The introduction of weak hydrogen bonds based on the isophorone structure enables the polymer to have high stretchability and self-healing ability at room temperature to heal propellant damage.

Synergistic combination of multi-level hydrogen bonds and disulfide bonds to construct high-strength, rapid self-healing polyurethane elastomers.

A high self-healing efficient HTPB-based adhesive containing disulfide bonds, which can improve propellant interface debonding defects at a safe temperature.