摘要
分散性是决定颜料性能的一个关键性指标,不仅决定初始颜料颗粒的润湿性,还决定了油墨的着色强度。本研究利用化学接枝反应制备了一种可用于油墨的自分散颜料颗粒,通过在颜料表面引入亲水性基团来稳定颜料,并研究了不同反应温度、反应时间和对氨基苯甲酸质量分数对颜料颗粒尺寸和Zeta电位的影响,确立了最佳反应工艺。实验结果表明,反应温度为25℃,反应时间为1.5h,对氨基苯甲酸质量分数为15%时制备的改性颜料粒子性能最好,改性颗粒平均粒径约为85nm,Zeta电位约为-34mV。改性后的颜料自分散性优异,制备油墨时不需要添加任何分散剂也能稳定存在。
Dispersion is a key index to determine the performance of pigments,which not only determines the wettability of the initial pigment particles,but also determines the coloring intensity of ink.In this study,a self-dispersed pigment particle which can be used for ink was prepared by chemical grafting reaction.Hydrophilic groups have been introduced into the surface of the pigment to stabilize the pigment,and the effects of the reaction temperature,reaction time and p-aminobenzoic acid mass fraction on the particle size and Zeta potential of the pigment were studied and the optimal reaction procedure was determined.The results showed that the prepared modified pigment particles had the best performance,when the reaction temperature was 25℃,the reaction time was 1.5h,and the p-aminobenzoic acid mass fraction was 15%.The average particle size of the modified particles was about 85nm,and the Zeta potential was about-34mV.The modified pigment has excellent self-dispersion,and can be stable without adding any dispersant in the preparation of ink.
作者
孟丽平
曾振华
MENG Li-ping;ZENG Zhen-hua(Henan Science and Technology Vocation University,Zhoukou 466000,China;Nanjing University of Science&Technology,Nanjing 210094,China)
出处
《印刷与数字媒体技术研究》
CAS
北大核心
2023年第2期117-122,共6页
Printing and Digital Media Technology Study
基金
2021年度河南省教育科学“十四五”规划一般课题项目(No.2021YB0763)。
关键词
颜料
自分散
化学改性
稳定性
Pigment
Self-dispersed
Chemistry modification
Stability
