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Waterproof silicone rubber compound and preparation method thereof

A technology of mixing rubber and silicone rubber, which is applied in the field of silicone rubber, can solve the problems of short service life and poor water resistance, achieve good heat resistance, high mechanical properties, and broaden the application range

Inactive Publication Date: 2015-01-28
天长市荣盛有机硅科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The silicone rubber compound currently on the market has the disadvantage of poor water resistance, and its service life is short in a humid environment, which cannot meet the needs of the market. Therefore, it is necessary to modify the silicone rubber to obtain a silicone rubber compound with excellent water resistance. Rubber mixing

Method used

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  • Waterproof silicone rubber compound and preparation method thereof

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Embodiment Construction

[0010] A water-resistant silicone rubber compound made of the following raw materials by weight (kg): methyl vinyl phenyl silicone rubber 70, polysulfone ether 40, 1,1-di-tert-butylperoxycyclohexane 2.5, Orthoethyl silicate 6, zinc methacrylate 3.5, bismaleimide 2.5, spindle oil 8, subspherical silicon micropowder 16, dipropyl silicon glycol 4, magnesite powder 12, isopropyl tri(di Octyl pyrophosphate acyloxy) titanate 1.5, Fischer-Tropsch wax 4.5, 2-aminopropane 1.5, N,N'-diphenylethylenediamine 2.5, additive 3;

[0011] The preparation method of described auxiliary agent is as follows: a, get the raw material of following weight (kg): rosin pentaerythritol ester 4, 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate 3, zirconium fluoride 8. Thiophosphoric acid triphenyl isocyanate 3, 4,4′-biphenyl diphenol 1.5, triisopropanolamine boronate 4, methyl 2,2-dithienyl glycolate 2.5, bone glue powder 6 , tungsten carbide 8, decyl tetradecyl cetyl stearate 3.5, 2-(4-morpholino d...

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Abstract

The invention discloses a waterproof silicone rubber compound and a preparation method thereof. The waterproof silicone rubber compound consists of the following raw materials by weight: 60-80 parts of methyl vinyl phenyl polysiloxane rubber, 30-50 parts of polyethersulfone, 2-3 parts of 1,1-Di(tert-butylperoxy) cyclohexane, 4-8 parts of tetraethyl orthosilicate, 2.5-4.5 parts of zinc methacrylate, 2-3 parts of bismaleimide, 5-10 parts of spindle oil, 12-18 parts of sub spherical silica powder, 3-5 parts of dipropylene glycol, 10-15 parts of magnesite powder, 1-2 parts of isopropyl tri(dioctylpyrophosphate) titanate, 3-6 parts of Fischer Tropsch wax, 1-2 parts of 2-amino propane, 2-3 parts of N,N'-diphenylethylenediamine and 3-4 parts of an auxiliary agent. The silicone rubber compound provided by the invention has excellent hydrolysis resistance, can resist hot water or steam of 150 to 160 DEG C while still keeping high mechanical properties, also has good heat resistance, creep resistance, impact resistance and chemical corrosion resistance, and can greatly expand the scope of application.

Description

technical field [0001] The invention relates to a water-resistant silicone rubber compound 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. At present, the silicone rubber compound on the market has the disadvantage of poor water resistance, and its service life is short in a humid environment, which cannot meet the needs of the market. Therefore, it is necessary to modify the silicone rubber to obtain a silicone rubber compound with excellent water resistance. Rubber mixi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L81/06C08K13/06C08K5/14C08K7/18C08K3/34C08K5/18C08K5/47C08K3/16C08K3/14
Inventor 李保生
Owner 天长市荣盛有机硅科技有限公司
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