Silicone adhesive is also called silicone adhesive.
use
Among the existing heat-resistant adhesives, the silicone adhesive is one of the excellent varieties. Polysiloxanes used as adhesives can be divided into silicone resin-based adhesives and silicone rubber-based adhesives according to the source of the raw materials. The former is mainly used for gluing metal and heat-resistant non-metallic materials, and the resulting glued parts can be used in the temperature range of -60 ℃ ～ 200 ℃; the latter is mainly used for gluing heat-resistant rubber, rubber and metal, and other nonmetal material.
Features
Silicone resin has good bonding properties to metals such as iron, aluminum and tin, and is also easy to bond to glass and ceramics, but has poor adhesion to copper;
Organic silicone adhesive based on pure silicone resin, based on silicone resin, mixed with inorganic filler and solvent, small molecules are released during curing, and heating and pressure are required;
The curing temperature of the silicone resin-based adhesive is too high, and the application is limited;
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 3 92-4 90MPa
Pure silicon resin has low mechanical strength. When copolymerized with organic resins such as polyester, epoxy, or phenolic, it can obtain high temperature resistance and excellent mechanical properties. It is used for high temperature structural adhesives.