Oil-resistant low-pressure-change skeleton oil seal material for reciprocating dynamic sealing

A skeleton oil seal and low-pressure change technology, applied in the field of skeleton oil seals, can solve the problems of difficult to meet the use requirements of oil seals, oil seals, oil resistance, acid and alkali resistance, and poor pressure change resistance, so as to increase the scope of use, reduce raw material costs, and reduce use. cost effect

Inactive Publication Date: 2019-04-02
CHANGSHA JIAYI SEALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing oil seals have problems such as oil resistance, acid and alkali resistance, and pressure change resistance, and it is becoming more and more difficult to meet the use requirements of oil seals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 A kind of preparation method of toughening filler

[0023] A preparation method for toughening filler, comprising the following steps:

[0024] Calcinate 100 parts by weight of kaolin at 1050°C for 2 hours, take it out and cool it down naturally, and pulverize it into powder, soak it in hydrochloric acid with a mass percentage of 12% for 1 hour, then rinse it with distilled water until it is neutral, and mix it with 45 parts by weight of polyimide Mix the resin powder, stir and heat the reaction at 420°C for 2.5 hours, then add 12 parts by weight of silicon nitride, 15 parts by weight of barium metaborate, 5 parts by weight of carbon black, and 46 parts by weight of benzyltriphenylphosphine chloride after cooling. After stirring and mixing evenly, raise the temperature to 280°C, stir and heat for reaction for 1 hour, and after cooling, perform ultrafine pulverization to obtain the toughening filler.

Embodiment 2

[0025] Example 2 An oil-resistant and low-pressure variable skeleton oil seal material for reciprocating dynamic seals

[0026] A framework oil seal material resistant to oil and low pressure deformation for reciprocating dynamic seals, comprising the following components in parts by weight:

[0027] 220 parts by weight of EPDM rubber, 85 parts by weight of silicone rubber, 60 parts by weight of natural rubber, 45 parts by weight of fluororubber, 35 parts by weight of polyvinyl chloride resin, 15 parts by weight of ultra-high molecular weight polyethylene fiber, modified polymethyl 9 parts by weight of ethylene carbonate, 7 parts by weight of ultrafine polytetrafluoroethylene powder, 1 part by weight of nano-tungsten carbide, 3 parts by weight of zinc acrylate, 1 part by weight of rock wool fiber, 3 parts by weight of dimethyl phthalate, 1 part by weight of carbon steel fiber, 2 parts by weight of benzyltriphenylphosphine chloride, 3 parts by weight of sulfur, 1 part by weight...

Embodiment 3

[0032] Example 3 An oil-resistant and low-pressure variable skeleton oil seal material for reciprocating dynamic seals

[0033] A framework oil seal material resistant to oil and low pressure deformation for reciprocating dynamic seals, comprising the following components in parts by weight:

[0034] 220 parts by weight of EPDM rubber, 85 parts by weight of silicone rubber, 60 parts by weight of natural rubber, 45 parts by weight of fluororubber, 35 parts by weight of polyvinyl chloride resin, 15 parts by weight of ultra-high molecular weight polyethylene fiber, modified polymethyl 11 parts by weight of ethylene carbonate, 9 parts by weight of ultrafine polytetrafluoroethylene powder, 3 parts by weight of nano-tungsten carbide, 5 parts by weight of zinc acrylate, 3 parts by weight of rock wool fiber, 5 parts by weight of dimethyl phthalate, 3 parts by weight of carbon steel fiber, 4 parts by weight of benzyltriphenylphosphine chloride, 5 parts by weight of sulfur, 3 parts by w...

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PUM

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Abstract

The invention discloses an oil-resistant low-pressure-change skeleton oil seal material for reciprocating dynamic sealing, wherein the oil-resistant low-pressure-change skeleton oil seal material comprises, by weight, 220 parts of ethylene propylene diene monomer, 85 parts of silicone rubber, 60 parts of natural rubber, 45 parts of fluororubber, 35 parts of polyvinyl chloride resin, 15 parts of ultrahigh molecular weight polyethylene fiber, 9-13 parts of modified poly(propylene carbonate), 7-11 parts of ultrafine polytetrafluoroethylene powder, 1-5 parts of nanometer tungsten carbide, 3-7 parts of zinc acrylate, 1-5 parts of rock wool fiber, 3-7 parts of dimethyl phthalate, 1-5 parts of carbon steel fiber, 2-6 parts of benzyltriphenylphosphonium chloride, and other components. According tothe present invention, the oil-resistant low-pressure-change skeleton oil seal material has characteristics of reasonable matching of various component, good sealing property, low raw material cost,can meet the requirements of the existing oil seal on oil resistance and pressure resistance, and can expand the use range of the oil seal, and the oil seal has advantages of excellent high-temperature resistance, excellent fire resistance, excellent flame retardant property, excellent anti-drag property, excellent wear resistance and the like, and is suitable for wide promotion.

Description

technical field [0001] The invention relates to the technical field of skeleton oil seals, in particular to a skeleton oil seal material for reciprocating dynamic seals that is resistant to oil and low pressure changes. Background technique [0002] Oil seal is the customary title of general seals, simply put, it is the seal of lubricating oil. It is a mechanical element used to seal grease (oil is the most common liquid substance in the transmission system, and also generally refers to the general liquid substance). It isolates the parts that need to be lubricated from the output parts in the transmission parts, so that the lubrication Oil leaks. The seals for static seals and dynamic seals are called oil seals. [0003] The representative form of oil seal is TC oil seal, which is a double-lip oil seal with self-tightening spring fully covered by rubber. Generally speaking, oil seal often refers to this kind of TC skeleton oil seal. Oil seals are generally divided into s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L83/04C08L7/00C08L27/12C08L27/06C08L23/06C08K13/04C08K7/10C08K3/14C08K5/098C08K3/04
CPCC08K2201/011C08L23/16C08L2205/035C08L2205/16C08L2207/068C08L83/04C08L7/00C08L27/12C08L27/06C08L23/06C08K13/04C08K7/10C08K3/14C08K5/098C08K3/04
Inventor 陈清华
Owner CHANGSHA JIAYI SEALS
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