Dimethylformamide(DMF)is widely used in leather industry, polyacrylonitrilefibre spinning and butadiene extraction craft as an important organic solvent.
Catalyst processing method is used to speed up the preoxidation of polyacrylonitrilefibre. 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。
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The production technique and forming mechanism of polyacrylonitrile carbon fibre are discussed and the main use of carbon fibre as well as its vast development vistas are expounded.