以2-苯基-4,4'-二氨基二苯醚为基础的热固性聚酰亚胺树脂及其复合材料  

Thermosetting Polyimide Resins and Composites Derived from 2-Phenyl-4,4'-oxydianiline

作　　者：范卫锋[1,2] 刘秀菊 阎敬灵[1,4] 孟祥胜[1] 刘敬峰[1] 王震[1] FAN Weifeng LIU Xiuju YAN Jingling MENG Xiangsheng LIU Jingfeng WANG Zhen(Changchun Institute of Applied Chemistry, Chinese Academy of Scienees , Changchun 130022, China University of Chinese Academy of Sciences, Beijing 100049, China Shandong Non-metallic Materials Institute, Jinan 250031, China Changzhou Institute of Energy Storage Materials and Devices, Changzhou 213000, China)

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]中国科学院大学,北京100049 [3]山东非金属材料研究所,济南250031 [4]常州储能材料与器件研究院,常州213000

出　　处：《高等学校化学学报》2016年第10期1926-1931,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51473157);江苏省重点研发计划项目(批准号:BE2015008-1)资助~~

摘　　要：以2-苯基-4,4'-二氨基二苯醚(p-ODA)、异构二苯醚二酐(ODPA)和苯乙炔基苯酐(PEPA)为原料,通过两步法合成了聚合度分别为1,2和3的酰亚胺树脂低聚物,并通过模压成型法制备了单向碳纤维增强的聚酰亚胺复合材料.表征了酰亚胺树脂低聚物的溶解性、熔体黏度及其固化物聚酰亚胺树脂的热性能,结果表明,聚酰亚胺树脂具有良好的溶解性,在N,N-二甲基乙酰胺(DMAc)、四氢呋喃(THF)及1,4-二氧六环等溶剂中的溶解度大于30%;所有酰亚胺树脂低聚物的最低熔体黏度均在10 Pa·s以下,具有良好的成型工艺性;聚酰亚胺树脂具有良好的热性能,玻璃化转变温度(Tg)最高可达300℃,5%热失重温度(T5%)最高可达545℃,碳纤维增强聚酰亚胺复合材料PIC-4,4'-ODPA-2具有最佳的高低温力学性能.A series of imide oligomers with a degree of polymerization of 1,2 and 3 was synthesized via a conventional two-step procedure, using 2-phenyl-4,4＇-oxydianiline（ p-ODA） and isomeric oxydiphthalic anhydrides as the monomers,and 4-phenylethynyl phthalic anhydride（ 4-PEPA） as the end-capping reagent.These imide oligomers were fully characterized in terms of solubility,melt viscosity,and thermal properties of cured resins. The solubility of imide oligomers based on 2-phenyl-4,4＇-oxydianiline were higher than 30% in common organic solvents, such as N,N-dimethylacetamide（ DMAc）, tetrahydrofuran（ THF）, and1,4-dioxane. The minimum melt viscosities for these oligomers were lower than 10 Pa·s,which was indicative of their excellent processability. Furthermore,the cured resins possessed good thermal properties,with glass transition temperatures（ Tg） and 5% weight loss temperatures（ T5%） being up to 300 and 545 ℃,respectively. These resins were then formulated into carbon-fiber-reinforced composites,and the composite properties were studied. Composite PIC-4,4＇-ODPA-2 displayed the best mechanical properties at both ambient and elevated temperatures.

关 键 词：聚酰亚胺 2-苯基-4 4'-二氨基二苯醚 溶解性 力学性能 碳纤维增强复合材料 

分 类 号：O633.2[理学—高分子化学]