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。

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.

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聚丙烯腈预氧化纤维(PAN OF)是一种新型耐高温的有机纤维，在防火、阻燃等领域具有广泛的应用前景。

PANOF is a new kind of high temperature resistance organic fiber, which is promising on the fields of fire-proof and flame retarding, etc.

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