Low compression permanent deformation silicon rubber compound and preparation method thereof

A permanent deformation and silicone rubber technology, applied in the field of silicone rubber, can solve the problems of limited application range and poor compression permanent deformation performance, and achieve the effects of low compression permanent deformation, high mechanical strength and good corrosion resistance

Inactive Publication Date: 2015-01-28
天长市荣盛有机硅科技有限公司
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  • Abstract
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Problems solved by technology

The silicone rubber compound currently on the market has the disadvanta...

Method used

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  • Low compression permanent deformation silicon rubber compound and preparation method thereof

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Embodiment Construction

[0010] A low compression set silicone rubber compound made from the following raw materials by weight (kg): methylphenyl silicone rubber 88, thermoplastic polyurethane elastomer 36, ethylene-methyl acrylate copolymer 20, 1,2- Polybutadiene 8, aluminum borate whisker 12, tert-butyl peroxide maleate 3, zinc sulfide 4, ethylene distearic acid amide 5, bisphenol A diglycidyl ether 6, magnesium carbonate 11, C5 petroleum Resin 8, Trimethylthiourea 2.5, N-cyclohexylthiophthalimide 1.5, Auxiliary 3;

[0011] The preparation method of the auxiliary agent is as follows: a. Take the following raw materials by weight (kg): rosin pentaerythritol ester 4, 4,5-epoxycyclohexane-1,2-diglycidyl 3, zirconium fluoride 7. Thiophosphoric acid triphenyl isocyanate 3, 4,4′-biphenyl diphenol 1.5, triisopropanolamine ring borate 4, 2,2-dithienyl glycolate methyl ester 3, bone glue powder 7 , tungsten carbide 9, decyl tetradecyl cetyl stearate 3.5, 2-(4-morpholino dithio) benzothiazole 2.5; b,...

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Abstract

The invention discloses a low compression permanent deformation silicon rubber compound and a preparation method thereof. The rubber compound consists of the following raw materials by weight: 72-96 parts of methyl phenyl silicone rubber, 26-44 parts of a thermoplastic polyurethane elastomer, 15-25 parts of an ethylene-methyl acrylate copolymer, 6-12 parts of 1,2-polybutadiene, 10-15 parts of aluminum borate whisker, 2-4 parts of tert-butyl monoperoxymaleate, 3-5 parts of zinc sulfide, 4-6 parts of ethylene-bis-stearamide, 5-8 parts of bisphenol A diglycidyl ether, 7-14 parts of magnesium carbonate, 5-10 parts of C5 petroleum resin, 2-3 parts of trimethyl thiourea, 1-2 parts of N-Cyclohexylthiophthalimide and 2-4 parts of an assistant. The silicon rubber compound provided by the invention has low compression permanent deformation, high mechanical strength, good corrosion resistance, fatigue resistance, aging resistance and temperature resistance, is especially suitable for the production of rubber seals and other rubber products, and has the advantages of simple preparation process, low cost and huge market prospects.

Description

technical field [0001] The invention relates to a silicone rubber compound with low compression set and a preparation method thereof, belonging to the technical field of silicone rubber. Background technique [0002] Silicone rubber is a polymer material with polysilane as the main chain. Due to the non-polar and weak intermolecular interactions of the main chain siloxane segment, it has good thermal stability, weather resistance, aging resistance and electrical properties. Its mechanical properties are quite stable in a wide temperature range (-50~120°C), and it has been widely used in aerospace, electronic and electrical industries and other fields. The silicone rubber compound currently on the market has the disadvantage of poor compression set performance, which limits its scope of application. Therefore, silicone rubber needs to be modified to obtain low compression set silicone rubber compounds. Contents of the invention [0003] The object of the present invention...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L75/04C08L23/08C08L47/00C08L57/02C08K13/06C08K9/04C08K7/08C08K3/30C08K5/20C08K3/26C09K3/10
Inventor 李保生
Owner 天长市荣盛有机硅科技有限公司
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