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杉木苯酚液化产物的动态黏弹性分析

DOI: CNKI:11-1801/TB.20110720.1418.022, PP. 132-136

Keywords: 液化,杉木,活化能,动态黏弹性

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Abstract:

为了研究杉木苯酚液化工艺过程中液化产物动态黏弹性的变化规律,采用动态黏弹性分析(DMA)方法,在频率1、10、50Hz,温度-120~100℃条件下,测定了不同液化工艺因素制备的杉木苯酚液化产物的存储模量E'和损耗因子tgδ温度谱和频率谱,讨论了液化工艺因素对杉木苯酚液化产物动态黏弹性的影响。结果表明:在测试温度范围内液化产物存在一个玻璃转化温度Tg;0~50℃范围内有一个α'松弛过程,50~100℃范围内有一个α″松弛过程,且α″松弛过程的活化能高于α'的活化能,α'的活化能随着液化时间增加而增大,α″的活化能则随着苯酚与杉木质量比的增加而减小。

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