【摘要】 采用IR验证非离子型自乳化水性环氧固化剂的结构,并表征其物理性质。通过TEM观察固化前与固化后乳液颗粒的形貌来阐述非离子型水性环氧涂料的固化机理,并探讨脂肪胺的种类、胺氢与环氧比及固化温度对涂料性能的影响。结果表明,这种非离子型水性环氧固化剂的固化过程受到水分的挥发速度,颗粒的聚集程度,乳液颗粒的大小、形貌,以及固化剂的扩散速度和固化速度的影响。并认为最佳脂肪胺是TETA,胺氢与环氧摩尔比为0.8∶1～1.2∶1,含水量为30%～40%,固化温度在30℃～50℃。更多还原

【Abstract】 The structure of the nonionic self-emulsifying waterborne epoxy curing agent was confirmed by infrared spectrum (IR),and most of the physical properties were also characterized. The curing process of waterborne epoxy resin was illustrated by observing the transmission electron microscope (TEM) of latex particles. And the influence of aliphatic amines,the mole ratio of amine and epoxy group,water content,and curing temperature on the properties of coating was investigated respectively. Results show that the best aliphatic amine is triethylenetetramine(TETA),the optimum performance of the waterborne epoxy coating is obtained when the mole ratio of the hydrogen and the epoxy is 0.8:1～1.2:1,the water content is 30%～40%,and the curing temperature is 30 ℃～50 ℃.更多还原