CAJ | 학술논문

对预氧纤维进行预处理以达到脱除纤维中未环化分子的目的，借助X射线衍射（ XRD ），拉曼光谱（ Ra-man），红外吸收光谱（ FTIR）分析、差示扫描量热（ DSC）分析对两种不同纤度预处理前后的聚丙烯腈（ PAN）氧化丝进行了研究，并初步讨论了PAN纤维尺寸效应对预氧结构的影响机理。研究结果表明：同等条件下低纤度PAN纤维得到的预氧纤维环化程度较高，皮芯结构不明显，并且低纤度预氧纤维的环化结构中SP2杂化碳含量较高，且SP2杂化碳中芳香碳含量较高。
대예양섬유진행예처리이체도탈제섬유중미배화분자적목적，차조X사선연사（ XRD ），랍만광보（ Ra-man），홍외흡수광보（ FTIR）분석、차시소묘량열（ DSC）분석대량충불동섬도예처리전후적취병희정（ PAN）양화사진행료연구，병초보토론료PAN섬유척촌효응대예양결구적영향궤리。연구결과표명：동등조건하저섬도PAN섬유득도적예양섬유배화정도교고，피심결구불명현，병차저섬도예양섬유적배화결구중SP2잡화탄함량교고，차SP2잡화탄중방향탄함량교고。
Pretreating the stabilized PAN fibers to achieve the purpose of removing the non -cyclizing molecules .Two PAN fibers and two stabilized PAN fibers with different fineness were studied by means of X -ray diffraction (XRD),Ra-man spectroscopy ( Raman ) , infrared absorption spectroscopy ( FTIR ) analyzer , and differential scanning calorimetry ( DSC) analyzer ,and the mechanism of PAN fiber size affecting on the stabilized structure was discussed preliminarily .The results showed that:the cyclization degree of stabilized fiber which got from PAN fiber with lower fineness was higher under the same conditions,and there was not obvious skin -core structure.Besides,the SP2 hybridized carbon content in cycliza-tion structure of the stabilized fiber with lower fineness was higher ,and there was a higher proportion of aromatic carbon con-tent in SP2 hybridized carbon content .