a thickness of 0.9 mm. .

The carbon fiber reinforced epoxy resin composite materials of Example 1 and Comparative Examples 1 and 2 thus obtained were subjected to the following tensile fatigue test.

Each carbon fiber reinforced epoxy resin composite material was cut and processed to have a length 1 shown in FIGS. 5 (a) and 5 (b).
A strip piece 31 having a width of 30 mm, a width of 10 mm and a thickness of 0.9 mm is provided, and a protective plate 32 made of glass fiber reinforced epoxy resin is provided on both sides of the strip piece 31 with a length of 40 mm.
A test piece 33 was produced by pasting the sheet so that the vicinity of the center thereof was exposed on the front and back sides.

Using an electro-hydraulic servo type fatigue tester (trade name: L7-2.50-S manufactured by Mori Engineering Co., Ltd.), the protective plates 32 at both ends of the test piece 33 are clamped by a pair of gripping members, and the minimum stress is applied. And the maximum stress ratio, that is, the stress ratio is constant at 0.1, and the load is constant under tensile fatigue test conditions,
A fatigue test was conducted. Repetition speed (frequency) is 10H
Performed with a sine wave at z. By this test, the relationship between the fatigue repetition number (fatigue life) and the maximum repetition stress was obtained. The result is shown in FIG.

As is apparent from FIG. 6, h is formed at the laminated interface of the carbon fiber reinforced epoxy resin layers 13 _{1 to} 13 ₈ shown in FIG.
The carbon fiber reinforced epoxy resin composite material of Example 1 having a structure in which the BN particles 14 are interposed as a single particle-dispersed layer (single particle dispersed layer) 15 in the plane thereof,
Compared to the carbon fiber reinforced epoxy resin composite material of Comparative Example 1 having a structure in which a carbon fiber reinforced epoxy resin layer is simply laminated, the degree of decrease in the maximum cyclic stress with the increase in the fatigue repetition number (fatigue life) is low, and excellent resistance It can be seen that it has fatigue.

On the other hand, the carbon fiber reinforced epoxy of Comparative Example 2 having a structure in which PZT particles, which is a kind of ceramic, are present as a single particle dispersion layer of the same form as in Example 1 at the laminated interface of the carbon fiber reinforced epoxy resin layer. It can be seen that the resin composite material has lower fatigue resistance than the carbon fiber-reinforced epoxy resin composite material of Comparative Example 1 having a structure in which carbon fiber-reinforced epoxy resin layers are simply laminated. From this, if the material forming the single particle dispersion layer is not all ceramic particles exhibit high fatigue resistance,
It can be seen that excellent fatigue resistance can be exhibited only by forming the single particle dispersion layer with the specific ceramic particles having high thermal conductivity.

A tensile fatigue test was conducted on the test pieces of Example 1 and Comparative Example 1 using the electrohydraulic servo type fatigue tester (trade name: L7-2.50-S manufactured by Mori Engineering Co., Ltd.). In the meantime, infrared temperature detection device (NEC Sanei Co., Ltd. product name; Thermo Tracer TH
1104) and the strip 31 of the test piece 33 shown in FIG.
The temperature transition on the outer surface was measured. The result is shown in FIG. 7.

As is apparent from FIG. 7, the temperature of the outer surface of the test piece of Example 1 is higher by about 10 ° C. than that of the test piece of Comparative Example 1. This means that in the carbon fiber reinforced epoxy resin composite material of Example 1, the h-BN particles 14 having high thermal conductivity are formed on the surface of the carbon fiber reinforced epoxy resin layers 13 _{1 to} 13 ₈ shown in FIG. Since it is interposed as a layer in which one particle is dispersed (single particle dispersed layer) 15, it is proved that the internal heat generation of the test piece during the tensile fatigue test was well dissipated to the outside by the single particle dispersed layer 15. As a result, the effect of cooling the inside of the composite material can be exhibited.

In the first embodiment, carbon fiber reinforced epoxy resin is used as the fiber reinforced plastic resin and h-BN particles are used as the ceramic particles having high thermal conductivity. It is possible to obtain a fiber-reinforced plastic composite material having excellent fatigue resistance equivalent to or higher than that of Example 1 even when using other ceramic particles having high thermal conductivity such as fiber-reinforced plastic resin, AlN, and cBN particles. it can.

[0054]

As described in detail above, according to the present invention, thermal deterioration of the laminate interface due to internal heat generation when tensile force and compression force are repeatedly applied is prevented, and delamination is effectively prevented. It is possible to provide a fiber-reinforced plastic composite material useful for various structural materials such as aircraft wings having improved fatigue resistance and a method for producing the same.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a fiber-reinforced plastic composite material according to the present invention.

FIG. 2 is a diagram showing a process of producing a carbon fiber-reinforced epoxy resin composite material in Example 1 of the present invention.

FIG. 3 is a graph showing heating and pressurizing conditions in an autoclave when producing a carbon fiber-reinforced epoxy resin composite material in Example 1 of the present invention.

FIG. 4 is a partially cutaway perspective view showing a carbon fiber reinforced epoxy resin composite material manufactured according to Example 1 of the present invention.

FIG. 5 is a diagram showing test pieces for evaluating Example 1 of the present invention and Comparative Examples 1 and 2.

FIG. 6 is a graph showing the results of a tensile fatigue test using the test pieces of Example 1 of the present invention and Comparative Examples 1 and 2.

FIG. 7 is a graph showing the temperature change of the outer surface of a test piece of Example 1 and Comparative Example 1 when a tensile fatigue test was performed using the test piece.

[Explanation of symbols]

1 ... fiber-reinforced plastic layer, 2 ... ceramic particles, 3,15 ... single-particle dispersed layer, 11, 11 ₁ to 11 ₈ ... prepreg, 12 ... carbon fiber reinforced epoxy resin composites, _{131-134 8} ... Carbon fiber Reinforced epoxy resin layer, 14 ... h-BN particles, 31 ... Strip, 33 ... Test piece.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) // B29K 105: 08 B29K 105: 08 B29L 9:00 B29L 9:00 F term (reference) 4F100 AA14A AA14B AA14C AA16A AA16C AD00A AD00B AD00C AD04A AD04B AD04C AD06A AD06B AD06C AD08A AD08C AD11A AD11C AG00A AG00C AK01A AK01B AK47A AK47C AK53 BA03 BA04 BA05 BA06 BA08 BA10A BA10C BA22 DE01A DE01B DE01C DG01A DG01C DH01A DH01C EH762 EJ172 EJ422 GB31 JA13A JA13B JA13C JB13A JB13B JB16A JB16B JJ01A JJ01B JJ01C JJ03 JK01 YY00A YY00B YY00C 4F204 AA36 AA39 AD04 AD05 AD07 AD16 AD35 AG03 AH31 FA01 FB01 FF05 FG03 FN11 FN15

Claims (13)

[Claims] 1. A fiber-reinforced plastic composite characterized in that a plurality of fiber-reinforced plastic layers are laminated, and ceramic particles having high thermal conductivity are intercalated as a layer in which single particles are dispersed in-plane at the laminated interface. material. 2. The fiber reinforced plastic is a thermosetting resin or a thermoplastic resin reinforced with at least one reinforcing fiber selected from glass fiber, carbon fiber, aramid fiber and silicon carbide fiber. The fiber-reinforced plastic composite material according to claim 1. 3. The fiber reinforced plastic is a thermosetting resin or a thermoplastic resin reinforced with at least one reinforcing fiber selected from unidirectionally arranged glass fibers, carbon fibers, aramid fibers and silicon carbide fibers. The fiber-reinforced plastic composite material according to claim 1, wherein 4. The fiber reinforced plastic is obtained by reinforcing a thermosetting resin or a thermoplastic resin with at least one reinforcing fiber selected from a glass fiber, a carbon fiber, an aramid fiber and a silicon carbide fiber, and further has a high thermal conductivity ceramic. The fiber-reinforced plastic composite material according to claim 1, wherein the particles are contained in a dispersed state. 5. The fiber-reinforced plastic composite material according to claim 1, wherein the high thermal conductivity ceramic has a thermal conductivity of 0.01 cal / cm · s · ° C. or higher at room temperature. 6. The fiber-reinforced plastic composite material according to claim 5, wherein the ceramic having high thermal conductivity is boron nitride. 7. The fiber-reinforced plastic composite material according to claim 5, wherein the ceramic having high thermal conductivity is aluminum nitride. 8. The fiber-reinforced plastic composite according to claim 1, wherein each of the single particle dispersion layers is formed so that the ceramic particles have different densities between the laminated interfaces. material. 9. The single particle dispersion layer is formed so that the density of the ceramic particles changes stepwise in the laminating direction of the fiber reinforced plastic. Or the fiber-reinforced plastic composite material described above. 10. A step of forming a layer in which ceramic particles having a high thermal conductivity are dispersed in the surface of the prepreg made of fiber reinforced plastic without overlapping in the thickness direction so as to disperse the ceramic particles in a single particle. And preparing a plurality of prepregs having the single particle dispersion layer,
A method for producing a fiber-reinforced plastic composite material, which comprises a step of heating and pressing after laminating these. 11. The method according to claim 10, wherein when the ceramic particles are dispersed on the surface of the prepreg, a layer in which the ceramic particles are dispersed in a single particle with different densities is formed among a plurality of prepregs. Manufacturing method of fiber-reinforced plastic composite material. 12. When laminating a plurality of prepregs having a single particle dispersion layer in which the ceramic particles have different densities,
The method for producing a fiber-reinforced plastic composite material according to claim 11, wherein the ceramic particles of the single particle dispersion layer are laminated so that the density of the ceramic particles changes stepwise in the laminating direction of the prepreg. 13. As the fiber reinforced plastic constituting the prepreg, at least one reinforcing material selected from glass fiber, carbon fiber, aramid fiber and silicon carbide fiber in which a thermosetting resin or a thermoplastic resin is unidirectionally arranged. When a plurality of prepregs having the single particle dispersion layer are laminated using a fiber-reinforced one, the arrangement direction of the reinforcing fibers in the fiber-reinforced plastic is different between adjacent prepregs. The method for producing a fiber-reinforced plastic composite material according to any one of claims 10 to 12.