Valve sealing gasket sizing material and preparation method thereof

A valve sealing and gasketing technology, applied in the field of synthetic rubber, can solve the problems of uneven dispersion of processing aids, unfavorable occupational safety of workers, poor tearing and oil resistance, etc., to achieve good mechanical properties, improve comprehensive performance, and improve high resistance low temperature effect

Active Publication Date: 2013-04-03
平湖市博宏塑料制品厂
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the improvement of the process, it overcomes the slow "eating" of fluorosilicone rubber in the open mill, easy sticking to the roller, high dust, high labor intensity, uneven dispersion of processing aids, low production efficiency, poor tear and oil resistance in the prior art, Detrimental to workers' occupational safety and other disadvantages

Method used

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  • Valve sealing gasket sizing material and preparation method thereof

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Embodiment Construction

[0020] A kind of preparation of automobile valve oil seal rubber,

[0021] Weigh 25kg of fluorosilicone rubber, 55kg of hydrogenated nitrile rubber, 20kg of chlorosulfonated polyethylene rubber TS-320 (Tosoh Japan), 2.5kg of γ-methacryloxypropyl trimethoxysilane, diphenylsilane Diol 1.5kg, modified tree ash 15kg, ferrocene 2.5kg, dicumyl peroxide DCP 0.5kg, high wear-resistant carbon black N330 25kg, precipitated white carbon black 22kg, light calcium carbonate 6kg, zinc oxide 3kg, calcium stearate 2kg, alumina 2kg, dolomite 7kg, modified iron tailings powder 14kg, accelerator MBTS0.2kg, sulfur 1.5kg, antioxidant RD 1.5kg, antioxidant MB1.5kg, 2-mercaptan Benzene imidazole 1.5kg, methyltrimethoxysilane 2kg, paraffin 2.5kg,

[0022] The preparation method comprises the following steps:

[0023] (1) Preparation method of modified tree ash:

[0024] Add triphenyl phosphate with 1-2% weight of tree ash to the tree ash and mix, soak with 15-20% hydrochloric acid for 1-2 hours, ...

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Abstract

The invention discloses a valve sealing gasket sizing material, which is prepared from the following raw materials in parts by weight: 20-30 parts of fluorosilicone rubber, 50-60 parts of hydrogenated nitrile-butadiene rubber, 15-25 parts of chlorosulfonated polyethylene rubber TS-320 (TOSOH, Japan), 2-3 parts of gamma-methacryloxypropyltrimethoxysilane, 1-2 parts of diphenyl silandiol, 14-16 parts of modified tree ash, 2-3 parts of ferrocene, 0.2-0.6 part of dicumyl peroxide (DCP), 20-30 parts of high-abrasion resistant carbon black N330, 20-25 parts of precipitated white carbon black, 5-7 parts of light calcium carbonate, 2-4 parts of zinc oxide, 1-3 parts of calcium stearate, 1-3 parts of aluminium oxide, 5-8 parts of dolomite, 13-15 parts of modified iron tailing powder, 0.1-0.3 part of accelerating agent MBTS, 1-2 parts of sulphur, 1-2 parts of anti-aging agent RD, 1-2 parts of anti-aging agent MB, 1-2 parts of benzimidazole-2-thiol, 1-3 parts of methyltrimethoxy silane, and 2-3 parts of paraffin. The sizing material of the rubber has excellent high and low temperature-resistant, oil-proof, solvent-resistant and chemical-resistant performance, and at the same time is good in mechanical property and low in cost.

Description

technical field [0001] The invention relates to the field of synthetic rubber, in particular to a rubber material for valve sealing pads and a preparation method thereof. Background technique [0002] Fluorosilicone rubber has excellent high and low temperature resistance, oil resistance, solvent resistance and chemical resistance. A new type of low temperature sealing material and fuel oil hose. [0003] In the prior art, a basic fluorosilicone raw rubber is used to prepare fluorosilicone compounded rubber through mixing. Due to the different molecular weight distribution and average molecular weight of different fluorosilicone raw rubber, the properties of fluorosilicone rubber compounded by mixing a single raw rubber are different. The high molecular weight of raw rubber has good tensile strength and tear strength. Good oil resistance, but poor processability and difficult mixing. The low molecular weight of raw rubber makes it difficult to have good tensile strength a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L83/08C08L23/34C08K13/08C08K9/04C08K9/02C08K3/04C08K3/26C08K3/22C08K5/098C08K3/34C08K3/36
Inventor 王立新
Owner 平湖市博宏塑料制品厂
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