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橡胶粉改性沥青反应过程规律
刘延军,刘朝辉,张玉贞
0
(中国石油大学化学工程学院,山东青岛 266580;中海石油炼化有限责任公司,北京 100029;江苏省交通工程建设局,江苏南京 210013)
摘要:
对3种不同基质沥青原料,分别测定不同反应温度下橡胶粉-沥青体系的黏温曲线,并对特征样品进行红外光谱分析;通过分析橡胶粉改性沥青黏温曲线随反应条件的变化,以及反应过程中官能团的改变,探讨橡胶粉与沥青体系反应规律和作用机制。结果表明:橡胶粉改性沥青反应过程与沥青介质、反应温度和反应时间紧密相关;反应温度越高,溶胀和降解的速度越快;沥青针入度越高,橡胶粉改性沥青黏度变化越大;反应过程并没有生成新的官能团,产品黏度变化主要是受橡胶粉的溶胀和降解过程影响;在实际生产中,橡胶粉改性沥青黏温性能可以通过反应温度和反应时间进行控制。
关键词:  橡胶粉  改性沥青  黏温曲线  光谱分析
DOI:10.3969/j.issn.1673-5005.2017.03.019
投稿时间:2016-12-20
基金项目:山东省自然科学基金项目(ZR2014EEQ005)
Reaction rules of crumb rubber modified asphalt
LIU Yanjun,LIU Chaohui,ZHANG Yuzhen
(College of Chemical Engineering in China University of Petroleum, Qingdao 266580, China;CNOOC Oil & Petrochemicals Company Limited, Beijing 100029, China;Jiangsu Provincial Transportation Engineering Construction Bureau, Nanjing 210013, China)
Abstract:
Three kinds of asphalt with different penetrations were selected in this study. The viscosity-temperature curves were measured for the asphalt-rubber system, and the infrared spectrum analysis was used to characterize the asphalt samples. The reaction process and mechanism of asphalt-rubber system was investigated through the variation of the viscosity-temperature curves and changes of the functional group in different reaction conditions. The results show that the reaction of crumb rubber modified asphalt is closely related to the type of asphalt, reaction time and temperature. When the temperature is higher, the reaction rate of swelling and degradation process will be improved. And when the penetration is higher, the viscosity change of crumb rubber modified asphalt will be larger. The spectroscopic analysis displays that no new functional groups have been produced in this reaction process, and the change of its viscosity is closely related to the swelling and degradation process. In practice, the viscosity-temperature property of crumb rubber modified asphalt can be controlled by the reaction temperature and reaction time.
Key words:  crumb rubber  modified asphalt  viscosity-temperature curve  spectroscopic analysis