Neck-blocking technical material: polysilazane

Polysilazanes (PSZ) are a class of inorganic polymers with Si-N bonds as repeating units in the backbone. Polysilazanes can be divided into two main categories: organopolysilazanes (OPSZ) and perhydrated polysilazanes (PHPS). Due to their unique structure, polysilazanes can be converted to SiCNO, SiCN, or silica ceramics at high temperatures, achieving a hardness exceeding 8H after curing. Polysilazanes exhibit excellent corrosion, oxidation, radiation, and high-temperature resistance, and are widely used in aerospace, semiconductors, photovoltaic cells, high-temperature resistant coatings, ceramic materials, and resin materials. Silazane polymers can be converted to SiCN, SiCNO, or silica ceramics at high temperatures, making them valuable for applications in high-temperature resistant coatings.

Polysilazanes can be divided into two main categories: organopolysilazanes (OPSZ) and perhydrated polysilazanes (PHPS). Discovered in the 1880s, polysilazanes only entered commercial development in the 1950s due to their complex preparation process. Polysilazane synthesis methods include ammonolysis, aminolysis, hydrazinelysis, ring-opening polymerization, and dehydrogenative coupling. With continued research, the number of polysilazane synthesis methods is expected to increase.

Polysilazane is a new, cutting-edge material. Ceramic materials prepared using polysilazane as a precursor exhibit properties such as ultra-high temperature resistance, ultra-toughness, ultra-thinness, ultra-corrosion resistance, and ultra-high strength. In recent years, with the advancement of industrial technology, the global market demand for ceramic-based materials has continued to grow, driving the demand for polysilazane.

As a new, cutting-edge material, polysilazane has broad application prospects in aerospace, semiconductors, high-temperature resistant coatings, ceramic materials, and other fields. With the development of end-use industries, the polysilazane market is expected to maintain rapid growth.