含锆沥青热解缩聚行为研究  

Characterization of Pyrolysis Condensation of Zirconium-Containing Pitch

作　　者：肖春[1,2] 谷炎 张玲[1] 邹武[1] 程文[1] 

机构地区：[1]西安航天复合材料研究所,西安710025 [2]高性能碳纤维制造及应用国家地方联合工程研究中心,西安710089

出　　处：《宇航材料工艺》2014年第6期30-33,41,共5页Aerospace Materials & Technology

摘　　要：文摘利用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。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 baseline- pitch, 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.

关 键 词：锆 沥青 热解缩聚 

分 类 号：TB332[一般工业技术—材料科学与工程]