超支化咪唑酰胺化衍生物固化剂的制备与性能  

Preparation and properties of hyperbranched imidazole amidate derivatives

作　　者：张宝华[1,2] 翁燕青[1] 崔后礼[1] 薛兴旺[1] 谈惠洁[1] 

机构地区：[1]上海大学环境与化学工程学院,上海200444 [2]东华大学生态纺织教育部重点实验室,上海201620

出　　处：《热固性树脂》2011年第6期4-7,共4页Thermosetting Resin

基　　金：上海市教育基金会2010年度联盟计划资助课题(LM201002);上海市重点学科第3期资助课题(S30109)

摘　　要：合成了不同层数的端羧基超支化聚合物(HBPs-COOH),其与2-甲基咪唑(2-MI),苯甲醇(BP)分别进行酰胺化反应和酯化反应得到了超支化咪唑酰胺化衍生物(HBPIAD)并将其用作环氧树脂中温固化剂。通过红外(FTIR)、动态力学热分析(DMA)、热重分析(TGA)、扫描电镜(SEM)、力学性能测试等方法对固化剂结构及环氧树脂固化物的性能进行了研究。结果表明,超支化咪唑酰胺化衍生物降低了咪唑的固化反应活性,提高了其与环氧树脂的相容性,HBPIAD-1改性后的环氧树脂固化物的力学性能有所提高,拉伸强度可达40.44 MPa,弯曲强度91.44 MPa,冲击强度12.13 kJ/m2,但是随着超支化层数的增加,环氧树脂固化物的力学性能和耐热性有所下降。The carboxyl-terminated hyperbranched polymers with different generations（HBPs-COOH） were synthesized and then the hyperbranched imidazole amidate derivatives（HBPIAD） were prepared by the amidating reaction of HBPs-COOH and 2-methylimidazole（2-MI） and esterification reaction of HBPs-COOH and phenylcarbinol（BP）.The structures and properties of HBPIAD and the cured products were investigated by FT-IR,DMA,TGA,SEM and mechanical property testings.The results showed that HBPIAD could reduce the curing reactivity of imidazole and improve the compatibility with epoxy resin.The mechanical properties of epoxy cured by HBPIAD were improved and the tensile strength,bending strength and impact strength were 40.44 MPa,91.44 MPa and 12.13 kJ/m2,respectively.But the mechanical properties and heat resistance of cured product were decreased with the increasing of hyperbranched layers.

关 键 词：环氧树脂 2-甲基咪唑 超支化聚合物 酰胺化衍生物 固化剂 增韧 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]