几种造纸常用填料对过氧化氢稳定性的影响  

Influence of Fillers on Stabilization of Hydrogen Peroxide

作　　者：邱玉桂[1] 张树滨[1] 徐德[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广州510641

出　　处：《中国造纸学报》2004年第1期27-32,共6页Transactions of China Pulp and Paper

基　　金：国家自然科学基金(29876012);广东省自然科学基金(020935;980596)

摘　　要：利用原子吸收光谱对轻质碳酸钙、高岭土、滑石粉、二氧化钛等常用造纸填料的元素组成进行分析,测定不同浓度填料悬浮液的ζ电位,研究填料对H_2O_2稳定性的影响。结果表明,填料悬浮液的ζ电位均为负值,并且随着填料加入量的增加,ζ电位的绝对值增加,至一定量时,ζ电位的绝对值略有下降。不同填料对H_2O_2的催化分解及HO·自由基的产生量的影响明显不同。适当的填料量对改善H_2O_2稳定性有益。The element composition of precipitated calcium carbonate, kaolin, talcum powder and titanium dioxide was analyzed by means of atomic-absorption spectrometer. The zeta potential of their slurry with various solid content was measured. The influence of fillers on the decomposition of alkaline hydrogen peroxide was studied in the absence of pulp. The results showed that the negative zeta potential of filler slurry would be raised as the increase of filler content. The fillers have a great influence on stabilization of hydrogen peroxide. Different filler will affect the hydrogen peroxide bleaching of the secondary fibers greatly. Appropriate amount of filler will be beneficial to the stabi- lization of hydrogen peroxide.

关 键 词：造纸填料 过氧化氢 稳定性 轻质碳酸钙 高岭土 滑石粉 二氧化钛 Ζ电位 

分 类 号：TS727.6[轻工技术与工程—制浆造纸工程]