摘要： 采用微射流法用Gemini双阳离子分散剂制备双阳离子化改性涂料。在Gemini双阳离子分散剂用量为1%，涂料用量为5%，微射流分散时间为30min，微射流分散压力为1.7×10⁵kPa条件下制备的双阳离子化改性涂料的粒径为21.9nm，Zeta电位为32.4mV，黏度为1.3mPa·s。结果表明，双阳离子化改性涂料具有较好的贮存稳定性和酸碱稳定性，用于染色后织物的K/S值较常规未改性涂料提高了16.2%，各项牢度可以提高半级以上。

关键词: 改性涂料 , 粒径 , Zeta电位 , 稳定性 , 染色深度 , 牢度

Abstract: The title double-cationic modified coatings was prepared with Gemini double -cationic dis-persant by microfluidiser comminution method. The particle size of the modified coatings was 211.9 nm. The Zeta potential 32. 4 mv and the viscosity 1. 33 x 10^-3 Pa.s,when using double-cationic dispersant 1% and 1.7 x 10⁵ kPa.s for 30 min. The data indicated that the storage stabil-ity and acid and alkali stability of the modified coatings were improved. Modified pigment were better than the common pigment. The K/S value of the fabric dyed with this coatings was increased by 16. 2%, and all the fastness values were improved by more than half grade.

Key words: modified coatings, particle size, Zeta potential, stability, color strength, fastness