Preparation and pyrolysis behavior of modified coal tar pitch as C/C composites matrix precursor

被引：29

作者：

Dang, Alei ^{[1
]}

Li, Hao ^{[1
]}

Li, Tiehu ^{[1
]}

Zhao, Tingkai ^{[1
]}

Xiong, Chuanyin ^{[1
]}

Zhuang, Qiang ^{[2
]}

Shang, Yudong ^{[1
]}

Chen, Xudong ^{[1
]}

Ji, Xianglin ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Sch Sci, Dept Appl Chem, Xian 710072, Peoples R China

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2016年 / 119卷

关键词：

Coal tar pitch; Phenolic resin; Modification; C/C composites; Pyrolysis behavior; RESULTANT SEMI-COKES; CARBONIZATION BEHAVIOR; CARBON/CARBON COMPOSITES; OPTICAL TEXTURE; POLYMER COMPOSITIONS; CARBON MATRIX; INFILTRATION;

D O I：

10.1016/j.jaap.2016.04.002

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Medium-temperature coal tar pitch (CPT) which is used as C/C composites matrix precursor is modified by phenolic resin (PF) in the presence of p-toluene sulfuric (PTS) acid as catalyst. Fourier transform Infrared (FT-IR) spectroscopy techniques, polarized-light microscopy and thermaogravimetric analysis (TGA) are employed to study on structure and thermal behavior of the modified CPT, respectively. Results show that the high molecular weight aromatic species in modified CPT is found and also confirmed by the results from FF-IR and TGA analysis. Otherwise, coking yield of modified CTP has improved by 13% and soft point decreased by 25 degrees C compared with raw CPT. Moreover, the modification contributes to an improvement in the optical textures of resultant matrix precursor materials of C/C composites. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：18 / 23

页数：6

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