Silicone Rubber Thermal Expansion Coefficient

2 2 4 silicone rubber sir silicone rubber sir is an elastomer composed of silicone containing silicon carbon hydrogen and oxygen in the form of a polymer.

Silicone rubber thermal expansion coefficient.

The coefficient of thermal expansion is defined as the change in length or volume of a material for a unit change in temperature. Key properties include thermal stability chemical stability electrical insulation and low toxicity. Silicones are polymers with a si o si backbone. Carbons 1 2 to 2 5 x 10 6 2 16 to 4 5 x 10 6.

There have been instances where a seal has ruptured a steel gland due to expansion when heated. Coefficient of thermal expansion silicone has a high thermal expansion coefficient and can be used as a temperature activation method or sensor in the design. For example silicone may expand linearly 5 9e 4 to 7 9e 4 in in c compared to aluminum at 23 0e 6 in in c or steel at 10 8e 6 in in c. Thermal expansion is usually expressed in one of two ways either volumetric expansion or more commonly linear expansion expressed as a coefficient.

Abs pipes pressure ratings pressure ratings of. Mse supplies stands behind our promise for h igh quality products with competitive pricing and dependable technical support from phd scientists. The coefficient of volumetric thermal expansion for all silicone rubber products is in the range of 5 9 to 7 9 x 10 4 4 c. Untreated silicone in gel or liquid form will convert to solid after curing.

If the seal is completely confined and the gland is 100 filled the dominating force is the force of thermal expansion of the rubber. The linear thermal expansion coefficient cte is dependent on the material from which an object is made. Song in progress in rubber nanocomposites 2017. 2 chart 2 plastics and other non metals.

Our dialometry testing services use netzsch dil 402 pc or similar instrument. The table at. The cte employs reciprocal temperature units k 1 f 1 c 1 etc representing the length change per degree per unit length e g in in f or mm mm c. There are different types depending on functional groups in the structure and curing mechanisms.

This expansion is an advantage for sealing applications. The curing method can be either vulcanized or catalyzed. Choose professional dilatometry and thermal expansion coefficient cte testing services from mse analytical services. These forces are generated by thermal expansion of the rubber and or swelling effect of a fluid.

Material properties material properties for gases fluids and solids densities specific heats viscosities and more. Thermodynamics effects of work heat and energy on systems. Temperature expansion thermal expansion of pipes and tubes stainless steel carbon steel copper plastics and more. Silicone rubber 190 0 x 10 6 342 0 x 10 6 mech.

Main applications are flexible seals o rings etc.