What types of silicone resin products are there? Silicone resin products are currently a rigid demand in many industries, and the market demand is very huge. There are many types of silicone resin products, and many friends are not clear about these types, so what types of silicone resin products are there? Let's take a look at it together.

Silicone Resin Type:

1. Methyl silicone resin is a silicone resin with low carbon content. After curing, it has the advantages of hardness and transparency, less weight loss at high temperature and less smoke. Most of them are obtained by hydrolysis and condensation of methylchlorosilane as raw material under solvent and low temperature conditions. When methylalkoxysilane is used as the raw material, a small amount of acid or base is often added as a hydrolysis catalyst. Mainly used for hardening coatings, high temperature resistant mica adhesives and resistance coatings.

2. Methyl phenyl silicone resin, due to the introduction of phenyl group, is obviously better than methyl silicone resin in terms of thermal elasticity, adhesiveness and compatibility with organic and inorganic fillers, but there are also high curing temperature and high temperature. Disadvantages such as easy to stick back. It is mostly prepared by mixing methyl chlorosilane and phenyl chlorosilane as raw materials and hydrolyzing it in toluene or xylene. It is widely used as high temperature
resistant electrical insulating paint, high temperature resistant paint and high temperature resistant adhesive. It is one of the most widely used silicone resins.

3. MQ silicone resin, a silicone resin with a special structure composed of monofunctional chain units (M) and tetrafunctional chain units (Q). The preparation methods mainly include sodium silicate method and silicate method. The former has a simple process and easy-to-obtain raw materials; the latter is easy to control and has a narrower molar mass distribution. MQ silicone resin is mainly used as filler for silicone pressure-sensitive adhesive, tackifier and reinforcing filler for liquid silicone rubber.

Silicone resin properties:

1. Low surface tension, the cohesive energy density of polysiloxane is low, the intermolecular force is small, and the molecules are in a high compliant state, resulting in low surface tension. Because the solubility parameter of siloxane is much lower than that of other compounds and materials, and the surface tension is low, silicone resin has obvious incompatibility, that is, it is not easy to mix with other substances, thus showing excellent anti-sticking properties.

2. Thermal stability, the heat resistance of silicone resin is much better than that of ordinary organic resins. It can be used for a long time at 200~250℃ without decomposition or discoloration, and it can withstand 300℃ in a short time. The silicone resin coating can withstand higher temperatures. Silicone can not only withstand high temperature, but also low temperature, and its chemical properties and physical properties change little with temperature, which is related to the fact that the silicone molecule is a spiral structure that is easy to bend. The average intermolecular distance, on the other hand, the helical expansion reduces the intermolecular distance, and the expansion and contraction of the helix can alleviate the influence of temperature, so it has excellent temperature resistance.

3. Weather resistance, weather resistance is one of the main characteristics of silicone resin, so it is widely used as a film-forming polymer for high weather resistance coatings. There are two reasons for the good weather resistance of silicone resin: first, the Si-O bond in silicone resin is very stable, it is difficult to generate free radical reaction caused by ultraviolet rays, and it is not easy to undergo oxidation reaction; second, silicone resin is not sensitive to sunlight.

The above are some types and properties of silicone resin products. When purchasing products, we can choose suitable products according to our own needs. At present, silicone resin materials are widely used, and are also rigid needs for high-end precision industries. The prospects are very promising. it is good.