Improvement of the thermal properties of pitch by waste plastic (polyvinyl chloride) addition

被引：7
作者：
Choi, Yun Jeong [1 ,2 ]
Kim, Ji Hong [1 ,3 ]
Im, Ji Sun [1 ,4 ]
机构：
[1] Korea Res Inst Chem Technol KRICT, C1 Gas & Carbon Convergent Res, Daejeon 34114, South Korea
[2] Chungnam Natl Univ, Dept Chem Engn & Appl Chem, Daejeon 34134, South Korea
[3] Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea
[4] Univ Sci & Technol UST, Daejeon 34113, South Korea
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 14卷
关键词：
Coal tar pitch; PVC; Co-pyrolysis; Polycondensation; Molecular weight; COAL-TAR PITCH; PYROLYZED FUEL-OIL; MESOPHASE PITCH; BENZOYL CHLORIDE; PETROLEUM PITCH; CARBON-FIBERS; DEGRADATION; PRESSURE; PFO;
D O I：
10.1016/j.jmrt.2021.08.080
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To modify the thermal properties of pitch by adding polyvinyl chloride (PVC), co-pyrolysis of PVC and coal tar pitch was performed. PVC decomposes into HCl and de-HCl PVC (polyene) above 200 degrees C, and these substances affect the synthesis behavior of coal tar pitch. It was confirmed that HCl induces cracking, promotes the radical reaction and lowers the polycondensation initiation temperature of coal tar pitch. Furthermore, aromatic components produced by the cyclization reaction of polyene participate in the polycondensation reaction, which increases the molecular weight of the pitch. This leads to an increase in softening point and coking value of pitch. The related mechanisms were assessed using thermal analysis (TGA, DTG, DSC) and molecular weight distribution analysis (MALDI-TOF). (C) 2021 The Author(s). Published by Elsevier B.V.
引用
收藏
页码：2845 / 2852
页数：8
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