SEDL / STP / STP1174-EB / STP18049S

High-Temperature Behaviors of an Innovative Polymeric Matrix Composite

Lo, Y-J
Assistant scientist, Materials Research & Development Center, Chung Shan Institute of Science and Technology, Lungtan,

Liu, C-H
associate scientist, Materials Research & Development Center, Chung Shan Institute of Science and Technology, Lungtan,

Hwang, D-G
Assistant scientist, Materials Research & Development Center, Chung Shan Institute of Science and Technology, Lungtan,

Chang, J-F
Assistant scientist, Materials Research & Development Center, Chung Shan Institute of Science and Technology, Lungtan,

Chen, J-C
senior scientist, Materials Research & Development Center, Chung Shan Institute of Science and Technology, Lungtan,

Chen, W-Y
senior scientist, Materials Research & Development Center, Chung Shan Institute of Science and Technology, Lungtan,

Hsu, S-E
director Materials, Research & Development Center, Chung Shan Institute of Science and Technology, Lungtan,

Pages: 12    Published: Jan 1993

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Abstract

An innovative research effort has been directed at developing a high-temperature-resistant polymer matrix composite in responding to the need of high specific strength/stiffness materials at elevated service temperatures for high-speed-flight vehicles. A new polyimide with glass transition temperature Tg = 511°C, designated as CSPI (Chung Shan modified Poly-Imide) and its composite reinforced with carbon fiber have been developed by the Material Research and Development Center of the Chung Shan Institute of Science and Technology (MR/DC, CSIST, Taiwan, R.O.C.). The purpose of this paper is to show the high-temperature properties of this carbon/CSPI composite and compare its high-temperature-resistant capability with the conventional carbon/PMR-15 composite. The composites characterization work, including physical, mechanical (static and fatigue) and thermal cycling behaviors at room and elevated temperatures up to 450°C, have been carried out for both carbon/CSPI and conventional carbon/PMR-15 unidirectional and quasi-isotropic laminates. The research results have demonstrated that the carbon/CSPI composites exhibit unique high-temperature characteristics and performance and have high potential for application in supersonic and hypersonic flight vehicles.