交联改性丙烯酸酯乳液及其在装饰纸上的应用研究  

Cross-linked Acrylic Emulsion and Its Application in Decorative Paper

作　　者：付高位 冯旺龙 王定坤 陈日清[1] 王春鹏[1] FU Gaowei;FENG Wanglong;WANG Dingkun;CHEN Riqing;WANG Chunpeng(Institute of Chemical Industry of Forest Products,CAF,National Engineering Lab. for Biomass Chemical Utilization,Key Lab. of Chemical Engineering of Forest Products,National Forestry and Grassland Administration,Key Lab. of Biomass Energy and Material,Jiangsu Province,Nanjing 210042,China;Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业和草原局林产化学工程重点实验室,江苏省生物质能源与材料重点实验室,江苏南京210042 [2]南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京210037

出　　处：《林产化学与工业》2021年第6期57-66,共10页Chemistry and Industry of Forest Products

基　　金：中央级公益性科研院所基本科研业务专项资金重点项目(CAFYBB2018ZB008)。

摘　　要：以甲基丙烯酸乙酰乙酰氧基乙酯(AAEM)为交联单体,通过种子乳液半连续法制备了丙烯酸酯乳液型胶黏剂。利用红外光谱仪、差示扫描量热仪、热重分析仪、扫描电子显微镜、万能材料试验机等,考察了AAEM用量对丙烯酸酯乳液的聚合影响及在装饰纸上的应用研究。红外分析表明AAEM成功参与了乳液共聚反应。AAEM改性后的丙烯酸酯乳液粒径和黏度分别达到90 nm和21.0 mPa·s以下,单体转化率高达97%以上;改性后的乳胶膜交联度最高达到90.61%。同时,AAEM改性还提高了乳胶膜的热稳定性和耐水性能。胶膜纸的浸渍试验验证了丙烯酸酯乳液成功浸渍到纸张内部,极大提高了装饰纸的机械性能、表面胶合强度、表面耐水性能。浸渍后的胶膜纸挥发分的量和预固化度基本维持在12%~15%和62%~65%,其拉伸强度和断裂伸长率最高分别达到25 MPa和26.9%,同比浸渍前分别提高了13 MPa和25.1个百分点,接触角最高达113°,表面胶合强度达到0.826 MPa。The acrylic emulsion adhesive was prepared by semi-continuous seed emulsion method with using acetoacetoxyethyl methacrylate(AAEM)as the crosslinking agent.The effects of AAEM amount on acrylic emulsion polymerization and its application as an adhesive for the decorative paper were investigated by infrared spectrometer,differential scanning calorimeter,thermogravimetric analyzer,scanning electron microscope,universal material testing machine,etc..The IR results showed that AAEM was successfully participated in the emulsion copolymerization reaction.The particle size and viscosity of the acrylate emulsion modified by AAEM were below 90 nm and 21.0 mPa·s,respectively,and the monomer conversion rate was above 97%and the crosslinking degree of the film obtained from acrytic emulsion reached 90.61%.The modification of AAEM improved the crosslinking degree,thermal stability and water resistance of the obtained acrylate polymer.The impregnation test of the impregnated paper verified that the acrylic emulsion was successfully impregnated into the decorative papers,and greatly improved their mechanical properties,surface bonding strength,surface water resistance.The volatile content and pre-curing degree of the impregnated paper prepared by cross-linked acrylic emulsion,basically maintained at 12%-15%and 62%-65%when it was dipped;the tensile strength and elongation at break were up to 25 MPa and 26.9%,respectively,which were increased by 13 MPa and 25.1%while compared with that of the controlled sample.And the maximum contact angle was 113°and the surface bonding strength reached 0.826 MPa.

关 键 词：乳液聚合 后交联单体 AAEM 丙烯酸酯 胶膜纸 

分 类 号：TQ35[化学工程] TQ323.41