Silicone resin, is a highly cross-linked structure of thermosetting polysiloxane polymer, both organic resin and inorganic materials dual characteristics, with unique physical and chemical properties, has good electrical insulation properties, temperature and waterproof effects, in the temperature, heat and moisture resistance are very ideal materials, so it in addition to the field of silica gel industry, It is also widely used in other industries!
Silicone resin is a thermosetting polyorganosiloxane with a high crosslinking structure. Because of its special structure, compared with other organic resins, it has excellent heat resistance, cold resistance, weather resistance, electrical insulation, hydrophobicity and anti-stick release property. Therefore, it is widely used as high and low temperature insulation paint, heat resistant paint, weather resistant paint, ablative paint and high and low temperature resistance, electrical insulation molding plastics.
Silicone resin is generally organic chlorosilane mixture or organic ethoxysilane as raw materials, in the mixed solvent after hydrolysis, condensation reaction, silicone resin curing is under the action of heating or catalyst, into a three-dimensional network structure, insoluble and non-melting thermosetting resin process, so the high temperature molding method of silicone products manufacturers, is the main way to achieve its molding! Silicone resins generally need to be cured at high temperatures, which limits their range of use.
Some characteristics and advantages of silicone resin are as follows:
1, silicone resin as the base material of the adhesive curing temperature is too high, the application is limited.
2, Silicone has good bonding properties for metals such as iron, aluminum and tin, and is also easy to bond to glass and ceramics, but its adhesion to copper is poor.
3, Add a small amount of ethyl orthosilicate, potassium acetate and silicate glass, etc., the curing temperature is reduced to 220 ~ 200℃, and the high temperature strength is still 392-490MPa.
4, silicone adhesive with pure silicone resin as the base material, silicone resin as the base material, adding inorganic filler and solvent mixed, curing release small molecules, need to be heated and pressurized.
5, pure silicone resin mechanical strength is low, and polyester, epoxy or phenolic and other organic resin copolymerization modification, can obtain high temperature resistance and excellent mechanical properties, for high temperature structural silica gel.