【作者】 朱洪敏；

【导师】 房宽峻；

【作者基本信息】 青岛大学 ， 纺织化学与染整工程， 2004， 硕士

【摘要】 喷墨印花是一种新兴的纺织品加工技术，是未来印染业发展的方向。这一技术的关键在于墨水的研制，对于颜料型墨水来说，超细颜料的超细化和分散稳定是至关重要的因素。 本论文主要讨论了新型阳离子高分子分散剂SMD的合成，通过改变三种单体的配比、引发剂用量等反应条件，详细研究了该高分子分散剂在超细颜料水性分散体系中的应用。通过对SMD的红外光谱等分析，证实了所得共聚物SMD是单体S、M、D的三元共聚物；凝胶渗透色谱表明，SMD中主要产物的数均分子量为5943，分子量分布系数为1.32；滴定法测定SMD中亲水单体的质量百分比为71.83％。 通过改变三种单体的配比、引发剂用量等反应条件，研究了该高分子分散剂在超细有机颜料水性体系中的作用。结果表明，随着共聚物中亲水单体的增加，所得到的高分子分散剂SMD的分散性能呈现先增大后减小的趋势，随着引发剂含量的增加，分散稳定性也呈现同样的趋势。 用SMD做分散剂时，随着粉碎次数的增加超细颜料分散体系的稳定性呈现先增加后减少的趋势，在粉碎次数为15次时，比吸光度出现极大值，体系的粘度和颜料粒径逐渐减少；随着SMD用量的增加体系的稳定性呈先增加后减少的趋势，用量为颜料量的四分之一时达到极大值，体系的粘度和颜料粒径逐渐减少；随着二甘醇用量的增加体系分散稳定性逐渐增加；体系的粘度和颜料粒径逐渐减少。 SEM分析表明SMD与普通分散剂相比用于有机颜料在水中的超细化加工，分散后体系的Zeta电位较高，具有较好的分散效果。更多还原

【Abstract】 Ink jet printing, a kind of burgeoning textile processing technique, presents the development direction of printing and dyeing industry. The key point of ink jet printing is preparation of ink. As for pigment ink, the preparation of ultra-fine partical and its dispersability are the most important factors in determining the properties of ink.In this paper, a water-soluable quaternized polymeric dispersant was synthesized; and by varying the ratio of monomers and the amount of initiator, the effect of polymeric dispersant’s structure on dispersability was systematically explored; also, the application conditions of polymeric dispersant in ultra-fine pigment aqueous system were investigated in details. By FT-IR and 13C NMR spectrum, the structure of SMD was confirmed to be a trimonomer ; Gel Penetration Chromometer indicates that the weight molecular of SMD is 5943, and the molecular weight distribution is 1.32; The weight percentage of hydrophilic monomer is about 71.83% as measured by Titration Method.The result shows that as the percentage of hydrophilic monomer increases, the dispersability of SMD shows the trend of going first up and then down. So does the effect of initiator. The Scanning Electron Microscope pictures show that SMD exhibits better dispersability to low-polar organic pigment.更多还原