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Technical Paper

New Low Cost High Performance Materials for Automotive Connectors and Light Sockets

The QUESTRA* Crystalline Polymer product family, based on syndiotactic polystyrene (SPS), has been improved to meet the needs of the automotive connector and light socket applications in a very cost effective manner. In this paper, the attributes of two new SPS formulations, SPS/polyamide (PA) blends and low gas SPS formulations, are compared to existing SPS formulations and competitive resins. It is shown that the SPS/PA blends have significantly improved strength and ductility over existing SPS formulations. This improves the SPS formulation technology to include the full range of strength and ductility options the designer of automotive connectors needs to achieve the terminal retention forces and latch deflection distances necessary for the smaller connectors like the .64 mm terminal systems that the automotive industry is migrating towards.