标题:Influence of pre-cyclic treatment of PAN on properties of pre-oxidized PAN fibers
作者:Yang, Yangong
作者机构:[Yang, Yangong ] College of Material, Shandong University of Technology, Zibo 255049, China
通讯作者:Yang, Y
来源:Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
出版年:2011
卷:27
期:4
页码:88-91
摘要:This thesis researched the influence of pre-oxidized polyacrylonitrile (PAN) fiber on mechanical property and flame retardancy using cyclization pretreatment method. The results show that better mechanical property and flame retardancy of pre-oxidized polyacrylonitrile fiber can be obtained by hydroxylamine pretreatment first and hydrazine hydrates pretreatment later, when the pre-oxidation temperature is 260 °C, the 36. 5% limiting oxygen index pre-oxidized poly acrylonitrile flame retardant fibers can be obtained. Taking an ulterior step of scanning electron microscope observe, by way of surface treatment and pre-oxidation the fiber's apparent-structure has been minor alteration; fiber's crackle has been clear reduced after surface treatment and restitute a little bit level after pre-oxidation. Infrared spectrum shows that although a few pyridyl structures have been produced after surface treatment, a lot of pyridyl structures produced after pre-oxidation. X-ray diffraction shows that by way of surface treatment and pre-oxidation the fiber's structure doesn't have so much change, in some level it's still be a quasicrystals ordered structures and composited by high lateral order and non-crystalline region.
收录类别:EI
资源类型:期刊论文
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