Types of silicone monomers
Although there are many varieties in silicone, the raw materials for its initial production are limited to a few silicone monomers, of which dimethyldichlorosilane accounts for the absolute amount, followed by phenylchlorosilane, and the former accounts for more than 90% of the total monomers. In addition, trimethylchlorosilane, ethyl and propyl chlorosilane and vinyl chlorosilane are also indispensable raw materials for producing some varieties.
Organochlorosilane (methyl chlorosilane, phenyl chlorosilane, vinyl chlorosilane) is the foundation of silicone industry, and methyl chlorosilane is the pillar of silicone industry. Most siloxane polymers are based on polydimethylsiloxane prepared from dimethyldichlorosilane, and other groups such as phenyl, vinyl, chlorophenyl and fluoroalkyl are introduced to meet special needs. The production process of methylchlorosilane is long and technically difficult, and it is a technology-intensive and capital-intensive industry. Therefore, major foreign companies focus on building basic factories on a large scale, and then distributing processed products according to their uses and market conditions.
Application of silicone materials
Because of its excellent performance, silicone is widely used. It is not only used as a special material for aviation, cutting-edge technology and military technology departments, but also used in various departments of the national economy. Its application scope has been expanded to: architecture, electronics and electricity, textiles, automobiles, machinery, leather and paper, chemical and light industry, metals and coatings, medicine and medical treatment, and so on.
The main uses of silicone oil and its derivatives are: release agent, damping oil, dielectric oil, hydraulic oil, heat conduction oil, diffusion pump oil, defoamer, lubricant, hydrophobic agent, paint additive, polishing agent, cosmetic and daily necessities additive, surfactant, particle and fiber treatment agent, silicone grease and flocculant.
Silicone rubber is divided into room temperature vulcanized silicone rubber and high temperature vulcanized silicone rubber. The former is mainly used in sealants, adhesives, conformal coatings, gaskets, foam rubber, molded parts, packaging materials, electrical insulation, glass assembly, medical implants, surgical auxiliary materials and molding materials; The latter is mainly used for pipes and hoses, adhesive tapes, wire and cable insulation materials, surgical auxiliary materials, flame-retardant rubber parts, penetrating sealing materials, molded parts, embossing rollers, automobile ignition cables and spark plug covers, extrusions, medical implants, laminated products, conductive rubber, fiber coatings and foam rubber.
The main applications of silicone resin are: varnish, insulating paint, molding compound, protective coating, packaging material, adhesive coating, pressure sensitive adhesive, laminated resin, release agent, adhesive and waterproof agent for masonry.
Silane coupling agent is mainly used in paint, plastic rubber processing and adhesive.
Silicone can not only be widely used as basic materials and structural materials for some large-scale industries, but also be used as supplementary or auxiliary materials to share with other materials or improve the technological performance of other materials.
Because of its unique materials and wide applications, silicone materials have been studied in various industries. No matter the production scale or production technology, the development of silicone industry is very rapid. More and more industries began to use silicone materials, including medical care, beauty, automobiles and other industries closely related to daily life. Because of the great demand for silicone, I believe that the silicone industry will develop faster and faster, and silicone will play a role in more and more places.
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