brightness reversion,yellowing

The causes of yellowing in the medium layer of paper board were analysed by the comparison of several paperboard samples from different mills.

通过对不同生产厂家几种纸板的对比实验,分析得到了纸板芯层端面返黄的产生根源,发现纸板芯层中BCTMP浆的存在会导致纸板芯层的返黄问题,提出了相关的解决方法。

The yellowing of deinked pulps from mixed office wastepaper(MOW) bleached with H 2O 2(P) and H 2O 2_Na 2S 2O 4(PY) respectively is studied with natural aging and oven aging in this paper.

本文采用人工老化和自然老化对混合办公废纸脱墨浆H2 O2 (P)与H2 O2 -Na2 S2 O4(PY)漂后返黄进行了研究。

Among them,LIP 14,a LIP negative mutant of Phanerochaete chrysosporium which was mutated in our own lab,was the best to suppress yellowing (depression rate 27.

用各种木材腐朽真菌及粗酶液处理化机浆 ,检测其对提高纸浆白度和抑制纸浆热返黄的作用。

Studies on mechanism of brightness reversion and controlling is also introduced.

对CTMP制浆过程中的汽蒸、挤压、化学药品浸渍、返黄及控制机理及在国外的实验研究进行了介绍 ,对CTMP原料使用、浆料应用、废水处理的情况也进行了简要的阐述 ,比较了CTMP和KP、TMP的浆料性

The dosage of whitening agent in coating color and an investigation to color reversion of ivory board;

增白剂在涂料制备中的用量及对白卡纸返黄的研究