Crosslinking benzotriazolylimides and polymeric materials on base of them

• Published in: Journal of applied polymer science 2012-12, Vol.126 (6), p.1797-1807
• Main Authors: Farion, Ivan A., Mognonov, Dmitrii M., Il'ina, Olga V., Bal'zhinov, Sergey A.
• Format: Article
• Language: English
• Subjects: benzotriazoles; Binders; composites; Crosslinking; Fuses; Glass fiber reinforced plastics; high performance polymers; maleinimides; Materials science; membranes; Oligomers; Polybenzimidazoles; Polymers; Reproduction; Thermogravimetric analysis
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.34475

A new kind of crosslinking oligobenzotriazolylimides with terminal maleimide groups has been synthesized via an interaction of an excess of bismaleimides with 5,5′‐bisbenzotriazoles in melt. Conditions of obtaining these oligomers were optimized via the syntheses of model compounds. Oligomers, according to dynamic thermogravimetric analysis (DTGA), fuse at 135–160°C, crosslink at 175–250°C, and possess the high thermal stability in air up to 410°C. Using these oligomers as thermosetting binders or crosslinking agents, tough laminate plastics reinforced by a glass‐fiber cloth as well as crosslinked films on base of a linear polybenzimidazole (PBI) matrix were obtained. The plastics and the crosslinked films possess high mechanical characteristics. It has been proved that the crosslinked films on base of the PBI matrix are perspective precursors to design the phosphoric acid electrolyte membranes for the medium temperature fuel cells. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011