Silicone Rubber Thermal Expansion Coefficient

The overall coefficient is the linear thermal expansion in per degree.

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. 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. 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. Silicone rubber 190 0 x 10 6 342 0 x 10 6 mech.

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. Untreated silicone in gel or liquid form will convert to solid after curing. There are different types depending on functional groups in the structure and curing mechanisms. Generally linear thermal expansion is most applicable to solids.

Main applications are flexible seals o rings etc. Abs pipes pressure ratings pressure ratings of. Thermodynamics effects of work heat and energy on systems. These forces are generated by thermal expansion of the rubber and or swelling effect of a fluid.

2 chart 2 plastics and other non metals. Choose professional dilatometry and thermal expansion coefficient cte testing services from mse analytical services. The coefficient of thermal expansion is defined as the change in length or volume of a material for a unit change in temperature. Silicones are polymers with a si o si backbone.

Temperature expansion thermal expansion of pipes and tubes stainless steel carbon steel copper plastics and more. Mse supplies stands behind our promise for h igh quality products with competitive pricing and dependable technical support from phd scientists. Carbons 1 2 to 2 5 x 10 6 2 16 to 4 5 x 10 6. 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 table at. The linear thermal expansion coefficient cte is dependent on the material from which an object is made. Find linear thermal expansion coefficient α and volumetric coefficient for thermal expansion β at 20 c for rubber or for different material like brass copper concrete lead silver water and more. This expansion is an advantage for sealing applications.

Our dialometry testing services use netzsch dil 402 pc or similar instrument. Material properties material properties for gases fluids and solids densities specific heats viscosities and more. 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. There have been instances where a seal has ruptured a steel gland due to expansion when heated.

Thermal expansion is usually expressed in one of two ways either volumetric expansion or more commonly linear expansion expressed as a coefficient.