Self-lubricating wear-resistant PTFE (polytetrafluoroethylene) composite material and preparation method thereof

A composite material, PTFE technology, applied in the field of self-lubricating and wear-resistant PTFE composite materials and its preparation, can solve the problems of large cold flow, poor dimensional stability, insufficient wear resistance, etc., to improve wear resistance and high temperature Abrasion resistance and the effect of extending the service life

Active Publication Date: 2019-08-02
广东欧特派环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For high-frequency equipment, especially dispensing machine equipment, the sealing ring (also called dispensing machine universal plug seal) mainly uses an oil-containing sealing ring to improve its lubrication and wear resistance, but during the use of the equipment Medium oil is easy to be carried away, resulting in loss of oil, and also affects product performance, and if the seal ring is not replenished with oil in time, it will easily cause wear of the seal ring and leakage
[0003] Polytetrafluoroethylene (PTFE) has excellent high and low temperature resistance, corrosion resistance, aging resistance, high insulation, non-stick, self-lubrication and other properties, but due to poor dimensional stability, poor thermal conductivity, low hardness, easy to wear, especially under load It shows a large cold flow (creep), which limits its application in the fields of mechanical bearing, friction and wear, and seal lubrication.
[0004] Even if the modified PTFE sealing ring is used in China to try to improve its self-lubricating wear resistance, its application in the dispensing machine equipment is still insufficient in wear resistance and has a short service life, which increases the number of equipment maintenance and costs

Method used

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  • Self-lubricating wear-resistant PTFE (polytetrafluoroethylene) composite material and preparation method thereof
  • Self-lubricating wear-resistant PTFE (polytetrafluoroethylene) composite material and preparation method thereof
  • Self-lubricating wear-resistant PTFE (polytetrafluoroethylene) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A self-lubricating wear-resistant PTFE composite material, comprising the following raw materials in parts by weight:

[0036]

[0037] The density of the PTFE is 2.16g / cm 3 , the PTFE is a polytetrafluoroethylene powder with a mesh number of 500.

[0038] The reinforcing fiber is a mixture of carbon fiber and alumina fiber at a weight ratio of 7:1.5; the reinforcing fiber is fiber powder with a mesh number of 600.

[0039] The graphene is graphene with a mesh number of 1300.

[0040] The graphene is graphene oxide treated with a silane coupling agent.

[0041] The silane coupling agent is γ-aminopropyltriethoxysilane.

[0042] The lubricant is formed by mixing tungsten disulfide and boron nitride at a weight ratio of 2.5:1.

[0043] The preparation method of above-mentioned self-lubricating wear-resistant PTFE composite material, comprises the steps:

[0044] (A1), take by weight PTFE, reinforcing fiber, graphene, carbon black and lubricant, standby;

[0045] ...

Embodiment 2

[0050] A self-lubricating wear-resistant PTFE composite material, comprising the following raw materials in parts by weight:

[0051]

[0052] The density of the PTFE is 2.1g / cm 3 , the PTFE is a polytetrafluoroethylene powder with a mesh number of 300.

[0053] The reinforcing fiber is formed by mixing carbon fiber and alumina fiber at a weight ratio of 5:1; the reinforcing fiber is fiber powder with a mesh number of 500.

[0054] The graphene is graphene with a mesh number of 1200.

[0055] The graphene is graphene oxide treated with a silane coupling agent.

[0056] The silane coupling agent is γ-(2,3-glycidoxy)propyltrimethoxysilane.

[0057] The lubricant is formed by mixing tungsten disulfide and boron nitride at a weight ratio of 2:1.

[0058] The preparation method of above-mentioned self-lubricating wear-resistant PTFE composite material, comprises the steps:

[0059] (A1), take by weight PTFE, reinforcing fiber, graphene, carbon black and lubricant, standby; ...

Embodiment 3

[0065] A self-lubricating wear-resistant PTFE composite material, comprising the following raw materials in parts by weight:

[0066]

[0067] The density of the PTFE is 2.2g / cm 3 , the PTFE is a polytetrafluoroethylene powder with a mesh number of 600.

[0068] The reinforcing fiber is formed by mixing carbon fiber and alumina fiber at a weight ratio of 8:2; the reinforcing fiber is fiber powder with a mesh number of 800.

[0069] The graphene is graphene with a mesh number of 1500.

[0070] The graphene is graphene oxide treated with a silane coupling agent.

[0071] The silane coupling agent is γ-mercaptopropyltriethoxysilane.

[0072] The lubricant is formed by mixing tungsten disulfide and boron nitride at a weight ratio of 3:1.

[0073] The preparation method of above-mentioned self-lubricating wear-resistant PTFE composite material, comprises the steps:

[0074] (A1), take by weight PTFE, reinforcing fiber, graphene, carbon black and lubricant, standby;

[0075...

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Abstract

The invention relates to the technical field of oil-free lubricating sealing materials, in particular to a self-lubricating wear-resistant PTFE (polytetrafluoroethylene) composite material and a preparation method thereof. The composite material comprises the following raw materials: PTFE, reinforced fibers, graphene, carbon black and a lubricant. The PTFE composite material is particularly suitable for being used as a sealing ring in glue dispenser equipment, has good self-lubricating property, good wear resistance, low friction coefficient, high and low temperature resistance, and long service life, reduces maintenance times and costs of the glue dispenser equipment, and avoids use cost increase caused by relying on imported sealing materials.

Description

technical field [0001] The invention relates to the technical field of oil-free lubricating sealing materials, in particular to a self-lubricating wear-resistant PTFE composite material and a preparation method thereof. Background technique [0002] For high-frequency equipment, especially dispensing machine equipment, the sealing ring (also called dispensing machine universal plug seal) mainly uses an oil-containing sealing ring to improve its lubrication and wear resistance, but during the use of the equipment The medium oil is easy to be carried away, resulting in loss of oil, and also affects the performance of the product. If the oil is not replenished in time, the sealing ring will easily cause the sealing ring to wear and leak. [0003] Polytetrafluoroethylene (PTFE) has excellent high and low temperature resistance, corrosion resistance, aging resistance, high insulation, non-stick, self-lubrication and other properties, but due to poor dimensional stability, poor th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08K13/06C08K9/06C08K3/04C08K7/06C08K7/08C08K3/30C08K3/38
CPCC08K3/30C08K3/38C08K7/06C08K7/08C08K9/06C08K13/06C08K2003/3009C08K2003/385C08K2201/005C08K3/042C08L27/18
Inventor 隆新祥黄尚英苏丽凤
Owner 广东欧特派环保材料科技有限公司
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