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High-temperature-resistant and wear-resistant fluororubber sealing element and preparation method thereof

A technology of fluorine rubber and seals, which is applied in the field of high temperature and wear-resistant fluorine rubber seals and its preparation, can solve the problems of temperature resistance, wear resistance, and strength to be improved, and achieve the improvement of comprehensive performance, increase of vulcanization density, The effect of improving high temperature resistance

Inactive Publication Date: 2018-09-07
ANHUI PROPELLENT HEAT TRANSFER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase in engine output power, efficiency improvement, environmental protection requirements, and maintenance-free trends in construction machinery and other industries have put forward higher and higher requirements for the high temperature resistance, wear resistance, and strength of materials used in the manufacture of seals. , but the temperature resistance, wear resistance and strength of the existing fluororubber materials still need to be improved, which can no longer meet the actual needs

Method used

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  • High-temperature-resistant and wear-resistant fluororubber sealing element and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A heat-resistant and wear-resistant fluororubber seal, made of the following raw materials in parts by weight: 55 parts of 26-type fluororubber, 35 parts of 23-type fluororubber, 18 parts of medium-particle pyrolysis carbon black, and organically modified concave-convex clay 8 parts, 1 part of calcium silicate, 1 part of talcum powder, 2 parts of hydroxyfluorosilicone oil, 2.5 parts of magnesium oxide, 0.45 parts of silane coupling agent KH-460, 3 parts of perfluoromethylphenyl hydroxyperoxide, triene 0.4 parts of propyl isocyanurate, 0.5 parts of zinc stearate, and 0.3 parts of carnauba wax.

[0023] The preparation method of organically modified attapulgite is as follows: add 0.05 parts of octadecyltrimethylammonium bromide to 60 parts of water and stir, after completely dissolving, add 1 part of attapulgite, stir for 5 hours; then suction filter to obtain The filter cake is vacuum-dried and crushed to obtain the organically modified attapulgite.

[0024] The prepara...

Embodiment 2

[0030] A heat-resistant and wear-resistant fluororubber seal, made of the following raw materials in parts by weight: 60 parts of 26-type fluororubber, 20 parts of 23-type fluororubber, 12 parts of medium-particle pyrolysis carbon black, and organically modified concave-convex clay 6 parts, 1.8 parts of calcium silicate, 0.5 parts of talc, 2 parts of hydroxyfluorosilicone oil, 2 parts of magnesium oxide, 0.4 parts of silane coupling agent KH-550, 2.5 parts of perfluoromethylphenyl hydroxyperoxide, triene 0.7 parts of propyl isocyanurate, 0.2 parts of zinc stearate, and 0.5 parts of carnauba wax.

[0031] The preparation method of organic modified attapulgite is as follows: add 0.05 part of dodecyl dimethyl ammonium chloride to 60 parts of water and stir, after completely dissolving, add 1 part of attapulgite, stir and react for 3 hours; then suction filter to obtain The filter cake is vacuum-dried and crushed to obtain the organically modified attapulgite.

[0032] The prepar...

Embodiment 3

[0038] A heat-resistant and wear-resistant fluororubber seal, made of the following raw materials in parts by weight: 70 parts of 26-type fluororubber, 25 parts of 23-type fluororubber, 20 parts of medium-particle pyrolysis carbon black, and organically modified concave-convex clay 8.5 parts, 1 part of calcium silicate, 0.8 parts of talc, 2.5 parts of hydroxyfluorosilicone oil, 2.5 parts of magnesium oxide, 0.5 parts of silane coupling agent KH-560, 3 parts of perfluoromethylphenyl hydroxyperoxide, triene 0.5 parts of propyl isocyanurate, 0.3 parts of zinc stearate, and 0.2 parts of carnauba wax.

[0039] The preparation method of organically modified attapulgite is as follows: add 0.01 part of octadecyltrimethylammonium bromide to 40 parts of water and stir, after completely dissolving, add 1 part of attapulgite, stir for 4 hours; then suction filter to obtain The filter cake is vacuum-dried and crushed to obtain the organically modified attapulgite.

[0040] The preparation...

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Abstract

The invention provides a high-temperature-resistant and wear-resistant fluororubber sealing element and a preparation method thereof. The high-temperature-resistant and wear-resistant fluororubber seal element is prepared from the following raw materials in parts by weight: 50-70 parts of 26 type fluororubber, 20-45 parts of 23 type fluororubber, 12-20 parts of medium-particle pyrolysis carbon black, 5-8.5 parts of organic modified attapulgite, 1-1.8 parts of calcium silicate, 0.5-1 part of a talc powder, 1.5-2.5 parts of hydroxyl fluorosilicone oil, 1.5-2.5 parts of magnesium oxide, 0.3-0.5 part of a silane coupling agent, 2-3 parts of perfluoromethyl phenyl hydroxyl peroxide, 0.4-0.7 part of triallyl isocyanurate, and 0.5-1 part of a processing aid. The prepared sealing element has excellent high-temperature resistance and wear resistance and high strength, and the service life of the sealing element can be effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of seals, in particular to a high-temperature and wear-resistant fluororubber seal and a preparation method thereof. Background technique [0002] As a special synthetic polymer elastomer, fluororubber has high and low temperature resistance, oil resistance, solvent resistance, strong oxidation resistance and good sealing stability. It has the best comprehensive performance among all synthetic rubbers, commonly known as "rubber king". It is mainly used to make rubber products with high temperature resistance, oil resistance and medium resistance, such as various seals, diaphragms, hoses and tapes, etc. It can also be used as wire sheaths, anti-corrosion linings, etc. It has been widely used in the fields of aviation, automobile and petrochemical industry. [0003] At present, the seals used in automobiles and construction machinery are mostly made of fluorine rubber, nitrile rubber or neoprene, among which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L83/08C08K13/06C08K9/04C08K3/34C08K3/04C08K3/22C08K5/14C08K5/3492C09K3/10
CPCC08K2003/222C08K2201/014C08L27/12C08L2201/08C08L2205/025C08L2205/035C09K3/10C09K2003/1078C08L83/08C08K13/06C08K9/04C08K9/06C08K3/346C08K3/04C08K3/22C08K5/14C08K5/34924
Inventor 张凌霞
Owner ANHUI PROPELLENT HEAT TRANSFER TECH CO LTD
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