Preparation and properties of heat-resistant composite materials based on polyimide foams

G. V. Vaganov, K. S. Polotnyanshchikov, V. M. Svetlichnyi, E. N. Popova, V. E. Yudin

The Petersburg Nuclear Physics Institute, The National Research Center "Kurchatov Institute"

Abstract: Foaming polyimide binders based on ethyl ether of 3,3',4,4'-diphenyl oxide tetracarboxylic acid and diamines: 4,4'-diaminodiphenyloxide and 4,4'-diaminodiphenylmethane in powder form have been synthesized. Polyimide foam composites based on synthesized binders reinforced with polyimide fibers have been obtained. The thermal and mechanical properties of polyimide foam composites are investigated. It is shown that by varying the composition of the diamine fragment in a polyimide binder, it is possible to obtain materials that combine a high level of heat resistance, heat resistance, and mechanical properties with a low mass.

Keywords: polyimide binder, prepregs, foam composites, mechanical properties, heat resistance.

Received: 14.05.2025
Revised: 02.07.2025
Accepted: 09.07.2025

DOI: 10.61011/PJTF.2025.20.61392.20373

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