聚合物改性剂和石油沥青相容性评价方法研究进展  

Research progress on compatibility evaluation methods of polymer modifiers and petroleum asphalts

作　　者：汪海年[1] 郑文华 尤占平 季节 李廉 陈玉[1] WANG Hai-nian;ZHENG Wen-hua;YOU Zhan-ping;JI Jie;LI Lian;CHEN Yu(School of Highway,Chang'an University,Xi'an 710064,Shaanxi,China;Department of Civil,Environmental,and Geospatial Engineering,Michigan Technological University,Houghton MI 49931,Michigan,USA;School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]长安大学公路学院,陕西西安710064 [2]密歇根理工大学土木、环境与地理空间工程系,密歇根霍顿MI 49931 [3]北京建筑大学土木与交通工程学院,北京100044

出　　处：《交通运输工程学报》2023年第1期8-26,共19页Journal of Traffic and Transportation Engineering

基　　金：国家重点研发计划(2021YFB2601000);国家自然科学基金项目(52078047,52078048)。

摘　　要：综述了6类聚合物改性剂和石油沥青的相容性评价方法,即定性观察法、流变学方法、热力学方法、化学分析法、形貌图法和数值模拟法,分析并比较了各种方法的优缺点与适用性,在此基础上针对聚合物改性剂和石油沥青的共混反应类型特点,建议了适宜的相容性评价方法,并展望了未来聚合物改性剂和石油沥青相容性评价的研究方向。研究结果表明:聚合物改性沥青属于黏弹性材料,基于流变学方法的相分离系数对于检测聚合物改性剂与石油沥青之间的差异较为敏感,适于评价两者之间的相容性;单一评价指标不宜准确评价聚合物改性剂和石油沥青的相容性,建议采用多种分析方法综合评价;对于物理共混的聚合物改性沥青,可以优先采用基于流变学的相分离系数结合形貌图法评价聚合物改性剂和石油沥青的相容性;对于反应型聚合物改性剂和石油沥青的相容性评价,建议采用相分离系数和红外光谱法;基于热力学的分子动力学模拟方法可以通过设置适宜的聚合物模型、作用温度等参数从微观角度进一步模拟和阐释聚合物改性剂和石油沥青的相互作用机理;未来结合聚合物改性沥青实际储存条件建立Cigar Tube试验储存时间区间范围,在此基础上通过适宜的相容性评价方法,动态连续地评价聚合物改性剂和石油沥青的相容性。Six kinds of compatibility evaluation methods of polymer modifiers and petroleum asphalts were summarized including qualitative observation method,rheological method,thermodynamic method,chemical analysis method,topography method,and numerical simulation method.The advantages,disadvantages and applicability of different evaluation methods were analyzed and compared.Furthermore,suitable compatibility evaluation methods were recommended based on the blending reaction characteristics of polymer modifiers and petroleum asphalts,and it also looked forward to the future research direction of compatibility evaluation of polymer modifiers with petroleum asphalts.Research results show that polymer modified asphalt is a viscoelastic material.The phase separation coefficient based on rheological method is more sensitive to detect the difference between petroleum asphalts and polymer modifiers,and is suitable for evaluating their compatibility.A single evaluation index cannot accurately evaluate the compatibility of polymer modifiers and petroleum asphalts,and it is recommended to use multiple analysis methods for comprehensive evaluation.For physically blended polymer modified asphalts,the rheology based phase separation coefficient combined with the topography method can be used to evaluate the compatibility of polymer modified asphalts.For the compatibility evaluation of reactive polymer modifiers and petroleum asphalts,the phase separation coefficient and infrared spectroscopy are recommended.The molecular dynamics simulation method based on thermodynamics can further simulate and explain the interaction mechanism between polymer modifiers and petroleum asphalts from a microscopic perspective by setting appropriate polymer models,interaction temperatures,and other parameters.In the future,the storage time range of cigar tube test can be established according to actual storage conditions of polymer modified asphalts,and on this basis,the appropriate compatibility evaluation methods can be used to dynamically and continuou

关 键 词：路面工程 聚合物改性剂 石油沥青 相容性 评价方法 综述 

分 类 号：U414[交通运输工程—道路与铁道工程]