水性环氧乳液的制备与MS-2型微表处性能  

Preparation of Waterborne Epoxy Emulsion and Properties of MS-2 Micro-surfacing

作　　者：李悦[1] 赵晨轶 吴玉生 黄舟 LI Yue;ZHAO Chenyi;WU Yusheng;HUANG Zhou(Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing 100124,China;China Building Materials Test and Certification Group Xiamen Hongye Co.,Ltd.,Xiamen 361026,China;Xiamen Key Laboratory of Performance Testing and Diagnosis of Building Engineering,Xiamen 361026,China)

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124 [2]中国建材检验认证集团厦门宏业有限公司,厦门361026 [3]厦门市建筑工程性能检测与诊治重点实验室,厦门361026

出　　处：《北京工业大学学报》2023年第8期874-883,共10页Journal of Beijing University of Technology

基　　金：北京市自然科学基金资助项目(8202005);北京市百千万人才工程资助项目(2018A37)。

摘　　要：以环氧树脂E51和聚乙二醇(polyethyleneglycol,PEG)为原料,通过相反转法制备水性环氧乳液,通过探究PEG相对分子质量和乳化剂用量对乳液的黏度、粒径以及稳定性的影响,筛选出综合性能最佳的水性环氧乳液,并分析该乳液固化后水性环氧树脂(waterborne epoxy resin,WER)的热稳定性、微观结构。使用荧光显微镜探究水性环氧树脂与乳化沥青的相容性,并得出最佳的水性环氧树脂质量掺量。在此基础上制备MS-2型水性环氧树脂改性乳化沥青微表处,考察不同水性环氧树脂改性乳化沥青制备方法、不同固化剂种类对微表处混合料施工性能和路用性能的影响,并分析自制乳液和市售乳液的性价比及对应微表处性能的性价比。结果表明,当PEG相对分子质量为6 000、乳化剂质量掺量为20%时得到的水性环氧乳液综合性能最佳,对应的水性环氧树脂具备优异的热稳定性和良好的微观结构。水性环氧树脂质量掺量为6%时得到的水性环氧树脂改性乳化沥青相容性最好。最佳的水性环氧树脂改性乳化沥青制备方法是水性环氧乳液与乳化沥青混合后再加入水性环氧固化剂;相较于基础胺类固化剂,水性环氧固化剂制备的微表处具有更加优异的综合性能。自制水性环氧乳液性价比高于市售乳液,具备较好的应用价值。Using epoxy resin E51 and polyethylene glycol(PEG) as raw materials,waterborne epoxy emulsion was prepared by phase inversion method.By exploring the effects of PEG molecular weight and emulsifier dosage on the viscosity,particle size and stability of the emulsion,the waterborne epoxy emulsion with the best comprehensive performance was selected,and the thermal stability and micro-surfacing of the cured waterborne epoxy resin were analyzed.The compatibility between waterborne epoxy resin and emulsified asphalt was investigated by fluorescence microscope,and the optimum content of waterborne epoxy resin was obtained.On the basis of this,MS-2 waterborne epoxy resin modified emulsified asphalt micro-surfacing was prepared.The influences of different preparation methods and different curing agents on the construction performance and road performance of micro-surfacing mixture were investigated,and the cost performance of self-made emulsion and commercial emulsion and the corresponding micro-surfacing performance were analyzed.Results show that when the molecular weight of PEG is 6 000 and the content of emulsifier is 20%,the waterborne epoxy emulsion has the best comprehensive performance,and the corresponding waterborne epoxy cured product has excellent thermal stability and good micro-surfacing.6% waterborne epoxy resin has the best compatibility with emulsified asphalt.The best preparation method of waterborne epoxy resin modified emulsified asphalt is to mix waterborne epoxy emulsion with emulsified asphalt and then add waterborne epoxy curing agent.Compared with the basic amine curing agent,the micro-surfacing prepared by waterborne epoxy curing agent has excellent comprehensive properties.Self-made waterborne epoxy emulsion has higher cost performance than that of commercial emulsion,and has good application value.

关 键 词：道路工程 水性环氧乳液 改性乳化沥青 MS-2型微表处 施工及路用性能 性价比分析 

分 类 号：U414[交通运输工程—道路与铁道工程]