The effect of titanium dioxide on the moisture absorption of polyamide 6 prepared by T-RTM

Abstract

Abstract In recent years, the replacement of metal components with composites is becoming more and more common in the automotive industry. Thermoplastic composites are recyclable, which meets requirements. Impregnating the reinforcing material is difficult but caprolactam is a good choice because in melt state, it has similar viscosity to that of water. Polyamide 6 can be produced from caprolactam by ring opening in-situ polymerisation. We produced PA 6 samples from caprolactam using T-RTM. We examined the effects of the manufacturing parameters on morphology on residual monomer content and crystalline proportion. Then we filled the samples with TiO2 and examined the same parameters. Finally, we tested the effects of crystallinity, residual monomer content and the filler on moisture absorption.