超支化环氧树脂改性尼龙6的制备与性能研究  

Preparation and Characterization of Polyamide 6 with Hyperbranched Epoxy Modifier

作　　者：靳奇峰 冯培勇[1] 刘跃军[1] JIN Qifeng;FENG Peiyong;LIU Yuejun(College of Packaging and Materials Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007

出　　处：《包装学报》2020年第5期52-58,共7页Packaging Journal

基　　金：湖南省自然科学基金资助面上项目(2017JJ2064)。

摘　　要：为改性尼龙6,以含有脂肪族结构的超支化环氧树脂(AHEP)作为尼龙6的改性剂,制备出不同质量比的AHEP-PA6共混体系。利用熔融指数仪、广角X射线衍射分析仪(WAXD)、力学万能试验机及扫描电子显微镜测试AHEP-PA6共混体系的加工流动性、结晶性能和力学性能。结果表明:AHEP的加入使PA6的结晶度有一定的提高,PA6的晶型发生变化,γ晶型弱化,转化为稳定性较好的α晶型。AHEP在PA6基体中能够均匀分散,二者间较强的相互作用及微交联结构提高了PA6的力学性能,共混体系断面形貌呈现原位增韧增强特征。To modify polyamide 6,hyperbranched polyether epoxy(AHEP)with combination of aliphatic moieties was incorporated at different concentrations into polyamide 6 resin.The melt flow behavior,crystallization behavior,and mechanical properties of the AHEP-PA6 blends were investigated by using melt flow indexer,WAXD,mechanics universal texter and SEM.The results showed that the degree of crystallinity was improved to certain degree with the addition of AHEP.The crystal form of PA6 changed into more stableα-form crystal,with the weakening ofγ-form.AHEP could be uniformly dispersed in PA6 matrix.The strong interaction between the two and the microcrosslinking structure improved the mechanical properties of PA6,and the fracture apperance of the blend system presented the characteristics of in-situ toughening and strengthening.

关 键 词：超支化环氧树脂 尼龙6 结晶 

分 类 号：TB332[一般工业技术—材料科学与工程]