Silicone Rubber Coefficient Of Friction

F f μ n 1.

Silicone rubber coefficient of friction.

On many of our products processes are applied to reduce the 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. A value of zero would mean no friction at all an elusive property. A liquid silicone rubber top coat can be used to improve surface friction of silicone elastomer parts.

Static friction is friction between two or more solid objects that are not moving relative to each other. The frictional force can be expressed as. The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction. The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it.

N normal force between the surfaces n lb there are at least two types of friction forces. For example static friction can prevent an object from sliding down a sloped surface. 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.

The relatively high coefficient of friction of silicone elastomers can limit the range of applications of these materials. Steel is about 10. Rubber in contact with other surfaces can yield friction coefficients from 1 to 2. The texture can be used to reduce the co efficient of friction.

F f frictional force n lb. The coefficient of friction of silicone rubber ranges from less than 0 25 to more than 0 75. Silicone is naturally quite tacky with a coefficient of friction of approximately 1 0 in many cases. It can be applied using conventional coating methods.

These processes include applying a small amount of talc to the silicone surface and post curing the silicone in an oven for several hours. Lower durometers have higher coefficients. As medical device designers account for friction one solution is self lubricating liquid silicone rubber lsr which eliminates an extra step to apply lubrication. Most dry materials in combination have friction coefficient values between 0 3 and 0 6.