Nov 16, 2021
Foamed silicone rubber is a kind of belt made of condensed hydroxyl-terminated raw silicone rubber as base material, hydroxyl hydrogen-containing silicone oil as blowing agent, vinyl platinum complex as catalyst, and foaming and vulcanizing at room temperature. Hole sponge-like elastomer. The foamed silicone rubber formulated with room temperature vulcanized silicone rubber has a wider temperature range than other foam elastomers, and has high thermal stability, good insulation, heat insulation and moisture resistance, and excellent shock resistance, especially under high frequency. It is an ideal lightweight packaging material, which can be used for various electronic components, instruments, meters, flying body instrument wheels, filling materials for thermal insulation interlayers, floating materials in salt spray atmospheres, sealing materials, and orthopedics. Surgical filling, repairing and dressing materials.

Foamed silicone rubber is a kind of belt made of condensed hydroxyl-terminated raw silicone rubber as base material, hydroxyl hydrogen-containing silicone oil as blowing agent, vinyl platinum complex as catalyst, and foaming and vulcanizing at room temperature. Hole sponge-like elastomer. The hydrogen generated in the reaction foams the rubber compound during vulcanization. The amount of hydrogen-containing silicone oil as the blowing agent will affect the reaction speed and the structure of the foam. Excessive dosage will cause more open pores on the surface of the foam, which will accelerate the vulcanization speed; if the dosage is small, the volume expansion will be small and the product density will increase.

In order to improve the quality of the foam, some other components must be added, such as hydrogen-containing silicone oil, which will generate more gas during the vulcanization process, improve the feel of the foam and reduce the density. Adding diphenylsilicone glycol can not only control the foam structure, but also control the viscosity increase of the rubber compound during storage, but the amount should not be too much, otherwise it will affect the electrical properties of the foam. In order to improve the physical and mechanical properties of the foam, transparent silicone rubber can also be added. The amount of the vinyl complex of the catalyst chloroplatinic acid should not be too much, and the operation convenience shall prevail, otherwise the viscosity will increase and the operation will be unfavorable. When the amount of catalyst is insufficient, the vulcanization is not complete, the foam surface is sticky, the elasticity is not good, it is soft and plastic, and the strength is poor.

Features and applications:

Foamed silicone rubber has high thermal stability, good thermal insulation, insulation, moisture resistance and shock resistance, especially good shock resistance at high frequencies, so it is an ideal lightweight packaging material for Various electronic components, instruments, instruments, flying body instrument wheels, etc. can play the "three-proof" protection function of "moisture-proof, shock-proof, and anti-corrosion". In addition, it can also be used as the filling material of the thermal insulation interlayer, the floating material and the sealing material in the salt spray atmosphere. Foam silicone rubber can also be used as a filling, repairing and dressing material for orthopedics in medicine.



Top Win is one of the leading & professional manufacturers with  more than 20 years' experience, have domestic top-level engineers in silicone surfactant industry. We specialized in producing all kinds of SILICONE BASED new materials and specialized in research, production, sales and marketing in silicone-based performance materials. Provide good OEM&ODM service.Our products are mainly used in polyurethane foamAgriculture,Coatings and InksLeather & TextilesPulp and PaperCosmetic industryetc.