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Types of silicone oil Business Articles | December 2 Cheap College Jerseys Online , 2013
It is made by dimethyldichlorosilane adding water hydrolyze to obtain initial condensation ring body, the ring body by cracking, distillation to obtain the low ring body, then put the ring body, sea...
It is made by dimethyldichlorosilane adding water hydrolyze to obtain initial condensation ring body, the ring body by cracking, distillation to obtain the low ring body, then put the ring body, sealing agent, catalyst together to conduct telomerization will obtain various mixtures which have different degrees of polymerization, by reduced pressure Cheap College Jerseys Wholesale , distillation and remove low boiling composition can be obtained silicone oil.
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In the most commonly used silicone oil, all the organic groups are methyl, called methylsilicone oil. Other organic group also can be used to instead of part of methyl group to improve certain performance and make it applied to a variety of different purposes. Other common groups have hydrogen, ethyl, phenyl, chlorophenyl group, trifluoromethyl group and the like. In recent years, organically modified silicone oil has rapid development, show up a number of organically modified silicone oil which has special properties.
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Silicone oil is generally colorless (or pale yellow), odorless, non-toxic Cheap College Jerseys Free Shipping , non-volatile liquid. Silicone oil insoluble in water, methanol, glycol and -ethoxyethanol, mutually dissolved with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene, slightly soluble in acetone, dioxane, ethanol and butanol. It has a small vapor pressure, high flash point and ignition point Cheap College Jerseys From China , low freezing point. To obtain low viscosity silicone oil, used the acid clay as catalyst, and conducts telomerization at 180, or the sulfuric acid as catalyst, conducts telomerization at low temperatures, if want to produce high viscosity silicone oil or a viscous material can use alkaline catalyst. According to the chemical structure, the silicone oil series can be divided into methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen-containing silicone oil, methylphenyl silicone oil Cheap College Jerseys China , methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl propyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen-containing silicone oil, hydroxyl hydrogen-containing silicone oil, cyanogen-containing silicone oil and so on. From the applications of view, it has damped silicone oil, diffusion pump silicone oil, hydraulic oil Cheap College Jerseys , insulating oil, heat transfer oil, brake oil, etc.
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Silicone oil has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiologically inert and smaller surface tension. In addition, it also has a low viscosity-temperature coefficient, high compression resistance, some of the various have the radiation-resistance performance.
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The main chain of dimethylsilicone oil is composed by silicone atoms Cheap Authentic NCAA Jerseys , pendant group which attached to silicon are methyl. Viscosity range is 10 ~ 200000mm2s at 25. Silicone oil is colorless, transparent, non-toxic and odorless oil, which has excellent electrical insulation properties and heat resistance, high flash point, low freezing point, can be long-term used in the temperature range of -50 ~ +200. Silicone oil has small viscosity-temperature coefficient, big compression ratio, small surface tension, good water-repellent moisture resistance, small specific heat capacity and thermal conductivity. It can be prepared by dimethyl cyclosiloxanes and hexamethyldisiloxane conducted telomerization under the presence of catalysts. Its viscosity was increased by the number of silicone chain sections n in the molecule Cheap NCAA Jerseys Online , from the easily flowing liquid to a thick semi-solid. Has excellent electrical insulating properties and heat resistance.
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Used as a long-term release agent in the contour machining of plastic and rubber as well as in food production. It is also used as high and low temperature lubricant between various materials, manufacturing the additives of lubricating plastics. Glass, ceramics, metal, cement and other products which treated with dimethylsilicone oil are not only hydrophobic, but also corrosion resistance, mildew proof, surface smooth. Widely used as heat carrier and efficient defoamers in the chemical, pharmaceutical, cosmetics material, food and other sectors; used as quakeproof damping material in precision machinery and instrumentation; used as high-temperature resistance dielectric liquid in the electric appliance and electronics industry. It also widely used as polishing agent of automotive Cheap NCAA Jerseys Wholesale , furniture, floor, as well as hydraulic oil of pumps, brakes, cylinders and so on.
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Article Source:http:www.cosprm
Shale Gas Market Research Report to 2020: Grand View Research, Inc. Business Articles | March 17, 2016
New Market Research Reports Title “Shale Gas Market Analysis Size and Segment Forecasts to 2020” Has Been Added to Report Database
The global shale gas market is expected to reach USD 67.02 billion by 2020, according to a new study by Grand View Research, Inc. Depleting conventional energy reserves across the globe has prompted the industry to shift focus towards developing alternative energy sources which is expected to remain a key driving factor for shale gas demand over the next six years. In addition, regulatory support for developing unconventional gases including shale gas is also expected to enhance commercialization over the forecast period. However, environmental concern Cheap NCAA Jerseys Free Shipping , especially excessive usage and contamination of water during s. Wholesale Jerseys Wholesale Jerseys Cheap NBA Jerseys Wholesale Cheap College Football Jerseys Cheap Soccer Jerseys China Cheap Authentic NBA Jerseys Cheap MLB Jerseys Online Cheap Retro Soccer Jerseys Cheap Football Jerseys Wholesale Adidas NHL Jerseys |
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