含锆沥青热解缩聚行为研究

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含锆沥青热解缩聚行为研究
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作者单位:西安航天复合材料研究所
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中图分类号:TB332
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Characterization of Pyrolysis Condensation of Zirconium-Containing Pitch

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摘要:

利用TG/ DTG 方法对含锆沥青热解缩聚行为进行研究,并与基础沥青进行对比。结果表明:含

锆沥青与基础沥青热解反应特征相似,但比基础沥青热分解起始温度高,黏度大;随着升温速率的提高,含锆沥

青起始和终止的分解温度升高,DTG 峰形变尖锐,峰位向高温方向移动;含锆沥青与基础沥青表观活化能相

当,表明在现有锆含量下,含锆沥青的反应活性与基础沥青相比没有明显变化。

Abstract:

The pyrolysis condensation of zirconium-containing pitch was studied by means of TG/ DTG and was

compared to pitch. Results show that the pyrogenation reaction of pitch contain zirconium was similar to baselinepitch,

but initial pyrolysis temperature of zirconium-containing pitch was higher than baseline-pitch and viscosity was

greater. The initial pyrolysis temperature Ti and final pyrolysis temperature Tm increased with increasing the heating

rate and the peak of DTG curve became acute and moves to the high temperature orientation. The activation energy of

zirconium-containing pitch and based-pitch is close, which indicated that the reactive activity had no obvious change

under the current content of zirconium.

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肖春.含锆沥青热解缩聚行为研究[J].宇航材料工艺,2014,44(6).

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在线发布日期: 2016-11-28
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