阳离子、两性壬基酚系列沥青乳化剂的合成与性能表征∗

摘要

对壬基酚(NP)与二乙胺反应制备了阳离子和两性沥青乳化剂。通过红外光谱,溴酚蓝实验验证了产物的结构；合成的沥青乳化剂在沥青含量,粘度,稳定性,乳化效果,拌合稳定度,筛上残留物与粗集料的裹符性都达到国家标准,结果表明其中3种沥青乳化剂的乳化效果较好,其中1种为中裂型沥青乳化剂,2种为慢裂型沥青乳化剂。%Nonylphenol (NP for short)and diethylamine were used as raw materials to synthesize one cationic and three amphoteric asphalt emulsifiers.The structure of emulsifiers was investigated by FT-IR and bromo-phenol blue experiment.Active principle in reaction products was determined by chemical titration.Emulsifiers synthesized in the paper were used for preparing emulsified asphalt.The performance including emulsifying ef-fectiveness,storage stability,mixing stability,normal viscosity,asphalt content,residues on screening and the property of wrapping coarse aggregate was tested.The results demonstrated that the three emulsifiers have good properties.One of them can be used as a moderate-setting asphalt emulsifier;others can be used as slow-setting asphalt emulsifiers.