缓释型微胶囊化紫外线吸收剂的制备及性能研究  

Preparation and properties of a controlled-release microencapsulated ultraviolet stabilizer

作　　者：张林 施江杨 陈伟峰 张玲[2] 杭祖圣[2] 

机构地区：[1]扬州市产品质量监督检验所,江苏扬州225111 [2]南京工程学院,江苏南京211167

出　　处：《现代化工》2015年第6期124-127,共4页Modern Chemical Industry

基　　金：江苏省自然科学基金资助项目(BK20130747);江苏省苏北专项资助项目(BC2013434)

摘　　要：利用原位聚合法，以三聚氰胺甲醛（MF）树脂为壁材对苯并三氮唑（芯材）进行微胶囊化，制备了一种具备缓释性能的新型紫外线吸收剂。采用SEM、XRD、HPLC等手段研究了其微观结构和缓释等宏观性能与制备工艺之间的关系，通过与LDPE共混制样后评价其抗紫外性能。结果表明：当三聚氰胺甲醛比为1：3，聚合温度控制在50～60℃，聚合反应时间为2h，芯材、壁材质量比为2．5，马来酸酐共聚物作为分散剂，可以得到包覆率最高且具备缓释性能的微胶囊化紫外线吸收剂，其抗紫外性能优于未包覆的苯并三氮唑。A novel ultraviolet stabilizer with control-released property is prepared by microencapsulated benzotriazole coated with melamine-formaldehyde （ MF ） resin which is prepared through in situ polymerization. The relationship of micro-structures and control-released property with preparation process are studied by SEM, XRD, HPLC, et al. The results show that a control-released micro-encapsulated ultraviolet stabilizer with maximum coating rate can be obtained under the following conditions： 1 ： 3 ratio of melamine and formaldehyde, 50 - 60℃ of polymerization temperature ,2 hours of reaction time ,2. 5 of the ratio of core and shell and a maleic anhydride copolymer as dispersant. The ultraviolet resistant performance of the obtained ultraviolet stabilizer is better than the one which was not coated with benzotriazole.

关 键 词：抗紫外线剂 微胶囊 三聚氰胺甲醛树脂 

分 类 号：TQ314[化学工程—高聚物工业]