CN104385627A - Advanced resin-based composite material with anti-lightning surface function layer, and preparation method thereof - Google Patents

Abstract

The invention discloses an advanced resin-based composite material with a lightning-resistant surface functional layer and a preparation method. The prepreg is cut layer by layer according to the shape, size and mechanical properties of the composite structural part, and the cut layers of prepreg are sequentially laid in the mold, and then pre-compacted. On the basis of initially forming the main body shape of the composite material structure, one or several layers of dry fiber fabrics are laid on the pre-compacted prepreg. Inject the prepared functional resin system into the sealed mold cavity, impregnate the fiber fabric in the mold cavity, or coat the liquid functional resin system on the surface of each layer of dry fiber fabric to initially form a three-dimensional conductive functional layer. In the mold, the prepreg that has been pre-compacted and the conductive functional layer are hot-pressed together, so that the two parts of the material are co-cured to achieve integral molding. Finally, the mold is opened to obtain a fiber-reinforced resin-based composite material structure with a lightning-resistant surface functional layer.

Description

Advanced resin-based composite material with lightning-resistant surface functional layer and preparation method

technical field

The invention belongs to the field of materials, in particular to an advanced resin-based composite material with a lightning-resistant surface functional layer and a preparation method.

Background technique

Compared with traditional materials, advanced resin matrix composites show many superior characteristics in terms of performance, design, and molding. For example, advanced resin matrix composites have excellent static and dynamic mechanical properties, and their specific strength and specific modulus are 3-5 times or even higher than that of steel and aluminum alloy, and the fatigue strength of carbon fiber reinforced epoxy resin matrix composites can be as high as 90% of the static strength, while the fatigue strength of steel and aluminum alloy can only reach about 50% of the static strength . It is precisely because of the excellent mechanical properties of advanced composite materials that the weight of structural parts can be greatly reduced, for example, the weight of aircraft structures can be reduced by 25% to 30%. Advanced resin-based composites have strong designability. By selecting different high-performance fibers and high-performance resins and adopting appropriate technology to shape and control them, advanced composite materials with various structures and properties can be obtained. By appropriately increasing or decreasing various material components, the structure-function integration of composite materials can be realized. Large and complex composite structural parts can also be formed in one piece, thereby reducing the number of product parts and connections.

Based on the above characteristics, fiber-reinforced resin-based composites are increasingly used in aerospace, automobiles, ships, and other transportation industries. In particular, the use of composite materials in aircraft structures has grown steadily over the past 30 years, for example, the use of composite materials in Boeing B787 and Airbus A350-XWB exceeds 50% of the weight of the aircraft. However, with the extensive application of composite materials in aircraft structures, the frequent B787 accidents in recent years have caused the international community to question the safety and reliability of composite materials, including the lightning resistance, hail resistance and impact resistance of composite structural parts. characteristics, fuel tank lightning ignition problem, flame retardant and smoke retardant characteristics, etc. This involves not only the mechanics of composite materials, but also its functional properties such as electrical and thermal conductivity.

Carbon fiber composites exhibit not only anisotropy in terms of mechanical properties, but also significant anisotropy in terms of electrical and thermal conductivity. The thermal resistance and electrical resistance in the three directions of space (ie, along the fiber direction, the vertical fiber direction in the layup, and the layup thickness direction) are different, and there are several orders of magnitude difference. Usually, the resistivity along the carbon fiber direction in the layup is the smallest, and the resistivity along the thickness direction of the layup is the largest, which is about 10 ³ to 10 ⁵ times the resistivity along the fiber direction. Based on the current situation of poor electrical and thermal conductivity of composite materials in the thickness direction of the laminate, it is urgent to develop structure-function integrated anti-lightning composite materials and their forming methods.

The commonly used anti-lightning damage method is to cover a layer of metal mesh on the surface of the composite structural parts of the aircraft, but this method increases the weight of the structural parts, which deviates from the lightweight design goal; The thermal expansion coefficients of the composite materials do not match, which can easily lead to the peeling of the metal mesh; it is difficult to lay the metal mesh on the geometrically complex parts of the composite structural parts, and it is difficult to form the structure-function integration.

With the continuous improvement of the basic theory, preparation process and industrial application technology of nanomaterials, nanomaterials with excellent electrical and thermal conductivity, such as silver nanowires, carbon nanotubes and graphene, have attracted more and more attention. Among them, carbon nanotubes have the advantages of light weight, large aspect ratio, stable chemical properties, excellent mechanical properties, electrical and thermal conductivity, and can withstand high current densities. It is a high-performance conductive modified nanomaterial.

At present, nanomaterials such as carbon nanotubes can be introduced into resin-based composites in the following ways:

(1) Disperse the carbon nanotubes into the liquid matrix resin, and then use the liquid molding technology to prepare the fiber composite material. In the molding process, the resin and fiber are combined by impregnation, the complex percolation of the resin mixed with carbon nanotube fillers in the multi-scale porous medium, the impregnation of the fiber, the chemical rheology and curing reaction of the resin are all important to the final It has a significant impact on the performance of the composite material, thus increasing the difficulty, complexity and uncontrollable factors of the liquid molding process. In addition, expensive carbon nanotubes are added throughout the composite structure, resulting in a significant increase in material costs.

(2) Attach carbon nanotubes to the surface of dry reinforcing fiber bundles or fiber fabrics by physical or chemical methods, and then form composites with liquid resins, or directly attach to the surface of fiber/resin prepregs and then laminate Composite materials were prepared by hot pressing. The fundamental defect of this process method is: for the former, the electrical and thermal conductivity modification only occurs on the interface between the fiber bundle and the surrounding resin or the interface between the fiber fabric and the surrounding resin, and the resin between the fiber bundles or between the fiber fabrics is relatively rich. In the pooled area, the conductivity of the resin cannot be improved, resulting in the inability to establish an effective conductive network in the thickness direction of the laminate; for the latter, the modification of electrical and thermal conductivity only occurs on the lamination interface of two adjacent prepregs, while carbon It is difficult for nanotubes to enter the resin-rich area inside each layer of prepreg, and it cannot improve the conductivity of the resin inside each layer of prepreg, so it cannot establish an effective conductive network in the thickness direction of the layup. In addition, the addition of expensive carbon nanotubes in each interlaminar region of the entire composite structure results in a significant increase in material cost.

In order to ensure the safety of advanced resin-based composite materials in aircraft and other aerospace vehicles, in the case of lightning strikes, the current can be quickly guided away in the surface area of the controllable thickness of the composite material structure without damaging the composite material. Mechanical properties, and can have significant advantages in manufacturing cost control, process technology implementation, etc., invented an advanced resin-based composite material with a lightning-resistant surface functional layer and its overall molding process.

Invention content:

In order to solve the above-mentioned lightning strike damage problem of advanced resin-based composite materials at low cost, the present invention designs a carbon fiber reinforced resin-based composite material with a lightning-resistant surface functional layer and its integral molding process. The surface functional layer realizes three-dimensional conduction The overlapping of the network can quickly guide the lightning current in the surface area of the controllable thickness of the composite material structure without damaging the mechanical properties of the composite material. At the same time, the functional layer can well fit the surface of complex structural parts, avoiding the problems of poor interface strength between metal mesh and composite materials and difficulty in profiling in traditional technologies.

In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:

The invention provides an advanced resin-based composite material with a lightning-resistant surface functional layer, which is prepared according to the following steps:

(1) Preparation of functional resin: Add polyvinylpyrrolidone powder into liquid resin, stir at constant temperature for 1-2 hours, then add conductive modified particles, stir at constant temperature for 2-4 hours, and then ultrasonically treat for 4-6 hours to obtain a uniformly mixed functional resin ; The mass ratio of the polyvinylpyrrolidone to the liquid resin is 1-10:1000, and the mass ratio of the conductive modified particles to the liquid resin is 1-10:1000;

(2) Cut the prepreg layer by layer and lay it in the mold sequentially, and perform pre-compaction molding in a hot press to obtain a pre-compaction prepreg, as shown in Figure 1;

(3) Cover one or several layers of dry carbon fiber fabrics on the pre-compacted prepreg obtained in step (2), and close the molds;

(4) Adding a curing agent to the functional resin prepared in step (1), the weight ratio of the curing agent to the functional resin is 3 to 8:1000;

(5) Inject the functional resin with curing agent added in step (4) into the sealed mold cavity through the glue injection system, and fully impregnate the dry carbon fiber to obtain the fiber fabric impregnated with the functional resin. The glue content of each layer accounts for the total amount of the layer. 30-40% of the mass;

(6) In the mold, the prepreg that has been pre-compacted in step (2) and the fiber fabric impregnated with functional resin obtained in step (5) are hot-pressed together to make the two parts of the material co-cure to achieve the overall forming;

(7) Open the mold to obtain a fiber-reinforced resin-based composite material with a lightning-resistant surface functional layer.

In step (1), the constant temperature stirring and ultrasonic treatment process conditions are: mechanical stirring in a constant temperature water bath at 60° C. to 80° C., and the ultrasonic frequency is 120 kHz.

In step (1), the conductive modified particles are single-walled or multi-walled carbon nanotubes, nickel-plated carbon nanotubes, or any surface-modified carbon nanotubes, graphene, silver nanowires, carbon nanotubes and Covalently bound products of graphene.

In step (2), the process conditions for pre-compaction molding in the hot press are to perform pre-compaction molding at a temperature of 65° C. to 85° C. and a pressure of 0.1 to 0.25 Mpa for 15 to 30 minutes to obtain pre-compaction molding Prepreg.

In step (2), the single-layer thickness of the pre-compacted prepreg is 0.1-0.2 mm.

In step (3), the thickness of the dry carbon fiber fabric is 0.2-0.4 mm, and the surface functional layer is formed by laying multiple layers of the dry carbon fiber fabric. 1/8 to 1/4 of the total thickness of the prepreg.

In step (4), the curing agent is diethylenetriamine.

In step (6), the hot-pressing process is firstly hot-pressing at 65° C.-85° C. for 20-40 minutes, and then hot-pressing at 120° C.-135° C. for 1 hour; the pressure is 0.1-0.3 MPa.

A method for preparing an advanced resin-based composite material with a lightning-resistant surface functional layer. In addition to the above-mentioned glue injection technology after mold closing, the glue coating technology before mold closing can also be used, including the following steps:

(1) Preparation of functional resin: Add polyvinylpyrrolidone powder into liquid resin, stir at constant temperature for 1-2 hours, then add conductive modified particles, stir at constant temperature for 2-4 hours, and then ultrasonically treat for 4-6 hours to obtain a uniformly mixed functional resin ; The mass ratio of the polyvinylpyrrolidone to the liquid resin is 1-10:1000, and the mass ratio of the conductive modified particles to the liquid resin is 1-10:1000;

(2) Cutting the prepreg layer by layer and sequentially laying it in the mold, and pre-compacting it in a hot press to obtain a pre-compacted prepreg;

(3) Adding a curing agent to the functional resin prepared in step (1), the weight ratio of the curing agent to the functional resin is 3 to 8:1000;

(4) Lay one or several layers of carbon fiber fabrics on the pre-compacted prepreg obtained in step (2), close the molds, and heat-press and solidify; The functional resin prepared by step (3) was coated on the surface before;

(5) Open the mold to obtain a fiber-reinforced resin-based composite material with a lightning-resistant surface functional layer.

The overall molding process of advanced resin-based composite materials with lightning-resistant surface functional layers proposed by the present invention is to cut the prepregs layer by layer according to the shape, size and mechanical properties of the composite material structural parts, and lay them sequentially in the mold. The cut layers of prepreg are then pre-compacted into shape. On the basis of initially forming the main body shape of the composite material structure, one or several layers of dry fiber fabrics are laid on the pre-compacted prepreg. Inject the prepared functional resin system into the sealed mold cavity, impregnate the fiber fabric in the mold cavity, or coat the liquid functional resin system on the surface of each layer of dry fiber fabric to initially form a three-dimensional conductive functional layer. In the mold, the prepreg that has been pre-compacted and the conductive functional layer are hot-pressed together, so that the two parts of the material are co-cured to achieve integral molding. Finally, the mold is opened to obtain a fiber-reinforced resin-based composite material structure with a lightning-resistant surface functional layer.

Figure 2 shows the carbon fiber reinforced resin matrix composite flat piece (a) with a conductive functional layer modified by nickel-plated carbon nanotubes and the flat piece (b) without surface functional modification after the same artificially simulated lightning current Ultrasound C-scan image after impact. It can be seen from the comparison pictures of the ultrasonic C-scan that the surface functional layer significantly reduces the damage area in the plane of the composite material.

Figure 3 shows the comparison of ultrasonic B-scan images of (a) and (b) the central cross-section of the plate. It can be seen from the comparison pictures of the ultrasonic B-scan that the surface functional layer can play a good role in surface diffusion on the surface of the plate, avoiding the lightning current from entering the inside of the plate, and significantly reducing the damage in the thickness direction of the composite material .

The beneficial effects of the present invention are:

1. Using liquid molding technology coupled with prepreg molding technology to prepare composite material structural parts with lightning-resistant surface functional layers, it is convenient to combine and adjust the original mature liquid molding technology and prepreg molding technology The overall molding of the structure-function integrated composite material can be realized, the implementability is strong, no new equipment and moulds are needed, and the preparation cost is low.

2. The anti-lightning functional layer is constructed in the surface area of the composite material structure with controllable thickness, which effectively saves the amount of expensive conductive modified nanomaterials, and has a special advantage in material cost.

3. More importantly, the material and process technology have realized the three-dimensional conductive and thermal conduction enhancement modification of the conductive functional layer, that is, a current conduction network can be formed not only in the layer but also in the thickness direction of the layer, which significantly improves the performance of the conductive layer. Anti-lightning effect of composite structural parts.

Description of drawings

Fig. 1 is a schematic diagram of a mold and a process of an embodiment of the present invention.

Among them, 1. Upper mold, 2. Sealing ring, 3. Lower mold, 4. Prepreg that has been pre-compacted, 5. Glue injection channel, 6. Dry fiber fabric, 7. With lightning-resistant surface function layers of composite structures.

Figure 2 shows the carbon fiber reinforced resin matrix composite flat piece (a) with a conductive functional layer modified by nickel-plated carbon nanotubes and the flat piece (b) without surface functional modification hit by the same artificial simulated lightning current Post-ultrasound C-scan.

Fig. 3 is a carbon fiber reinforced resin matrix composite flat piece (a) with a conductive functional layer modified by nickel-plated carbon nanotubes and a flat piece (b) without surface functional modification hit by the same artificially simulated lightning current Ultrasound B-scan contrast image of the central cross-section afterward.

detailed description

The present invention will be further elaborated below in conjunction with accompanying drawing 1 . It should be noted that the following description is only for explaining the present invention, not limiting its content.

Example 1:

(1) In a 250ml single-necked round bottom flask equipped with a stirrer, add 0.1g of dry PVP powder and 100ml of liquid epoxy resin, heat and stir in a water bath at 60°C for 1h, then add 0.1g of dry nickel-plated Carbon nanotubes, heated in a water bath at 60°C and stirred for 2h. After 120kHz ultrasonic treatment for 4h. The epoxy resin added with multi-walled carbon nanotubes mixed uniformly is obtained.

(2) Cut the prepreg into a size of 150mm*100mm and lay up 29 layers layer by layer in the mold.

Set the temperature of the hot press to 65° C., the pressure to 0.1 MPa, and pre-compact molding for 15 minutes to obtain a pre-compact prepreg.

(3) Lay a layer of unidirectional carbon fiber fabric with a size of 150mm*100mm and a thickness of 0.3mm on the upper surface of the pre-compacted molded body, and close the mold.

In this embodiment, the thickness of the surface functional layer accounts for 1/8 of the total thickness.

(4) Add 5 g of curing agent diethylenetriamine to the functional resin prepared in step (1), and stir evenly.

(5) The prepared resin is injected into the sealed mold cavity through the injection system, and the dry carbon fiber is fully impregnated. Or before step (3) mold closing, the dry carbon fiber fabric surface is coated with liquid functional resin and then mold closing. The glue content of each layer is controlled at 30%.

(6) The prepreg that has been pre-compacted and formed in the mold is hot-pressed together with the conductive functional layer, so that the two parts of the material are co-cured to achieve integral molding. The hot-pressing process adopted is firstly hot-pressing at 65° C. for 20 minutes, and then hot-pressing at 120° C. for 1 hour; the pressure is 0.1 MPa.

(7) Die opening to obtain a fiber-reinforced resin-based composite material structural member with a lightning-resistant surface functional layer.

Example 2:

(1) In a 250ml single-neck round bottom flask equipped with a stirrer, add 0.1g of dry PVP powder and 100ml of liquid epoxy resin, heat and stir in a water bath at 70°C for 1h, then add 0.1g of silver nanowires, Heated and stirred in a water bath at 70 °C for 2 h. After 120kHz ultrasonic treatment for 6h. The epoxy resin added with multi-walled carbon nanotubes mixed uniformly is obtained.

(2) Cut the prepreg into a size of 150mm*100mm and lay up 29 layers layer by layer in the mold.

Set the temperature of the hot press to 75° C., the pressure to 0.15 MPa, and pre-compact molding for 20 minutes to obtain a pre-compact prepreg.

(3) Lay a layer of unidirectional carbon fiber fabric with a size of 150mm*100mm and a thickness of 0.3mm on the upper surface of the pre-compacted molded body, and close the mold.

In this embodiment, the thickness of the surface functional layer accounts for 1/8 of the total thickness.

(4) Add 5 g of curing agent diethylenetriamine to the functional resin prepared in step (1), and stir evenly.

(5) The prepared resin is injected into the sealed mold cavity through the injection system, and the dry carbon fiber is fully impregnated. Or before step (3) mold closing, the dry carbon fiber fabric surface is coated with liquid functional resin and then mold closing. The glue content of each layer is controlled at 30%.

(6) The prepreg that has been pre-compacted and formed in the mold is hot-pressed together with the conductive functional layer, so that the two parts of the material are co-cured to achieve integral molding. The hot-pressing process adopted is firstly hot-pressing at 70°C for 30 minutes, and then hot-pressing at 125°C for 1 hour; the pressure is 0.2Mpa.

(7) Die opening to obtain a fiber-reinforced resin-based composite material structural member with a lightning-resistant surface functional layer.

Example 3:

(1) In a 250ml single-neck round bottom flask equipped with a stirrer, add 0.1g of dry PVP powder and 100ml of liquid epoxy resin, heat and stir in a water bath at 80°C for 2h, then add 0.1g of multi-walled carbon nano tube, heated in a water bath at 80 °C and stirred for 4 h. After 120kHz ultrasonic treatment for 6h. The epoxy resin added with multi-walled carbon nanotubes mixed uniformly is obtained.

(2) Cut the prepreg into a size of 150mm*100mm and lay up 29 layers layer by layer in the mold.

Set the temperature of the hot press to 85° C., the pressure to 0.25 MPa, and pre-compact molding for 30 minutes to obtain a pre-compact prepreg.

(3) Lay a layer of unidirectional carbon fiber fabric with a size of 150mm*100mm and a thickness of 0.3mm on the upper surface of the pre-compacted molded body, and close the mold.

In this embodiment, the thickness of the surface functional layer accounts for 1/8 of the total thickness.

(4) Add 5 g of curing agent diethylenetriamine to the functional resin prepared in step (1), and stir evenly.

(5) The prepared resin is injected into the sealed mold cavity through the injection system, and the dry carbon fiber is fully impregnated. Or before step (3) mold closing, the dry carbon fiber fabric surface is coated with liquid functional resin and then mold closing. The glue content of each layer is controlled at 30%.

(6) The prepreg that has been pre-compacted and formed in the mold is hot-pressed together with the conductive functional layer, so that the two parts of the material are co-cured to achieve integral molding. The hot-pressing process adopted is firstly hot-pressing at 85° C. for 40 minutes, and then hot-pressing at 135° C. for 1 hour; the pressure is 0.3 MPa.

(7) Die opening to obtain a fiber-reinforced resin-based composite material structural member with a lightning-resistant surface functional layer.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (10)

1. with an Advanced Resin-based Composites for anti-lightning surface functional layer, it is characterized in that, prepare as follows:

(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;

(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping;

(3) one deck or several layers of dry state carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2);

(4) add curing agent in the functional resin prepared in step (1), the weight ratio of curing agent and described functional resin is 3 ~ 8:1000;

(5) functional resin adding curing agent in step (4) is injected the die cavity sealed by injection system, abundant dipping dry state carbon fiber, obtain the fabric after functional resin dipping, every layer of glue content accounts for 30 ~ 40% of this layer of gross mass;

(6) hot-forming together with the fabric after in a mold the prepreg that in step (2), pre-compacted is shaping being flooded with the functional resin obtained in step (5), make two sections of material co-curing, realize global formation;

(7) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.

2. with a preparation method for the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, comprise the steps:

(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;

(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping;

(3) one deck or several layers of dry state carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2);

(4) adding percentage by weight in the functional resin prepared in step (1) is 0.3 ~ 0.8% curing agent;

(5) functional resin adding curing agent in step (4) is injected the die cavity sealed by injection system, abundant dipping dry state carbon fiber, obtain the fabric after functional resin dipping, every layer of glue content accounts for 30 ~ 40% of this layer of gross mass;

(6) hot-forming together with the fabric after in a mold the prepreg that in step (2), pre-compacted is shaping being flooded with the functional resin obtained in step (5), make two sections of material co-curing, realize global formation;

(7) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.

3. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (1), described constant temperature stirs and ultrasonic processing technique condition is: mechanical agitation in water bath with thermostatic control at 60 DEG C ~ 80 DEG C, supersonic frequency is 120kHz.

4. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (1), described conductive modified particle is the covalent bond product of the CNT of single wall or multi-walled carbon nano-tubes, nickel-plating carbon nanotube or arbitrary surface modification, Graphene, nano silver wire, CNT and Graphene.

5. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (2), carry out the shaping process conditions of pre-compacted in described hot press for carry out the shaping 15 ~ 30min of pre-compacted under temperature 65 DEG C ~ 85 DEG C, pressure 0.1 ~ 0.25Mpa, obtain the prepreg that pre-compacted is shaping.

6., as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (2), the thickness in monolayer of the prepreg that described pre-compacted is shaping is 0.1 ~ 0.2mm.

7. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (3), the thickness of described dry state carbon fibre fabric is 0.2 ~ 0.4mm, spread to cover by the dry state carbon fibre fabric described in multilayer and form surface functional layer, function of surface layer thickness accounts for 1/8 ~ 1/4 of the shaping prepreg gross thickness of described pre-compacted.

8., as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (4), described curing agent is diethylenetriamines.

9. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (6), described heat pressing process is first at 65 DEG C ~ 85 DEG C hot pressing 20 ~ 40min, then 120 DEG C ~ 135 DEG C hot pressing 1h; Pressure is 0.1 ~ 0.3Mpa.

10. with a preparation method for the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, gluing technology before employing matched moulds, comprises the steps:

(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;

(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping;

(3) add curing agent in the functional resin prepared in step (1), the weight ratio of curing agent and described functional resin is 3 ~ 8:1000;

(4) one deck or several layers of carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2), and hot-press solidifying is shaping; Described one deck or several layers of carbon fibre fabric are coated with functional resin prepared by step (3) at the front surface that paving is covered;

(5) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.