摘要
分别利用水乳性双酚A型环氧树脂(BAE)和水溶性甘油环氧树脂(GE)对聚乙烯亚胺(PEI)进行改性,制备出了具有强阳离子性的改性聚乙烯亚胺纸张增强剂。讨论了增强剂组成、添加量、助留剂等因素对纸张强度的影响,并用SEM对其纸样微观结构进行了表征。结果表明这两种环氧树脂的引入均可增加聚乙烯亚胺分子与纸纤维的结合强度,纸张湿强度从14.46%分别提高到了21.65%和22.84%。同时BAE改性PEI可使环压指数提高42%,GE改性PEI则能使耐折度提高10%以上。
The cationic strength agents for paper-making are prepared through modification of polyethylene mine （PEI） with bisphenol A epoxy resin （BAE） emulsion and water-soluble glycerine epoxy resin （GE） respectively. The influence of composition, additive amount and retention aid of cationic polyamide on paper strength is studied. The microstructure of paper sheet is characterized by SEM. The results show that both waterborne epoxy resins can increase the bonding strength between PEI and paper fibers,and enhance the wet strength from 14.46% to 21.65% and 22.84% ,respectively. At the same time,the modified PEI with BAE emulsion can improve the ring crush index to 40.54 %, and the modified PEI with GE can make folding endurance increased by over 10%.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2008年第8期42-45,共4页
Modern Chemical Industry
关键词
聚乙烯亚胺
水性环氧树脂
纸张增强剂
纸张强度
polyethylenemine
waterborne epoxy resin
paper strength agent
paper strength
