浅谈纸中填料的鉴别及测定方法

A brief discussion on the identification and determination of paper fillers

造纸行业所用填料是加入纸浆里基本不溶于水的微粒。添加的目的是可以改善纸张的不透明度、亮度、平滑度、印刷适应性等性能。加入填料不仅可以减少纤维的使用量,并且加入填料的纸浆容易脱水、易干燥,可减少能源消耗,降低造纸成本。我国用于造纸的填料种类主要有滑石粉、高岭土(瓷土)、碳酸钙(PCC/GCC)、二氧化钛(钛白粉)等。对于不同用途的纸张需要根据使用功能的差异选择合适的填料,设计不同的添加量。因此对纸中加入的填料进行鉴别,测定出填料含量对纸张性能分析和工艺设计都有着重要意义。

The fillers used in paper process are basically waterinsoluble particles when added in the pulp.Adding fillers in paper mainly aims to improve the paper opacity,brightness,smoothness,printing adaptability and other performances.It can not only reduce fiber consumption,but also make the slurry easy to dehydrate,thus reducing both energy consumption and total cost.In detail,the fillers used mainly include the talcum powder,kaolin(China clay),calcium carbonate(PCC/GCC),titanium dioxide and so on in China paper industry.Different fillers should be used for different species of paper according to their specific purposes.Therefore,it has a great significance to identify and determine the content of fillers in paper during paper performance analysis and process design.