CAJ | 학술논문

通过分子设计,合成了新型含碘基苯基的双酚单体4-碘苯基对苯二酚( I-Ph-HQ),利用上述单体与含氟双酚单体(3-三氟甲基)苯基对苯二酚和氟酮通过亲核取代缩聚反应合成了一系列侧链含卤素基团的聚芳醚酮共聚物( PEEK-CF3-I)。通过FTIR和1 H NMR等测试手段,表征了共聚物的化学结构。研究了所合成的PEEK-CF3-I共聚物的介电性能、热性能和机械性能,探讨了共聚物中含碘侧基和含氟侧基含量的变化及对材料各项性能的影响。研究表明,共聚物中含碘侧基含量的增加能够显著提升共聚物的玻璃化转变温度,其中共聚物材料PEEK-CF3-I-10%的玻璃化转变温度为153℃,同时材料依然能够保持优异的机械性能和较低的介电常数。
통과분자설계,합성료신형함전기분기적쌍분단체4-전분기대분이분( I-Ph-HQ),이용상술단체여함불쌍분단체(3-삼불갑기)분기대분이분화불동통과친핵취대축취반응합성료일계렬측련함서소기단적취방미동공취물( PEEK-CF3-I)。통과FTIR화1 H NMR등측시수단,표정료공취물적화학결구。연구료소합성적PEEK-CF3-I공취물적개전성능、열성능화궤계성능,탐토료공취물중함전측기화함불측기함량적변화급대재료각항성능적영향。연구표명,공취물중함전측기함량적증가능구현저제승공취물적파리화전변온도,기중공취물재료PEEK-CF3-I-10%적파리화전변온도위153℃,동시재료의연능구보지우이적궤계성능화교저적개전상수。
A novel bisphenol monomer 4-iodophenyl hydroquinone ( I-Ph-HQ) was synthesized. Further, a series of poly( aryl ether ketone) s containing halogen groups in side chains( PEEK-CF3-I) was synthesized by nucleophilic substitution polycondensation reaction using the bisphenol monomer I-Ph-HQ and ( 3-trifluoro-methyl) phenyl hydroquinone with 4,4'-difluorobenzophenone(DFB). The chemical structures of the copolymers were characterized by FTIR and 1 H NMR. Moreover, the dielectric properties, thermal properties and mechanical properties of the prepared copolymers PEEK-CF3-I were revealed. The effect of fluorine and iodine side groups in the copolymer was discussed. The results show that the glass transition temperature( Tg ) of copolymer can be significantly enhanced with the increase of the content of iodine side groups in copolymers, especially for copolymer material PEEK-CF3-I-10% the Tg is 153 ℃, meanwhile, the material exhibits excellent mechanical properties and low dielectric constant.