CN117757263A - A high-strength, low-friction and wear-resistant resin-based composite material and its preparation method and use - Google Patents

Abstract

The invention provides a high-strength low-friction wear-resistant resin matrix composite material, and a preparation method and application thereof, and belongs to the field of composite materials. According to the invention, the irradiation modified polytetrafluoroethylene nano powder is used as a solid lubricant, and the multi-scale chopped carbon fiber is used for compounding and filling in the PPS composite material to construct a compact filler reinforced network structure, so that the obtained composite material has excellent mechanical property and heat conduction property, and simultaneously has excellent low-friction wear-resisting function. The high-strength low-friction wear-resistant resin matrix composite material has very wide application prospect in the fields of aerospace, transportation, electronic devices, high-end mechanical equipment and the like, and can be used for preparing parts such as wear-resistant bearings, self-lubricating parts, mechanical gaskets and the like used under dry friction and other application working conditions.

Description

A high-strength, low-friction and wear-resistant resin-based composite material and its preparation method and use

Technical field

The invention belongs to the field of composite materials, and specifically relates to a high-strength, low-friction and wear-resistant resin-based composite material and its preparation method and use.

Background technique

As we all know, friction and wear phenomena can be seen everywhere in daily life and industrial production. In some cases, friction plays a vital role in the normal operation of mechanical systems, but periodic friction often leads to severe energy loss and material wear, which greatly shortens the service life of mechanical equipment and related parts. Therefore, reducing unfavorable friction and wear in various forms and improving the self-lubricating and wear-resistant properties of materials have become important measures to save energy and improve the reliability of mechanical equipment. Currently, resin-based composite materials have the advantages of light weight, low cost, high specific strength, and easy processing and molding, making them gradually replace materials such as metals and ceramics in many fields. They are especially widely used in the field of tribology, such as gears, Bearings, pulleys and medical equipment, etc.

Polyphenylene sulfide (PPS) is a linear thermoplastic resin with high rigidity and high crystallinity, and is considered the sixth largest special engineering plastic. With its excellent thermodynamic properties, electrical properties, dimensional stability and chemical resistance, PPS and its composite materials are widely used in aerospace, transportation, mechanical components, electronic devices and household equipment and other fields. However, since PPS itself has a high friction coefficient (0.45-0.57) and a high wear rate (3.55×10 ^-3 mm ³ /Nm), the parts prepared by it are subject to extreme loads and frequent start and stop operations during use. Such effects are prone to severe friction and wear, making it unable to meet the application requirements of friction structural parts in mechanical equipment. It can be seen that improving the friction and wear properties of PPS to prepare high-strength, low-friction and wear-resistant functional composite materials and parts has important scientific value and application prospects.

In order to promote the application of PPS and its composite materials in the field of mechanical engineering, domestic and foreign scholars have made a lot of attempts to modify their friction and wear. However, current technical methods mostly ignore the thermodynamic properties of the material and its behavior under extreme load conditions. Tribological properties result in materials that cannot meet the performance requirements for mechanical equipment parts in practical applications. For example, the patent application with publication number CN115785671A discloses an airgel/polyphenylene sulfide self-lubricating friction material and its preparation method. This invention uses airgel, reinforcing fiber and liquid phase auxiliary agent to mix and fill modified PPS. However, its improvement in self-lubricating performance is limited (the lowest friction coefficient is 0.178), and its mechanical strength and thermal conductivity are not ideal. The patent application with publication number CN113337130A discloses an isolation network composite material containing hybrid nanofillers, its preparation method and its use. This invention utilizes the self-polymerization of dopamine or the copolymerization of dopamine polyetherimide on the surface of PPS A highly thermally conductive PPS-based composite material is prepared by co-depositing grafted carbon nanotubes and then wrapping silicon carbide nanoparticles. It reduces the friction and wear of PPS by significantly reducing the friction temperature. However, this method has limited improvement in the tribological properties of PPS. (The lowest friction coefficient is 0.193, and the specific wear rate is 2.50×10 ^-5 mm ³ /Nm). The patent application with publication number CN109370220A discloses a graphene-modified polyphenylene sulfide composite material and its preparation method. The invention mainly uses graphene powder, basalt fiber, curing agent and vulcanizing agent to modify PPS. Through this This method greatly reduces the friction coefficient and wear rate of PPS, but its poor mechanical strength makes it difficult to play a role in practical applications. Therefore, the development of a self-lubricating and wear-resistant resin-based composite material with excellent mechanical strength and high thermal conductivity and its preparation method has important scientific value and application prospects.

Contents of the invention

The object of the present invention is to provide a high-strength, low-friction and wear-resistant resin-based composite material and its preparation method and use.

The invention provides a high-strength, low-friction and wear-resistant resin-based composite material, which is prepared from the following raw materials in parts by weight: 10-200 parts of resin matrix, 5-80 parts of solid lubricant, and 1-60 parts of carbon fiber. ; The carbon fiber includes carbon fiber A and carbon fiber B. The average length of carbon fiber A is 0.1-3mm and the average diameter is 1-20μm. The average length of carbon fiber B is 1-20mm and the average diameter is 1-20μm.

Further, the high-strength, low-friction and wear-resistant resin-based composite material is prepared from the following raw materials in parts by weight: 20-100 parts of resin matrix, 10-50 parts of solid lubricant, and 10-40 parts of carbon fiber; Carbon fiber is composed of carbon fiber A and carbon fiber B, where the weight ratio of carbon fiber A and carbon fiber B is (1-3): (1-3).

Further, the high-strength, low-friction and wear-resistant resin-based composite material is prepared from the following parts by weight of raw materials: 56 parts of resin matrix, 24 parts of solid lubricant, and 20 parts of carbon fiber; the carbon fiber is composed of carbon fiber A and carbon fiber Composed of B, the weight ratio of carbon fiber A and carbon fiber B is 1:3.

Further, the average length of carbon fiber A is 0.2-1 mm, and the average diameter is 2-10 μm. The average length of carbon fiber B is 2-10 mm, and the average diameter is 2-10 μm.

Further, the average length of carbon fiber A is 0.3 mm and the average diameter is 6 μm. The average length of carbon fiber B is 3 mm and the average diameter is 7 μm.

Further, the resin matrix is a thermoplastic resin; the solid lubricant is polytetrafluoroethylene or its derivatives; and the carbon fiber is polyacrylonitrile-based or pitch-based chopped carbon fiber.

Further, the resin matrix is polyphenylene sulfide; the derivative of polytetrafluoroethylene is radiation-modified polytetrafluoroethylene; and the carbon fiber is polyacrylonitrile-based chopped carbon fiber.

The invention also provides a method for preparing the above-mentioned high-strength, low-friction and wear-resistant resin-based composite material, which includes the following steps: drying the raw materials, premixing, and melting and blending. The high-strength, low-friction and wear-resistant resin-based composite materials prepared by the above method can use conventional thermoplastic processing methods such as hot pressing molding, calendering molding, (micro)injection molding, etc.

Further, the molding is injection molding.

The invention also provides applications of the above-mentioned high-strength, low-friction polymer wear-resistant resin-based composite materials in the fields of aerospace, transportation, electronic devices and high-end mechanical equipment.

The above-mentioned high-strength, low-friction and wear-resistant resin-based composite materials can be used to prepare wear-resistant bearings, self-lubricating parts, mechanical liners and other parts used under dry friction and other working conditions.

Compared with the existing technology, the present invention has achieved the following beneficial effects: the present invention uses radiation-modified polytetrafluoroethylene nanopowder as a solid lubricant, and uses multi-scale chopped carbon fiber compound filling to construct in PPS composite materials The dense filler-reinforced network enables the resulting composite material to have excellent mechanical properties and thermal conductivity, and at the same time promotes the formation of a highly lubricating transfer film on the surface of the dual parts, thereby exhibiting excellent tribological properties under different PV operating conditions. The high-strength, low-friction and wear-resistant resin-based composite material of the present invention has broad application prospects in the fields of aerospace, transportation, electronic devices and high-end mechanical equipment, and can be used to prepare wear-resistant materials for use under dry friction and other working conditions. Bearings, self-lubricating parts, mechanical gaskets and other components.

Obviously, according to the above content of the present invention, according to the common technical knowledge and common means in the field, without departing from the above basic technical idea of the present invention, various other forms of modifications, replacements or changes can also be made.

The above contents of the present invention will be further described in detail below through specific implementation methods in the form of examples. However, this should not be understood to mean that the scope of the above subject matter of the present invention is limited to the following examples. All technologies implemented based on the above contents of the present invention belong to the scope of the present invention.

Description of the drawings

Figure 1. Morphology images of (A) i-PTFE, (B) PSCF and (C) SCF.

Figure 2. (A)P/i-PTFE, (B)P/i-PTFE/PS20, (C)P/i-PTFE/PS15-S5, (D)P/i-PTFE/PS10-S10, ( E) Brittle fracture morphology of P/i-PTFE/PS5-S15 and (F) P/i-PTFE/S20 composites.

Figure 3. (A) Flexural properties, (B) tensile strength and surface hardness of each resin-based composite material.

Figure 4. (A) Instantaneous friction coefficient, (B) average friction coefficient and specific wear rate of each resin-based composite material.

Figure 5. (A)P/i-PTFE, (B)P/i-PTFE/P20, (C)P/i-PTFE/PS15-S5, (D)P/i-PTFE/PS10-S10, ( E) Wear surface morphology of P/i-PTFE/PS5-S15 and (F) P/i-PTFE/S20 composites.

Figure 6. (A)P/i-PTFE, (B)P/i-PTFE/PS20, (C)P/i-PTFE/PS15-S5, (D)P/i-PTFE/PS10-S10, ( E) 3D morphology of wear scars of P/i-PTFE/PS5-S15 and (F) P/i-PTFE/S20 composites.

Fig. 7. (A) Instantaneous friction temperature and (B) thermal conductivity of various resin-based composites.

Figure 8. (A) Friction coefficient and (B) specific wear rate of each resin-based composite material under high PV conditions. Figure 9. (A)P/i-PTFE, (B)P/i-PTFE/P20, (C)P/i-PTFE/PS5-S15 and (D)P/i- in pin-on-disk friction and wear test The corresponding transfer layer morphology of the steel plate surface of the PTFE/S20 composite material.

Detailed ways

The raw materials and equipment used in the present invention are all known products and are obtained by purchasing commercially available products.

Polyphenylene sulfide (PPS) powder (density 1.35g/cm ³ , melting temperature 285°C) was purchased from Deyang Keji High-tech Materials Co., Ltd. Irradiation-modified polytetrafluoroethylene nanopowder (i-PTFE) (brand name JH-305F, particle size 200-300 nm) was purchased from Sichuan Jinhe Polymer Materials Co., Ltd. WD-30 polyacrylonitrile-based short carbon fiber (PSCF, average length 0.3 mm, average diameter 6 μm), LSC070-PEEK polyacrylonitrile-based short carbon fiber (SCF, average length 3 mm, average diameter 7 μm), both purchased from Shanghai Li Shuo Composite Materials Technology Co., Ltd. The micromorphology of i-PTFE, PSCF and SCF is shown in Figure 1.

Example 1. Preparation of high-strength, low-friction and wear-resistant resin-based composite materials of the present invention

Resin-based composite materials were prepared using the melt blending method. The specific operations are as follows: all raw materials were dried at 80±5°C for 12±0.5h before use. The dried raw materials are premixed according to the ratio shown in Table 1. Then, melt mixing was performed using a co-rotating parallel twin-screw extruder (TSSJ/25/33, Chengdu Shengda Chemical Co., Ltd., China). It is uniformly plasticized by the extruder, cooled and granulated, and then placed in a blast drying oven to dry for 12±1h. The composite material obtained above is injection molded using an injection molding machine. The following high-strength, low-friction and wear-resistant resin-based composite materials were prepared respectively: P/i-PTFE/PS20, P/i-PTFE/PS15-S5, P/i-PTFE/PS10-S10, P/i-PTFE/PS5 -S15 and P/i-PTFE/S20.

Table 1. Raw material ratio

Note: The dosage of 30 parts by weight in Table 1 is 300g.

The following is how to prepare the control sample.

Comparative Example 1. Preparation of self-lubricating resin matrix composite material

According to the method of Example 1, a self-lubricating resin-based composite material (P/i-PTFE) was prepared according to the raw material ratio shown in Table 1.

The beneficial effects of the present invention are demonstrated below through experimental examples.

Experimental Example 1. Characterization of microscopic morphology of cross-sections of various resin-based composite materials

(1) Experimental methods

SEM scanning electron microscope (JSM-9600, Japan) was used to observe the brittle fracture surfaces of each resin-based composite material.

(2)Experimental results

Figure 2 shows the cross-sectional micromorphology of each resin-based composite material. As shown in Figure 2(A), obvious pores and i-PTFE particle agglomerates were observed in P/i-PTFE, indicating that i-PTFE filling would form defects in the composite. In addition, the fracture morphology of P/i-PTFE is very smooth, which indicates that the composite has brittle characteristics. Figure 2(B~F) shows the cross-sectional micromorphology of P/i-PTFE/CFs composite material. The results show that carbon fibers (CFs) are randomly dispersed and intertwined within the PPS matrix to form a "reinforced concrete" reinforced structure. In addition, voids or traces caused by exfoliation of CFs due to external force were also observed. However, as the SCF content increases, fewer and fewer voids or defects are observed on the fracture surface of P/i-PTFE/CFs composites. This is because low aspect ratio PSCF forms a loose filler network structure within the composite material, and this loose structure is often destroyed by external forces, thereby forming more defects on the fracture surface, especially P/i-PTFE/PS20 . On the contrary, as the high aspect ratio SCF content increases, more interpenetrating network structures will be formed, which can resist external forces and help improve mechanical properties. When the addition ratio of PSCF to SCF is 1:3, the fracture section of the composite material shows the least defects. This is because a certain content of PSCF can effectively fill the gaps between SCF, thus reducing the fiber-poor area and making the polymer matrix in the carbon fiber. The interpenetrating network shows a denser morphology.

Experimental Example 2. Characterization of mechanical properties of each resin matrix composite material

(1) Experimental methods

A universal material testing machine (Instron 5567, USA) was used to test the mechanical properties of each resin-based composite material at room temperature. The tensile strength test was carried out in accordance with the GB/T 1040.2-2022 standard. The sample size was 150×10×4mm ³ and the test speed was 10mm/min. The bending performance test was carried out in accordance with the GB/T9341-2008 standard, sample size: 80×10×4mm ³ , test speed: 2mm/min.

The surface hardness of each resin-based composite material was tested using a HANDPILX-D Shore hardness tester (Yueqing HANDPI Instrument Co., Ltd., China).

(2)Experimental results

Figure 3 shows the mechanical properties of each resin matrix composite, including bending properties, tensile strength and surface hardness. Figure 3(A) shows that with the addition of CFs, both the flexural strength and flexural modulus of the composite material increase significantly. When the mass ratio of PSCF/SCF is 1:3, the bending strength and modulus of the material reach their maximum values. That is, the flexural strength and modulus of P/i-PTFE/PS5-S15 reach 191.1MPa and 13.7GPa respectively, which are 125.6% and 389.3% higher than P/i-PTFE. Therefore, hybridization of CFs with different aspect ratios is beneficial to improving the bending properties of composite materials. Figure 3(B) shows the tensile strength and surface hardness of resin-based composites containing different CFs. Similar to the flexural properties, the tensile strength of PPS/i-PTFE/CF composites increases significantly with the addition of CFs, and the tensile strength value continues to increase with the increase of SCF content. This is attributed to the better reinforcement effect of high aspect ratio CFs, thereby improving the tensile strength of the composite. In addition, Figure 3(B) shows that the surface hardness of the resin matrix composite is improved after adding CFs, which is related to the formation of entangled CFs network structure that leads to an increase in surface hardness. The above experimental results show that the mechanical properties and surface hardness of P/i-PTFE/CFs composite materials are simultaneously improved.

Experimental Example 3. Characterization of friction and wear properties of various resin-based composite materials

(1) Experimental methods

In accordance with the GB/T3960-2016 standard, a ring-block friction and wear testing machine (M-200, Beijing Guanchai Experimental Instrument Co., Ltd.) was used to test each resin-based composite material under the working conditions of a sliding speed of 0.42m/s and a load of 200N. Tribological properties under conditions. The sample size is 30×7×6mm ³ , and a 45# steel ring with surface roughness Ra=0.8μm is used as the friction pair. Before the test, the surface of the steel ring was polished with sandpaper, ultrasonically cleaned in acetone, and then taken out to dry naturally. Three parallel experiments were conducted on each sample. The wear rate of the composite material was measured using the volume calculation method, and the test time was 1 hour.

The calculation formulas of instantaneous friction coefficient (μ) and specific wear rate (SWR) are as follows:

Among them, P is the friction moment (Nm), F is the applied load (N), r is the radius of the friction pair (mm), v is the wear volume (mm ³ ), d is the sample width (mm), and w is the friction test The wear scar width of the final sample (mm), L is the sliding distance (m).

The SEM scanning electron microscope (JSM-9600, Japan) and the three-dimensional optical profilometer (ContourGT-K, Germany) were used to observe the micromorphology and wear scar morphology of the wear surface of the resin-based composite material after the friction test.

(2)Experimental results

Figure 4(A) shows the relationship between the instantaneous friction coefficient and sliding time of each resin-based composite material. The results show that with the addition of CFs, the friction coefficient in the early stage of friction will be unstable because the fractured CFs acts as a hard abrasive in the sliding interface. However, the reinforced filler network structure formed by SCF makes it difficult to be removed during the sliding process. Peeling is beneficial to reducing the volatility of the friction process. As shown in Figure 4(B), by comparing the average friction coefficient and specific wear rate of P/i-PTFE/PS20 and P/i-PTFE/S20, it is found that PSCFs can effectively reduce the friction coefficient, while SCFs can greatly reduce the specific wear rate. Wear rate, combined with the observations of composite wear surfaces and wear scars in Figures 5 and 6, is due to the fact that the debris generated by the easy peelability of the former promotes the formation of the lubrication transfer film, while the high resistance to external forces of the latter can greatly Reduce material wear. When the filling ratio of PSCFs and SCFs is 1:3, the average friction coefficient and specific wear rate of P/i-PTFE/PS5-S15 composite are as low as 0.142 and 1.63×10 ^-6 mm ³ /Nm, which are similar to those of P/i -PTFE increased by 13.9% and 95.5% respectively. As shown in Figures 5, 6 and Table 2, the wear surface of P/i-PTFE/PS5-S15 composite material is very smooth and shows the shallowest and narrowest wear marks. , this is mainly due to the synergistic and complementary interaction between CFs with different aspect ratios within it to form a complete reinforced network structure, which helps to improve the mechanical properties and thermal conductivity of the composite material. In addition, the graphite layer formed by low aspect ratio PSCFs and low surface energy i-PTFE have a synergistic lubrication effect, thereby greatly improving the tribological properties of the composite material.

Table 2. Width (R _d ) and depth (R _v ) of wear scars of each resin matrix composite material

sample R _d (μm) R _v (μm) P/i-PTEF 6927 318 P/i-PTFE/PS20 4292 99 P/i-PTFE/PS15-S5 6630 412 P/i-PTFE/PS10-S10 3677 117 P/i-PTFE/PS5-S15 2652 29 P/i-PTFE/S20 2823 33

Experimental Example 4. Characterization of frictional heat and thermal conductivity of each resin-based composite material

(1) Experimental methods

A multipath thermometer (AT4204, Changzhou Anbai Precision Instrument Co., Ltd., Changzhou, China) equipped with a K-type thermocouple was used to real-time monitor the temperature during the friction test to characterize the friction heat.

The thermal conductivity properties of each resin-based composite material were characterized using a HotDisk thermal constant analyzer (2500-OT, Sweden).

(2)Experimental results

Figure 7(A) shows the change of sample temperature with time during the friction process of each resin-based composite material. It can be seen that before 500s, the friction temperature of all samples increased significantly, which is consistent with the friction heat in the running-in stage. related to the accumulation. In this case, once the specimen block comes into contact with the friction pair, friction heat begins to be generated and accumulated on the sliding interface, resulting in an increase in the instantaneous friction temperature of the specimen. The P/i-PTFE composite material has the highest friction temperature, which indicates that it may encounter large friction resistance during the friction test, thereby generating a large amount of friction heat. As can be seen from Figure 7(B), P/i-PTFE has the lowest thermal conductivity (0.27W/mK), so the large amount of frictional heat generated by the material during the test cannot be effectively dispersed, causing it to accumulate on the friction contact surface for a long time. It causes the polymer to soften to a certain extent and reduce its mechanical strength, causing severe surface wear, which corresponds to its higher friction coefficient and specific wear rate. Among them, the P/i-PTFE/PS5-S15 composite material has the lowest friction temperature during the friction process, which is attributed to the following factors: (1) Compared with other sample blocks, P/i-PTFE/PS5-S15 has Higher thermal conductivity (0.62W/mK), 129.63% higher than P/i-PTFE, which is beneficial to dissipating friction heat during the sliding process, thereby avoiding increased wear; (2) Good The transfer film formation reduces the direct contact between the composite material and the friction pair, thereby reducing the friction power consumption of the sliding interface.

Experimental Example 5. Tribological performance test of various resin-based composite materials under high PV

(1) Experimental methods

A self-made pin-on-disk friction and wear test device was used to test the tribological properties of each resin-based composite material under the working conditions of a sliding speed of 2m/s and a load of 200N (PV≥10MPa·m/s). The wear of the material was measured using the weighing method, and the test time was 210 seconds. After each test, the surface of the steel plate was re-polished with sandpaper and cleaned with acetone until its temperature returned to room temperature before testing.

The PV value refers to the product of the unit load P on the contact area between the material and the friction device and the relative sliding linear velocity V, which is an approximate measure of the harshness of the material friction test conditions.

(2)Experimental results

Figures 8(A) and (B) show the friction coefficient and wear rate of each resin-based composite material evaluated using a homemade pin-on-disk friction and wear test device, respectively. The duration of the tribological performance test under high PV is 210s, divided into five test cycles, each cycle lasting 42s. As shown in Figure 8(A), the friction coefficients of all samples under high PV decreased with the increase of the test period, which is related to the gradual formation of the transfer film on the surface of the steel disk. Similar to the ring-block friction and wear test, the friction coefficient and wear rate of the P/i-PTFE/PS5-S15 composite under high PV are the lowest in the entire research system. Figure 9 provides the optical image of the counter-grinding steel disc after testing. The transfer film formed by P/i-PTFE/PS5-S15 at the sliding interface is more uniform, which shows that adding CFs with different aspect ratios has a positive effect on the self-lubricating properties of the composite material. It has a synergistic improvement effect. In addition, the improvement of thermal conductivity and mechanical properties of composite materials can also improve the tribological properties of materials under high PV.

In summary, the high-strength, low-friction and wear-resistant resin-based composite material of the present invention simultaneously has excellent mechanical strength, thermal conductivity and wear resistance, and has broad applications in aerospace, transportation, electronic devices, high-end mechanical equipment and other fields. prospect.

Claims (9)

1. The high-strength low-friction wear-resistant resin matrix composite is characterized by being prepared from the following raw materials in parts by weight: 10-200 parts of resin matrix, 5-80 parts of solid lubricant and 1-60 parts of carbon fiber; the carbon fiber comprises a carbon fiber A and a carbon fiber B, wherein the average length of the carbon fiber A is 0.1-3mm, the average diameter of the carbon fiber A is 1-20 mu m, the average length of the carbon fiber B is 1-20mm, and the average diameter of the carbon fiber B is 1-20 mu m.

2. The high-strength low-friction wear-resistant resin-based composite material according to claim 1, which is characterized by being prepared from the following raw materials in parts by weight: 20-100 parts of resin matrix, 10-50 parts of solid lubricant and 10-40 parts of carbon fiber; the carbon fiber consists of carbon fiber A and carbon fiber B, wherein the weight ratio of the carbon fiber A to the carbon fiber B is (1-3): 1-3.

3. The high-strength low-friction wear-resistant resin-based composite material according to claim 2, which is characterized by being prepared from the following raw materials in parts by weight: 56 parts of a resin matrix, 24 parts of a solid lubricant and 20 parts of carbon fibers; the carbon fiber consists of carbon fiber A and carbon fiber B, wherein the weight ratio of the carbon fiber A to the carbon fiber B is 1:3.

4. The high-strength low-friction wear-resistant resin-based composite material according to claim 1, wherein the carbon fibers a have an average length of 0.2 to 1mm, an average diameter of 2 to 10 μm, and the carbon fibers B have an average length of 2 to 10mm and an average diameter of 2 to 10 μm.

5. The high strength, low friction, wear resistant resin based composite material according to claim 4, wherein the carbon fibers a have an average length of 0.3mm, an average diameter of 6 μm, and the carbon fibers B have an average length of 3mm and an average diameter of 7 μm.

6. The high strength, low friction, wear resistant resin matrix composite according to any one of claims 1 to 5, wherein the resin matrix is a thermoplastic resin, the solid lubricant is polytetrafluoroethylene or a derivative thereof, and the carbon fibers are polyacrylonitrile-based or pitch-based chopped carbon fibers.

7. The high strength, low friction, wear resistant resin matrix composite of claim 6 wherein said resin matrix is polyphenylene sulfide, said derivative of polytetrafluoroethylene is radiation modified polytetrafluoroethylene, and said carbon fibers are polyacrylonitrile-based chopped carbon fibers.

8. A method of preparing the high strength low friction, wear resistant resin based composite material according to any one of claims 1 to 7, said method comprising the steps of: and drying, premixing, and melt blending the raw materials to obtain the product.

9. Use of the high strength low friction wear resistant resin based composite material according to any one of claims 1-8 in the field of aerospace, transportation, electronics and high end mechanical equipment.