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Wear-resistant PTFE composite material and preparation method thereof

A composite material, PTFE technology, applied in the field of wear-resistant PTFE composite material and its preparation, can solve the problems of low friction coefficient, large friction and wear, poor dimensional stability, etc.

Inactive Publication Date: 2019-03-19
NANJING COMPTECH COMPOSITES CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polytetrafluoroethylene (PTFE) material itself has excellent chemical resistance and weather resistance, low friction coefficient, and good thermal stability (can be used for a long time at -260 ° C ~ 260 ° C), but pure PTFE has cold flow and stable dimensions Poor performance, large friction and wear, etc.

Method used

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  • Wear-resistant PTFE composite material and preparation method thereof
  • Wear-resistant PTFE composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1-3

[0022] The preparation method of this wear-resistant PTFE composite material is:

[0023] (1) Weigh PTFE suspended fine powder, carbon fiber, glass fiber, graphite, and molybdenum disulfide in proportion, mix and stir evenly;

[0024] (2) Put the mixed material into the mold for cold pressing under the pressure of 80~100MPa, and hold the pressure for 1-5min;

[0025] (3) Put it into a sintering furnace or a nitrogen furnace for sintering at 380±5°C for 3~6h;

[0026] (4) After the furnace is lowered to room temperature, it is taken out, and the blank is machined to obtain a shaped product.

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PUM

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Abstract

The invention discloses a wear-resistant PTFE composite material. The wear-resistant PTFE composite material is characterized by being prepared from the following components in percent by mass: 60-77%of PTFE, 5-10% of carbon fibers, 6-10% of glass fibers, 10-13% of graphite and 2-7% of molybdenum disulfide. The design balances the mechanical properties and friction property of the material, improves the wear resistance of the material to the maximum extent while reducing the tensile performance to the minimum extent, reduces the sliding friction coefficient of the product and improves the dimensional stability of the product effectively and prolongs the service life effectively. The formula is suitable for a sealing part which is good in wear resistance and bearing capacity or a frictionstructural part needing to reciprocate, so that the friction noise can be reduced, the grinding amount entering a circulating region is reduced, and the risk of strain breakage in assembly and use isreduced.

Description

technical field [0001] The invention relates to a wear-resistant PTFE composite material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Polytetrafluoroethylene (PTFE) material itself has excellent chemical resistance and weather resistance, low friction coefficient, and good thermal stability (can be used for a long time at -260 ° C ~ 260 ° C), but pure PTFE has cold flow and stable dimensions Poor performance, large friction and wear and other shortcomings. Contents of the invention [0003] The purpose of the present invention is to provide a wear-resistant PTFE composite material with good mechanical properties and wear-resistant properties. [0004] In order to achieve the above object, the technical solution adopted in the present invention is: a wear-resistant PTFE composite material, characterized in that: it is composed of the following components by mass percentage: [0005] PTFE: 60~77% ...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08K7/06C08K7/14C08K3/04C08K3/30C08K7/00C08K13/04
CPCC08K3/04C08K3/30C08K7/00C08K7/06C08K7/14C08K13/04C08K2003/3009C08L27/18
Inventor 杨文光靳予孙克原王孝刚夏炎陈朝曦林丰焦小东陈佩民徐小曼刘雪梅
Owner NANJING COMPTECH COMPOSITES CORP
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