摘要
选取N,N-二甲基甲酰胺为主改性剂,通过调节改性剂的种类和浓度,使柴油车用尿素溶液具有超低的凝固点.还原剂组分和质量百分数分别为:40%~70%的高纯水,20%~35%的尿素,5%~20%的N,N-二甲基甲酰胺,2%~35%的小分子醇类,产品冰点低于-15℃^-35℃,表面张力明显小于普通尿素还原剂,电导率和相对粘度适中.
Using N, N - dimethylformamide as the main modifier, the urea solution in diesel vehicle is made with ultra - low freezing point by adjusting the types and concentration of the modifier. The components and mass percentage quality of the reducer are respectively： 40% - 70% of the high pure water, 20% - 35% of urea, 5% -20% of N, N - dimethylformamide, and 2% -35% of the small molecule alcohols. The urea solutions with above composition have solidifying point below - 15℃- - 35℃, and surface tension smaller than the ordinary urea reductants. Their conductivity and relative viscosity are moderate.
作者
武小满
王唯一
邢莉珺
史若男
WU Xiaoman;WANG Weiyi;XING Lijun;SHI Ruonan(School of Chemistry and Chemical Engineering,Xuchang University,Xuchang 461000,China)
出处
《许昌学院学报》
CAS
2018年第8期34-37,共4页
Journal of Xuchang University
基金
河南省高等学校重点科研项目(16A150063)
关键词
柴油车尾气
车用尿素
改性剂
低凝固点
diesel exhaust
vehicle urea
modifier
low solidifying point
