Conductive additive

Used liquid silicone rubber as insulating matrix and nano conductive carbon black particles as filling materials to make composites with excellent conductivity. Through experimental tests, the resistivity of composites with different carbon black content was obtained. When the mass fraction of carbon black was greater than 4%, better conductivity could be obtained. Zou Rui et al. Prepared conductive silicone rubber with vinyl liquid silicone rubber as matrix and nickel plated graphite as conductive filler. It was found that when the amount of nickel plated graphite was 280 phr, the volume resistivity of the composite could be reduced to less than 0.1 Ω· cm.

Thermal conductive additive


Additive liquid silicone rubber is widely used in electronic and electrical industry because of its good thermal stability and thermal conductivity. As the heat dissipation material of electronic devices, addition liquid silicone rubber can effectively transfer heat, improve heat dissipation and prolong the service life of electronic devices. However, the thermal conductivity of addition liquid silicone rubber without thermal conductivity additives is very small and can not be produced in industry. Common heat conduction additives include AG, Cu, CA, Al2O3, AlN, BN, etc. The type, content, particle distribution and surface modification of thermal conductive additives can affect the thermal conductivity of liquid silicone rubber.


Special functional additives


In addition to the above additives of additive liquid silicone rubber, researchers prepared special functional additives to give special properties to additive liquid silicone rubber. Aiming at the problem that algae microorganisms are easy to grow on the surface of silicone rubber materials, resulting in the reduction of hydrophobicity on the surface of silicone rubber materials,  added cinnamon oil, thyme oil and oregano oil to the addition liquid silicone rubber. It is found that adding three kinds of plant essential oils can improve the algae resistance of addition liquid silicone rubber.