【作者】 于美杰； 王成国； 朱波； 白玉俊； 王延相；

【Author】 Yu Meijie,Wang Chengguo,Zhu Bo,Bai Yujun,Wang Yanxiang (College of Materials Science and Engineering,Shandong University,Jinan 250061)

【机构】 山东大学材料科学与工程学院；

【摘要】 研究了聚丙烯腈基碳纤维原丝在连续式预氧化过程中纤维张力的变化规律,结果表明,在预氧化初期,纤维张力主要由外加牵伸比决定;而在预氧化后期,环构化反应成为决定张力大小的主要因素。在同一预氧化条件下,孔隙率低的原丝张力较高。更多还原

【Abstract】 Tension variation in continuous thermal stabilization progress of polyacrylonitrile fiber was investigated.The results indicate that thermal stabilization time,temperature and the porosity of PAN precursor,as well as stretching,have much effect on fiber tension.During the thermal stabilization,the characteristics of tension variation are different,which reflect different cyclization reaction mechanism.In initial stage,tension increase with increasing stretching,while in later stage,tension is mainly dependent on cyclization reaction.Under the same stabilization process, tension of low porosity precursor is higher than that of high porosity precursor.更多还原