Polysilazane (PSZ) is a type of polymer with Si-N bonds as repeating units in the main chain. According to their molecular structure, polysilazanes can be divided into cyclic polysilazanes, oligomeric polysilazanes, and highly polymerized polysilazanes; According to their functional groups, polysilazanes can be divided into inorganic polysilazanes (fully hydrogenated polysilazanes) and organic polysilazanes (methyl, vinyl, fluorine-containing, heterogeneous element modified, etc.).

Since 1921, A Since Stock and Somieski's research group first reported the preparation of polysilazane using chlorosilane, research on polysilazane has continued for over a century.

Due to its unique structure and designability, polysilazane has excellent corrosion resistance, oxidation resistance, radiation resistance, and high temperature resistance, and is widely used in aerospace, defense and military industries, semiconductors, photovoltaic cells, high temperature resistant coatings, ceramic materials, resin materials, and other fields. At present, the main applications of polysilazane are:
Ceramic fiber precursors such as silicon nitride, silicon boron carbon nitrogen, etc
High temperature resistant coating
Metal high temperature resistance and corrosion protection
Ultra precision ceramic component adhesive
Modification of high-temperature resistant composite materials
Photoresist adhesive
Lithium battery electrolyte additive
Carbon fiber anti-oxidation and high-temperature resistant coating
Transportation vehicles, anti graffiti coatings for buildings
Ceramic non stick coating for kitchen utensils
Self cleaning coating for photovoltaic cells

Polysilazane, pls check MY 9120