Anti-electrostatic electric discharge performance of ZnO/Silicone rubber composite with nonlinear conductivity

With rapid improvement of the integration level of electronic products, the electrostatic discharge capacity of the electronic components gradually decreases and finally become electrostatic sensitive devices. Due to their non-linear characteristics of conductance and dielectric, non-linear composite materials are expected to play a significant role in anti-static electronic devices. In this paper, ZnO/silicone rubber non-linear composite material was prepared. The non-linear conductivity was characterized by a source meter. According to IEC 61000-4-2, the study compared the discharge performance of ZnO/silicone rubber composite film, silicon rubber film and copper film. The results of the experiment reflect that the non-linear composite film can reduce the electrostatic voltage from 0.67 kV to 0 within 1μs. The silicone rubber film was able to reduce the electrostatic voltage from 4 kV to 0 within 100 ms. The copper film can reduce the electrostatic voltage from 3.2 kV to 0 within 100 ns. ZnO/silicone rubber composites with non-linear conductivity show promising prospect on anti-electrostatic discharge in electronic devices considering the discharge speed and electromagnetic effect.