新型苯基取代杂萘联苯型聚芳醚的合成与性能

Synthesis and Properties of Poly(aryl ether)s Containing o-substituted-phenyl Phthalazinone Moieties

将苯基取代类双酚化合物 4-(3 -苯基 -4-羟基苯基 ) -2 ,3 -二氮杂萘 -1 -酮 (OP-DHPZ)与活性双卤单体如 4,4 -二氟二苯酮、4,4 -二氯二苯砜进行高温缩聚反应 ,合成了高分子量的新型苯基取代杂萘联苯型聚芳醚材料 ;用1 H NMR、FT-IR表征了类双酚单体及聚合物的结构 .利用 DSC及 TGA研究了聚合物耐热性能 ,结果表明 ,新型聚芳醚具有优异的耐热性和热稳定性 ,其 Tg 为 2 5 0～ 2 64℃ ,空气中 5 %质量损失温度为442～ 491℃ .聚合物室温下易溶于氯仿、二甲基乙酰胺和硝基苯等极性溶剂 ,并能浇制得到透明、韧性的薄膜 .

A series of novel poly(aryl ether)s: poly(ether sulfone)(PPES), poly(ether ketone)(PPEK) and their copolymer poly(ether sulfone ketone)(PPESK) were synthesized at high temperature by nucleophilic polycondensation of bisphenol 4 (3 phenyl 4 hydroxyphenyl) 2,3 phthalazin 1 one(OP DHPZ) with activated difluorodiphenylketone, dichlorodiphenylsulfone and both together. The (CO) polymers obtained have inherent viscosity of 0 20~0 70 dL/g and glass transition temperature (by DSC) in 250~264 ℃. These polymers have good thermooxidative stability with 5% mass loss temperature of 442~491 ℃ in air. They are readily soluble in chloroform, dimethylacetamide, pyridine etc and can be cast into transparent, tough films. The FT IR and 1H NMR data were recorded .