于淑娟,陆树文,罗振静,杨芳

• 1:广西师范学院 化学与材料科学学院，广西 南宁 530001

摘要(Abstract)：

以2，4-二羟基二苯甲酮（UV-0）为紫外线吸收剂母体，采用巯基-烯点击化学反应方法，制备了一种侧基含有UV-0的新型聚酯型紫外线吸收剂（PEG-b-PE_UV-0）。通过FT-IR、¹H-NMR、UV对产物结构进行了表征。紫外吸收性能测试表明PEG-b-PE_UV-0在UV-A区具有较好的紫外吸收。将该大分子紫外线吸收剂应用到EVA （乙烯-醋酸乙烯共聚物，polyethylene-co-vinylacetate）胶膜中以提高其抗紫外老化性能。通过测试材料老化前后的衰减全反射红外光谱、拉伸强度、羰基指数、扫描电镜、光电子能谱等手段对紫外线吸收剂的应用性能进行了研究，并与添加中间体2，4-二羟基-3-（N，N-二羟乙基-氨甲基）二苯甲酮（HAHBP）的应用性能做了对比研究。结果表明添加PEG-b-PE_UV-0的EVA材料在老化40 d后羰基指数增加的幅度仅为0.89%，约为空白EVA增加量的1/5；表面含氧量仅增加了1.22%，而空白EVA含氧量增加了16.1%；添加大分子紫外线吸收剂PEG-b-PE_UV-0的EVA的拉伸强度保持率明显大于空白EVA材料与添加中间体HAHBP的EVA材料。所合成的大分子紫外线吸收剂PEG-b-PE_UV-0对EVA材料具有良好的抗紫外光老化效果。

关键词(KeyWords)： 二苯甲酮;紫外线吸收剂;EVA;紫外光老化

Abstract:

Keywords:

基金项目(Foundation): 广西高校中青年教师基础能力提升项目（KY2016YB282）。

作者(Author): 于淑娟,陆树文,罗振静,杨芳

DOI: 10.3969/j.issn.1003-9015.2018.05.032

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