水性环氧树脂改性乳化沥青黏度及其影响因素研究

Study on viscosity and influencing factor of waterborne epoxy resin modified emulsified asphalt

为了研究水性环氧改性乳化沥青(WERMEA)的黏度以及温度、时间、水性环氧树脂(WER)与固化剂的比例和WER掺量等因素对其黏度的影响,改变5种不同WER掺量和3种不同WER与固化剂比例制备WERMEA。通过荧光显微镜、动态流变剪切仪、恩格拉黏度计进行黏度试验研究,通过自制拉拔头进行力学性能试验研究。结果表明:WER在改性乳化沥青(MEA)中分散均匀且将沥青包裹,掺量为20%时在荧光显微图中表现出更好的融合状态;黏度最佳时,该自制WERMEA中WER与固化剂最佳质量比为1∶1,水性环氧体系掺量为WERMEA体系的20%,且最佳养护温度为40℃,最佳养护时间为16h,其中WER掺量和固化时间对其黏度影响最为明显。

In order to study the viscosity of waterborne epoxy resin modified emulsified asphalt(WERMEA)and the influence of temperature,time,the ratio of waterborne epoxy resin and curing agent and resin content on its viscosity,WERMEA was prepared by used 5 different WER content and 3 different WER and curing agent ratios.The experimental research was carried out by fluorescence microscope,dynamic shear rheometer,engler-type viscometer and self-made drawing instrument.The results showed that:when the viscosity was the best,the best mass ratio of WER to curing agent in this self-made WERMEA was 1∶1.The WER content was 20wt% of the total mass of the WERMEA.The best curing temperature was 40℃,and the best curing time was 16h.Among them,WER content and curing time had the most obvious effect on its viscosity.