A high dielectric damping material with flexibility, self‐healing capability, reprocessing capability and impact resistance based on CaCu3Ti4O12/poly(lipoic acid) DOI

Che Zhao,

Yuxuan Zeng,

Yuhan Zhou

et al.

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

Abstract Cross‐linked polymeric damping materials with efficient energy dissipation mechanisms have attracted significant attention in impact protection applications. However, conventional viscoelastic frequently encounter limitations processability and operational durability. Herein, a novel high‐dielectric CaCu 3 Ti 4 O 12 /poly(lipoic acid) dynamic covalent network composite was introduced. This advanced material demonstrated an exceptional self‐healing efficiency of 89.7% after 24 h at ambient temperature remarkable reprocessability through thermally activated bond exchange reactions. Upon damage, the material's mechanical strength integrity can be restored via reformation cross‐linking points within polymer network, thereby extending its lifespan. Notably, synergistic combination interfacial polarization effects from particles equilibrium coordination bonds establishes multiple pathways. unique architecture achieves broadband performance loss factors (tan δ) exceeding 0.3 across extended frequency spectrum (0.009–100 Hz), coupled substantial enhancement dielectric constant. The capability verified steel ball rebound experiment, which exceptionally low rate 3.0%. research offers innovative design concept for developing sustainable impact‐resistant materials. Highlights A successfully synthesized. films exhibit outstanding ability reprocessability. composites achieve superior resistance significantly elevated

Language: Английский

Improving dielectric constant and breakdown strength of CaCu3Ti4O12/millable polyurethane composite films with Ti3C2Tx MXene DOI
Wei Wan, Jie Zhou, Yan Li

et al.

Materials Research Bulletin, Journal Year: 2025, Volume and Issue: unknown, P. 113435 - 113435

Published: March 1, 2025

Language: Английский

Citations

0
A high dielectric damping material with flexibility, self‐healing capability, reprocessing capability and impact resistance based on CaCu3Ti4O12/poly(lipoic acid) DOI

Che Zhao,

Yuxuan Zeng,

Yuhan Zhou

et al.

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

Abstract Cross‐linked polymeric damping materials with efficient energy dissipation mechanisms have attracted significant attention in impact protection applications. However, conventional viscoelastic frequently encounter limitations processability and operational durability. Herein, a novel high‐dielectric CaCu 3 Ti 4 O 12 /poly(lipoic acid) dynamic covalent network composite was introduced. This advanced material demonstrated an exceptional self‐healing efficiency of 89.7% after 24 h at ambient temperature remarkable reprocessability through thermally activated bond exchange reactions. Upon damage, the material's mechanical strength integrity can be restored via reformation cross‐linking points within polymer network, thereby extending its lifespan. Notably, synergistic combination interfacial polarization effects from particles equilibrium coordination bonds establishes multiple pathways. unique architecture achieves broadband performance loss factors (tan δ) exceeding 0.3 across extended frequency spectrum (0.009–100 Hz), coupled substantial enhancement dielectric constant. The capability verified steel ball rebound experiment, which exceptionally low rate 3.0%. research offers innovative design concept for developing sustainable impact‐resistant materials. Highlights A successfully synthesized. films exhibit outstanding ability reprocessability. composites achieve superior resistance significantly elevated

Language: Английский

Citations

0