阳离子型助剂的合成及其在造纸中的应用

Synthesis and Application of Cationic Retention and Filter Aids

以Ｎ，Ｎ─二甲基氨乙基甲基丙烯酸酯和丙烯酰胺为原料共聚得到新的阳离子型助剂。在实验室条件下，通过对苇浆、桦木浆、落叶松浆的滤水实验，得出添加该助剂，各种浆料的滤水效果都得到改善，滤液体积提高最大百分率分别为１１５％、９９３％、７３９％。通过以红白松本色浆、苇浆、混合浆为原料在实验室条件下，对手抄片的网上留着率进行测定，添加该助剂测出网上留着率和各自浆种的空白时留着率相比，留着率增加最高百分率分别为４９５％、３１９％、３１６％，且手抄片的物理强度无明显变化。通过佳木斯造纸厂５号纸机生产实验，验证了该助剂在生产中的效果：可加快浆料的滤水速度，使网前箱浆料浓度下降１５％，纸机车速提高５％，纸张利润增加１００元／ｔ。

A new cationic aid by polymerization of dimethylaminol ethyl methacrylate and acrylamide was studied under laboratory situation in filter experiments of reeds, birch and larch pulps The conclusions show that the efficiencies of filter for all kinds of pulps are improved by adding the aid The maximum increasing percents of volume for filter liquid are 115%, 99 3% and 73 9% respectively Using unbleached Korean pine and white pine pulp, reeds pulp and mix pulp to do the blank test, the retentions of hand laboratory paper on net were determined The maximum retention efficiencies increase by 4 95%, 3 19% and 3 16% respectively, and their physical strengths have no distinct change by adding the aid It proved that the aid can quicken the filter velocity of pulp and reduce the pulp concentration by 15% in flow box in production Meanwhile it can raise paper machine speed by 5% and per ton profit by 100 $