Glossary

Electrically dissipative coating

By friction and separation of two touching materials (triboelectric charging) or by the influence of an electric field on a body (influence) electrostatic charges can arise. If these charges are not discharged in a controlled manner, interference with electronic devices and display errors with measuring devices can occur. In order to avoid this scenario, Rhenotherm has developed an electrically dissipative coating.

According to EN 13463-1 it can be assumed that an electrostatic charge is avoided if the surface resistance <= 10 9 Ohms.

The coating Rhenolub MK I RB 30 HD is a electrically dissipative coating which has a resistance value of 10 3 Ohm to 10 2 Ohm can achieve.

By friction and separation of two touching materials (triboelectric charging) or by the influence of an electric field on a body (influence) electrostatic charges can arise.

Due to this property, there is a risk of electrostatic charging. If such charged materials discharge by sparking, they can explode explosive atmospheres, as z. B. solvents / air mixtures, dust / air mixtures, explode.

In such applications, the uncoated elastomers can not be used. To be able to use the advantages of the elastomers for these areas as well, Rhenotherm has one electrically dissipative coating developed.

As a result, their conductivity is significantly increased, and their electrical resistance significantly lowered. By this measure, the electrical resistance of z. B. NBR of 10 11 Ohm on <10 2 Ohm be lowered. The elastomers become electrically conductive. When grounded, electrostatic charging can be safely prevented. In addition to the lowering of the volume resistance, the use of a further special additive gives the possibility to verify the homogeneity of the coating by means of UV light.

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