Coefficient Of Thermal Expansion Of Nitrile Rubber

The filler effect was apparent a temperature range of 20 to 40 c.

Coefficient of thermal expansion of nitrile rubber. The filler in hnbr reduced the thermal expansion coefficient to zero. If the seal is completely confined and the gland is 100 filled the dominating force is the force of thermal expansion of the rubber. Coefficient of thermal expansion. This expansion is an advantage for sealing applications.

These forces are generated by thermal expansion of the rubber and or swelling effect of a fluid. Temperature expansion thermal expansion of pipes and tubes stainless steel carbon steel copper plastics and more. Thermodynamics effects of work heat and energy on systems. 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.

Silicone rubber 190 0 x 10 6 342 0 x 10 6 mech. Material properties material properties for gases fluids and solids densities specific heats viscosities and more. Elastomers such as hydrogenated nitrile butadiene rubber hnbr are known to have inferior dimensional stability upon temperature changes compared to metallic materials. 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.

Addition of fillers reduces the value slightly. There have been instances where a seal has ruptured a steel gland due to expansion when heated. The overall coefficient is the linear thermal expansion in per degree. The coefficient of thermal expansion is defined as the change in length or volume of a material for a unit change in temperature.

This can result in. Abs pipes pressure ratings pressure ratings of. Carbons 1 2 to 2 5 x 10 6 2 16 to 4 5 x 10. Find linear thermal expansion coefficient α and volumetric coefficient for thermal expansion β at 20 c for different material like brass copper concrete lead silver water and more linear thermal expansion coefficient α at 20 c for rubber is 77 x 10 6 c and volumetric coefficient for thermal expansion β at 20 c is 231 x.

The coefficient of thermal expansion for elastomer is approximately 4 8 x 10e 04 k similar to a hydrocarbon liquid. Nitrile butadiene rubber nbr is a family of unsaturated copolymers.