Relation among feeding roving gauge,twist factor and yarn property were researched,property of polyacrylonitrile preliminary heat treatment in oxidizing polyester filament core-spun yarn was tested.

• 研究了喂入粗纱间距、捻系数与成纱性能的关系,测试分析了聚丙烯腈预氧化纤维涤纶长丝包芯纱的性能。