Electrically conductive rubber profiles

Electrically conductive rubber profiles are specialized components used in a variety of applications requiring electromagnetic interference (EMI) shielding, electrical conductivity and environmental sealing. The manufacturing process of these profiles involves several steps:

1.Raw material preparation:
Select suitable raw rubber (e.g. silicone rubber, neoprene rubber, etc.) which have good dielectric constant.
Prepare conductive fillers, such as carbon black, carbon fiber, metal powder or silver-plated glass beads.

2.Mixing and stirring:
Mix the raw rubber with appropriate amount of softener, vulcanizing agent, stabilizer and other additives.
Add conductive fillers to ensure uniform dispersion. This step is critical because the distribution of the filler directly affects the conductivity of the final product.

3.Add conductive filler:
Accurately measure the amount of conductive filler according to the formulation requirements, usually a critical value needs to be reached to form a conductive network.

4.Grinding adjustment:
Further grinding or blending of the mixture to ensure good contact between filler particles and to improve conductivity.

5. Molding:
Molding or extruding the well-mixed rubber compound into the desired shape, such as an O-ring, sheet or specific seal.

6.Vulcanizing:
Curing and shaping of rubber by heating to cause a vulcanization reaction, ensuring its physical and mechanical properties and electrical conductivity.