| 引用本文: | 邢国政,王富孟,张晓华,靳利娥,解小玲,曹青.石油沥青对煤焦油沥青焦结构和电性能的影响[J].材料科学与工艺,2017,25(4):44-49.DOI:10.11951/j.issn.1005-0299.20160325. |
| XING Guozheng,WANG Fumeng,ZHANG Xiaohua,JIN Lie,XIE Xiaoling,CAO Qing.Effect of petroleum pitch on the structure and electrical properties of coal tar pitch coke[J].Materials Science and Technology,2017,25(4):44-49.DOI:10.11951/j.issn.1005-0299.20160325. |
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| 摘要: |
| 为了研究石油沥青(PP)作为煤沥青添加剂对沥青焦结构及导电性能的影响，将精制煤沥青(RCTP)与PP混合共炭化，同时在机械搅拌的作用下制焦，并对共炭化过程中PP和机械作用产生的影响机理进行了探讨和分析.采用偏光显微镜、X射线衍射仪、热重分析仪、比表面分析仪对所制半焦的结构进行了分析，利用电化学石英晶体微天平及电阻率仪对所制针状焦的性能进行了考察.结果表明：当PP质量分数为10%、搅拌速率为100 r/min、以间歇搅拌方式所制针状焦，其纤维组织占比达到了67.9%，电阻率降为676 Ω·mm2/m，即PP和机械搅拌二者联合作用存在下可显著增加中间相各向异性组织和纤维组织的含量，有利于改善半焦结构，使其结构更加趋于有序，所得针状焦电阻率也得到明显降低.
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| 关键词: 煤沥青 石油沥青 中间相 机械作用 电阻率 |
| DOI：10.11951/j.issn.1005-0299.20160325 |
| 分类号:TB324 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(51174144). |
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| Effect of petroleum pitch on the structure and electrical properties of coal tar pitch coke |
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XING Guozheng, WANG Fumeng, ZHANG Xiaohua, JIN Lie, XIE Xiaoling, CAO Qing
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(Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China)
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| Abstract: |
| In order to study the effect of petroleum pitch (PP) as a coal tar pitch additive on the structure and electrical conductivity of pitch coke, the refined coal tar pitch (RCTP) was mixed with PP and co-carbonization., and tThe coke was prepared with the help ofunder mechanical agitation. MeanwhileAt the same time, the influence mechanism of PP and mechanical action in the process of co-carbonization was elaborateddiscussed and analyzed. The structure of the semi-coke was analyzed by polarizing microscope, X-ray diffraction, thermogravimetric analyzer and specific surface analyzer. The properties of the needle-like coke werecoke were studied by electrochemical quartz crystal microbalance and resistivity meter. The results showed that when the proportion of PP was 10% and the stirring speed was 100 rpm, the content of fiber was 67.9% and the resistivity was 676 Ω·mm2/m, for the case of 67.9 wt.% PP, and 100 rpm stirring speed. This suggested that Namely, in the presence of both PP and mechanical agitation can significantly improve the, the content of mesophase anisotropic tissue and fibrous tissue can be significantly increased, , and then facilitate the formation of homogeneousand the semi-coke structure is greatly improved. Meanwhile, the resistivity of obtainedresulting needle-like coke can also be obviously reduced.
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| Key words: coal tar pitch petroleum pitch mesophase mechanical action resistivity |
