Development of polyimide aerogel stock shapes through polyimide aerogel particles

Abstract Polyimide aerogels have excellent thermal and mechanical properties, resulting in various applications, especially insulation areas. However, the conventional methods for directly producing aerogel blocks can be time-consuming expensive due to long-term solvent exchange drying. This study developed two alternative techniques, adding dimethyl sulfoxide epoxy into polyimide particles consolidating them obtain PI or stock shapes. approach reduced cycle time of process by nearly 60% compared obtained Samples with look promising appearance properties shapes made directly. The compression test shows that improves property compressive strength at 10% strain 18%. In same context, samples using as a exhibit higher stability porosity when These techniques provide range good prepared from particles.