Preparation method of self-adhesion silicon rubber foam material

Abstract

The invention provides a preparation method of a self-adhesion silicon rubber foam material. The method comprises the following steps: mixing silicon rubber, a foaming agent, a vulcanizing agent, a reinforcing agent and micromolecular silicon oil as raw materials, milling and sheeting, and performing heat treatment foaming to obtain the self-adhesion silicon rubber foam material. Compared with an existing preparation method, the method has the characteristics that the used raw materials have few varieties and are simple and easy to prepare, low in cost and free of environmental pollution; moreover, by adopting the heat treatment foaming technology, the prepared silicon rubber material is a foam material for foaming, which is high in foaming efficiency, light in weight, excellent in heat insulation property, high and low-temperature resistance, chemical stability and physiological inertia and good in self-adhesion performance, and the force of adhesion between the foam material and an aluminum plate is 10-25N / mm.

Description

Technical field [0001] The invention relates to the field of preparation methods of silicone rubber foam materials, in particular to a preparation method of self-adhesive silicone rubber foam materials. Background technique [0002] As a kind of semi-inorganic and semi-organic polymer foam, silicone rubber foam not only has the characteristics of light weight, heat insulation and good impact resistance, etc., but also has excellent characteristics that ordinary rubber foam cannot have at the same time, such as Excellent high and low temperature resistance, chemical stability, physiological inertia, etc., can be used as materials such as shock absorption, sound absorption and heat insulation, and are widely used in transportation, electronics, chemical, military and aerospace fields. [0003] Silicone rubber foam materials are often required to have stickiness on their surface during use, which is called self-adhesive silicone rubber foam materials. At present, most of the self-adh...

AI Technical Summary

Problems solved by technology

However, in addition to the compounds required for the crosslinking and foaming of silicone rubber, the composition also needs to add silicate substances that give silicone rubber viscosity, resulting in an increase in the types of raw materials in the silicone rubber; and, the foaming agent used in it It is a compound containing embedded liquid or crystalline liquid, such as salt and protein, which has problems such as low foaming efficiency and residual substances that have a great impact on the performance of silicone rubber.