低温固化EP用微胶囊固化剂的制备及性能表征  

Preparation and properties characterization of microcapsules curing agent for low-temperature curable EP

作　　者：陶瑜骁 王标兵[1] 陶宇[1] 

机构地区：[1]常州大学材料科学与工程学院,江苏常州213164

出　　处：《中国胶粘剂》2016年第8期1-6,共6页China Adhesives

基　　金：国家自然科学基金项目(51303016);江苏省高校自然科学基金项目(13KJB430004)

摘　　要：以PMF（聚三聚氰胺-甲醛树脂）为壁材、TMPMP[三羟甲基丙烷三（3-巯基丙酸酯）]为芯材,采用原位乳液聚合法制备了微胶囊固化剂。探讨了乳化剂类型及掺量、芯壳比[即m（囊芯）∶m（囊壁）]、反应温度、反应时间和p H等对合成微胶囊的粒径和稳定性等影响。研究结果表明：当m（EP）∶m（微胶囊固化剂）∶m[固化促进剂（DMP-30）]=100∶120∶1、芯壳比为2∶1、反应时间为60 min、反应温度为60℃、p H为3和搅拌速率为400 r/min时,微胶囊的粒径为50-125μm,并且具有很好的封闭性和耐热性,能在0℃以上达到较好的固化效果。With PMF（polymelamine-formaldehyde） as shell material, and TMPMP[trimethylolpropane tri- （3- mercaptoropionate）] as core material, a microcapsule curing agent was prepared by in-situ emulsion polymerization. The influences of emulsifier types and contents, core/shell ratios （namely mass ratios of capsule core monomers to capsule wall monomers） , reaction temperatures, reaction time and pH values on size and stability of synthesizing microcapsules were discussed. The research results showed that the microcapsule size was 50-125 μm, and it had the good sealing ability, heat resistance and curing efficiency at temperature above 0℃ when mass fraction m（EP） ： m（mieroeapsule curing agent） ： m[curing catalyst （DMP-30）] was 100： 120： 1, core/shell ratio was 2： reaction time was 60 min, reaction temperature was 60 ℃, pH value was 3, and stirring speed was 400 r/min.

关 键 词：环氧树脂 微胶囊 固化剂 三羟甲基丙烷三(3-巯基丙酸酯) 三聚氰胺-甲醛树脂 低温固化 原位乳液聚合 

分 类 号：TQ314.256[化学工程—高聚物工业] TQ433.437