一种新型妥尔油沥青乳化剂合成方法的研究及表征

Synthesis and Characterization of A Novel Tall Oil Asphalt Emulsifier

采用妥尔油、多乙烯多胺、环氧氯丙烷以及三甲胺为原料,使用元催化剂合成方法制备出四种新型季铵盐类阳离子型沥青扎化剂,并利用红外手段对其结构进行表征。其中,三乙烯四胺型阳离子乳化剂水溶液临界胶柬浓度下表面张力达到34.2×10^(-3)N/m。乳化性能实验结果表明:增加亲水基的数目与乳化剂的掺量可以提高乳化剂的乳化性能。除二乙烯三胺型阳离子乳化剂沥青乳液储存稳定性不能满足规范要求外,其余三种新合成乳化剂均能很好的乳化汤青且满足相关技术要求。

Series of new cationic asphalt emulsifiers were synthesized by using Tall oil, polyethylene polyamine, epichlorohydrin and trimethylamine with catalyst free in ethanol and the molecular structures of target product were characterized by IR. The interfacial tension of aqueous solution of triethylene tetramine cationic asphalt emulsifier could reach to 34.2 × 10 -3 N/m. The results showed that with increasing of hydrophilic groups and the content of emulsifier, the emulsifying capacity of asphalt emulsifier could be enhanced obviously. The other asphalt emulsifiers could make a good emulsifying effect on the asphalt except the storage stability of asphalt emulsion prepared by diethylenetriamine asphalt emulsifier couldn＇ t meet the technical criterion.