Why make silicone pressure sensitive glue?

Silicone pressure sensitive adhesive is a kind of chemical raw material commonly used in the field of chemical industry. Silicone pressure sensitive adhesive is usually composed of a silicone rubber and an MQ silicone resin in proportion to the mixture. Silicone rubber can increase the fluidity of pressure sensitive adhesive, so as to increase the interface adhesion, so that the initial viscosity.

MQ silicone has a reinforcing effect on the mechanical properties of pressure sensitive adhesive, because the change of molecular mass of MQ silicone makes the viscosity and cohesion strength of pressure sensitive adhesive change. When the molecular weight of MQ silicone resin is about 3000, the pressure sensitive adhesive has the highest cohesion strength, good stickiness, high peeling strength and good thixotropy. And in the use of MQ silicone resin as the main body of silicone pressure sensitive adhesive also greatly improved transmittance.

The excellent mechanical properties of organosilicon pressure-sensitive adhesive are reflected in its chemical tolerance, mechanical stability at extreme temperatures and dielectric mechanical properties. In addition, it can also bond a variety of difficult materials, such as polyolefin without surface treatment, polyimide and other ordinary pressure sensitive adhesive can not adhere to the base surface.

Existing organosilicone pressure sensitive adhesives usually contain flammable and easily toxic solvents, such as toluene, xylene, etc., which need to be managed as dangerous goods during storage, transportation and use. Toluene is an important chemical raw material, and is also the most commonly used solvent for the preparation of organosilicon pressure-sensitive adhesive. It has toxic and irritating odor and inflammability, which has a mild irritating effect on skin and mucous membranes, has an anesthetic effect on the central nervous system, and also causes great pollution to the environment. In order to better protect the environment and implement the concept of green environmental protection and pollution-free, it is necessary to develop a silicone pressure sensitive adhesive without aromatic compounds.