CAJ | 학술논문

高等规聚丙烯腈可作高强高模碳纤维的原丝,但对其预氧化过程的研究很少.为了对比,采用两种样品:高等规聚丙烯腈(iso-PAN)和无规聚丙烯腈(at-PAN),并用XRD图考察了两种PAN从线形结构过渡到环型结构的变化.为了定量地考察它们的差别,运用了JRG群子统计理论,发现随温度升高,高等规PAN比无规PAN成环越容易,环化程度高,通过计算得知PAN高等规PAN的活化能低于无规PAN,这为制造高强高模碳纤维提供了新的前提材料.
고등규취병희정가작고강고모탄섬유적원사,단대기예양화과정적연구흔소.위료대비,채용량충양품:고등규취병희정(iso-PAN)화무규취병희정(at-PAN),병용XRD도고찰료량충PAN종선형결구과도도배형결구적변화.위료정량지고찰타문적차별,운용료JRG군자통계이론,발현수온도승고,고등규PAN비무규PAN성배월용역,배화정도고,통과계산득지PAN고등규PAN적활화능저우무규PAN,저위제조고강고모탄섬유제공료신적전제재료.
High Isotactic polyacrylonitrile can be used to prepare high strength and high module carbon fiber. In this paper, chain configuration of high isotactie Polyacrylonitrile (iso-PAN) and atctism polyacrylonitrile (at-PAN)is stud-ied via x-ray diffraction (XRD), which was transformed from line in to ring in preoxidation process. Sub-cluster statistical theory was used to quantitative analysis the difference with the increasing of temperature, the form of iso-PAN's ring be-came easier. Activation energy was calculated, and proved that iso-PAN was easier to reaction during the low temperature.