Method for improving wear resistance of polymer material by composite filling

A technology of polymer materials and wear resistance, which is applied in the field of polymer composite materials, can solve the problems of grinding metal surface oxidation, friction and wear reduction, etc., and achieve the effects of improving friction and wear resistance, improving performance, and facilitating processing

Inactive Publication Date: 2019-12-06
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, reinforcing materials with high hardness and elastic modulus are likely to cause serious oxidation on the metal surface of the grinding surface, which is not conducive to the reduction of friction and wear.

Method used

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  • Method for improving wear resistance of polymer material by composite filling
  • Method for improving wear resistance of polymer material by composite filling

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1 A method for composite filling to improve the wear resistance of polymer materials. The method refers to that polytetrafluoroethylene, cleaned carbon fiber, aramid fiber, and graphite powder are fully dried according to the material drying parameters, and then press The volume fraction is 75:10:10:5 and dry polytetrafluoroethylene, carbon fiber, aramid fiber and graphite powder are mixed, and the polytetrafluoroethylene-based composite material is obtained by cold pressing and sintering. Among them, the process parameters of cold-press sintering are cold-press mixed powder at 10-40MPa for 10-60min, and then transfer to the sintering furnace for 1-4h at 300-400°C.

[0029] The resulting PTFE-based composite material was cut into 4×4×12mm 3 The sample used for the test was installed on a TRM1000 pin-on-disk friction tester from Wazau, Germany for tribological tests. Test conditions: the load is 3MPa, the line speed is 0.5m / s, and the test time is 2h. From ...

Embodiment 2

[0031] Embodiment 2 A kind of composite filling improves the method for wear-resisting performance of polymer material, and this method refers to that polyoxymethylene pellets, cleaned glass fiber and carbon fiber, and graphite powder are fully dried according to the material drying parameters, and then press 60 : 10:20:10 volume ratio into a 185 ° C internal mixer for melting and banburying for 10 minutes to obtain a homogeneously mixed polyoxymethylene-based composite material. Then, the mixture after banburying was hot-pressed at 190°C with a flat vulcanizer under a pressure of 10MPa to obtain a modified polyoxymethylene-based material.

Embodiment 3

[0032] Embodiment 3 A kind of composite filling improves the method for wear-resisting performance of polymer material, and this method refers to first fully drying polyoxymethylene pellets, cleaned glass fiber and aramid fiber, molybdenum disulfide according to material drying parameters, and then According to the volume ratio of 60:20:10:10, it was added to a 185°C internal mixer for melting and banburying for 10 minutes to obtain a homogeneously mixed polyoxymethylene-based composite material. Then, the mixture after banburying was hot-pressed at 190°C with a flat vulcanizer under a pressure of 10MPa to obtain a modified polyoxymethylene-based material.

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Abstract

The invention relates to a method for improving wear resistance of a polymer material by composite filling. According to the method, first a polymer resin matrix, a cleaned micron-reinforcing material, and a solid lubricant are fully dried according to material drying parameters, and then according to different molding requirements of the polymer resin matrix, the cleaned micron-reinforcing material and the solid lubricant with different elastic moduli and hardness are simultaneously added into the polymer matrix with the help of corresponding equipment, and a composite material is prepared ora granular material is extruded. For the first time, a combination of reinforcing materials with different physical properties is used to jointly regulate tribology properties of a polymer, the process is simple, the cost is low, and production is easy. The prepared anti-friction and wear-resistant polymer composite material can be widely used in automobiles, aerospace, machinery manufacturing and other fields as important components of polymer sliding bearings, sealing rings, thrust washers and other moving mechanisms.

Description

technical field [0001] The invention relates to the technology and application field of polymer composite materials, in particular to a method for composite filling to improve the wear resistance of polymer materials. Background technique [0002] Polymer composite materials have replaced traditional metal materials and have been widely used in high-tech industries, such as aerospace, ships, automobile manufacturing and other fields. Depending on the resin matrix, polymers can be classified into thermoset and thermoplastic. In the past half a century, thermosetting and thermoplastic resin-based composite materials have been generally recognized by the engineering community as new materials, and have entered the stage of industrial production, and their development momentum and application speed are quite rapid. [0003] Over the past two decades, tribology workers have conducted in-depth research on the tribological properties of polymer composites, developed a variety of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L59/00C08L63/00C08L79/08C08L77/10C08K7/14C08K7/06C08K3/04C08K3/38C08K3/30C08K3/34C08K3/16
CPCC08K3/04C08K3/38C08K7/06C08K7/14C08K2003/162C08K2003/3009C08K2003/385C08K2201/003C08K2201/016C08L27/18C08L59/00C08L63/00C08L79/08C08L2205/03C08L2205/16C08L77/10C08K3/30C08K3/16C08K3/34
Inventor 张利刚张嘎赵福燕李贵涛郭月霞
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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