为研究水性环氧乳化沥青乳液絮凝团聚、分层乃至提前破乳等相容性问题,将3种阳离子乳化沥青分别与环氧树脂乳液及阳离子、非离子固化剂复配,采用储存稳定度、离心稳定度测试对水性环氧乳化沥青稳定性进行评价,并利用荧光显微镜及红外光谱仪,观测固化材料的微观形貌及各官能团红外吸收峰,对不同种类水性环氧乳化沥青的颗粒微观分布及化学相容性进行评价。结果表明:水性环氧乳化沥青储存稳定性、离心稳定性不具有统一规律。3种水性环氧乳化沥青储存稳定性结果为BE-2>JY-R1W>BE-3X;离心稳定性结果为BE-3X>BE-2>JY-R1W;根据荧光显微及红外光谱分析结果,BE-2型乳化沥青与阳离子固化剂复配后体系基本无固化剂残余,固化反应迅速,可在短时间内充分形成三维交联网状结构。研究对水性环氧乳化沥青材料配伍优选具有一定参考价值。
In order to study the compatibility of lotion of waterborne epoxy(WBE) emulsified asphalt,such as the flocculation,agglomeration,delamination and even early demulsification,three kinds of cationic emulsified asphalt were compounded with epoxy lotion,cationic and non-ionic curing agents respectively.The stability of WEB emulsified asphalt was evaluated by storage stability and centrifugal stability tests.Fluorescence microscope and infrared spectrometer were used,and observed the micro morphology and infrared absorption peaks of various functional groups of the cured materials,The particle micro distribution and chemical compatibility of different kinds of the emulsified asphalt were evaluated.The results shown that the storage stability and centrifugal stability of the emulsified asphalt did not have unified law.The storage stability results of three kinds of the emulsified asphalt were BE-2>JY-R1W>BE-3X.The centrifugal stability results were BE-3X>BE-2>JY-R1W.According to the analysis results of fluorescence microscope and infrared spectrum,the system of BE-2 emulsified asphalt and cationic curing agent basically had no residual curing agent,the curing reaction was rapid,and the 3D crosslinking network structure can be fully formed in short time.The certain reference value was provided for the compatibility optimization of WBE emulsified asphalt materials.
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基金资助
国家重点研发计划项目(2021YFB2601000);国家自然科学基金(52178409);内蒙古自治区交通运输科技项目(NJ-2021-17)
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