Silicone Rubber Coefficient Of Friction

The frictional force can be expressed as.

Silicone rubber coefficient of friction.

Steel is about 10. For example static friction can prevent an object from sliding down a sloped surface. F f frictional force n lb. It can be applied using conventional coating methods.

Static friction is friction between two or more solid objects that are not moving relative to each other. 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. 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. Compared to steel silicone rubber is 2 to 7 times greater.

Rubber in contact with other surfaces can yield friction coefficients from 1 to 2. The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it. Most dry materials in combination have friction coefficient values between 0 3 and 0 6. A liquid silicone rubber top coat can be used to improve surface friction of silicone elastomer parts.

Values outside this range are rarer but teflon for example can have a coefficient as low as 0 04. F f μ n 1. Silicone is naturally quite tacky with a coefficient of friction of approximately 1 0 in many cases. As medical device designers account for friction one solution is self lubricating liquid silicone rubber lsr which eliminates an extra step to apply lubrication.

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 relatively high coefficient of friction of silicone elastomers can limit the range of applications of these materials. The coefficient of friction of silicone rubber ranges from less than 0 25 to more than 0 75. A value of zero would mean no friction at all an elusive property.

The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction. μ static μ s or kinetic μ k frictional coefficient. Lower durometers have higher coefficients. On many of our products processes are applied to reduce the coefficient of friction.