Polymer, Vol.39, No.21, 5069-5073, 1998
Blending thermotropic liquid crystal and thermoplastic polymers for microreinforcement
A new process to obtain fibrous shaped thermotropic liquid crystal domains in bulk forms by proper blend processing with engineering thermoplastic polymer systems is presented. Normally, unless such a blend has experienced high elongational how, the liquid crystalline domains are globular in shape and provide little or no improvement in tensile mechanical properties. One solution to this dilemma was to make the liquid crystalline domains small enough so that their size approaches that of microvoids in the thermoplastic polymer system. Preliminary investigations were made to demonstrate the process. It was then successfully applied to a thermoplastic polymer for use in aircraft interior panels. Besides the tensile mechanical property improvement, several other properties were greatly improved. One of these was fracture toughness, which doubled in value.
Keywords:COMPOSITES;EXTRUSION