High-Strength and Excellent Self-Healing Polyurethane Elastomer Based on Rigid Chain Segment Reinforcement
Guangxi University · Centre National de la Recherche Scientifique · +4 more institutions
Abstract
Owing to their extensive application scope, elastomers that combine high strength and excellent self-healing efficiency have always attracted significant attention and are still a contradiction. In this study, a novel PU elastomer was prepared by combining rigid poly(amic acid) (PAA) chain segments and 3,3-dithiodipropionic dihydrazide (DPH) containing sextuple hydrogen-bonding units and disulfide bonds. The prepared elastomer exhibited a high tensile strength of 50.1 MPa and a high toughness of 144.2 MJ/m3. The rigid PAA chain segments serve as a rigid framework, significantly enhancing the mechanical strength of the elastomer. Meanwhile, DPH with sextuple hydrogen-bonding units and disulfide bonds enabled…
Citation impact
- FWCI
- 23.36
- Percentile
- 100%
- References
- 42
Authors
8Topics & keywords
- Reinforcement
- Elastomer
- Polyurethane
- Self-healing
- Materials science
- Composite material
- Chain (unit)
- Polymer science