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Apr 19, 2024
Organic resin modified silicone resin is composed of two parts: polysiloxane and organic polymer. In addition to possessing the characteristics of pure silicone resin, it also possesses the characteristics endowed by organic resin. Although the above performance is slightly weakened compared to pure silicone resin, it is superior to silicone resin in terms of curing, adhesion, solvent resistance, and compatibility.Moreover, the performance of modified silicone resin can be adjusted according to the type, content, and modification method of the used silane and organic polymer. Compared with other polymer materials, the most outstanding performance of silicone products is their excellent temperature resistance, dielectric properties, weather resistance, physiological inertness, and low surface tension.
The basic structural unit (i.e. main chain) of organic silicone resin is composed of silicon oxygen links, and the side chains are connected to various other organic groups through silicon atoms, forming a highly cross-linked network structure of polyorganosilicon oxygen.Therefore, the structure of organic silicone resin contains both "organic groups" and "inorganic structures". This special composition and molecular structure combine the characteristics of organic matter with the functions of inorganic matter. Compared with general organic resins, it has many unique properties such as excellent resistance to high and low temperatures, climate aging, electrical insulation, ozone resistance, flame retardant, non-toxic and non corrosive, physiological inertness, hydrophobicity, and resistance to chemical reagents. Some varieties also have oil resistance, solvent resistance, and radiation resistance.
Trifunctional or tetrafunctional monomers are essential components in typical condensed silicone resins. However, the appropriate R/Si and phenyl content depends on the use of the resin, that is, the monomer and its combination need to be determined based on performance and use.