适于BOPP膜印刷用聚合物乳液的合成与性能  

Synthesis of a polymer emulsion and its application in BOPP film

作　　者：石浩[1] 王海侨[1] 何立凡[1] 李效玉[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2009年第2期53-56,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金："先进炭材料及特种高分子"高等学校学科创新引智计划(B08003)

摘　　要：以苯乙烯(St)、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、丙烯酸-2-乙基己酯(EHA)为基本单体,分别以丙烯酸(AA)、丙烯酰胺(AM)、N-羟甲基丙烯酰胺(NAM)、丙烯酸-2-羟乙酯(HEA)为功能性单体,采用半连续的乳液聚合工艺,合成了丙烯酸酯类的多元共聚物乳液。通过对所得乳液表面能和黏度的变化分析,筛选出低表面能低黏度的功能性单体,最优用量为w(AA)1%～2%,w(AM)0.5%～1%,w(NAM)为0.5%以下,HEA的引入使乳液体系的表面能增加,尽量不用或少用。优化后的乳液,加入少量的成膜助剂,可以很好地铺展在电晕后的BOPP塑料薄膜表面,干燥后涂膜与基材的耐揉搓性、耐水性等性能优异,剥离强度可以达到500N/m。An emulsion resin was synthesized by seeded semi-continuous emulsion polymerization using St, MMA, BA, and EHA as the main monomers and AA, AM, NAM, and HEA as functional monomers. The optimum functional monomer species and amount were identified, based on the criteria of low surface energy and low viscosity, as follows： w（AA） 1% -2%, w（AM） 0.5% -1% and w（NAM）〈0.5%. Addition of HEA led to a dramatic increase in the surface energy of the emulsion and as a result, HEA should only be added in small quantities or, preferably, not all. This optimized emulsion could spread well on BOPP membranes processed by corona treatment. The knead resistance and water resistance were excellent when the film was dry. The peel strength reached values as large as 500 N/m.

关 键 词：乳液树脂 BOPP 剥离强度 耐水性 表面能 

分 类 号：TQ316.334[化学工程—高聚物工业]