新型炭材料Issue(2)：155-160,6.
聚乙二醇改性煤沥青半焦结构及其性能研究
The effect of coal-tar pitch modification with polyethylene glycol on its properties and the semi-coke structure derived from it
摘要
Abstract
Polyethylene glycol-200 and-400 were used to modify coal-tar pitch using p-toluene sulfonic acid as a catalyst. The chemical properties of the modified pitches and the microstructure of the derived cokes were studied. Results showed that theβresin contents were increased by 52-55 wt.%, the residual carbon yield at 800℃ was increased by 18 wt.%, the vibration absorption fre-quency of C=C bond in aromatic rings increased significantly, and the condensation degree was improved after the modification. The modification reactions occurred at the positions of aromatic hydrogen. The viscosities of the pitch modified with PG-400 and-200 are respectively lower and higher than that of the pristine pitch. The fibrous structure of the semi-coke from the PG-200 modified pitch was significantly improved and its degree of ordering and stack height of graphene layers were also increased significantly.关键词
改性煤沥青/聚乙二醇/半焦/结构Key words
Modified coal-tar pitch/Polyethylene glycol/Semi-coke/Structure分类
化学化工引用本文复制引用
解小玲,赵彩霞,张怀平,曹青..聚乙二醇改性煤沥青半焦结构及其性能研究[J].新型炭材料,2014,(2):155-160,6.基金项目
国家自然科学基金(51174144) （51174144）
山西省科学技术发展计划项目(201103210392-02).@@@@National Natural Science Foundation of China (51174144) （201103210392-02）
Shanxi Province Scientific Key Project (20110321039-02) （20110321039-02）
