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化工学报  2015 

聚丙烯腈预氧丝预氧化程度表征分析

DOI: 10.11949/j.issn.0438-1157.20141369, PP. 1228-1233

Keywords: 聚丙烯腈预氧丝,预氧化程度,热性能,分析

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Abstract:

为考察红外光谱与热分析对聚丙烯腈原丝预氧化程度表征的准确程度,用傅里叶变换红外光谱仪、综合热分析仪等对PAN原丝及其预氧丝进行了测试。对红外光谱测试中各影响因素进行了探讨,并依此对不同预氧丝的红外光谱及相对环化率进行了分析。对原丝及预氧丝在不同气氛下的热性能进行了比较,并对其环化度进行了分析。结果表明:红外光谱与热分析均能定性反映出预氧丝的预氧化程度,而定量计算出的相对环化率则不具可比性,环化度会较真实值偏高。

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