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| Effect of Extraction Method and Content of γ-Resin on Wetting Property of Coal Tar Pitch |
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Received:February 27, 2019
Revised:March 02, 2019
Accepted:March 04, 2019
Published Online:June 17, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.07.009 |
| KeyWord:coal tar pitch; softening point; coking value; wettability |
| Author | Institution |
| Fan Mingru |
贵州师范大学 材料与建筑工程学院 |
| Liu Wei |
贵州师范大学 材料与建筑工程学院 |
| Li Yang |
贵州师范大学 材料与建筑工程学院 |
| Yao Zhen |
贵州师范大学 材料与建筑工程学院 |
| Zhang Nianbing |
贵州师范大学 材料与建筑工程学院;贵州省铝电解炭素材料工程技术研究中心 |
| Zhou Jun |
贵州师范大学 材料与建筑工程学院 |
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| Abstract: |
| In order to improve wetting property of coal tar pitch, chemical structure and pyrolysis characteristics of extracts extracted by toluene, benzene and xylene from modified asphalt were investigated by FT-IR combined with TG-DTG. The results show that infrared spectra and TG-DTG curves of three solvent extracts are basically similar. It can be considered that three extracts are basically similar. Modified asphalts are prepared by mixing different proportions of asphalt with three extracts to investigate effects of extraction method and content of γ-resin on softening point, coking value and wetting property of modified asphalt. The results show that softening point and coking value of modified asphalt drop with increase of extract content. Transformation time of contact angel fall to 0° drops. Three kinds of extracts will reduce softening point and coking value of modified asphalt and improve wetting performance of coal tar pitch. |
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