• • The supramolecular polymer achieves a Young's modulus of 47.08 MPa, elongation at break of 605%, and toughness of 15.24 MJ m−3, enabling robust mechanical performance for load-bearing damping applications.
• • Dynamic hydrogen bonds provide dual responsiveness: a 6.7-fold change in Young's modulus under varying strain rates and a five-order-of-magnitude variation in storage modulus across temperatures, allowing tunable damping across operational conditions.
• • The loss factor (tanδ) reaches 1.6 at 1 Hz, significantly exceeding conventional viscoelastic polymers (tanδ < 0.1), indicating superior energy dissipation efficiency for vibration and noise reduction.
• • Side-chain interpenetration and mutual friction under mechanical forces enable repetitive energy dissipation, addressing the trade-off between damping capacity and toughness that limits current materials.