N-苯基马来酰亚胺-马来酸酐的合成及对尼龙6耐热性能的影响  

Synthesis of N-Phenylmaleimide-Maleic Anhydride Copolymer and Its Effect on Structure and Properties of PA6

作　　者：张景中[1,2] 何敏[1,3] 慈书亭 刘典新[1,2] 于杰[2] 鲁圣军[1,2] 刘一春[1,3] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [3]贵州凯科特材料有限公司,贵州贵阳550014

出　　处：《高分子材料科学与工程》2015年第6期22-26,33,共6页Polymer Materials Science & Engineering

基　　金：贵州省科学技术基金([2013]2122);贵州省科技计划项目([2010]5005);贵州省自然科学基金项目([2012]2123)

摘　　要：利用溶液聚合法合成了一种耐热改性剂N-苯基马来酰亚胺-马来酸酐二元共聚物(NMA)。采用红外光谱对其结构进行表征,并通过熔融共混法制备了尼龙6/N-苯基马来酰亚胺-马来酸酐共混物(PA6/NMA),且通过扫描电镜、差示扫描量热分析、热重分析、热变形试验机及旋转流变仪对共混物耐热性能进行研究。红外光谱分析证实NMA中N-苯基马来酰亚胺(N-PMI)含量随N-PMI投料量的增加而增加;差示扫描量热分析和热重分析表明经NMA改性后的PA6的熔融温度与结晶度下降,热稳定性大幅提高;随着NMA中N-PMI含量降低,共混物热变形温度及力学性能先降低后升高;扫描电镜与旋转流变测试均表明PA6与NMA两相间的粘合作用随N-PMI含量的降低而增大。N-phenylmaleimide-maleic anhydride copolymers(NMA)were synthesized by solution polymerization and the structure of the copolymer was characterized through FT-IR.Nylon 6/N-phenylmaleimide-maleic anhydride(PA6/NMA)blends were prepared by melt blending method.The structure and properties of blends were investigated by SEM,DSC,TGA,heat distortion tester and rotational rheometer.FT-IR confirms that the N-PMI content in NMA increases with increment of N-PMI feeding amount;DSC and TGA show that the melting temperature and crystallinity decrease,the thermal stability of PA6 increases after NMA modified;the heat distortion temperature and mechanical properties of blends decrease first and then increase with decrease of N-PMI content;SEM and rotational rheometer confirm that the adhesion of PA6 and NMA increases with decrement of N-PMI content.

关 键 词：尼龙6 N-苯基马来酰亚胺 马来酸酐 耐热性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]