Bioinspired polydopamine coating on the surfaces of energetic materials to enhance the interfacial mechanical performances

摘要

The materials coated with the robust and integrated film, combined with excellent wettability and high interfacial mechanical strength are important for the development of composite materials. Inspired by the foot protein of mussels, the energetic material TATB coated with the self-assembling polydopamine were prepared by a simple solution stirring process in the study. Because of the roughness constructed by nanoscale structures and the higher surface energy for the coatings, the as-prepared TATB@PDA showed better wettable properties by water and thermosetting resin compared with the original TATB. The excellent wettabilty could improve the adhesive property between the TATB@PDA and resin in the slurry. Furthermore, the mechanical performances of the grains for TATB@PDA-resin were better than that of the grains for TATB-resin, which were due to the excellent wettability, enhanced adhesive properties and riched active groups for the surfaces. The results of this study might provide the bioinspired polydopamine coating as a superior interfacial film to enhance the adhesive and mechanical performances used in composite materials.