矿物纤维的改性及其在不同浆料中的应用

Surface Modification of Mineral Fiber and Its Application in Different Pulp

对矿物纤维不同的改性方法及其在不同浆料中的应用进行了研究。结果显示,对于漂白麦草浆,用CPAM改性矿物纤维效果优于CS,其最佳添加量11%,相对于未添加矿物纤维,其抗张指数、撕裂指数、耐折度、耐破指数分别下降8.8%、11.5%、25.0%、11.9%,透气度提高了281.4%;对于漂白阔叶木浆,同样CPAM改性优于CS,其最佳添加量可达14%,相对于未添加矿物纤维,其抗张指数、撕裂指数、耐折度、耐破指数分别下降了10.8%、14.1%、32.6%、19.0%,透气度提高了328.2%。添加矿物纤维的效果明显优于滑石粉填料,表明矿物纤维除了起填料作用外还有纤维效应。最后通过不同pH值下的ζ电位分析矿物纤维的改性结果。

＂1he modification of mineral fiber in different ways and its application in different pulp were studied. The results showed that the better method of surface modification is modified by CPAM. The proper dosage of CPAM in the wheat straw pulp is 11.0%, brea!tng index, tear index, folding strength, burst index decrease by 8.8%, 11.5%, 25.0%, 11.9% respectively, porosity increase by 281.4% compared with unmodified mineral fiber. The proper dosage of CPAM in the BKP pulp of hardwood is 14.0%, and the breaking index, tear index, folding strength, burst index decrease by 10.8%, 14.1%, 32.6%, 19.0% respectively, porosity increase by 328.2% compared with unmodified mineral fiber. Under same dosage of filler, the paper performance of adding mineral fiber are better than those of adding talc. qhe Zeta potential of modified mineral fiber in different pH is detemined.