摘要:本文以顺丁烯二酸酐（MAH）、4-氨基苯甲酸（4-AA）为原料，以N-N-二甲基甲酰胺（DMF）为溶剂，以五氧化二磷为脱水剂反应合成N-(4-羧基苯基)马来酰亚胺（CPMA）。 并用红外光谱（IR）、核磁共振光谱（H-NMR）、差示量热扫描仪（DSC）对CPMA的结构进行表征。实验结果表明：顺丁烯二酸酐（MAH）与4-氨基苯甲酸配比1.2：1，反应温度为70℃，反应时间4小时，N-(4-羧基苯基)马来酰亚胺的产率可以达到80%，以工业酒精为溶剂进行重结晶后液相色谱分析可以测得单体纯度为99.72%。
以过氧化二异丙苯（DCP）为引发剂，N-(4-羧基苯基)马来酰亚胺（CPMA）为接枝单体，采用熔融反应挤出法制备了CPMA接枝高密度聚乙烯（HDPE-g-CPMA），讨论了其用量对PA6/HDPE综合性能的影响。结果表明：HDPE-g-CPMA接枝物可显著改善PA6/HDPE体系的相容性，其用量为6‰，PA6/HDPE的质量比为800/200时，综合性能最佳。
关键词：N-(4-羧基苯基)马来酰亚胺；高密度聚乙烯；熔融接枝；力学性能
Abstract：N-(p-carboxyphenyl)maleimide was prepared from maleic anhydride and amino acid with DMF as the solvent and phosphorus pentoxide as dehydrated agent. The structure of the product was characteristiced by IR 、H-NMR and DSC. The experiment results show that : when the ratio of maleic anhydride and amino acid is 1.2：1, the temperature of the reaction is 70℃,the time of the reaction was 4 hours ,the productivity of N-(p-carboxyphenyl)maleimide can reach 80%. Then alcohol recry-stallization purification, liquid chromatographic analysis measured the purity of N-(p-carboxyphenyl)maleimide can reach 99.72%.
DCP as the initiator , N-(p-carboxyphenyl)maleimide as grafted monomer , discussed the reactive extrusion process of HDPE molten grafted the monomer . Discuss the different dosage of HDPE-g-CPMA ,to improve the properties of PA6/HDPE alloy. Result show that : the percent grafting is higher, and improve the properties of PA6/HDPE alloy. When the dosage of compatibilizers is 6‰, PA6/HDPE quality for 800/200, comprehensive mechanical performance is the best.
Key words: N-(p-carboxyphenyl)maleimide; HDPE; melt grafting; mechanical property
