阅读说明：本技术 一种连续电泳沉积改性碳纤维增强的多基体复合材料及其制备方法 (Continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material and preparation method thereof ) 是由 陈照峰 廖家豪 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种连续电泳沉积改性碳纤维增强的多基体复合材料及其制备方法,由30~55%体积分数碳纤维、3~25%体积分数无机粉末和20~67%体积分数基体组成,其特征在于无机粉末包裹在碳纤维丝表面或镶嵌在碳纤维束中,从纤维丝到纤维束表面浓度逐渐下降。其制备方法为：(1)将碳纤维进行预处理；(2)配制无机粉末浆料；(3)将预处理好的碳纤维展宽形成碳纤维带,然后电泳沉积无机粉末；(4)将沉积好的碳纤维制成预成型体；(5)在预成型体中复合基体。本发明通过对碳纤维展宽处理保证了无机粉末在碳纤维丝表面的均匀沉积,显著提高了沉积效率,增加了复合材料多功能特性,显著的提高了复合材料的性能与稳定性。(The invention discloses a continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material and a preparation method thereof, wherein the composite material comprises 30-55% of volume fraction carbon fiber, 3-25% of volume fraction inorganic powder and 20-67% of volume fraction matrix, and is characterized in that the inorganic powder is wrapped on the surface of carbon fiber yarn or embedded in a carbon fiber bundle, and the concentration of the inorganic powder gradually decreases from the carbon fiber yarn to the surface of the carbon fiber bundle. The preparation method comprises the following steps: (1) pretreating carbon fibers; (2) preparing inorganic powder slurry; (3) widening the pretreated carbon fibers to form a carbon fiber belt, and then carrying out electrophoretic deposition on inorganic powder; (4) preparing the deposited carbon fibers into a preformed body; (5) the matrix is compounded in a preform. The invention ensures the uniform deposition of inorganic powder on the surface of the carbon fiber by widening the carbon fiber, obviously improves the deposition efficiency, increases the multifunctional characteristic of the composite material and obviously improves the performance and the stability of the composite material.)

1. A continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material is composed of 30-55% of volume fraction carbon fiber, 3-25% of volume fraction inorganic powder and 20-67% of volume fraction matrix, and is characterized in that the inorganic powder is wrapped on the surface of carbon fiber yarn or embedded in a carbon fiber bundle, and the concentration gradually decreases from the carbon fiber yarn to the surface of the carbon fiber bundle; the inorganic powder is 1-3 of carbon powder, graphene powder, alumina powder, zirconia powder, silica powder, silicon carbide powder, zirconium carbide powder, boron nitride powder and silicon nitride powder, and the particle size of the powder is 20-1000 nm; the matrix is 1-3 of carbon, silicon, aluminum alloy, copper alloy, nickel alloy, ceramic and organic resin.

2. The method of preparing a continuous electrophoretic deposition modified carbon fiber reinforced multimatrix composite as claimed in claim 1, characterized by comprising the following sequential steps:

(1) carrying out degumming treatment and plasma surface treatment on the carbon fiber;

(2) adding a dispersant to prepare inorganic powder slurry in a deposition tank by taking deionized water as a solvent and inorganic powder as a solid phase, adding acid and alkali according to the inorganic powder to adjust the Zeta potential of the slurry, and then introducing a layer of organic release agent into the deposition tank;

(3) widening the pretreated carbon fiber bundle by adopting an ultrasonic fiber expansion method to form a carbon fiber belt, wherein the width of the carbon fiber belt is 10-1000 mm, then drawing the carbon fiber belt into a deposition groove through a sliding roller on one side of the deposition groove, drawing the carbon fiber belt into the deposition groove in a manner that the carbon fiber belt penetrates through a transverse roller in the deposition groove and is parallel to the bottom of the deposition groove to the other side of the deposition groove, drawing the carbon fiber belt upwards in a manner that the carbon fiber belt penetrates through the bottom of the deposition groove and is vertical to the bottom of the deposition groove through the transverse roller on the other side of the bottom of the deposition groove, finally drawing the carbon fiber belt out of the deposition groove through the sliding rollers, wherein metal plates are respectively arranged parallel to the upper part and the lower;

(4) winding the carbon fiber tape deposited with the inorganic powder in the step (3) on a mold to form a preformed body, drying and curing, or layering the carbon fiber tape deposited with the inorganic powder in the step (3) to form the preformed body, drying and curing, or bundling the carbon fiber tape deposited with the inorganic powder in the step (3), wrapping the carbon fiber after being bundled by a flexible protective sleeve, weaving to form the preformed body, and drying and curing;

(5) densifying the pre-formed body dried and solidified in the step (4) by using a chemical vapor deposition method or a precursor impregnation cracking method to obtain a continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material;

(6) infiltrating alloy into the pre-formed body dried and solidified in the step (4) or the mixed composite material in the step (5) by using a vacuum pressure melting infiltration method to obtain the multi-matrix composite material enhanced by the continuous electrophoretic deposition modified carbon fiber;

(7) and (3) infiltrating organic polymer resin into the pre-formed body dried and cured in the step (4) or the mixed composite material in the step (5) by using a resin transfer molding compound method to obtain the multi-matrix composite material reinforced by the continuous electrophoretic deposition modified carbon fiber.

3. The method for preparing the multi-matrix composite reinforced by the continuous electrophoretic deposition modified carbon fiber according to claim 2, wherein the organic release agent introduced in the step (2) is n-hexane liquid, the n-hexane solution is positioned on the upper layer of the inorganic powder slurry, the thickness of the n-hexane solution is 1-10mm, and when the fiber tape is pulled out of the slurry, n-hexane is adsorbed on the outer surface of the fiber.

4. The method as claimed in claim 2, wherein the metal plates in step (3) are placed in a deposition bath, the distance between the upper and lower metal plates and the fiber belt is 1-5cm, and the intersection angle between the metal plate plane and the fiber belt plane is 0-10 °.

5. The method as claimed in claim 2, wherein the metal plate is connected to an electrode potential opposite to the zeta potential of the inorganic powder slurry in step (3), and the voltage between the metal plate and the sliding roller and the carbon fiber belt is 10-100V.

6. The method for preparing a multi-matrix composite reinforced with carbon fibers through electrophoretic deposition modification in series as claimed in claim 2, wherein the deposition time of the fiber belt in the deposition tank in step (3) is 1-30min, and the speed of the fiber belt is 0.1-10 m/h.

7. The method for preparing the multi-matrix composite reinforced by the continuous electrophoretic deposition modified carbon fibers according to claim 2, wherein in the step (4), release paper covers the upper surface and the lower surface of the carbon fiber tape deposited with the inorganic powder in the step (3) to directly prepare the fiber tape prepreg.

Technical Field

The invention relates to a composite material and a preparation method thereof, in particular to a multi-matrix composite material reinforced by continuous electrophoretic deposition modified carbon fibers and a preparation method thereof.

Background

The continuous carbon fiber reinforced composite material has the excellent characteristics of low density, high specific strength, high specific modulus, good impact resistance and the like, and is widely applied to the fields of aviation, aerospace, traffic, chemical engineering and the like. At present, the common continuous carbon fiber reinforced composite materials mainly comprise three types of continuous carbon fiber reinforced ceramic matrix composite materials, continuous carbon fiber reinforced resin matrix composite materials and continuous carbon fiber reinforced metal matrix composite materials.

For the continuous carbon fiber reinforced ceramic matrix composite, in order to increase the fracture toughness of the composite and protect the carbon fibers in the process of preparing the ceramic matrix, the carbon fibers need to be subjected to surface interface treatment so as to improve the bonding strength of the carbon fibers and the ceramic matrix and reduce the damage of the carbon fibers in the preparation process of the ceramic matrix. The interface phases of the continuous carbon fiber reinforced ceramic matrix composite are mainly pyrolytic carbon, silicon carbide and hexagonal boron nitride, the interface phases are generally prepared on the surface of carbon fibers by a chemical vapor deposition process, and although the interface phases can play a role in transferring load, deflecting cracks, buffering thermal stress and the like, the preparation of the interface phases obviously reduces the flexibility and strength of the carbon fibers, so that the carbon fibers are difficult to fully play a reinforcing role, and the actual mechanical property of the composite is far lower than the theoretical expected value.

The nano ceramic particles can be used as a second phase reinforced continuous carbon fiber reinforced composite material due to the excellent characteristics of the nano ceramic particles, and because of the nano scale effect, the nano ceramic particles can effectively deflect cracks when being used as an interface phase of carbon fibers, so that a large amount of fracture energy is consumed, and the fracture toughness of the composite material is improved. Meanwhile, because metallurgical sintering bonding does not exist between particles, the flexibility of the carbon fiber can be ensured. In addition, the nano ceramic particles can be prepared on the surface of the carbon fiber in a low-temperature environment, so that the strength of the carbon fiber is prevented from being reduced, and the reinforcing effect of the carbon fiber can be effectively exerted.

For the continuous carbon fiber reinforced resin matrix composite material, the strength and flexibility of the carbon fiber are not reduced by the resin matrix relative to the ceramic matrix, so that the room-temperature mechanical property of the composite material is excellent. However, the resin matrix has poor heat resistance and heat conductivity, so that the continuous carbon fiber reinforced resin matrix composite has insufficient temperature resistance and low heat conductivity, and the application range of the continuous carbon fiber reinforced resin matrix composite is limited. The nano ceramic particles have excellent high temperature resistance and high heat conductivity coefficient, and when the nano ceramic particles are used as a second phase to be reinforced in the continuous carbon fiber reinforced resin matrix composite, the temperature resistance and the heat conductivity of the composite can be obviously improved.

Chinese patent No. CN104150939B discloses a method for preparing a Carbon Nanotube (CNTs) reinforced ceramic matrix composite by electrophoretic deposition. According to the patent, CNTs are deposited on 2D carbon fiber cloth deposited with a pyrolytic carbon layer by an electrophoretic deposition method, and then a silicon carbide (SiC) matrix is deposited by a chemical vapor deposition method, so that the electrophoretic deposition CNTs reinforced ceramic matrix composite is prepared. The method can reduce the damage of high temperature and catalyst to the reinforcement, and can uniformly disperse CNTs on the prefabricated fiber, fully play the micron and nanometer synergistic reinforcement function, and improve the toughness of the C/SiC composite material.

The Chinese invention patent with application publication number CN110453266A discloses a method for preparing a high-performance composite material by electrophoretic deposition of polymer micro-nano particles on the surface of carbon fibers, which comprises the following steps of firstly, treating a Carbon Fiber (CF) substrate by Dopamine (DA): DA is deposited and polymerized on the CF surface to form polydopamine so as to improve the adhesion of the polymer micro-nano particles to the CF surface; and then, depositing polymer micro-nano particles with different morphologies, particle sizes, compositions and different functional groups on the surface of the CF through electrophoresis so as to improve the interface performance of the CF and the polymer substrate. According to the invention, polymer micro-nano particles with different compositions, shapes, surface functional groups and appearances are deposited and adsorbed on the surface of the polydopamine modified CF by using an electrophoresis method, and the interaction of physical mechanical interlocking, chemical bond connection and the like between the CF and a polymer substrate is improved, so that the interface adhesion strength is improved.

The application publication number of Chinese patent application CN108286187A discloses a preparation method of graphene oxide modified carbon fibers initiated by silane coupling agent assisted electrophoretic deposition, the carbon fibers after desizing are put into an aqueous solution containing Aminopropyltriethoxysilane (APTES) and ethanol for hydrolysis amination pretreatment to obtain carbon fibers after silane coupling agent treatment, the carbon fibers after silane coupling agent treatment are connected with a power supply anode, a copper sheet is connected with a power supply cathode, and the graphene oxide aqueous solution is used as electrophoretic deposition liquid for electrophoretic deposition to obtain the graphene oxide modified carbon fibers initiated by silane coupling agent assisted electrophoretic deposition, so that the interface shear strength of a carbon fiber reinforced resin matrix composite material can be effectively improved.

U.S. patent No. 5580835 discloses a method for preparing ceramic fibers by electrophoretically depositing ceramic particles on the surface of continuous fibers by electrophoretically depositing a thick oxide or mixed oxide ceramic coating on the surface of continuous fibers to form a smooth, dense and consistent ceramic fiber, which simplifies the process steps and reduces the cost.

The carbon fiber surface modification method is mainly characterized in that a layer of carbon nano tubes, graphene or other micro-nano particles is deposited on the surface of carbon fibers through an electrophoretic deposition process, the carbon nano tubes, the graphene or other micro-nano particles are woven into a cloth or fiber tows are directly placed into electrophoretic deposition equipment for deposition, the fiber tows are not subjected to stretching treatment, a layer of reinforcing phase interface is easily deposited on the surface of the carbon fiber tows, the deposition efficiency is low, reinforcing phases cannot be uniformly and effectively deposited on the surface of each carbon fiber, and the performance of a composite material is reduced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a multi-matrix composite material reinforced by continuous electrophoretic deposition modified carbon fibers and a preparation method thereof, wherein firstly, carbon fiber tows are subjected to stretching treatment to increase the contact area between the carbon fiber tows and ceramic particle slurry; and then, the continuous electrophoretic deposition of the carbon fibers in the electrophoretic deposition equipment is realized through a traction device, so that the efficiency of electrophoretic deposition of the ceramic particles on the carbon fibers is improved, and the uniform deposition of the ceramic particles on the surface of the carbon fiber yarn is realized.

The invention relates to a continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material which is composed of 30-55% of volume fraction carbon fiber, 3-25% of volume fraction inorganic powder and 20-67% of volume fraction matrix, and is characterized in that the inorganic powder is wrapped on the surface of carbon fiber yarn or embedded in a carbon fiber bundle, and the concentration gradually decreases from the carbon fiber yarn to the surface of the carbon fiber bundle; the inorganic powder is 1-3 of carbon powder, graphene powder, alumina powder, zirconia powder, silica powder, silicon carbide powder, zirconium carbide powder, boron nitride powder and silicon nitride powder, and the particle size of the powder is 20-1000 nm; the matrix is 1-3 of carbon, silicon, aluminum alloy, copper alloy, nickel alloy, ceramic and organic resin.

The invention also discloses a preparation method of the continuous carbon fiber reinforced hybrid composite material, which comprises the following preparation sequence:

(1) carrying out degumming treatment and plasma surface treatment on the carbon fiber;

(2) adding a dispersant to prepare inorganic powder slurry in a deposition tank by taking deionized water as a solvent and inorganic powder as a solid phase, adding acid and alkali according to the inorganic powder to adjust the Zeta potential of the slurry, and then introducing a layer of organic release agent into the deposition tank;

(3) widening the pretreated carbon fiber bundle by adopting an ultrasonic fiber expansion method to form a carbon fiber belt, wherein the width of the carbon fiber belt is 10-1000 mm, then drawing the carbon fiber belt into a deposition groove through a sliding roller on one side of the deposition groove, drawing the carbon fiber belt into the deposition groove in a manner that the carbon fiber belt penetrates through a transverse roller in the deposition groove and is parallel to the bottom of the deposition groove to the other side of the deposition groove, drawing the carbon fiber belt upwards in a manner that the carbon fiber belt penetrates through the bottom of the deposition groove and is vertical to the bottom of the deposition groove through the transverse roller on the other side of the bottom of the deposition groove, finally drawing the carbon fiber belt out of the deposition groove through the sliding rollers, wherein metal plates are respectively arranged parallel to the upper part and the lower;

(4) winding the carbon fiber tape deposited with the inorganic powder in the step (3) on a mold to form a preformed body, drying and curing, or layering the carbon fiber tape deposited with the inorganic powder in the step (3) to form the preformed body, drying and curing, or bundling the carbon fiber tape deposited with the inorganic powder in the step (3), wrapping the carbon fiber after being bundled by a flexible protective sleeve, weaving to form the preformed body, and drying and curing;

(5) densifying the pre-formed body dried and solidified in the step (4) by using a chemical vapor deposition method or a precursor impregnation cracking method to obtain a continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material;

(6) infiltrating alloy into the pre-formed body dried and solidified in the step (4) or the mixed composite material in the step (5) by using a vacuum pressure melting infiltration method to obtain the multi-matrix composite material enhanced by the continuous electrophoretic deposition modified carbon fiber;

(7) and (3) infiltrating organic polymer resin into the pre-formed body dried and cured in the step (4) or the mixed composite material in the step (5) by using a resin transfer molding compound method to obtain the multi-matrix composite material reinforced by the continuous electrophoretic deposition modified carbon fiber.

The organic release agent introduced in the step (2) is n-hexane liquid, the n-hexane solution is located on the upper layer of the inorganic powder slurry, the thickness of the n-hexane solution is 1-10mm, and when the slurry is pulled out of the fiber tape, the n-hexane is adsorbed on the outer surface of the fiber.

The metal plates in the step (3) are positioned in the deposition groove, the distance between the upper metal plate and the lower metal plate and the fiber belt is 1-5cm respectively, and the extending and crossing included angle between the metal plate plane and the fiber belt plane is 0-10 degrees.

The electrode potential connected to the metal plate in the step (3) is opposite to the zeta potential of the inorganic powder slurry, and the voltage between the metal plate and the sliding roller and the voltage between the metal plate and the carbon fiber belt are 10-100V.

And (3) depositing the fiber belt in the deposition groove for 1-30min, wherein the speed of the fiber belt is 0.1-10 m/h.

And (4) covering release paper on the upper surface and the lower surface of the carbon fiber belt deposited with the inorganic powder in the step (3) to directly prepare the fiber belt prepreg.

The invention has the beneficial effects that: the sizing efficiency of the ceramic particles is increased, carbon fiber yarns deposited with the ceramic particles are not bonded with each other, the manufacturing efficiency of the composite material is improved, the multifunctional characteristic of the composite material is increased, the multi-matrix composite material is manufactured at low temperature, compared with the traditional method, the damage of high temperature to the carbon fibers is reduced, the fiber strength is ensured, and the application field of the composite material is widened.

Detailed Description

The invention will now be further described with reference to the examples:

example 1

A continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material is composed of 40% volume fraction carbon fiber, 5% volume fraction inorganic powder and 50% volume fraction matrix, and is characterized in that the inorganic powder is wrapped on the surface of carbon fiber yarn or embedded in a carbon fiber bundle, and the concentration gradually decreases from the carbon fiber yarn to the surface of the carbon fiber bundle; the inorganic powder is boron nitride powder, and the average particle size of the powder is 50 nm; the matrix is a silicon carbide matrix.

The continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material is prepared by the following steps in sequence:

(1) removing glue from the 1K carbon fiber bundle at 800 ℃ in a vacuum environment;

(2) carrying out micro-oxidation treatment on boron nitride powder, preparing uniformly dispersed boron nitride powder slurry, adding acid to adjust the Zeta potential of the slurry to-60 mV, injecting the slurry into a deposition tank, and introducing a layer of n-hexane liquid on the surface layer of the slurry, wherein the thickness of the n-hexane solution is 5 mm;

(3) broadening pretreated carbon fibers by adopting an ultrasonic fiber expanding method to form a carbon fiber belt with the width of 30mm, then drawing the carbon fiber belt into a deposition tank through a sliding roller on one side of the deposition tank, drawing the carbon fiber belt into the deposition tank in a manner that the carbon fiber belt passes through a transverse roller in the deposition tank and is parallel to the bottom of the tank to the other side of the tank, drawing the carbon fiber belt upwards through a transverse roller on the other side of the bottom of the tank and is perpendicular to the bottom of the tank, and finally drawing the carbon fiber belt out of the deposition tank through the sliding rollers, wherein in the process that the carbon fiber belt passes through the deposition tank, a metal plate is arranged above and below the fiber belt in a parallel manner, direct current is supplied to the sliding rollers and;

(4) bundling the carbon fiber tape in the deposition groove obtained in the step (3), wrapping the carbon fiber tape in the bundling process by using a flexible protective sleeve, weaving to form a three-dimensional four-way structure preform, and drying and curing;

(5) and (3) taking liquid polycarbosilane as a precursor, and performing silicon carbide substrate densification on the pre-formed body dried and cured in the step (4) by adopting a precursor impregnation cracking method, wherein the cracking temperature is 1200 ℃, and the impregnation-cracking cycle is performed for 12 periods, so that the multi-substrate composite material enhanced by the continuous electrophoretic deposition modified carbon fiber is obtained.

The composite material prepared in the above example had a density of 2.0g/cm³Room-temperature flexural strength of 567MPa, room-temperature tensile strength of 351MPa, and room-temperature fracture toughness of 27MPa · m^1/2。

Example 2

A continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material is composed of 45 volume percent of carbon fibers, 10 volume percent of inorganic powder and 40 volume percent of matrix, and is characterized in that the inorganic powder is wrapped on the surface of carbon fiber yarns or embedded in carbon fiber bundles, and the concentration is gradually reduced from the carbon fiber yarns to the surface of the carbon fiber bundles; the inorganic powder is alumina powder, and the average grain diameter of the powder is 80 nm; the substrate is an aluminum alloy substrate.

The continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material is prepared by the following steps in sequence:

(1) carrying out high-temperature inert atmosphere degumming treatment on the 3K carbon fiber;

(2) preparing uniformly dispersed alumina powder slurry, adding acid and alkali to adjust the Zeta potential of the slurry to +55mV, injecting the slurry into a deposition tank, and introducing a layer of n-hexane liquid on the surface layer of the slurry, wherein the thickness of the n-hexane solution is 3 mm;

(3) broadening pretreated carbon fibers by adopting an ultrasonic fiber expanding method to form a carbon fiber belt with the width of 100mm, then drawing the carbon fiber belt into a deposition tank through a sliding roller on one side of the deposition tank, drawing the carbon fiber belt into the deposition tank in a manner that the carbon fiber belt passes through a transverse roller in the deposition tank and is parallel to the bottom of the tank to the other side of the tank, drawing the carbon fiber belt upwards through a transverse roller on the other side of the bottom of the tank and is perpendicular to the bottom of the tank, and finally drawing the carbon fiber belt out of the deposition tank through the sliding rollers, wherein in the process that the carbon fiber belt passes through the deposition tank, a metal plate is arranged above and below the fiber belt in a parallel manner, direct current is supplied to the sliding rollers and;

(4) wrapping the upper surface and the lower surface of the carbon fiber belt of the deposition groove obtained in the step (3) by release paper to form a prepreg;

(5) performing unidirectional laying on the prepreg prepared in the step (4) to form a preformed body, then performing mould pressing, drying and curing;

(6) and (3) infiltrating aluminum alloy into the pre-formed body dried and solidified in the step (5) by using a vacuum pressure melting infiltration method, wherein the infiltration temperature is 700 ℃, and the infiltration pressure is 1.5MPa, so that the multi-matrix composite material enhanced by the continuous electrophoretic deposition modified carbon fiber is obtained.

The composite material prepared in the above example had a density of 2.3g/cm³Bending strength at room temperature of 625MPa, tensile strength at room temperature of 457MPa, and fracture toughness at room temperature of 32 MPa.m^1/2。

Example 3

A continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material is composed of 40% volume fraction carbon fiber, 15% volume fraction inorganic powder and 40% volume fraction matrix, and is characterized in that the inorganic powder is wrapped on the surface of carbon fiber yarn or embedded in a carbon fiber bundle, and the concentration gradually decreases from the carbon fiber yarn to the surface of the carbon fiber bundle; the inorganic powder is silicon carbide powder and silicon oxide powder, and the average particle size of the powder is 60 nm; the matrix is an epoxy resin matrix.

The continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite material is prepared by the following steps in sequence:

(1) carrying out degumming and surface plasma treatment on the 10K carbon fiber;

(2) preparing uniformly dispersed silicon carbide and silicon oxide powder slurry, adding acid and alkali to adjust the Zeta potential of the slurry to-62 mV, injecting the slurry into a deposition tank, and introducing a layer of n-hexane liquid on the surface layer of the slurry, wherein the thickness of the n-hexane solution is 10 mm;

(3) broadening pretreated carbon fibers by adopting an ultrasonic fiber expanding method to form a carbon fiber belt with the width of 500mm, then drawing the carbon fiber belt into a deposition tank through a sliding roller on one side of the deposition tank, drawing the carbon fiber belt into the deposition tank in a manner that the carbon fiber belt passes through a transverse roller in the deposition tank and is parallel to the bottom of the tank to the other side of the tank, drawing the carbon fiber belt upwards through a transverse roller on the other side of the bottom of the tank and is perpendicular to the bottom of the tank, and finally drawing the carbon fiber belt out of the deposition tank through the sliding rollers, wherein in the process that the carbon fiber belt passes through the deposition tank, a metal plate is respectively arranged above and below the fiber belt in a manner that the sliding rollers and the metal plates are electrified;

(4) wrapping the upper surface and the lower surface of the carbon fiber belt of the deposition groove obtained in the step (3) by release paper to form a prepreg;

(5) winding and molding the prepreg prepared in the step (4) into a preformed body, and then drying and curing;

(6) and (3) infiltrating an epoxy resin matrix into the pre-formed body dried and cured in the step (5) by using a resin transfer molding compound method to obtain the continuous electrophoresis deposition modified carbon fiber reinforced multi-matrix composite material.

The composite material prepared in the above example had a density of 1.8g/cm³The room temperature bending strength is 1056MPa, the longitudinal elastic modulus is 135GPa, the room temperature longitudinal tensile strength is 767MPa, and the room temperature interlayer thermal conductivity reaches 2.31W/(m.K).

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the protection of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.