SCIENTIFIC STUDY OF THERMOCHEMICAL AGEING OF HIGH PERFORMANCE POLYMERS USED AS POWER ELECTRONIC HOUSING IN THE AIRCRAFT INDUSTRY

摘要

The aeronautical industry is quite interested in the development of power electronic components to control electrical devices aiming to substitute present aircraft hydraulic systems. In their conception, these components require thermoplastics that must be resistant to various severe environments classically met on civil aircraft. Guided by this technical framework, our study aimed to characterize the ageing of several high performance polymers in different thermochemical conditions in order to simulate the future exploitation medium. Comparison of the data by various analysis techniques (TGA, FTIR, DSC and rheometry) made it possible the interpretation of failure mechanisms.