Carbon fiber reinforced epoxy resin composite material and preparation method thereof

Abstract

The invention belongs to the technical field of high polymer materials, and discloses a carbon fiber reinforced epoxy resin composite material and a preparation method thereof. The method comprises the following steps: (1) impregnating carbon fibers in epoxy resin to obtain a carbon fiber prepreg tape; (2) covering the surface of the carbon fiber prepreg tape with a porous wear-resistant material, and carrying out vacuumizing and pressurized curing to obtain a carbon fiber reinforced epoxy resin composite material; wherein the porous wear-resistant material is prepared by laying wear-resistant particles on the surface of a polymer non-woven fabric, rolling and heating; the porous wear-resistant material has good affinity with epoxy resin, can be firmly combined with a carbon fiber reinforced epoxy resin composite material product only by virtue of redundant epoxy resin in the carbon fiber prepreg tape, and can replace an adhesive absorbing cloth in a traditional paving process; the porous wear-resistant material can effectively improve the wear resistance of a carbon fiber reinforced epoxy resin composite material product.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, and in particular to a carbon fiber reinforced epoxy resin composite material and a preparation method thereof. Background Art

[0002] Fiber-reinforced epoxy resin has excellent lightweight potential due to its high specific modulus, specific strength, insulation performance and process performance, and has replaced traditional metal materials in many fields. However, the friction coefficient of the epoxy resin matrix is ​​relatively high, the wear resistance is poor, and the brittleness is large, which limits its application in the field of wear resistance.

[0003] Prepreg tape laying is one of the main molding methods for fiber-reinforced epoxy resin products. Since the friction coefficient of the epoxy resin matrix is ​​relatively high and the wear resistance is poor, its application in the field of wear resistance is limited. When the epoxy resin on the surface is worn to a certain extent, the internal fibers are exposed and will be further worn, resulting in the destruction of their mechanical properties, reducing their service life, and even causing safety hazards in use. Therefore, it is necessary to perform functional wear-resistant treatment on carbon fiber composites.

[0004] Prior art improves the wear resistance of carbon fiber epoxy resin products by spraying paint or using metal protective sheets. However, these methods have disadvantages, such as spraying paint is easy to wear and need frequent repainting, and the metal protective sheet increases the weight of the product and affects the appearance.

[0005] Chinese patent CN106832779B discloses a wear-resistant epoxy resin composite material and its preparation method, which disperses 0.05-15% of flaky tungsten sulfide / graphene oxide nanocomposite in a resin matrix to effectively improve its wear resistance. However, this method involves surface treatment, ultrasonic dispersion, drying, vacuuming and other steps, and the overall process is complicated and lengthy, which is not suitable for mass production.

[0006] Chinese patent CN114015199B discloses a wear-resistant epoxy resin composite material and preparation method, adding 1-5% metal organic framework derived nickel silicate to the epoxy resin matrix, and reporting about 80% wear reduction. However, the metal organic framework derived nickel silicate itself is expensive, and is not easy to disperse in the resin matrix, easily clumps and precipitates, and is difficult to store.

[0007] Chinese patent CN113088162B discloses a wear-resistant epoxy resin coating and a preparation method thereof, wherein a wear-resistant coating is prepared, wherein the coating matrix is ​​epoxy resin and the dispersed phase is 3% of nano / micro titanium dioxide treated with KH550 coupling agent. However, since the coating contains both epoxy resin and curing agent, it cannot be stored for a long time.

[0008] It can be seen that the existing methods for improving carbon fiber epoxy resin products are mostly to change the composition of the resin (including adding inorganic wear-resistant fillers, resin modification, carbon fiber surface treatment, etc.) and use special coatings. The technology of resin modification changes the fluidity of the resin, which will inevitably change the production parameters in the production and processing flow of the prepreg tape; in addition, the filler often does not have good dispersion in the resin matrix and is prone to agglomeration and sedimentation over a long period of time. In addition, the coating has problems such as high cost, short life cycle, and heavy weight. For common polyurea coatings, the price per square meter is often more than 200 yuan, the thickness is about 2mm, and the surface density is about 2000g / m 2 , and often requires expensive large-scale spraying equipment, which makes construction inconvenient. Summary of the invention

[0009] In view of the above problems, the present invention provides a carbon fiber reinforced epoxy resin composite material and a preparation method thereof. The method of the present invention does not change the production or laying process of the fiber prepreg tape, nor does it change the processing parameters or raw material properties. Under the condition of convenient process, the wear resistance of the epoxy product can be effectively and economically improved.

[0010] In order to solve the above technical problems, the first aspect of the present invention provides a method for preparing a carbon fiber reinforced epoxy resin composite material, the method comprising: (1) impregnating carbon fiber in epoxy resin to obtain a carbon fiber prepreg tape; (2) covering the surface of the carbon fiber prepreg tape with a porous wear-resistant material, and performing vacuum and pressure curing to obtain a carbon fiber reinforced epoxy resin composite material;

[0011] The porous wear-resistant material is prepared by a method including laying wear-resistant particles on the surface of a polymer non-woven fabric and performing roller pressing and microwave heating.

[0012] In the present invention, there is no particular limitation on the conditions for vacuuming, and the vacuuming can satisfy the technical requirements in the art, for example, vacuuming to above -0.1 MPa.

[0013] According to some embodiments of the present invention, the polymer non-woven fabric is selected from at least one of high-density polyethylene non-woven fabric (HDPE), polypropylene non-woven fabric (PP), polyvinyl chloride non-woven fabric (PVC), polyethylene terephthalate non-woven fabric (PET), polyurethane non-woven fabric (PU), nylon non-woven fabric (PA), and aramid non-woven fabric; preferably, the polypropylene non-woven fabric is selected from at least one of homopolypropylene non-woven fabric, random copolymer polypropylene non-woven fabric, and block copolymer polypropylene non-woven fabric; further preferably, homopolypropylene non-woven fabric with a grade of S700, homopolypropylene non-woven fabric with a grade of V30S, or homopolypropylene non-woven fabric with a grade of Z30S;

[0014] And / or, the wear-resistant particles are selected from at least one of aluminum oxide, silicon oxide or silicon carbide; preferably, the wear-resistant particles are selected from aluminum oxide and / or silicon carbide; further preferably, the wear-resistant particles are selected from a combination of aluminum oxide and silicon carbide in a mass ratio of 7:2-5; further preferably, the wear-resistant particles are modified with a silane coupling agent or fiber-modified.

[0015] According to some embodiments of the present invention, the surface density of the polymer nonwoven fabric is 30 g / m 2 ~150g / m 2 ;

[0016] And / or, the porosity of the polymer nonwoven fabric is 60% to 85%;

[0017] And / or, the particle size distribution of the wear-resistant particles is D50=15±5 μm.

[0018] According to some embodiments of the present invention, the step of modifying the wear-resistant particles with a silane coupling agent comprises: placing the wear-resistant particles in a 30 vol% to 50 vol% ethanol aqueous solution, ultrasonically dispersing for 15 min to 30 min, and then performing a first drying; then placing the first dried wear-resistant particles in a 1% to 3% volume concentration, pH = 4-5 silane coupling agent aqueous solution, ultrasonically dispersing for 15 min to 30 min, and then performing a second drying to obtain the wear-resistant particles;

[0019] Preferably, the first drying conditions include: temperature of 80°C to 100°C and time of 2h to 4h;

[0020] And / or, the temperature of the second drying is 120° C. to 140° C., and the time is 2 h to 4 h.

[0021] In the present invention, there is no particular limitation on the type of silane coupling agent, and for example, KH550, KH551, KH560, A-151, etc. may be selected.

[0022] According to some embodiments of the present invention, the method of fiber-modifying the wear-resistant particles comprises:

[0023] (1) Wear-resistant particles, a healing agent and an auxiliary agent are mixed, and a first ball milling, a first drying and a sieving are performed to obtain a first mixed powder; wherein the mass ratio of the wear-resistant particles, the healing agent and the auxiliary agent is 70:5-6:1-3; the healing agent is a combination of titanium boride and boron carbide in a mass ratio of 1:1-2; the auxiliary agent is a combination of magnesium oxide, yttrium oxide and cerium fluoride in a mass ratio of 1:0.1-0.5:0.1-0.2; the diameter of the aluminum oxide nanofiber is 50nm-60nm, and the specific surface area is 300m 2 / g~500m 2 / g; the diameter of the cellulose nanofibers is 10nm to 30nm;

[0024] (2) mixing the alumina nanofibers with the first mixed powder obtained in step (1), performing a second ball milling, a second drying, and a sieving process to obtain a second mixed powder; wherein the mass ratio of the alumina nanofibers to the first mixed powder is 1-8:100; preferably, the particle size of the second mixed powder is 300-500 mesh; and / or, the conditions for the second ball milling include: a time of 8-12 hours; and / or, the conditions for the second drying include: a temperature of 100° C. to 150° C.; and a time of 24-36 hours;

[0025] (3) adding a cellulose nanofiber suspension to the second mixed powder obtained in step (2), granulating and pressing to obtain a wear-resistant particle body; wherein the mass ratio of the second mixed powder to the cellulose nanofiber is 100:0.8-12; the mass concentration of the cellulose nanofiber suspension is 5wt% to 15wt%; and / or the pressing conditions include: a pressure of 50MPa to 80MPa and holding the pressure for 10s to 15s;

[0026] (4) Sintering the wear-resistant particle blank obtained in step (3) to obtain fiber-modified wear-resistant particles; preferably, the sintering is carried out in an air atmosphere; and / or the sintering includes first heating the temperature to 120°C to 200°C at a rate of 10°C / min to 20°C / min and keeping the temperature for 3h to 5h, then heating the temperature to 600°C to 800°C at a rate of 5°C / min to 10°C / min and keeping the temperature for 1h to 2h, and finally heating the temperature to 1250°C to 1550°C at a rate of 2°C / min to 5°C / min and keeping the temperature for 3h to 6h.

[0027] In the present invention, alumina nanofibers and nanocellulose fibers are used to modify the wear-resistant particles, which can enhance the toughness of the wear-resistant particles and further improve the wear resistance. The nanocellulose fibers are used as a binder to bond the powder into granules, and part of the nanocellulose fibers are carbonized during the sintering process, which can also enhance the strength of the wear-resistant particles and improve the wear resistance. The addition of healing agents and auxiliary agents can reduce the fiber loss during the sintering process, while ensuring that the wear-resistant particles have a certain healing property and better wear resistance.

[0028] According to some embodiments of the present invention, the method for preparing the porous wear-resistant material comprises: laying wear-resistant particles on the surface of a polymer non-woven fabric, and then subjecting the polymer non-woven fabric laid with the wear-resistant particles to rolling, microwave heating, and rolling to obtain the porous wear-resistant material.

[0029] According to some embodiments of the present invention, the laying specifically includes: spreading the polymer non-woven fabric on a conveyor belt, and laying the wear-resistant particles on the surface of the polymer non-woven fabric through a vibrating feeder; preferably, the speed of the conveyor belt is 0.8m / min to 1.5m / min; the frequency of the vibrating feeder is 50Hz to 80Hz, and the amplitude is 2mm to 5mm;

[0030] And / or, the conditions of the roller pressing include: temperature of 100°C to 120°C, pressure of 1.2MPa to 2.5MPa, time of 30s to 40s, and roller spacing of 0.8mm to 1.0mm;

[0031] And / or, the microwave heating conditions include: a frequency of 2.45 GHz to 3.0 GHz, a power density of 30 W / cm 2 ~40W / cm 2 , time is 90s~100s, temperature is 160℃~180℃;

[0032] And / or, the conditions for winding include: tension 5N / cm to 10N / cm;

[0033] And / or, the thickness of the porous wear-resistant material is 1.2 mm to 2.5 mm.

[0034] According to some embodiments of the present invention, the conditions for pressurized curing include: first, keeping warm and maintaining pressure for 1 hour to 1.5 hours under the conditions of pressure of 0.5MPa to 1.5MPa and temperature of 80℃ to 90℃, then keeping warm and maintaining pressure for 2 hours to 2.5 hours under the conditions of pressure of 0.5MPa to 5.5MPa and temperature of 120℃ to 200℃; finally, keeping warm for 4 hours to 4.5 hours under the conditions of pressure of 0.5MPa to 3.5MPa and temperature of 180℃ to 220℃.

[0035] A second aspect of the present invention provides a carbon fiber reinforced epoxy resin composite material prepared by the above method.

[0036] Beneficial effects:

[0037] The porous wear-resistant material of the present invention has good affinity with carbon fiber prepreg tape, and can be firmly combined with carbon fiber reinforced epoxy resin composite products only by relying on the excess epoxy resin in the carbon fiber prepreg tape, and can replace the adhesive tape in the traditional paving process; the production process of carbon fiber reinforced epoxy resin composite products is not changed; the porous wear-resistant material can effectively improve the wear resistance of the products, and the wear of the products affixed with the porous wear-resistant material is significantly reduced compared with the samples without the porous wear-resistant material.

[0038] The porous wear-resistant material prepared by the present invention can seamlessly connect with the existing carbon fiber prepreg tape laying process without any changes to the production and laying molding process of the prepreg tape; its surface density is only about 100g / m 2 , easy to combine with epoxy resin, and significantly improve wear resistance.

[0039] The present invention can effectively improve the wear resistance of any epoxy resin composite material product made by the prepreg tape paving method. The composite material is easy to transport, has a long shelf life, and is simple to use. In addition, since the use of adhesive tape is reduced, time and economic costs are saved. By using the present invention, carbon fiber reinforced epoxy resin composite materials can be made to have higher durability and safety while maintaining lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of laying the porous wear-resistant material of the present invention;

[0041] Figure 2 This is a schematic diagram of the preparation process of the porous wear-resistant material of the present invention;

[0042] Figure 3 This is a schematic diagram of microwave heating of the porous wear-resistant material of the present invention. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the embodiments, but the present invention is not limited by these embodiments.

[0044] In the following examples and comparative examples of the present invention, unless otherwise specified, all raw materials used are commercially available.

[0045] The carbon fiber prepreg tape is not particularly limited and any commercially available one may be used. In the embodiments and comparative examples of the present invention, the carbon fiber prepreg tape has a T700 grade carbon fiber and an epoxy resin (E51, epoxy equivalent 200) content of 35%.

[0046] In the embodiment of the present invention, 4 layers of carbon fiber prepreg tapes are laid.

[0047] Preparation Example 1

[0048] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0049] The preparation of the wear-resistant particles comprises:

[0050] Alumina was placed in a 50 vol% ethanol aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 80°C for 2 hours; then the dried wear-resistant particles were placed in a 1% volume concentration, pH = 4 silane coupling agent (KH550) aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 120°C for 2 hours to obtain the wear-resistant particles (D50 = 15 μm).

[0051] The preparation of the porous wear-resistant material comprises:

[0052] Polypropylene nonwoven fabric (grade S700, surface density 80g / m 2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8 m / min; the wear-resistant particles (D50=15 μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50 Hz, amplitude 2 mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5 mm is obtained by rolling and microwave heating in sequence;

[0053] The conditions for roller pressing include: temperature of 100°C, pressure of 1.2 MPa, roller spacing of 0.8 mm, and time of 30 s; the conditions for microwave heating include: frequency of 2.45 GHz, power density of 30 W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0054] Preparation Example 2

[0055] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0056] The preparation of the wear-resistant particles comprises:

[0057] Silicon carbide is placed in a 50 vol% ethanol aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 80°C for 2 hours; then the dried wear-resistant particles are placed in a 1% volume concentration, pH = 4 silane coupling agent (KH550) aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 120°C for 2 hours to obtain the wear-resistant particles (D50 = 15 μm).

[0058] The preparation of the porous wear-resistant material comprises:

[0059] Polypropylene nonwoven fabric (grade S700, surface density 80g / m 2, porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8 m / min; the wear-resistant particles (D50=15 μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50 Hz, amplitude 2 mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5 mm is obtained by rolling and microwave heating in sequence;

[0060] The conditions for roller pressing include: temperature of 100°C, pressure of 1.2 MPa, roller spacing of 0.8 mm, and time of 30 s; the conditions for microwave heating include: frequency of 2.45 GHz, power density of 30 W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0061] Preparation Example 3

[0062] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0063] The preparation of the wear-resistant particles comprises:

[0064] Aluminum oxide and silicon carbide (mass ratio of 7:3) are placed in a 50 vol% ethanol aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at a temperature of 80°C for 2 hours; then the dried wear-resistant particles are placed in a 1% volume concentration, pH = 4 silane coupling agent (KH550) aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at a temperature of 120°C for 2 hours to obtain the wear-resistant particles (D50 = 15 μm).

[0065] The preparation of the porous wear-resistant material comprises:

[0066] Polypropylene nonwoven fabric (grade S700, surface density 80g / m 2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8 m / min; the wear-resistant particles (D50=15 μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50 Hz, amplitude 2 mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5 mm is obtained by rolling and microwave heating in sequence;

[0067] The conditions for roller pressing include: temperature of 100°C, pressure of 1.2 MPa, roller spacing of 0.8 mm, and time of 30 s; the conditions for microwave heating include: frequency of 2.45 GHz, power density of 30 W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0068] Preparation Example 4

[0069] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0070] The preparation of the wear-resistant particles comprises:

[0071] The silicon oxide was placed in a 50 vol% ethanol aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 80°C for 2 hours; then the dried wear-resistant particles were placed in a 1% volume concentration, pH = 4 silane coupling agent (KH550) aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 120°C for 2 hours to obtain the wear-resistant particles (D50 = 15 μm).

[0072] The preparation of the porous wear-resistant material comprises:

[0073] Polypropylene nonwoven fabric (grade S700, surface density 80g / m 2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8 m / min; the wear-resistant particles (D50=15 μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50 Hz, amplitude 2 mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5 mm is obtained by rolling and microwave heating in sequence;

[0074] The conditions for roller pressing include: temperature of 100°C, pressure of 1.2 MPa, roller spacing of 0.8 mm, and time of 30 s; the conditions for microwave heating include: frequency of 2.45 GHz, power density of 30 W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0075] Preparation Example 5

[0076] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0077] The preparation of the wear-resistant particles comprises:

[0078] Alumina was placed in a 50 vol% ethanol aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 80°C for 2 hours; then the dried wear-resistant particles were placed in a 1% volume concentration, pH = 4 silane coupling agent (KH550) aqueous solution, ultrasonically dispersed for 15 minutes, and then dried at 120°C for 2 hours to obtain the wear-resistant particles (D50 = 15 μm).

[0079] The preparation of the porous wear-resistant material comprises:

[0080] Polyethylene nonwoven fabric (grade HDPE6098, surface density 80g / m 2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8 m / min; the wear-resistant particles (D50=15 μm) are evenly laid on the surface of the polyethylene non-woven fabric by a vibrating feeder (frequency 50 Hz, amplitude 2 mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5 mm is obtained by rolling and microwave heating in sequence;

[0081] The conditions for roller pressing include: temperature of 100°C, pressure of 1.2 MPa, roller spacing of 0.8 mm, and time of 30 s; the conditions for microwave heating include: frequency of 2.45 GHz, power density of 30 W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0082] Preparation Example 6

[0083] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0084] The preparation of the wear-resistant particles comprises:

[0085] (1) Alumina, a healing agent and an auxiliary agent are mixed, and a first ball milling, a first drying and a sieving are performed to obtain a first mixed powder; wherein the mass ratio of alumina, the healing agent and the auxiliary agent is 70:6:3; the particle size of the first mixed powder is 300 mesh; and / or the conditions of the first ball milling include: the time is 6 hours; and / or the conditions of the first drying include: the temperature is 120°C and the time is 24 hours; and / or the healing agent is a combination of titanium boride and boron carbide in a mass ratio of 1:1; and / or the auxiliary agent is a combination of magnesium oxide, yttrium oxide and cerium fluoride in a mass ratio of 1:0.5:0.2; and / or the diameter of the alumina nanofiber is 50nm-60nm, and the specific surface area is 300m 2 / g~500m 2 / g; and / or, the diameter of the cellulose nanofibers is 10nm to 30nm;

[0086] (2) mixing the alumina nanofibers with the first mixed powder obtained in step (1), performing a second ball milling, a second drying, and a sieving to obtain a second mixed powder; wherein the mass ratio of the alumina nanofibers to the first mixed powder is 5:100; the particle size of the second mixed powder is 500 mesh; and / or the conditions for the second ball milling include: a time of 8 hours; and / or the conditions for the second drying include: a temperature of 120° C.; and a time of 24 hours;

[0087] (3) adding a cellulose nanofiber suspension to the second mixed powder obtained in step (2), granulating and pressing to obtain a wear-resistant particle body; wherein the mass ratio of the second mixed powder to the cellulose nanofiber is 100:1.5; the mass concentration of the cellulose nanofiber suspension is 8 wt%; and / or the pressing conditions include: a pressure of 60 MPa and holding pressure for 15 seconds;

[0088] (4) Sintering the wear-resistant particle body obtained in step (3) to obtain the wear-resistant particles; the sintering is carried out in an air atmosphere; and / or, the sintering includes first heating to 150°C at a rate of 10°C / min and keeping warm for 4 hours, then heating to 700°C at a rate of 5°C / min and keeping warm for 1 hour, and finally heating to 1550°C at a rate of 2°C / min and keeping warm for 5 hours; and / or, the particle size of the wear-resistant particles is 15 μm.

[0089] The preparation of the porous wear-resistant material comprises:

[0090] Polypropylene nonwoven fabric (S700, surface density 80g / m 2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8m / min; the wear-resistant particles (D50=15μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50Hz, amplitude 2mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5mm is obtained by rolling and microwave heating in sequence; wherein the rolling conditions include: temperature of 100°C, pressure of 1.2MPa, roller spacing of 0.8mm, and time of 30s; the microwave heating conditions include: frequency of 2.45GHz, power density of 30W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0091] Preparation Example 7

[0092] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0093] The preparation of the wear-resistant particles is the same as that in Preparation Example 1.

[0094] The preparation of the porous wear-resistant material comprises:

[0095] Polypropylene nonwoven fabric (grade S700, surface density 100g / m 2, porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8m / min; the wear-resistant particles (D50=15μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50Hz, amplitude 2mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5mm is obtained by rolling and microwave heating in sequence; wherein the rolling conditions include: temperature of 100°C, pressure of 1.2MPa, roller spacing of 0.8mm, and time of 30s; the microwave heating conditions include: frequency of 2.45GHz, power density of 30W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0096] Preparation Example 8

[0097] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0098] The preparation of the wear-resistant particles is the same as that in Preparation Example 1.

[0099] The preparation of the porous wear-resistant material comprises:

[0100] Polypropylene nonwoven fabric (grade V30S, surface density 80g / m 2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8 m / min; the wear-resistant particles (D50=15 μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50 Hz, amplitude 2 mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 0.5 mm is obtained by rolling and microwave heating in sequence;

[0101] The conditions for roller pressing include: temperature of 100°C, pressure of 1.2 MPa, roller spacing of 0.8 mm, and time of 30 s; the conditions for microwave heating include: frequency of 2.45 GHz, power density of 30 W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0102] Comparative Preparation Example 1

[0103] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0104] The preparation of the wear-resistant particles is the same as that in Preparation Example 1.

[0105] The preparation of the porous wear-resistant material comprises:

[0106] Polypropylene nonwoven fabric (grade S700, surface density 80g / m2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8m / min; alumina particles (unmodified, D50=15μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50Hz, amplitude 2mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 1.2mm is obtained by rolling and microwave heating in sequence; wherein the rolling conditions include: temperature of 100°C, pressure of 1.2MPa, roller spacing of 0.8mm, and time of 30s; microwave heating conditions include: frequency of 2.45GHz, power density of 30W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0107] Comparative Preparation Example 2

[0108] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0109] The preparation of the wear-resistant particles is the same as that in Preparation Example 1.

[0110] The preparation of the porous wear-resistant material comprises:

[0111] Polypropylene nonwoven fabric (grade S700, surface density 80g / m 2 , porosity 80%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8 m / min; after roller pressing and microwave heating in sequence, the porous wear-resistant material with a thickness of 1.2 mm is obtained by rolling; wherein the roller pressing conditions include: temperature of 100°C, pressure of 1.2 MPa, roller spacing of 0.8 mm, and time of 30 s; the microwave heating conditions include: frequency of 2.45 GHz, power density of 30 W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0112] Comparative Preparation Example 3

[0113] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0114] The preparation of the wear-resistant particles is the same as that in Preparation Example 1.

[0115] The preparation of the porous wear-resistant material comprises:

[0116] Polypropylene nonwoven fabric (grade S700, surface density 80g / m 2, porosity 35%) is unfolded on a conveyor belt, wherein the conveyor belt speed is 0.8m / min; alumina particles (unmodified, D50=15μm) are evenly laid on the surface of the polypropylene non-woven fabric by a vibrating feeder (frequency 50Hz, amplitude 2mm) to obtain a polymer non-woven fabric laid with wear-resistant particles; then, the porous wear-resistant material with a thickness of 1.2mm is obtained by rolling and microwave heating in sequence; wherein the rolling conditions include: temperature of 100°C, pressure of 1.2MPa, roller spacing of 0.8mm, and time of 30s; microwave heating conditions include: frequency of 2.45GHz, power density of 30W / cm 2 The irradiation time is 90s and the temperature is 160°C; the winding conditions include: the tension is controlled at 5N / cm.

[0117] Comparative Preparation Example 4

[0118] This preparation example is used to illustrate the porous wear-resistant material and the preparation method thereof of the present invention.

[0119] The preparation of the wear-resistant particles is the same as that of Preparation Example 6, except that the healing agent is titanium boride and the auxiliary agent is magnesium oxide.

[0120] The preparation of the porous wear-resistant material is the same as Preparation Example 6.

[0121] Example 1

[0122] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0123] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 1 is covered on the surface of the carbon fiber prepreg tape, and then a sealing strip and a vacuum bag are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated, put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.15% (during the TABER test, the sample size is 10 cm, the grinding wheel is preferably H-18, the load is 1 kg / wheel, and the total number of revolutions is 3000; the same below).

[0124] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0125] Example 2

[0126] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0127] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 2 is covered on the surface of the carbon fiber prepreg tape, and then a sealing strip and a vacuum bag are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated, and the mold is put into a tank for pressurized curing. After demolding, the surface is polished to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.11%. Since silicon carbide has good heat resistance, the heat resistance of the composite material can also be improved, such as the thermal conductivity is increased to 15 W / m·K.

[0128] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0129] Example 3

[0130] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0131] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 3 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.09%.

[0132] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0133] Example 4

[0134] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0135] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 4 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.18%.

[0136] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0137] Example 5

[0138] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0139] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 5 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.17%.

[0140] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0141] Example 6

[0142] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0143] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 6 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.10%.

[0144] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0145] Example 7

[0146] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0147] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 7 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.13%.

[0148] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0149] Example 8

[0150] This embodiment is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0151] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Preparation Example 8 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.20%.

[0152] The pressurized curing includes: first, keeping the temperature at 0.5 MPa and 80°C for 1 hour, then heating to 120°C and keeping the temperature at 120°C for 2 hours, and finally heating to 180°C and keeping the temperature at 180°C for 4 hours.

[0153] Comparative Example 1

[0154] This comparative example is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0155] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Comparative Preparation Example 1 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 3.4%.

[0156] The pressurized curing includes: firstly keeping the temperature and pressure at a pressure of 0.5 MPa and a temperature of 60°C for 30 minutes, and then keeping the temperature at a pressure of 3.5 MPa and a temperature of 150°C for 60 minutes.

[0157] Comparative Example 2

[0158] This comparative example is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0159] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Comparative Preparation Example 2 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 5.4%.

[0160] The pressurized curing includes: firstly keeping the temperature and pressure at a pressure of 0.5 MPa and a temperature of 60°C for 30 minutes, and then keeping the temperature at a pressure of 3.5 MPa and a temperature of 150°C for 60 minutes.

[0161] Comparative Example 3

[0162] This comparative example is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0163] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Comparative Preparation Example 3 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 4.3%.

[0164] The pressurized curing includes: firstly keeping the temperature and pressure at a pressure of 0.5 MPa and a temperature of 60°C for 30 minutes, and then keeping the temperature at a pressure of 3.5 MPa and a temperature of 150°C for 60 minutes.

[0165] Comparative Example 4

[0166] This comparative example is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0167] The carbon fiber prepreg is laid on the mold, and then the porous wear-resistant material prepared in Comparative Preparation Example 4 is covered on the surface of the carbon fiber prepreg tape. Then, sealing strips and vacuum bags are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated. The mold is put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 0.34%.

[0168] The pressurized curing includes: firstly keeping the temperature and pressure at a pressure of 0.5 MPa and a temperature of 60°C for 30 minutes, and then keeping the temperature at a pressure of 3.5 MPa and a temperature of 150°C for 60 minutes.

[0169] Comparative Example 5

[0170] This comparative example is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0171] The carbon fiber prepreg is laid on the mold, and then the surface of the carbon fiber prepreg tape is covered with a polymer non-woven fabric with wear-resistant particles (without rolling and microwave heating), and then a sealing strip and a vacuum bag are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated, put into a tank for pressurized curing, and the surface is polished after demoulding to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 5.0%.

[0172] The pressurized curing includes: firstly keeping the temperature and pressure at a pressure of 0.5 MPa and a temperature of 60°C for 30 minutes, and then keeping the temperature at a pressure of 3.5 MPa and a temperature of 150°C for 60 minutes.

[0173] Comparative Example 6

[0174] This comparative example is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0175] The carbon fiber reinforced epoxy resin composite material is not laid with porous wear-resistant material, and the TABER wear rate is 6.0%.

[0176] Comparative Example 7

[0177] This comparative example is used to illustrate the carbon fiber reinforced epoxy resin composite material and the preparation method thereof of the present invention.

[0178] The carbon fiber prepreg is laid on the mold, and then the polyurea wear-resistant coating (thickness 2mm, surface density 2000g / m) is sprayed on the surface of the carbon fiber prepreg tape. 2 ), then a sealing strip and a vacuum bag are attached around the mold on which the carbon fiber prepreg is laid, and the mold is evacuated, and the mold is put into a tank for pressurized curing. After demoulding, the surface is polished to obtain a carbon fiber reinforced epoxy resin composite material with a TABER wear rate of 2.35%.

[0179] The pressurized curing includes: firstly keeping the temperature and pressure at a pressure of 0.5 MPa and a temperature of 60°C for 30 minutes, and then keeping the temperature at a pressure of 3.5 MPa and a temperature of 150°C for 60 minutes.

[0180] It should be noted that the embodiments described above are only used to explain the present invention and do not constitute any limitation to the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words, rather than restrictive words. The present invention may be modified as specified within the scope of the claims of the present invention, and the present invention may be revised without departing from the scope and spirit of the present invention. Although the present invention described therein relates to specific methods, materials and embodiments, it does not mean that the present invention is limited to the specific examples disclosed therein, on the contrary, the present invention can be extended to all other methods and applications with the same functions.

Claims

1. A method for preparing a carbon fiber reinforced epoxy resin composite material, characterized in that: The method comprises: (1) impregnating carbon fiber in epoxy resin to obtain a carbon fiber prepreg tape; (2) covering the surface of the carbon fiber prepreg tape with a porous wear-resistant material, and performing vacuuming and pressurizing curing to obtain a carbon fiber reinforced epoxy resin composite material; The porous wear-resistant material is prepared by a method including laying wear-resistant particles on the surface of a polymer non-woven fabric and performing roller pressing and microwave heating.

2. The method according to claim 1, characterized in that The polymer non-woven fabric is selected from at least one of high-density polyethylene non-woven fabric, polypropylene non-woven fabric, polyvinyl chloride non-woven fabric, polyethylene terephthalate non-woven fabric, polyurethane non-woven fabric, nylon non-woven fabric, and aramid non-woven fabric; preferably, the polypropylene non-woven fabric is selected from at least one of homopolymer polypropylene non-woven fabric, random copolymer polypropylene non-woven fabric, and block copolymer polypropylene non-woven fabric; And / or, the wear-resistant particles are selected from at least one of aluminum oxide, silicon oxide or silicon carbide; preferably, the wear-resistant particles are selected from aluminum oxide and / or silicon carbide; further preferably, the wear-resistant particles are selected from a combination of aluminum oxide and silicon carbide in a mass ratio of 7:2-5; further preferably, the wear-resistant particles are modified with a silane coupling agent or fiber-modified.

3. The method according to claim 1 or 2, characterized in that: The surface density of the polymer nonwoven fabric is 30 g / m 2 ~150g / m 2 ; And / or, the porosity of the polymer nonwoven fabric is 60% to 85%; And / or, the particle size distribution of the wear-resistant particles is D50=15±5 μm.

4. The method according to any one of claims 1 to 3, characterized in that The step of modifying the wear-resistant particles with a silane coupling agent comprises: placing the wear-resistant particles in a 30 vol% to 50 vol% ethanol aqueous solution, ultrasonically dispersing for 15 minutes to 30 minutes, and then performing a first drying; then placing the first dried wear-resistant particles in a 1% to 3% volume concentration, pH = 4-5 silane coupling agent aqueous solution, ultrasonically dispersing for 15 minutes to 30 minutes, and then performing a second drying to obtain the wear-resistant particles modified with the silane coupling agent; Preferably, the first drying conditions include: temperature of 80°C to 100°C and time of 2h to 4h; And / or, the temperature of the second drying is 120° C. to 140° C., and the time is 2 h to 4 h.

5. The method according to any one of claims 1 to 4, characterized in that The step of fiber modification of the wear-resistant particles comprises: (1) Wear-resistant particles, a healing agent and an auxiliary agent are mixed, and a first ball milling, a first drying and a sieving are performed to obtain a first mixed powder; wherein the mass ratio of the wear-resistant particles, the healing agent and the auxiliary agent is 70:5-6:1-3; the healing agent is a combination of titanium boride and boron carbide in a mass ratio of 1:1-2; the auxiliary agent is a combination of magnesium oxide, yttrium oxide and cerium fluoride in a mass ratio of 1:0.1-0.5:0.1-0.2; the diameter of the aluminum oxide nanofiber is 50nm-60nm, and the specific surface area is 300m 2 / g~500m 2 / g; the diameter of the cellulose nanofibers is 10nm to 30nm; (2) mixing the alumina nanofibers with the first mixed powder obtained in step (1), performing a second ball milling, a second drying, and a sieving process to obtain a second mixed powder; wherein the mass ratio of the alumina nanofibers to the first mixed powder is 1-8:100; (3) adding a cellulose nanofiber suspension to the second mixed powder obtained in step (2), granulating and pressing to obtain a wear-resistant particle body; wherein the mass ratio of the second mixed powder to the cellulose nanofiber is 100:0.8-12; and the mass concentration of the cellulose nanofiber suspension is 5wt% to 15wt%; (4) Sintering the wear-resistant particle green body obtained in step (3) to obtain fiber-modified wear-resistant particles.

6. The method according to any one of claims 1 to 5, characterized in that In step (1), the particle size of the first mixed powder is 300-400 mesh; and / or, the conditions of the first ball milling include: the time is 6 hours to 10 hours; and / or, the conditions of the first drying include: the temperature is 100° C. to 150° C., and the time is 24 hours to 36 hours; and / or, in step (2), the particle size of the second mixed powder is 300-500 mesh; and / or, the conditions of the second ball milling include: the time is 8 hours to 12 hours; and / or, the conditions of the second drying include: the temperature is 100° C. to 150° C.; the time is 24 hours to 36 hours; And / or, in step (3), the conditions for the compression molding include: a pressure of 50 MPa to 80 MPa, and a holding pressure of 10 s to 15 s; And / or, in step (4), the sintering is carried out in an air atmosphere; and / or, the sintering includes first heating the temperature to 120°C~200°C at a rate of 10°C / min~20°C / min and keeping it warm for 3h~5h, then heating the temperature to 600°C~800°C at a rate of 5°C / min~10°C / min and keeping it warm for 1h~2h, and finally heating the temperature to 1250°C~1550°C at a rate of 2°C / min~5°C / min and keeping it warm for 3h~6h.

7. The method according to any one of claims 1 to 6, characterized in that The preparation method of the porous wear-resistant material comprises: laying wear-resistant particles on the surface of a polymer non-woven fabric, and then subjecting the polymer non-woven fabric laid with the wear-resistant particles to rolling, microwave heating, and rolling to obtain the porous wear-resistant material.

8. The method according to claim 7, characterized in that The laying specifically includes: spreading the polymer non-woven fabric on a conveyor belt, and laying the wear-resistant particles on the surface of the polymer non-woven fabric through a vibrating feeder; preferably, the speed of the conveyor belt is 0.8m / min to 1.5m / min; the frequency of the vibrating feeder is 50Hz to 80Hz, and the amplitude is 2mm to 5mm; And / or, the conditions of the roller pressing include: temperature of 100°C to 120°C, pressure of 1.2MPa to 2.5MPa, time of 30s to 40s, and roller spacing of 0.8mm to 1.0mm; And / or, the microwave heating conditions include: a frequency of 2.45 GHz to 3.0 GHz, a power density of 30 W / cm 2 ~40W / cm 2 , time is 90s~100s, temperature is 160℃~180℃; And / or, the conditions for winding include: tension 5N / cm to 10N / cm; And / or, the thickness of the porous wear-resistant material is 1.2 mm to 2.5 mm.

9. The method according to any one of claims 1 to 8, characterized in that The conditions for pressurized curing include: first, keeping the temperature and pressure for 1 hour to 1.5 hours at a pressure of 0.5MPa to 1.5MPa and a temperature of 80°C to 90°C, then keeping the temperature at a pressure of 0.5MPa to 5.5MPa and a temperature of 120°C to 200°C for 2 hours to 2.5 hours; and finally keeping the temperature at 0.5MPa to 3.5MPa and a temperature of 180°C to 220°C for 4 hours to 4.5 hours.

10. A carbon fiber reinforced epoxy resin composite material prepared by the method according to any one of claims 1 to 9.

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