中南大学学报（自然科学版）2011，Vol.42Issue(11)：3320-3325,6.
某国产聚丙烯腈原丝的预氧化研究
Study on pre-oxidative stabilization of domestic polyacrylonitrile fibers
摘要
Abstract
The domestic polyacrylonitirle (PAN) fibers were pre-oxidated in the production line of carbon fibers. Thermal analysis of domestic polyacrylonitrile fibers was carried out by means of DSC, in order to define the temperature of stabilization. And the study of PAN-based fibers in the different pre-oxidation stages was investigated by means of elemental analyzer, FTIR, and X-ray diflractrometry. The results indicate that the density of fibers increases with the increase of temperature, and the density is up to 1.366 g/cm3. The oxygen element content increases when temperature rises, and the higher the temperature, the faster the increment, yet the other element contents change slowly. FTIR result shows that the peak of 2 243.1 cm"1 band for the nitrile decreases, a new peak of 1 612.2 cm"1 (C=N stretch vibratory) increases gradually, and fibers' linear chains convert to thermotolerant ladder structure. XRD result illustrates that the peaks around 17°and 29° decrease, and are in place of a broad peak. The shrinkage and the loss of preferred orientation occur, the original ordered structure disappears, and the fibers form new disordered ladder compound.关键词
聚丙烯腈原丝/预氧化/炭纤维Key words
polyacrylonitrile fibers/ pre-oxidation/ carbon fibers分类
化学化工引用本文复制引用
杨波,张红波,汪学锋..某国产聚丙烯腈原丝的预氧化研究[J].中南大学学报（自然科学版）,2011,42(11):3320-3325,6.基金项目
国家重点基础研究发展计划("973"计划)项目(2006CB00902) （"973"计划）
