Basic knowledge of the most systematic silicone oil products
Silicone oil usually refers to a linear polysiloxane that maintains a liquid state at room temperature. It is a type of silicone product with a wide variety of applications and a wide range of applications. According to the different classification of the substituted groups on the polysiloxane chain, silicone oil can be divided into: methyl silicone oil, phenyl silicone oil, ethyl silicone oil, hydroxy silicone oil, amino silicone oil, hydrogen-containing silicone oil, vinyl silicone oil and polyether modified silicone oil , Fluorosilicone oil and many other types.
According to the types of organic groups, the application characteristics are as follows:
The following describes several representative types of silicone oil:
Dimethicone is the most common type of silicone oil. It is the most widely used and most widely used. In China, the brand name of methyl silicone oil is 201 series, and the brand names of Dow Corning Corporation of the United States are DOWCORNING and XIAMETER. -200 series; the brand name of the German Wacker company is the AK series; the brand name of the Japan Shin-Etsu company is the KF series. China's domestic methyl silicone oil production enterprises include: Bluestar Jiangxi Xinghuo, Yichang Kelin Silicon Materials Co., Ltd., Zhejiang Xin'an Chemicals, Guangzhou Tianci, Shandong Dayi Chemicals, Jiaxing Kerui Silicones, etc.
2. Phenyl silicone oil
Another type of phenyl silicone oil that is more widely used is the product obtained after partial methyl group is replaced by phenyl. According to the different phenyl content, it can be divided into the following categories: Low phenyl silicone oil (5% mole fraction of phenyl) ～ 10%); Medium phenyl silicone oil (phenyl mole fraction 25%); High phenyl silicone oil (phenyl mole fraction 45%); High phenyl silicone oil with low degree of polymerization (phenyl mole fraction higher than 45%); Biphenyl silicone oil.
3. Ethyl silicone oil
Various ethyl ethoxy silanes are hydrolyzed in the presence of hydrochloric acid and condensed into polysilicon ethers. After molecular rearrangement and fractional distillation under vacuum, various silicone oils with different viscosities can be obtained. Used as a release agent for various rubber and plastic products. This product has low volatility, small surface tension, non-toxic, non-corrosive, aging resistance, and can be formulated into different viscosity according to the needs of use. Widely used as insulation material, precision instrumentation oil, hydraulic oil, special lubricating oil, etc. in the electrical industry.
4. Hydroxy silicone oil
Hydroxy silicone oil can be used as a structural control agent for the production of room temperature silicone rubber and as a chain extender for the synthesis of other products. At present, it is mainly produced by Wacker Chemical, Zhixin Chemical, Hubei Longma, Blue Star, Zhejiang Hengyecheng and other companies.
5. Amino silicone oil
Amino silicone oil is a basic component specially used for textile softening and finishing agent, mainly produced by Dow Corning, Bluestar, Shandong Dayi Chemical, Demei Wacker, Yichang Kelin and other enterprises. Dow Corning's trade name is mainly OFX series, MT's trade name is mainly TSF4708, Shin-Etsu's trade name is DC-8209A.
6. Hydrogen-containing silicone oil
The domestic manufacturer's hydrogen-containing silicone oil adopts the 202 series name. At present, there are dozens of domestic companies that produce hydrogen-containing silicone oil. With the exception of Zhejiang Hengyecheng, Bluestar and Xin'an Chemical, the production capacity of other companies is below 4,000 tons per year. Dow Corning's hydrogen-containing silicone oils are mostly branded as MHX series, Mitu's branded as TSF series, Shin-Etsu's branded as KF-99 series.
7. Vinyl silicone oil
Vinyl silicone oil is the basic compound for the production of addition-molded liquid glue and silicone gel. At present, the main domestic production companies are: Lan Xinghuo, Zhejiang Xin'an Chemical Group, Zhejiang Runhe. The volume of other companies is relatively small.
8. Modified silicone oil
Among the modified silicone oils, polyether-modified silicone oil is used in the largest amount, and is widely used as a leveling agent, fiber oil agent, fabric finishing agent, cosmetic raw materials, paint leveling agent, defoaming agent, pesticide spreading agent, etc .; Fluorosilicone oil has the common advantages of siloxane and fluorocarbon compounds. It has excellent weather resistance, lubricity and oleophobicity. It should be widely used in friction fields such as aerospace, automobiles, electromechanical and electronic machinery.