As a functional silicone additive, my country’s vinyl double-head production capacity continues to expand

Vinyl double-heading agent, also known as silicone vinyl double-heading agent and tetramethyldivinyldisiloxane, has a chemical formula of C8H18OSi2 and is a silicone functional additive. Vinyl double header appears as a colorless and transparent liquid, soluble in organic solvents but insoluble in water. Vinyl double head can be used as cross-linking agent and end-capping agent, and resin, rubber and silicone oil are its end products.

The main preparation method of vinyl double heads is the sodium shrinkage method, which can be subdivided into two types: solvent-free sodium shrinkage method and solvent-based sodium shrinkage method. The sodium shrinkage method usually uses vinyl chloride, sodium salt, and dimethyldiethoxysilane as the main raw materials. After full reaction, the vinyl single-head semi-finished product and sodium chloride are separated, and then the vinyl double-head seal is obtained by distillation. head. The sodium shrinkage method has the advantages of high finished product purity, high finished product yield, and easy availability of raw materials. It has been widely used in vinyl double-head large-scale production lines.

As a functional silicone additive, vinyl double head can effectively improve and enhance the performance and quality of downstream products. Resin, rubber and silicone oil are its end products. In terms of resin, vinyl double head can be used as a cross-linking agent in the production process of vinyl silicone resin; in terms of rubber, it can be used as a head agent in the production of liquid silicone, addition silicone rubber, etc.; in silicone oil On the other hand, vinyl double heads can be used to produce vinyl silicone oil.

Construction engineering, electronic and electrical, medical and health, aerospace, power systems, etc. are the main application fields of vinyl double heads. In the field of construction engineering, vinyl silicone resin made of vinyl double heads can be used as building waterproofing materials; in the electronic and electrical field, vinyl double heads can be used in the manufacture of semiconductor packaging materials; in the aerospace field, vinyl The base double head can be used in the manufacturing process of aircraft fuselage components and wings. According to the “2023-2028 China Vinyl Double Head Industry Market In-depth Research and Development Prospects Forecast Report released by the Industrial Research Center It shows that benefiting from the accelerated development of the downstream industry, my country’s vinyl double-head production capacity continues to expand, exceeding 7,000 tons in 2022.

There are few players in my country’s vinyl double-head market, and production capacity is mainly concentrated in three companies: Pinhan New Materials, Xinyaqiang and Jiahui New Materials. Xinyaqiang is a representative enterprise of silicone functional additives in my country. Its main products include vinyl double heads, hexamethyldisilazane and silicon ethers. Currently, the company is promoting an annual output of 4,200 tons of vinyl double heads. Project construction, the project will be put into production in June 2024.

Industry analysts said that in recent years, with the growth of market demand, the prosperity of my country’s silicone functional additives industry has continued to increase. As a segmented product of silicone functional additives, the market space of vinyl double heads has been further expanded. It is expected that in the future, with technological advancement and the accelerated development of downstream industries, the number of vinyl double-head manufacturers in my country will increase, and their production capacity will further expand.