Silicone pressure-sensitive adhesives mainly include solvent type, high solid content type, solvent-free type, emulsion type, radiation curing type, resin modification type, biodegradable type, functional type and other systems. Since the solvent type contains a large amount of volatile organic compounds, during curing, the volatilization of the solvent can easily cause serious pollution to the environment. Nowadays, environmental protection has been paid more and more attention. The silicone pressure-sensitive adhesive industry is taking environmentally friendly low-cost products as the mainstream of development, and new products such as biodegradable and radiation curing products are the research direction. MQ silicone resin is mainly used to increase viscosity and strengthen. The silanol or vinyl in MQ resin can respectively react with the hydroxyl of silicone rubber or through the condensation reaction of hydrogen-containing siloxane and silicone rubber under the action of a catalyst. Silicone pressure sensitive adhesive.

Principle

Silicone rubber can increase the fluidity of the pressure-sensitive adhesive, thereby increasing the interfacial adhesion, strong initial tack, and the molecular weight of the MQ resin has a greater impact on the adhesive performance of the pressure-sensitive adhesive, because the change in the molecular weight makes the pressure-sensitive adhesive body The viscosity and cohesive strength change. When the molecular weight of MQ silicone resin is around 3000, the pressure-sensitive adhesive has high cohesive strength, good stickiness, high peel strength, and good thixotropy.

Application characteristics

(1) With high dispersibility, it can improve the fluidity of the colloid without thickening.

(2) Part of the original vinyl silicone oil or epoxy resin can be replaced appropriately

(3) Increase the thermal conductivity of the glue, reduce the thermal expansion coefficient, improve the yellowing resistance, etc.

(4) The product has low moisture content, and it is not easy to cause quality problems such as product foaming during hot air vulcanization

(5) Improve vulcanization efficiency and reduce the degree of colloidal structure

Instructions

Suitable for pressure sensitive adhesive, epoxy potting glue, silicone potting glue, polyurethane potting glue series varieties

Mix directly with basic raw materials at a certain temperature (50-60℃)

According to the different requirements of different products, the dosage can be adjusted freely.