聚丙烯腈纤维热稳定化程度的评估分析  

Evaluation on the extent of thermal stabilization of polyacrylonitrile fiber

作　　者：杨志军 黄有平 马雷 常欢 叶南飚 郭宝春[2] 黄险波 Yang Zhijun;Huang Youping;Ma Lei;Chang Huan;Ye Nanbiao;Guo Baochun;Huang Xianbo(National-certified Enterprise Technology Center,Kingfa Science and Technology Co.,Ltd.,Guangzhou 510520;School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640)

机构地区：[1]金发科技股份有限公司企业技术中心,广州510520 [2]华南理工大学材料科学与工程学院,广州510640

出　　处：《化工新型材料》2021年第9期89-92,97,共5页New Chemical Materials

基　　金：广东省科技计划项目(2019B010928001)。

摘　　要：为了准确评估聚丙烯腈(PAN)纤维的热稳定化程度,综合采用红外光谱仪、差示扫描量热分析仪以及梯度密度计对不同稳定化程度的PAN纤维样品进行测试并获得其相对环化率、环化度以及体密度等指标,分析了这些表征方法的特点并对比评估这些表征方法的适用性。结果表明:3种评估方法都能够定性反映纤维样品的热稳定化程度变化,其中样品的相对环化率及体密度变化趋势一致,表明两者能够定量地评估该纤维样品的稳定化程度,而环化度仅适用于评估热稳定化程度较低的样品。In order to evaluate the extent of thermal stabilization of polyacrylonitrile(PAN)fiber accurately,the relative cyclization ratio,cyclization index and bulk density of PAN fiber samples with different extent of stabilization were obtained by fourier transform infrared spectroscopy,differential scanning calorimetry and density gradient column methods,respectively.The characteristic and applicability of these evaluation methods were analyzed.The results indicated that the extent of thermal stabilization of PAN fiber can be qualitatively evaluated by the adopted methods.The relative cyclization ratio and bulk density of samples showed similar evolution trends which indicated they may quantitatively evaluate the extent of thermal stabilization of PAN fibers while cyclization index was only suitable for PAN fibers with lower extent of stabilization.

关 键 词：聚丙烯腈 热稳定化程度 相对环化率 环化度 体密度 

分 类 号：TQ342.742[化学工程—化纤工业]