Effect of Substrate Plasma Treatment on the Performance of PTFE Microwave Substrate
The surface treatment of polytetrafluoroethylene(PTFE)substrate was carried out by plasma treatment.The effects of gas flow rate,discharge power and treatment time on the microstructure and contact angle of PTFE substrate were studied,and then the effects on the dielectric loss,water absorption and peel strength of PTFE microwave substrate were studied.The experimental results show that plasma treatment can effectively increase the surface roughness of the substrate,reduce the contact angle of the PTFE substrate,improve its surface energy and the bonding strength between the copper foil and the dielectric layer.The peeling strength of the prepared PTFE microwave substrate can be nearly three times that of the untreated PTFE substrate.
万方数据
维普
