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为了提高蛋白质接枝共聚物(DJG)的湿纸力增强效果,对其进行阳离子改性。考察了改性剂用量、改性时间、共聚物中蛋白质与单体的质量以及环氧氯丙烷含量共聚物等中对阳离子蛋白质接枝共聚物(YDJG)纸力增强效果的影响。结果表明改性剂用量对YDJG的作用效果影响大。在改性剂用量为30%时,YDJG的湿强度增加率为12.8%,干强度增加率为10.3%,YDJG表面阳离子基团量为0.145tmmol/L;改性时间为0.5th时,YDJG对纸张的作用效果最大;DJG中蛋白质与单体质量比为1:3、环氧氯丙烷含量为30%时,YDJG对纸张的增强效果最大。
In order to improve wet paper strength enhancement of the protein graft copolymer (DJG), it was cationically modified. The influence of the amount of modifier, modification time, the mass of protein and monomer in the copolymer, and the copolymer of epichlorohydrin on the paper strength enhancement of cationic protein graft copolymer (YDJG) were investigated. The results showed that the amount of modifier YDJG effects of a large effect. When the amount of modifier is 30%, the increase rate of wet strength of YDJG is 12.8%, the increase rate of dry strength is 10.3%, and the amount of cationic groups on YDJG surface is 0.145 mmol / L. When the modification time is 0.5% YDJG has the most effect on the paper. When the mass ratio of protein to monomer in DJG is 1: 3 and the content of epichlorohydrin is 30%, YDJG has the strongest enhancement on paper.