Do you really know about dimethicones?
What is dimethicone oil
201 Methyl silicone oil is a novel silicone synthetic material. Appearance is colorless transparent oily liquid. It is chemically composed of straight-chain polymethylsiloxane with the structural formula:
Due to the stability of the silicone-oxygen bond and the hydrophobicity of methyl, as well as the structural characteristics of the methylsiloxane ensemble poly, the methyl silicone oil has good heat resistance. Flash point is bright, non-volatile, viscosity coefficient is small, while compression force is large, surface tension is small, chemical stability, good electrical (insulation), and water and moisture resistance, non-toxic effect on living organisms (including humans). In order to make methyl silicone oil in other objects on the surface of the formation of thin films or made of rubber-like solid material, can be heated at high temperatures (250-300 ℃) or add the appropriate catalyst (generally with peroxide) for curing treatment. The use of methyl silicone oil temperature range of 50-180 ℃.
Methyl silicone oil of different viscosity, their physicochemical properties and characteristics of the parameters also have certain differences. There are 201-10, 201-50, 201-100, 201-350, 201-500, 201-800, 201-1000 and other grades according to the viscosity of the product. It can also be made into other special viscosity specifications according to the requirements of users.
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Scope of application
1、Insulating medium for temperature resistance, arc resistance, corrosion resistance and moisture resistance in electrical and electronic industries.
2, in the chemical, pharmaceutical, food and other industrial sectors as a good heat carrier.
3、It is used as high efficient defoamer in synthetic resin, oil processing, food manufacturing, as well as fermentation, papermaking and other processes.
4、It is used for shockproof, damping, lubrication and force transmission in precision machinery and instruments.
5、It is used as high temperature release agent in plastic and rubber molding process and food production.
6, in glass, ceramics, metal, leather, fabrics, silk thread and cement products and other substances on the surface treatment agent, in order to achieve enhancement, drainage corrosion resistance, mildew, smooth and other effects.
7、It is used as additives in paint, grease, cosmetics and other products to improve leveling, smoothing and other properties.
8, in the medical, such as surgery, wound dressing, needle handling, blood storage and oral medication, etc., has many uses.
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Technical index
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Need to pay attention to
1, methyl silicone oil in heat, and acid or alkali contact has a certain destructive effect, methyl silicone oil in higher than 200 ° C and air contact, oxidation can occur precipitation of corrosive formaldehyde and other low-boiling substances, methyl silicone oil, although the general temperature will not be spontaneous combustion, but to reach the combustion point (450 ° C – 500 ° C) or contact caused by combustion, so that the space is filled with a large number of cotton-wool-like texture of silica (when the fire can be (when fire, can be suppressed with sand or wet sacks).
2, methyl silicone oil if the packaging storage is good, can not deteriorate for a long time (storage period of 5 years, after the re-examination, not found deterioration, can continue to name with).
