Introduction Of Physical And Chemical Properties Of Polydimethylsiloxane
The chemical state of polydimethylsiloxane dimethylsiloxane is colorless or light yellow liquid, tasteless, high transparency, heat resistance, cold resistance, small viscosity change with temperature, water resistance, small surface tension, thermal conductivity, thermal conductivity of 0.134-0.159w/m * k, light transmittance of 100%, dimethylsilicone oil is non-toxic and tasteless, with physiological inertia and good chemical stability 。 It has good electrical insulation, weather resistance, hydrophobicity, and high shear resistance. It can be used for a long time at – 50 ℃ ~ 200 ℃. With excellent physical properties, it can be directly used in moisture-proof insulation, damping, shock absorption, defoaming, lubrication, polishing and so on. It is widely used as insulation lubrication, shockproof, oil dust proof, dielectric fluid and heat carrier. And used as defoamer, release agent, paint and additives of daily chemicals.
Polydimethylsiloxane can be mixed with Lanolin, stearyl alcohol, cetyl alcohol, glyceryl monostearate, tween and span as emulsion matrix. Adding film forming agents such as PVP, PVA and cellulose derivatives to this product can enhance its protection. The drug release and penetration through the skin were faster than those of porpoise fat, lanolin and vaseline.
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