Foamed silicone rubber and preparation method thereof

A technology of foamed silicone rubber and vinyl silicone rubber, which is applied in the field of foamed silicone rubber and its preparation, can solve the problems of difficult control of density and cell structure, damage to the mechanical properties of silicone rubber, and no foaming, etc., to achieve It is conducive to thermal decomposition, improving mechanical properties and compression set properties, and improving the effect of heat aging resistance
CN109486203AInactive Publication Date: 2019-03-19安徽旭川新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
安徽旭川新材料科技有限公司
Publication Date
2019-03-19
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses foamed silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber materials. Vinyl silicone rubber containing different amounts ofethylene is taken as a base rubber, the introduction of a small amount of ethylene is beneficial to improving vulcanization activity, increasing the selection range of organic peroxide vulcanizing agents, improving the heat aging resistance, mechanical strength and compression permanent deformation performance of vulcanized rubber; and meanwhile, the foamed silicone rubber is prepared by adoptinga method combining freezing and two-stage vulcanization reaction, and the two-stage vulcanization reaction is beneficial to avoiding the occurrence of over-sulfur, thus improving the mechanical properties and compression permanent deformation properties of a foamed silicone rubber product. Combined with the freezing process, the foaming uniformity and mechanical properties of the prepared productare improved, and the tensile strength of the prepared foamed silicone rubber reaches 0.87 Mpa.
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Description

Technical field

[0001] The invention belongs to the technical field of silicone rubber materials, and specifically relates to a foamed silicone rubber and a preparation method thereof. Background technique

[0002] Foamed silica gel, also known as silica gel foam, is a flexible and porous polymer elastomer that combines the characteristics of silica gel with the characteristics of foam materials made by foaming silicone rubber. Silicone foam not only maintains the excellent properties of silicone, such as non-toxic, high and low temperature resistance, insulation, and weather resistance, but also has the characteristics of light weight, sound absorption, and earthquake resistance. It is used as high performance such as damping, vibration reduction, sound insulation, and heat insulation. Materials are widely used in fields such as national defense, aerospace, transportation, electronics industry, construction and furniture.

[0003] The current foaming process for the production of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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