Silicone  Silicone resin is a thermosetting polysiloxane polymer with a highly cross-linked structure. It has the dual characteristics of organic resin and inorganic material. It has unique physical and chemical properties, good electrical insulation properties, temperature resistance and Waterproof effect.

The weather resistance of silicone resin is better than that of general organic resin. Therefore, it is an ideal material for the coating of temperature-resistant, heat-resistant and moisture-proof treatment protective surface layers.

Action performance:
The requirements for the mechanical properties of silicone resins mainly depend on the application. Silicone resins used as electrical insulating paints, coatings and adhesives, people are more concerned about its hardness, elasticity, thermoplasticity and adhesion. The hardness and elasticity of the silicone resin paint film can be varied in a wide range by adjusting the molecular structure of the resin. When the content of trifunctional or tetrafunctional chain units is higher, that is, the higher the crosslinking density, the paint film with high hardness and low elasticity can be obtained; the introduction of large sterically hindered substituents can improve flexibility and thermoelasticity, which is positive This is the reason why the flexibility and thermoplasticity of methyl phenyl silicone resin is better than that of methyl silicone resin. Therefore, the silicone resin does not need to use special plasticizers, but can meet the plasticity requirements by the appropriate combination of soft and hard silicone resins.

When used as some coatings, the hardness of the pure silicone resin coating film is insufficient, but the thermoplasticity is more than enough; if the organic modified silicone resin is used, it is easy to solve this contradiction.

Pigments and catalysts can also affect the hardness and elasticity of silicone resins. Pigments have the effect of accelerating the oxidation of the silicone paint film and converting it into a harder silica glass. Using low-activity catalysts, due to incomplete condensation reaction, only soft coatings can be obtained; on the contrary, using high-activity catalysts (such as compounds of Pb, Al, etc.), hard and brittle coatings can be obtained, but some catalysts (such as titanium acid ester) can effectively improve the hardness of the coating without seriously reducing the elasticity.

Silicone resin has good adhesion to iron, aluminum, silver, tin, glass and ceramics, etc., but poor adhesion to copper, especially after high temperature and long-term thermal aging, which may cause the oxide film on the other side of copper. Accelerates the thermal cracking reaction of silicone resin. The adhesion of silicone grease to organic materials such as plastics and silicone rubber mainly depends on the surface energy of the latter and its compatibility with silicone resins. Materials with lower surface energy and less compatibility are more difficult to bond. By treating the surface of the substrate (including sanding and priming), especially introducing tackifiers into the silicone resin, the adhesiveness of the silicone resin to the difficult-to-stick substrate can be improved to a certain extent.