Researcher – Xiaochen Li
Aromatic polyimides are leading candidates for high temperature applications, such as advanced aerospace vehicles and propulsion systems, due to the good combination of high-temperature resistance and mechanical properties. To resolve the processing difficulty of traditional PMR polyimide, the phenylethynyl-terminated polyimide PETI-340M was developed with great processability, especially for RTM, and free of toxic monomers.
This research project is supported by Boeing, and focused on mechanical behavior and thermal oxidative stability of PETI-340M composites. We looked into the degradation of Unnotched Compressive strength and Open-Hole Compressive strength with thermal aging. We’ll also invest crack generation of thermal cycling.
To better simulate the real high-temperature environment in the application, the aging period will last up to 10000 hours under different temperatures in air.