摘要
通过使用不同的丙烯酸酯单体制备了不同的UV密封胶,对比了不同单体对胶粘剂力学性能、耐温性能、抗冲击力以及耐水性能的影响。研究结果表明:单体表面张力与胶粘剂对PC/PC剪切力成反比,胶粘剂耐温性能与单体的玻璃化转变温度(T_(g))成正比,向胶粘剂中添加高T_(g)稀释剂单体,可以显著提升胶粘剂的耐温性能;胶粘剂的抗冲击性能受两方面影响,一方面受胶粘剂与基材的粘接力影响,另外一方面胶粘剂需要同时具备高屈服强度和高断裂伸长率,选用25%含量的丙烯酸异冰片酯(IBOA)单体抗冲击强度能达到最大化;胶粘剂单体中醚键含量越多,吸水率越高,耐水性越差,添加25%含量的双环戊烯基丙烯酸酯(DCPA)单体胶粘剂的耐水性能较好。
Different UV sealants were prepared by using different acrylate monomers,and the effects of different monomers on the mechanical properties,temperature resistance,impact resistance and water resistance of adhesive were compared.The research results showed that the surface tension of monomer was inversely proportional to the shear force of adhesive on PC/PC,and the temperature resistance of adhesive was directly proportional to the glass transition temperature(T_(g))of monomer.Adding a high T_(g) diluent monomer to the adhesive could significantly improve the temperature resistance of adhesive.The impact resistance of adhesive was affected by two aspects.On the one hand,it was affected by the adhesion between adhesive and substrate.On the other hand,the adhesive needed to have both high yield strength and high elongation at break.The impact strength with 25%content of isobornyl acrylate(IBOA)monomer could be maximized.The more ether bond content in the adhesive monomer,the higher water absorption,and the worse water resistance.The water resistance of adhesive with 25%content of dicyclopentenylacrylate(DCPA)monomer was relatively good.
作者
汪尧双
陆信航
王世伟
谢守华
Wang Yaoshuang;Lu Xinhang;Wang Shiwei;Xie Shouhua(Guangdong Provincial Key Laboratory of Electroacoustic Electronic Technology R&D and Application,GuoGuang Electric Company Limited,Guangzhou 510800,Guangdong,China)
出处
《中国胶粘剂》
CAS
2023年第6期47-51,共5页
China Adhesives
基金
科技部2018“现代服务业共性关键技术研发及应用示范”重点专项项目(2018YFB1403800,2018YFB1403803)。
关键词
抗冲击性
耐水性
稀释剂单体
UV密封胶
impact resistance
water resistance
diluent monomer
UV sealant
