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CHARACTERIZATION OF HIGH TEMPERATURE CARBON FIBER REINFORCED POLYIMIDE MATRIX CO

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Title: CHARACTERIZATION OF HIGH TEMPERATURE CARBON FIBER REINFORCED POLYIMIDE MATRIX COMPOSITES  

 

Abstract: Polyimide composites have become the attractive materials due to their excellent properties, such as high-temperature resistance, light weight, high specific strength and good dimensional stability. The polyimide composites replacing the metal materials in aerospace area can significantly reduce component and vehicle weight, and increase the payload. However, the major barrier to more spread application of these materials is their processability. Therefore, in the present work, a novel polyimide composite with improved processability and hightemperature resistance were investigated. The novel carbon fabric reinforced polyimide composite was prepared by autoclave process. The Differential Scanning Calorimeter (DSC) and rheological tests were performed to analysis chemical reaction process and processability of the polyimide resin. The mechanical and heat resistant properties of polyimide resin and composite were characterized. The fracture morphologies of polyimide resin after mechanical tests were observed by scanning electron microscope (SEM). In addition, the thermal expansion coefficient of polyimide composite was also evaluated. Results showed that the polyimide resin had good processability and could meet the requirements of autoclave process. The glass transition temperature (Tg) of polyimide resin was 455°C, exhibiting good high-temperature resistance. The carbon fabric reinforced polyimide composite exhibited good mechanical properties at 420°C, and can be used in the structure components with service temperature of 420°C in space areas. The retentions of polyimide composite tensile, flexural, compressive and short beam shear strength at 420 °C were all above 50%. And the retentions of polyimide composite tensile and flexible modulus at 420oC were 92% and 94% respectively. No change in the thermal expansion coefficient of polyimide composites could be found in the temperature range of 50 °C ~420°C, indicating the good dimensional stability of composite. 

 

Authors: Lingying Pan, Chao Cui, Weidong Zhao, Lei Wang, Hongjun Guo 

 

Conference: CAMX 2017 –Orlando

 

SKU/Code: TP17-0064

 

Pages: 10


 

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