超支化UV自引发聚合物的合成及其涂膜性能  

Synthesis of Hyperbranched UV Self-Initiative Polymers and the Performance of Coating Film

作　　者：张鹏飞[1] 杨保平[1] 崔锦峰[1] 郭军红[1] 周应萍[1] 马永强[1] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050

出　　处：《涂料工业》2011年第5期29-34,共6页Paint & Coatings Industry

摘　　要：通过n(二乙醇胺)∶n(甲基丙烯酸甲酯)=1∶1.05进行M ichael加成反应,制得N,N’-二羟乙基-3-氨基甲基丙酸甲酯(MMB)。以季戊四醇为核,MMB为支化单体,采用准一步法合成第2代端羟基的超支化聚合物(PM-2)。通过甲苯-2,4-二异氰酸酯(TD I)分别与甲基丙烯酸-β-羟乙酯(HEMA)、2-羟基-2-甲基-1-苯基丙酮(HMPP)反应,制得含双键的功能单体TD I-HEMA和含光引发基团的功能单体TD I-HMPP,通过这两种单体对PM-2进行端基改性反应,得到超支化UV自引发聚合物(PM-UV)。最后通过调节PM-UV中双键和光引发基团的物质的量之比制得各种PM-UV,并研究各种PM-UV的涂膜性能。结果表明改性单体物质的量之比不同的PM-UV均具有耐热性好、凝胶含量高、成膜硬度好、耐冲击性高等优点。Using diethanolamine and methyl methacrylate（molar ratio of 1： 1.05）, N, N＇ -dihydroxy- ethyl - 3 - amino methyl propionate （MMB） was prepared by Michael addition reaction. Using pentaerythri- tol as the core and MMB as branched monomer and by the method of quasi - one - step a second generation hydroxyl -terminated hyperbranched polymer （PM -2） was synthesized. Though the reaction of toluene 2,4 - diisocyanate （TDI） with [3 - hydroxyethyl methacrylate （HEMA） and 2 - hydroxy - 2 - methyl - 1 - phe- nyl acetone （HMPP） ,two functional monomers, one with the double bond named TDI -HEMA and anther with photo initiative groups named TDI - HMPP were prepared. Though the two functional monomers modi- fied with PM -2, hyperbranched UV self- initiative polymers （PM -UV） was obtained. Finally by adjus- ting the molar ratio of double bond and photo initiative groups, different PM - UV was prepared. The film performance with different PM -UV were studied. The results showed that all PM -UV with different molar ratio could provide good performae, such as good heat resistance, high gel content, hardness, high impact strength, etc.

关 键 词：超支化UV自引发 功能单体 端基改性 UV固化 

分 类 号：TQ637.83[化学工程—精细化工]