Microstructural Morphology of Molded Thin Composites of Thermotropic Liquid Crystalline Polymer and Polymer 6

Abstract

Microstructural morphology of moulded composites of thermotropic liquid crystalline polymer(LCP) and polyamide 6 (PA6) was studied as a function of epoxy fraction. Injection molding of a thin composite plaques from extruded LCP/PA6 pellets at a temperature below the melting point of the LCP fibrils generated a multi-layered structure: The surface skin layer with a thickness of 65-120micrometers indicated a trandverse orientation. The plaque containing 4.8vol% epoxy exhibited superior bending strength and large fracture strain.