含苯侧基杂环聚芳酰胺酰亚胺的合成与性能

聚酰胺酰亚胺 (ＰＡＩ)是一类已商业化的耐热高分子材料 ,具有与聚酰亚胺类似的耐热性能 ,但是改善了聚酰亚胺的溶解性、可加工性能 ,因此进一步开发综合性能优异、加工性能好的聚芳酰胺酰亚胺近年来成为研究热点之一[1～ 3 ] .ＰＡＩ的经典制备方法为 :( 1 )偏苯三酸酰氯与芳香二胺的聚合反应 ;( 2 )含酰亚胺环的偏苯酸和异氰酸酯反应 .近年来聚酰胺酰亚胺又开发了以下途径制备 :( 1 )含亚胺环的二酸与芳香二胺一步缩聚反应 ;( 2 )含亚胺环的芳香二卤代物与二胺的催化羰基化反应等[4～ 6] .本研究组近期合成了一种新型芳香二胺 ,并合成了耐…

THE SYNTHESIS AND PROPERTIES OF POLYAMIDEIMIDES CONTAINING PHENYL-SUBSTITUTED PHTHALAZINONE MOIETIES

A novel diamine 2H (4 aminophenyl) 4 (3 phenyl 4 aminophenoxy) 2,3 phthalazin 1 one(1) containing N—C coupling bond was synthesized and reacted with four aryl diimide dicarboxylic acids to prepare a series of new aromatic poly(amide imide)s via direct polycondensation using Yamazaki phosphorylation procedure.The polymers obtained in high yield had high molecular weight with the inherent viscosity in the range of 0 50～0 70 dLg -1 .Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) indicated that the polymers had high glass transition temperature of 317～343℃ and good thermostability with 10% weight loss temperature above 440℃.They were readily soluble in polar solvents such as NMP、DMF and m cresol etc and clear,tough,flexible films can be cast from their DMAc solutions.The structure of monomer and their polymers was characterized by MS、FT IR and 1H NMR and they are consistant with the proposed structure.X ray diffraction showed that all poly(amide imide)s were amorphous.