Silicone fluids are generally colorless transparent liquids. They exhibit excellent resistance to heat, cold, and moisture. There is also little viscosity change in silicone fluids over a wide temperature range, and they have outstanding electrical properties. In addition, they are notable for their characteristics of mold-releasability, water repellency, lubricity, and defoaming properties.
Heat resistance: Silicone fluids have outstanding stability against thermal oxidation.
Cold resistance: Silicone fluids withstand low temperatures well. Methylphenyl silicone fluid, formulated for low temperature applications, maintains flowability even at -65°C.
Viscosity stability: There is little change in viscosity over a wide temperature range.
Chemical stability: Silicone fluids are almost totally chemically inactive. At room temperature, they show almost no effects from alkali solutions (up to 10%) or acidic solutions (up to 30%).
Non-corrosive and little effect on other materials: Silicone fluids have almost no adverse effects on metals and many other materials.
Low surface tension: Silicone fluids have much lower surface tension than water and other common synthetic oils.
YC-201 is the most typical dimethyl silicone fluid. Many types of this transparent, odorless fluid are available, ranging from free flowing, water-like fluids to viscous, syrup-like fluids. The product is classified into three types according to viscosity:YC-201 (low viscosity; 0.65 to 5mm²/s), YC-201(intermediate viscosity: 10 to 5000mm²/s), and YC-201 (high viscosity; 6000 to 100000mm²/s).
The standard viscosity of this product is in the range of 0.65 to 1,00,000mm²/s (0.65to 100.000 cSt), with 27 types available altogether.