燃料化学学报2016，Vol.44Issue(7)：792-800,9.
基于醛类交联剂的煤焦油沥青族组分改性石油沥青
Asphalt modification with coal tar pitch component based on aldehyde crosslinkers
摘要
Abstract
Adopting tetrahydrofuran solubles of coal tar pitch ( THFS ) for petroleum asphalt modification, effects of different amounts of mixing, blending temperatures and cross-linking agent on the modified asphalt performance were examined. The optimum blending conditions were determined as amount of THFS, formaldehyde and trioxymethylene cross-linking agents being 8%, 0 . 8% and 0 . 2%, respectively at 135 ℃. Hexane soluble( HS) leads to the penetration and ductility of modified asphalt increase, but asphaltene( A) and preasphaltene( PA ) improve the temperature sensitivity and raise the softening point. The addition of cross-linking agent improves the aging performance of modified asphalt; the methyl ( CH3 ) and methylene ( CH2 ) transmission peak intensity of modified asphalt gradually become stronger; the substituted benzene ring transmission peak intensity at 770-730 cm-1 ,710-690 cm-1 and 770-810 cm-1 gradually increases, and C-O-C vibration transmission peak intensity of 1 010-1 270 cm-1 increases. The pyrolysis peak temperature moved to higher temperature, and the increase of char yield is about 2%. The modified particles exhibit a continuous distribution of flow lines, the streamline distribution of modified asphalt with adding trioxymethylene is more concentrated.关键词
石油沥青/煤沥青/改性/热解/交联剂Key words
petroleum asphalt/coal tar pitch/modification/pyrolysis/cross-linking agent分类
化学化工引用本文复制引用
刘媛媛,宋真真,杨燕红,黄晔,孙鸣,赵香龙,马晓迅..基于醛类交联剂的煤焦油沥青族组分改性石油沥青[J].燃料化学学报,2016,44(7):792-800,9.基金项目
The project was supported by National Natural Science Foundation of China (21406178), National High Technology Research and Development Program (863 program,2011AA05A2021), Ministry of Science and Technology Cooperation Projects (S2013GR0064), Shaanxi Province Natural Science Basic Research Program (2014JQ2070), Shaanxi Provincial Co-ordinator Innovation Projects (2012KTD 01-01-04), Doctoral Program of Higher Specialized Research Fund (20116101110019) and Northwestern University Research Fund Project (NG14029).国家自然科学基金(21406178),国家高技术研究发展计划(863计划,2011AA05A2021),国家科技部国际科技合作专项(S2013GR0064),陕西省自然科学基础研究计划(2014JQ2070),陕西省科技统筹创新工程计划(2012KTD 01-01-04),高等学校博士学科点专项科研基金(20116101110019)和西北大学科学研究基金(NG14029)资助 （21406178）
