An Individualized Core-Shell Architecture Derived from Covalent Triazine Frameworks: Toward Enhancing the Flame Retardancy, Smoke Release Suppression, and Toughness of Bismaleimide Resin

Author：Jiang, X., Chu, F. K., Liu, W., Hu, Y., Hu, W. Z., Song, L.

Journal：Acs Materials Letters

DOI:  10.1021/acsmaterialslett.2c01173

Keywords: Materials Science

Abstract: 

Although the bismaleimide (BMI) resin is a star material in industries, its further applications have been plagued by the serious brittleness and fire hazard for a long time. Hence, a core-shell architecture (MPPM) derived from covalent triazine frameworks was designed to overcome the shortcomings. Excitedly, compared to those of neat BMI, the resultant BMI-2 with only 1 wt % MPPM was capable of achieving 23.4%, 48.6%, and 39.7% decrements on the peak of heat release rate, total heat release, and total smoke release, respectively, exhibiting unprecedented flame-retardant effects under a low addition of flame retardants. Besides, the impact strength of BMI-2 was enhanced by 62.7% with a close tensile strength and storage modulus to those of neat BMI, implying that the toughness of BMI was improved successfully without sacrificing its rigidity. This work provided a unique clue for designing efficient multifunctional modifiers and promoted the development of advanced BMI.