What is the viscosity of silicone oil?
10000 cSt
Silicone oil is a liquid based siloxane that is part of the methyl silicone fluid system. It has a viscosity of 10000 cSt with a refractive index of ~ 1.404 and a dielectric strength of ~ 15 kV/mm. It′s surface tension tends to increase with an increase in the viscosity.
What is the density of silicone oil?
9.3. 2 Silicones Properties
| Property | Units | Low Viscosity |
|---|---|---|
| Density | g/cc | 0.75–0.95 |
| Water absorption, 24 h | % | <0.03 |
| Glass transition temperature | °C | −128 |
| Refractive index | 1.375–1.4 |
Is silicone oil a Newtonian fluid?
Silicone oils are Newtonian fluids at typical laboratory temperatures and strain-rates (Galland et al., 2015) and at low molecular weight up to strain-rates of 1000 s-1 (http://www.dowcorning.com/content/discover/discoverchem/weight-vs-viscosity.aspx).
Is WD 40 a silicone oil?
WD-40 Specialist® Silicone Lubricant safely lubricates, waterproofs and protects metal and non-metal surfaces such as rubber, plastic and vinyl. This silicone lubricant spray is great for use on cables, pulleys, guide rails, valves, linkages, hinges, locks and more.
Does silicone oil oxidize?
Heat Resistance Silicone fluid is extremely stable against thermal oxidation. Methylphenyl silicone fluid exhibits even better heat resistance than dimethyl silicone fluid and can be used for long durations in environments reaching 250°C.
What is cSt rating?
The CST rating is the viscosity of the silicone. The higher the number the ticker and silicone is 100,000 cSt is like Cold molasses. 1000 cSt it’s more like vegetable oil.
Does silicone oil expand?
The general ‘rule of thumb’ for silicone oil is that it expands (or contracts) by approximately 10% per 100°C (1% per 10°C). Note that this relationship can vary depending on the temperature and the particular thermal fluid used.
How is the viscosity of silicone oil determined?
The viscosity of different types of silicone oil, which is expressed in centistokes (1 cs = 10 −6 m 2/s), arises from the molecular weight and from the length of the polymers: increasing a silicone oil’s molecular weight results in an increased polymer chain length and consequently an increase in its viscosity.
What are the advantages of using silicone oil?
The advantage of a silicone oil with an increasing extensional viscosity would seem to be an increased resistance to emulsification while maintaining a low viscosity and therefore an easier injection and removal with small gauge instrumentation with respect to single grade oils of the equivalent shear viscosity.
Why is surface tension important in silicone oil?
Surface tension is responsible for the shape of liquid droplets because it describes the forces that tend to keep a bubble whole. In general, for 1000 cs silicone oil, it is 40 mN/m (at 25°C) that is approximately one-third of that generated on an air bubble.
Why is silicone oil used in surgical procedures?
Silicone oils are very useful surgical tools because they are able to simplify the surgical management of many vitreoretinal diseases. With the modern vitrectomy systems and the possibility to use such different tamponades, the prognosis of several diseases has improved.