High Viscosity Silicone Oils IOTA PDMS 47V5000 - 47V500000
Description:
IOTA PDMS 47V5000 - 47V500000 (viscosities
5 000 - 10 000 - 12 500 -30 000 - 60 000 - 300 000 – 500 000) are
dimethylpolysiloxane polymers with linear chains.
Applications:
Antiadherent agents: mould release of plastics
and metal castings,
Lubricants:
lubrication of elastomers and plastics on metal,
Hydraulic damping fluids,
Additives
in maintenance products (wax polishes, floor and furniture polishes, etc.).
Advantages:
Good thermal stability,
Good
resistance to combustion,
Good
dielectric properties,
Low
freezing point,
Low
surface tension,
High
compressibility,
Good
oxidation resistance,
Absence
of ageing under exposure to weather conditions,
Low
variation of viscosity with temperature,
Good
shear resistance,
Non
miscible with most of organic materials,
Soluble
in aromatic, aliphatic and chlorinated solvents,
Insoluble
in water and alcohols.
Characteristics:
Appearance.................................................................
clear-colorless liquids
Viscosity at 25℃,mm2/s,approx.................................................... 5 000 - 500 000
Specific gravity at 25℃,approx........................................................ 0.973
Flash point(open cup),℃,...........................................................
>300
Fire point, °C
............................................................
>350
Pour point,℃,approx........................................... -
45
Refractive index at 25℃,approx. .......................... 1.404
Surface tension at 25℃, mN/m, approx. ................. 21.1
Vapor tension at 200℃,Pa,approx. ...................... 1.33
Expansion coefficient between 25℃ and 100℃,cm3/(cm3·℃), approx, ...... 9.45*10-4
Specific hear between 40℃ and 200℃:
- J/(g·K), approx ............................................. 1.50
- Cal/(g·K), approx .......................................... 0.36
Themal conductivity,W/(m·K),approx...................
0.16
Viscosity/temperature coefficient[1],approx........... 0.62
Dielectric strength at 25℃,KV/mm,approx. ............ 18
Permittivity at 25℃,approx. ....................................... 2.80
Dielectric dissipation factor at 25℃ and 100kHz,appro..................... 1*10-4
D.C. resistivity at 25℃, Ω·cm,approx..................................................... 1*1015
[1] Viscosity/temperature coefficient=1-(Viscosity
at 99℃/ Viscosity
at 38℃)
Packaging:
IOTA
PDMS 47V5000-47V500000 are available
in 25 and 200 kg drums, in 1000kg containers or in tankers.
Storage and shelf life:
When
stored in its original unopened packaging at a temperature of between -20 and
+50 ℃, IOTA 47V5000-47V500000 may be stored for up to 36months from its date of manufacture (expiry date). Comply
with the storage instructions and expiry date marked on the packaging.
Past
this date, IOTA no longer guarantees that the product meets the sales
specifications.