Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown
Published: May 2, 2025
ABSTRACT Rapid self‐healing is critical to prevent microcrack propagation into macroscopic fractures in materials, which a key limitation of traditional systems. Herein, we report polyurethane material (PIS) designed for exceptional rapid performance under mild conditions. By incorporating disulfide‐containing chain extender and an aliphatic isocyanate, PIS achieves tensile strength 25.2 MPa elongation at break 461%. The regains its original shape within 30 s 200% elongation, demonstrating outstanding recovery. Surface scratches are completely repaired 120 s, achieving 100% efficiency. This repair capability underscores the potential disulfide‐based dynamic bonds development advanced materials practical applications that combine durability, efficiency, ease use.
Language: Английский