Carbon nano-polytetrafluoroethylene valve seal ring filled with ceramic sol

A polytetrafluoroethylene and valve sealing technology, which is applied in the field of valve sealing rings, can solve the problems of easy aging, low strength and hardness, etc., and achieve the effects of good installation resilience, increased service life, and good extrusion deformation resistance

Inactive Publication Date: 2016-11-09
ANHUI RONGDA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carbon nanotube-reinforced PTFE composites have improved wear resistance, they are prone to aging and have low strength and hardness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A carbon nano-polytetrafluoroethylene valve sealing ring filled with ceramic sol, prepared from the following components by weight: 100 parts of polytetrafluoroethylene, 8 parts of carbon nanotubes, 10 parts of phenol, p-toluic acid 10 parts, 1 part of bentonite, 2 parts of barium strontium titanate, 8 parts of diphenyl ether, 1 part of butyl titanate, 25 parts of 60-70% sodium hypochlorite, 25 parts of EDTA, 50 parts of ammonia water, 100 parts of absolute ethanol, 3 parts of ionized water, 20 parts of glacial acetic acid, 40 parts of ethylene glycol methyl ether, 8 parts of dehydrating agent acetic anhydride, 3 parts of polyvinyl alcohol, 3 parts of barium sulfate, 1 part of molybdenum disulfide, 3 parts of silane coupling agent kh550, Ammonium chloride 10 parts, urea 30 parts, water 30 parts.

[0022] A carbon nano-polytetrafluoroethylene valve sealing ring filled with ceramic sol is prepared by the following steps:

[0023] (1) Activation of carbon nanotubes

[00...

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Abstract

The invention discloses a carbon nano-polytetrafluoroethylene valve seal ring filled with ceramic sol. The seal ring is prepared from, by weight, 100 parts of polytetrafluoroethylene, 5-8 parts of carbon nanotubes, 8-10 parts of phenol, 8-10 parts of p-toluic acid, 1-2 parts of bentonite, 1-2 parts of barium strontium titanate, 5-8 parts of diphenyl ether, 1-3 parts of butyl titanate, 20-25 parts of sodium hypochlorite with the concentration of 60%-70%, 20-25 parts of EDTA, 40-50 parts of ammonia water, 80-100 parts of absolute ethyl alcohol, 3-4 parts of deionized water, 10-20 parts of glacial acetic acid, 30-40 parts of ethylene glycol monomethyl ether, 8-10 parts of a dehydrating agent acetic anhydride, 3-4 parts of polyvinyl alcohol, 3-5 parts of barium sulfate, 1-2 parts of molybdenum disulfide, 1-3 parts of a silane coupling agent kh550, 9-10 parts of ammonium chloride, 30-35 parts of urea and 30-35 parts of water. The seal ring is resistant to aging and abrasion and long in service life.

Description

technical field [0001] The invention belongs to the field of valve sealing rings, and in particular relates to a carbon nano-polytetrafluoroethylene valve sealing ring filled with ceramic sol, a preparation method and application thereof. Background technique [0002] Polytetrafluoroethylene (PTFE) is characterized by its high chemical stability, strong high and low temperature resistance, outstanding non-stickiness, good lubricity, excellent electrical insulation, aging resistance, minimal water absorption, etc. , making it widely used in aerospace, petrochemical, mechanical industry, electronic appliances, food industry, textile and other fields. However, due to its poor mechanical properties, large linear expansion coefficient, poor creep resistance, poor wear resistance, low hardness, and difficulties in forming and secondary processing, its application range is limited to a certain extent. In order to improve and overcome the defects of pure PTFE, surface modification,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08K13/06C08K9/04C08K9/02C08K7/24C08K3/30C08K3/24C08K3/34
CPCC08K2201/003C08K2201/011C08L27/18C08L29/04C08K13/06C08K9/04C08K9/02C08K7/24C08K2003/3045C08K3/24C08K3/346
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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