NMA自交联丙烯酸酯乳液的合成及性能研究  

Synthesis and crosslinking properties of NMA self-crosslinking acrylate emulsion

作　　者：苑立奇 程相林[1] 赵建宏[1] 杨威 任靖宇 胡霄鹏 孙景峰 YUAN Li-qi;CHENG Xiang-lin;ZHAO Jian-hong;YANG Wei;REN Jing-yu;HU Xiao-peng;SUN Jing-feng(School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China;Changge Dayang Paper Co.,Ltd.,Xuchang 461500,China)

机构地区：[1]郑州大学化工学院,河南郑州450001 [2]长葛市大阳纸业有限公司,河南许昌461500

出　　处：《应用化工》2022年第11期3133-3136,共4页Applied Chemical Industry

基　　金：国家自然科学基金资助项目(51902292)。

摘　　要：以甲基丙烯酸甲酯(MMA)和丙烯酸丁酯(BA)为主单体,N-羟甲基丙烯酰胺(NMA)为交联单体,甲基丙烯酸(MAA)为功能单体,考察链转移剂十二硫醇用量、热处理温度及时间对自交联丙烯酸酯乳液交联性能的影响,并考察了交联反应对乳胶膜热稳定性和吸水性能的影响。结果表明,十二硫醇用量为0.2%的条件下,能有效阻止NMA在室温下的交联反应;提高乳胶膜热处理温度与延长热处理时间都可以提高乳胶膜交联度;交联反应可以显著提高乳胶膜的热稳定性,降低乳胶膜的吸水增重;体系加入MAA可以进一步提高体系交联度,在120℃时最高可增加13%。Using methyl methacrylate(MMA)and butyl acrylate(BA)as main monomers,N-hydroxymethyl acrylamide(NMA)as crosslinking monomer and methacrylic acid(MAA)as functional monomers,the effects of the amount of chain transfer agent twelve mercaptan,heat treatment temperature and time on crosslinking properties of self-crosslinking acrylate emulsion were investigated.The effects of crosslinking reaction on the thermal stability and water absorption of latex films were investigated.The results show that the crosslinking reaction of NMA at room temperature can be effectively prevented when the dosage of dodecyl mercaptan is 0.2%;the crosslinking degree of latex film can be improved by increasing the heat treatment temperature and prolonging the heat treatment time;crosslinking reaction can significantly improve the thermal stability of latex film and reduce the water absorption and weight gain of latex film;the addition of MAA can further improve the crosslinking degree of the system,which can be increased by 13%at 120℃.

关 键 词：自交联丙烯酸酯乳液 N-羟甲基丙烯酰胺 交联度 

分 类 号：TQ630[化学工程—精细化工] TS802[轻工技术与工程]