苯乙炔封端的聚酰亚胺树脂的制备及性能研究  

Research on Synthesis and Properties of Phenylethynyl Terminated Polyimides

作　　者：许艺[1] 李长青[1] 任攀[1] 

机构地区：[1]装甲兵工程学院装备维修与再制造工程系,北京100072

出　　处：《新技术新工艺》2015年第5期128-131,共4页New Technology & New Process

基　　金：装甲兵工程学院维修科学研究与改革资助项目(WG2013ZS030003)

摘　　要：制备了苯乙炔封端的聚酰亚胺树脂,向树脂溶液体系中分别混入石墨烯和多壁碳纳米管2种增强相,制备出3种不同配方的聚酰亚胺树脂系列,并研究了树脂的流变性能和热性能。黏温曲线显示,聚酰亚胺树脂在宽广的温度范围内呈现黏度较低的加工平台。TG曲线显示,聚酰亚胺树脂的热分解温度>530℃,且添加石墨烯增强相后耐热性更优。DMA曲线显示,聚酰亚胺树脂的玻璃化转变温度>330℃,添加碳纳米管和石墨烯增强相后树脂的玻璃化转变温度分别提高了3%和6%。Phenylethynyl terminated polyimides matrix resins were synthesized, graphene and MWNTs were added into polyamic acid solution respectively, a series of polyimides matrix resin were prepared and the thermal performance and the rheological property of the matrix resins were studied. It was found that polyimides matrix resins had good rheological property at high temperature. The viscosity-temperature curve of the polyimides matrix resins showed low viscosity over a wide range of temperature. The polyimides matrix resins showed excellent thermal stability, thermal decomposition temperature are beyond 530 ℃, which mixed with grapheme showed better thermal stability. The glass-transition temperature of the polyimides matrix resins are beyond 330℃, which mixed with carbon nanotubes and grapheme are improved by 3 % and 6 %.

关 键 词：聚酰亚胺 流变性能 热性能 

分 类 号：TB323.7[一般工业技术—材料科学与工程]