硫酸钙晶须及有机改性的初步研究  

Characterization of Calcium Sulphate Filler and Its Organic Modification by Stearic Acid

作　　者：刘菲菲[1] 王玉珑[1,2] 詹怀宇[2] 覃盛涛[1] 刘艳新[1] 

机构地区：[1]长沙理工大学化学与生物工程学院,湖南长沙410114 [2]华南理工大学制浆造纸国家重点实验室,广东广州510640

出　　处：《纸和造纸》2012年第11期58-60,共3页Paper and Paper Making

基　　金：湖南省教育厅优秀青年基金项目(No.11B006);2011年中国博士后基金资助(2011658)

摘　　要：对从磷肥生产新工艺中提取的硫酸钙晶须的形态结构、填料的基本性能进行了分析，并对硫酸钙晶须硬脂酸有机改性进行了初步研究。结果表明，酸解磷矿生产磷肥过程中制备的硫酸钙晶须主要呈片状结构，晶须长度5-100μm，宽度5～10μm，长宽比5：1-20：1；用作造纸填料，硫酸钙晶须具有高白度、低磨耗的优点，但溶解度较高；硬脂酸改性硫酸钙晶须的效果较好，硬脂酸可以与硫酸钙晶须形成化学吸附，从而有效降低硫酸钙晶须溶解性。Calcium sulphate made from novel process of phosphate fertilizer producing was characterized, including surface topography and basic properties for papermaking filler, and its organic modification by stearic acid was studied too. The results showed that this calcium sulphate is characterized by platelike structure, length of5-100μm, width of 5-10 μm, ratio of length to width, 5：1-20：1; used as papermaking filler, calcium sulphate shows high brightness, low abrasion and slightly higher solubility; organic modification by stearic acid can estabilish chemical adsorption with calcium and lower its solubility;, beneficial to utilization in papermaking.

关 键 词：硫酸钙晶须 造纸填料 有机改性 溶解性 

分 类 号：TS727.6[轻工技术与工程—制浆造纸工程]