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What is silicone release agent?(3)

Views: 1000     Author: Site Editor     Publish Time: 2021-06-18      Origin: Site


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According to the different crosslinking system, it can be divided into condensation type and addition type.

Condensation type silicone release agent

Condensation type silicone release agent was first used in the industrial industry in 1954.The real catalyst in the condensation type silicone release agent is dibutyltin. With the European Union's restriction on dibutyltin and dioctyltin compounds coming into force on January 1, 2012, its release coating applications in contact with human body and food will be limited in the future.

Add molding silicone release agent

The additive silicone release agent was first applied industrially in 1975. It mainly involves the hydrogen-silicon addition reaction of dimethylpolysiloxane with vinyl and the cross-linking agent containing hydrogen and silicon bonds under the catalyzation of the compound of platinum metal.Compared with the condensation type, the molded silicone release agent has many advantages: (1) easy to carry out molecular design, that is, easy to adjust and control the molecular weight of the polymer and crosslinking degree, so as to obtain the desired release effect;② It is suitable for the preparation of solvent-free and emulsion release agents, which represent the future trend;(3) The storage and transportation process will not occur crosslinking, product quality is easy to be guaranteed.

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