高软化点包覆沥青的制备与表征  

Preparation and characterization of high softening point coating pitch

作　　者：孙书双 余华 徐允良 吴雷 朱亚明[1,2] 赵雪飞[1,2] SUN Shu-shuang;YU Hua;XU Yun-liang;WU Lei;ZHU Ya-ming;ZHAO Xue-fei(Institute of Chemical Engineering,University of Science and Technology Liaoning,Anshan 114051,China;Key Laboratory of Chemical Metallurgy Liaoning Province,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]辽宁科技大学化工学院,辽宁鞍山114051 [2]辽宁科技大学辽宁省化学冶金重点实验室,辽宁鞍山114051

出　　处：《应用化工》2020年第10期2437-2441,共5页Applied Chemical Industry

基　　金：国家自然科学基金(U1361126);辽宁省自然科学基金(20180551218);辽宁省教育厅青年基金(2017LNQN04);辽宁科技大学优秀人才培养项目(2018RC07);辽宁科技大学青年基金(2017QN06)。

摘　　要：以净化缩聚沥青(中间相碳微球生产中的母液沥青)为原料,通过空气氧化法制备高软化点包覆沥青。通过单因素法,考察了空气流量、反应温度、反应时间对包覆沥青的基本性质(工业分析指标和光学显微结构)的影响。结果表明,当反应温度为300℃,空气流量160 L/h,反应时间为6 h,可制备出软化点(SP)为215℃,甲苯不溶物(TI)为56.00%,喹啉不溶物(QI)为8.41%,结焦值(CV)为75.83%,收率为68.56%,且在偏光显微镜下为光学各向同性的高品质包覆沥青。并利用元素分析、傅里叶转换红外光谱(FTIR)结合分峰拟合技术、热重分析仪(TGA)对高软化点包覆沥青的热稳定性进行研究。High softening point coating pitch has been prepared by the air oxidation method,and the refined polycondensation pitch(the mother liquor pitch from the production process of MCMBs)as the raw material.The affects of air flow,reaction temperature,and holding time on the basic properties(proximate analysis parameters and optical micro-structure)of coating pitch have been studied in detail.The results shown that the coating pitch with the SP of 215℃,TI of 56.00%,QI of 8.41%,CV of 75.83%,the yield of 68.56%has been obtained according to the reaction temperature of 300℃,air flow of 160 L/h,and reaction time of 6 h.In addition,the optical micro-structure of obtained coating pitch was isotropic structure.What’s more,the thermal stability of high softening point coating pitch has been determined by the ultimate analysis,fourier transform infrared spectrum(FTIR)combined with curve-fitted method,and thermogravimetric analyzer(TGA).

关 键 词：净化缩聚沥青 包覆沥青 热稳定性 

分 类 号：TQ522.63[化学工程—煤化学工程]