Classification of Silicone ResinSilicone resin is a semi-inorganic polymer with silicone-oxygen-silicone as the main chain and organic groups attached to the silicone atoms of the crosslinked type. It is with the direct method of producing silicone monomer silicone resin has outstanding weather resistance, is any kind of organic resin can not be expected, even in the ultraviolet radiation, silicone resin is resistant to yellowing. Silicone resin adhesive silicone adhesive according to the source of raw materials can be divided into silicone resin-based adhesive and silicone rubber-based adhesive, the former is mainly used for bonding metals and heat-resistant silicone resin on iron, aluminum and tin and other metals bonding performance is good, on the glass and ceramics are also easy to bonding, but the adhesion to the copper adhesion is poor. Pure silicone resin as the base material of silicone adhesive.

Silicone resin coatings have a number of disadvantages: poor film-forming properties, including high curing temperature, long time, large-area construction is not convenient, and the film on the substrate adhesion is poor. Modification with fluorination is mainly to increase the solvent resistance of silicone resins, repel oil (anti-adhesion) and reduce the surface energy. The critical surface tension of silicone resin is lower than that of other resins, but higher than that of fluorine resin.

Silicone resin is a thermosetting plastic, one of its most outstanding properties is excellent thermal oxidation stability. 250 ℃ heating for 24 hours, silicone resin weight loss of only 2 ~ 8%. Another outstanding property of silicone resin is its excellent electrical insulation property, which can maintain its good insulation property in a wide range of temperature and frequency.

Silicone resin contains the number of organic groups that R / Si value is one of the main indicators to control the quality of silicone resin, silicone resin curing, film flexibility, hardness, heat resistance and heat cracking resistance are related to R / Si. General linear silicone oil R / Si slightly more than 2, silicone rubber R / Si is close to 2, and silicone resin R / Si in 1.0 or so. R / Si value is smaller, the better the curing performance of silicone resin, the smaller the heat loss, paint film hard, but the flexibility is reduced, the film becomes brittle, the impact strength is reduced; R / Si value of the larger, silicone resin needs to be at high temperatures (200-250 ° C) under the baking for a long time! Or with the help of curing agent for curing, so that the flexibility is better, film hardness is poor, with good impact strength.

In addition, the performance of silicone resin is also closely related to the type of organic group R. When the organic group is -CH3, the silicone resin can be endowed with thermal stability, hydrophobicity, demolding, arc resistance; when the organic group is - C6H5, the silicone resin is endowed with oxidative stability, which improves the thermal stability of the resin; when the organic group is -CH=CH2, the silicone resin can be improved in terms of curing performance and endowed with coupling properties; when the organic group is When the organic group is -Phenyl, ethyl, can improve the silicone resin and organic mixing; when the organic group is -NH2 (CH2), can improve the water solubility of the polymer, while giving coupling; when the organic group is a long-chain alkyl, can improve the hydrophobicity of the silicone resin. Therefore, silicone monomers with different groups can be selected to prepare silicone resins according to specific performance requirements.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150A. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.