1·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。
2·Catalyst processing method is used to speed up the preoxidation of polyacrylonitrile fibre. The catalysis results are evaluated with the aid of DSC curves.
为加快聚丙烯腈纤维的预氧化速度，采用催化剂处理方法，借助于DS C曲线来评定催化效果。
3·The hydrolysis of olive oil catalyzed by surfactant-coated lipase in a biphase system was studied in a hollow fiber membrane reactor made of hydrophilic polyacrylonitrile.
在聚丙烯腈中空纤维膜反应器油-水两相体系中，使用表面活性剂包衣酶催化水解橄榄油。
4·The polyacrylonitrile powder was hydrolyzed in a caustic solution. The obtained product was treated by either crosslinking or adding an external crosslinking agent to produce the absorbent resin.
将聚丙烯腈粉末用碱水解，所得到的产物分别用外加交联剂法和热交联法交联，制备高吸水性树脂。
5·The invention relates to a polyacrylonitrile fiber for preventing skin from light aging, a preparation method and application thereof.
本发明涉及一种防止皮肤光老化的聚丙烯腈纤维及其制备方法和应用。