They are straight chained polydimethylsiloxane fluids.
Details
Middle Viscosity Silicone Oils
Description: They are straight chained polydimethylsiloxane fluids.
Applications:
They are used as:
Thermostatic fluids (-50℃ to +200℃),
Anti-blotting products for photocopying machines,
Thinning and plastifying agents for RTV’s and silicone sealants,
Raw material for Antifoam
Lubricating and heat protecting agents for textile threads ( synthetic sewing threads),
Ingredients in maintenance products (polishes, wax polishes, floor and furniture polishes, etc.),
Paint additives (anti-cratering, anti-floating/flooding and anti-scratching effects, etc.),
Water repellent treatment:
-of powders (for paints and plastics),
-of fibers: glass fibers,
Release agents (mould release of plastics and metal castings),
Lubricants (lubrication of elastomers or plastics on metal),
Surfactants for styrene-butadiene foam.
HCR application to reduce hardness
Properties:
Very good resistance to high and low temperature,
Good combustion resistance,
Low surface tension,
High compressibility,
Absence of ageing upon exposure to atmospheric agents,
Good oxidation resistance,
Little change in viscosity with temperature,
Good resistance to high and prolonged shear stress.
Technical index:
Appearance | Colorless, limpid liquid |
Viscosity at 25℃, mm2/s, approx. | 50 | 100 | 300 | 350 | 500 | 1000 |
Specific gravity at 25℃, approx. | 0.959 | 0.965 | 0.970 | 0.970 | 0.970 | 0.970 |
Flash point (Open cup), ℃, approx. | 280 | ≥300 | ≥300 | ≥300 | ≥300 | ≥300 |
Freezing point, ℃, approx. | -55 | -55 | -50 | -50 | -50 | -50 |
Refractive index at 25℃, approx. | 1.402 | 1.403 | 1.403 | 1.403 | 1.403 | 1.403 |
Surface tension at 25℃, mN/m, approx. | 20.7 | 20.9 | 21.1 | 21.1 | 21.1 | 21.1 |
Vapor pressure at 200℃, Pa, approx. | 1.33 | 1.33 | 1.33 | 1.33 | 1.33 | 1.33 |
Volume expansion coeff. Between 25℃ and 100℃, cm3/cm3/℃,approx. | 1.05* 10-3 | 9.45* 10-4 | 9.45* 10-4 | 9.45* 10-4 | 9.45* 10-4 | 9.45* 10-4 |
Specific heat capacity between 40℃ and 200℃, J/(g.K) | 1.46 | 1.46 | 1.46 | 1.46 | 1.46 | 1.46 |
Thermal conductivity, W/(m.K), approx. | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 |
Viscosity/temperature coeff. [1], approx. | 0.59 | 0.60 | 0.62 | 0.62 | 0.62 | 0.62 |
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[1] Viscosity/temperature coefficient =1-（Viscosity at 99℃/Viscosity at 38℃）
Packaging:
They are available in 25 and 200 kg drums, in 1000kg containers or in 20 tonnes tank.
Storage and shelf life:
When stored in its original unopened packaging at a temperature of between -20 and +50 ℃, They may be stored for up to 36month from its date of manufacture (expiry date). Comply with the storage instructions and expiry date marked on the packaging.
Exceed the date, no longer guarantees that the product meets specifications.
