氧化铁黄水性色浆的黏度影响因素分析  

Analysis of Influence on Viscosity of Iron Oxide Yellow Waterborne Colorant

作　　者：陈瑜 沈斌立 Chen Yu;Shen Binli(LANXESS(Ningbo)Pigments Co,.Ltd,.Ningbo,Zhejiang 315204,China)

机构地区：[1]朗盛(宁波)颜料有限公司,浙江宁波315204

出　　处：《涂料工业》2022年第10期4-7,13,共5页Paint & Coatings Industry

摘　　要：重点考察了氧化铁黄色相、研磨工艺、pH等对水性色浆黏度的影响。结果表明:色相差异显著且偏暗偏红的氧化铁黄色浆较偏亮偏绿的黏度更低,主要是因为偏暗偏红的氧化铁黄比表面积更小,更有利于颜料的分散和分散剂的润湿、包覆。同一个氧化铁黄样品经历不同程度的研磨作用,数据显示当受到的研磨作用强度逐渐增强,其色浆黏度逐渐降低,原因主要是因为研磨作用打断了针状结构,变短的针状的流动阻力降低。此外颜料的pH也会影响整个体系的黏度,低pH的氧化铁黄会展现出其色浆高黏度的特点。从颜料的角度分析氧化铁黄对水性色浆黏度的影响,打破优先考虑助剂的常规思维限制,为优化配方设计和解决生产问题提供了新的思路。In order to explore the effect of iron oxide yellow on the viscosity of waterborne colorant,the effects of iron oxide yellow color shade,grinding process and pH on the viscosity were investigated.The results showed that the colorant with darker and more reddish iron oxide yellow had a lower viscosity than brighter and more greenish,mainly because the darker and more reddish iron oxide yellow had a smaller specific surface area,which was easier to be dispersed and wetted and coated by dispering additives.When one iron oxide yellow was subjected to various milling power,the data showed that the milling power was gradually enhanced and its viscosity was gradually reduced,mainly because the milling effect broke the needle−like structure and the flow resistance of the shortened needle−like structure was reduced.In addition,the pH of the pigment would also influence the viscosity of the whole system,iron oxide yellow with low pH will show the characteristics of high viscosity.The influence on viscosity of waterborne colorant were analyzed from the perspective of pigment,which broke the restriction of conventional thinking of giving priority to additives,and provided a new way of thinking for optimizing formula design and solving production problems.

关 键 词：氧化铁黄 黏度 水性色浆 颜料 

分 类 号：TQ622.15[化学工程—精细化工]