Preparation and pyrolysis behavior of modified coal tar pitch as C/C composites matrix precursor
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- 作者：Alei Danga ; dangalei@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Hao Lia ; Tiehu Lia ; Tingkai Zhaoa ; Chuanyin Xionga ; Qiang Zhuangb ; Yudong Shanga ; Xudong Chena ; Xianglin Jia
- 关键词：Coal tar pitch ; Phenolic resin ; Modification ; C/C composites ; Pyrolysis behavior
- 刊名：Journal of Analytical and Applied Pyrolysis
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：119
- 期：Complete
- 页码：18-23
- 全文大小：1759 K
文摘
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Coal tar pitch (CPT) was modified by phenolic resin (PF) in the presence of p-toluene sulfuric (PTS) as catalyst.
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The high molecular weight aromatic species in modified CPT is found and also confirmed by the results from FT-IR and TGA analysis.
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Carbon yield of modified CTP have improved by 13% and soft point decreased by 25 °C compared with CPT.
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The modification contributes to an improvement in the optical textures of resultant matrix precursor materials of C/C composites.