Dimethyl silicone oil are used as: 1.Thermostatic fluids (-50℃ to +200℃) 2.Anti-blotting products for photocopying machines 3.Thinning and plastifying agents for RTV’s and silicone sealants 4.Raw material for Antifoam 5.Lubricating in maintenance products (polishes,wax polishes,floor and furniture polishes,etc.) 6.Paint additives (anti-cratering,anti-floating/flooding and anti-scratching effects,etc.) 7.Water repellent trestment: of powders (for paints and plastics) / of fibres: glass fibres 8.Release agents (mould release of plastics and metal castings) 9.Lubricants (lubrication of elastomers or plastics on metal) 10.Surfactants for styrene-butadiene foam 11.HCR application to reduce hardness
Advantages:
Dimethyl silicone oil has the following properties: 1.Low surface tension 2.High compressibility 3.Good resistance to high and low temperature 4.Good combustion resistance 5.Absence of aging upon exposure to atmospheric agents 6.Good oxidation resistance 7.Little change in viscosity with temperature 8.Good resistance to high and prolonged shear stress
Characteristics:
Properties
Dimethyl silicone oil
47V50
47V100
47V300
47V350
47V500
47V1000
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
Flass 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
10.5 10-4
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,approx
0.59
0.60
0.62
0.62
0.62
0.62
Viscosity/temperature coefficient = 1-(viscosity at 99℃/Viscosity at 38℃)
