摘要
为制备漆膜性能良好的无溶剂室温固化涂料,利用超支化聚合物独特的结构及性能,通过丙烯酸甲酯与二异丙醇胺的M ichae l加成反应,合成了AB2型单体N,N-二-β-羟丙基-3-胺基丙酸甲酯(简称M B)。在核单体三羟甲基丙烷(TM P)与M B摩尔比为1¨9和1¨21的条件下,采用“准一步法”合成了两种不同摩尔质量的端羟基超支化聚合物。通过其直接与六亚甲基二异氰酸酯(HD I)反应,得到凝胶质量分数超过0.90的室温固化涂层。涂层的抗冲击强度达到50 cm.kg。
Hyperbranched polymers have potential use non-solvent, ambient curable coating materials due to their unique structures and properties. An ABe monomer, N, N-di-β-hydroxylpropyl-3-amine methylpropionate （defined as MB） was prepared from methyl acrylate and diisopropanolamine through Michael addition. Molar ratios between the core monomer trimethylolpropane （defined as TMP） and the MB monomer of 1：9 and 1：21 gave two hydroxylie hyperbranched polyesters with different molar mass prepared using a pseudo one step procedure. In absence of solvent, these polymers directly reacted with hexamethylene diisocyanate （HDI） with ambient conditions to form curing coatings with gel mass fractions higher than 0.90. The self-plasticizing of these molecules gives the coatings an anti impact strength of 50 em · kg.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第12期1654-1656,1675,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(20204005
50233030)
国家教育振兴计划项目(JC2002030)
关键词
超支化聚合物
无溶剂涂料
室温固化
内增塑
hyperbranehed polymer
non-solvent coating
ambient curing
self-plasticizing
