Study on resistance welding process of PPS/CF composite

Using the heat production characteristics of carbon fiber fabrics to study the electrical welding process of PPS/CF laminates. The test proves that the carbon fiber resistance decreases with the increase of the temperature, and the carbon fiber heats up. The reason for the increase in nonlinearity. By the DSC test, the PPS melting temperature range was obtained. The micro-morphology of the joint was analyzed by LSCM. The LSS test of the joint was obtained. The main welding process parameters of the resistance welding of the PPS/CF laminate were obtained. (Welding temperature, welding pressure and cooling rate) and its influence on the joint forming and mechanical properties. The results show that the optimized process parameters are welding temperature 390 °C, welding pressure 0.6 MPa, and cooling rate 20 °C/min. At this time, the welded joint has the highest shear strength, which can reach the base material's own shear strength 65%.