摘要
Consolidation of thermoplastic unidirectional(UD)lami-nate with friction spun core yarns was investigated,espe-cially the characterization of filament bundles in consoli-dation was analyzed.The results showed that the bundleeffect was affected considerably by processing conditions(applied pressure and processing time).The boundaryof the bundles was disappeared under suitable processingconditions and finally an even fiber/resin distributioncould be attained.In consolidation,filament bundlesgetting close each other and resin flowing into the bundl-es occurred simultaneously,and eventually the bundleswere fully impregnated by the resin.Fiber packing den-sity in UD-laminate was the same as that of frictionspun core yarn(55%-65% in volume)and was not af-fected significantly by processing conditions under thecurrent experimental conditions.
Consolidation of thermoplastic unidirectional (UD) laminate with friction spun core yarns was investigated, especially the characterization of filament bundles in consolidation was analyzed. The results showed that the bundle effect was affected considerably by processing conditions (applied pressure and processing time). The boundary of the bundles was disappeared under suitable processing conditions and finally an even fiber/resin distribution could be attained. In consolidation, filament bundles getting close each other and resin flowing into the bundles occurred simultaneously, and eventually the bundles were fully impregnated by the resin. Fiber packing density in UD - laminate was the same as that of friction spun core yarn (55% - 65% in volume) and was not affected significantly by processing conditions under the current experimental conditions.
