钛白粉抑制纸浆返黄力效果研究

Study on the effect of TiO_2 on the inhibition of high yield pulp yellowing

本文通过在常规涂料中添加钛白粉,对手抄片以不同类型,以及不同含量纸浆配比进行涂布,经紫外加速老化后,测定了各样涂布纸老化前后抗老化性能的变化。实验结果显示,纳米金红石型TiO_2具有更好的屏蔽紫外线能力,另普通TiO_2同样能达到较好的抗老化性能,而且在成本方面优于纳米TiO_2。随着普通TiO_2用量的增加,涂布纸白度稳定性提高。

In this paper,by adding titanium dioxide in the conventional coating,paver with different types,and different content of pulp ratio is coated by UV accelerated aging,changes of coated paper before and after aging anti-aging properties were determined.The ex原perimental results show that the nano rutile TiO2 has better UV shielding ability,and the other ordinary TiO2 can also achieve better aging resistance,and the cost is better than nano TiO2.With the increase of the content of TiO2,the stability of coated paper whiteness is im原proved.