Abstract
Thermal compacting of previously prepared ultra-high molecular weight polyethylene (UHMWPE) fiber laminates can raise its melting temperature and crystallinity. In this article, thermal shrinkage and the effect of post hot compaction on a commercial UHMWPE fiber laminate at various temperatures was investigated. The temperature range of post hot compaction was between 115 and 145°C, while other processing parameters like pressure, time, and cooling rate were kept constant during compaction. The shrinkage of the fiber laminates increased slowly up to 138°C; as soon as the temperature passed 140°C, the shrinkage increased rapidly and reached its maximum value very quickly. The crystallinity of the fiber laminates increased with rising temperature up to 135°C, then decreased at 145°C.
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