Silicone Rubber Coefficient Of Friction

Most dry materials in combination have friction coefficient values between 0 3 and 0 6.

Silicone rubber coefficient of friction.

Nusil technology experts recently conducted a study to evaluate the static and kinetic coefficient of friction of coated versus non coated silicone surfaces. The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it. μ static μ s or kinetic μ k frictional coefficient. The force it takes to initiate movement between the silicone rubber and a steel panel static cof was measured as well as the force needed to keep the silicone rubber moving against.

These processes include applying a small amount of talc to the silicone surface and post curing the silicone in an oven for several hours. The texture can be used to reduce the co efficient of friction. A value of zero would mean no friction at all an elusive property. F f frictional force n lb.

The coefficient of friction of silicone rubber ranges from less than 0 25 to more than 0 75. A liquid silicone rubber top coat can be used to improve surface friction of silicone elastomer parts. F f μ n 1. Compared to steel silicone rubber is 2 to 7 times greater.

Values outside this range are rarer but teflon for example can have a coefficient as low as 0 04. Rubber in contact with other surfaces can yield friction coefficients from 1 to 2. Another solution is the use of a low cof silicone coating applied to the surface and then cured to chemically bond the coating to the substrate for a non tacky surface. N normal force between the surfaces n lb there are at least two types of friction forces.

As medical device designers account for friction one solution is self lubricating liquid silicone rubber lsr which eliminates an extra step to apply lubrication. Steel is about 10. It can be applied using conventional coating methods. The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction.

On many of our products processes are applied to reduce the coefficient of friction. Static friction is friction between two or more solid objects that are not moving relative to each other. The relatively high coefficient of friction of silicone elastomers can limit the range of applications of these materials. Lower durometers have higher coefficients.