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.

Silicone rubber coefficient of friction.

The relatively high coefficient of friction of silicone elastomers can limit the range of applications of these materials. μ static μ s or kinetic μ k frictional coefficient. 50 decrease in the coefficient of friction when coated silicone samples vs. A liquid silicone rubber top coat can be used to improve surface friction of silicone elastomer parts.

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. F f μ n 1. Dry rubber dry steel 0 80 0 76 0 95 dry rubber greasy steel 0 80 0 76 0 95. Rubber in contact with other surfaces can yield friction coefficients from 1 to 2.

Compared to steel silicone rubber is 2 to 7 times greater. The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it. The texture can be used to reduce the co efficient of friction. Steel is about 10.

The coefficient of friction of silicone rubber ranges from less than 0 25 to more than 0 75. Values outside this range are rarer but teflon for example can have a coefficient as low as 0 04. N normal force between the surfaces n lb there are at least two types of friction forces. 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. Most dry materials in combination have friction coefficient values between 0 3 and 0 6. A value of zero would mean no friction at all an elusive property. On many of our products processes are applied to reduce the coefficient of friction.

Non coated silicone samples are compared side by side. Silicone is naturally quite tacky with a coefficient of friction of approximately 1 0 in many cases. The friction values used in the material interaction table are generalized values based on the following references. Static cof kinetic cof 0 0 2 0 4 0 6 0 8 1 1 2 r 2182 substrate.

Bowden tabor the friction and lubrication of solids oxford. F f frictional force n lb. Static friction is friction between two or more solid objects that are not moving relative to each other. The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction.

For example static friction can prevent an object from sliding down a sloped surface. The frictional force can be expressed as. Lower durometers have higher coefficients.