高强高模碳纤维用高等规聚丙烯腈的DSC研究  

DSCDSC studies on high-tacticity polyacrylonitrile for high module and high strength carbon fiber

作　　者：许志献[1,2] 赵珏藏[3] 徐晶[1] 徐樑华[1] 金日光[1] 

机构地区：[1]北京化工大学资源综合利用国家重点实验室,北京100029 [2]安阳师范学院化学化工学院,安阳455000 [3]濮阳职业技术学院,濮阳457000

出　　处：《化工新型材料》2009年第3期91-93,共3页New Chemical Materials

基　　金：国家自然科学重点基金(50333060)

摘　　要：制备了不同三单元等规含量的聚丙烯腈(at-PAN,mm=0.27;iso-PAN,mm=0.64),测定了高等规度PAN和低等规度PAN的TG及DSC,并进行了比较;研究了金属离子含量、气氛中氧的浓度对高等规度PAN的TG及DSC的影响,提出了金属离子及氧的作用机理;在空气气氛下模拟了预氧化过程,制备了不同预氧化时间下的高等规度及低等规度PAN的预氧化样品,考察了在260℃不同预氧化时间下高等规度及低等规度PAN样品的DSC,并对其放热量进行了比较。Polyacrylonitrile with different tacticity was prepared （ at-PAN, mm= 0. 27, iso-PAN mm = 0. 64） ; TG and DSC curves were measured and compared between at-PAN and iso-PAN; Investigation of the effect of volume of metal ion in iso-PAN and concentration of oxygen in atmosphere on TG and DSC was carried out and mechanism was put forward ; Pre-oxidation samples of iso-PAN and at-PAN heat treated at different temperatures for different time were prepared by simulating pre-oxidation under air atmosphere, DSC investigation of pre-oxidation samples of iso-PAN heat treated at 260℃ for different time were carried and their exothermic volume was compared.

关 键 词：高等规度PAN 预氧化 TG DSC 

分 类 号：TQ342.3[化学工程—化纤工业]