Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 27, Pages 30847-30855Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c07727
Keywords
hydrogen bond elastomer; toughness; puncture resistance; crack self-diagnose; self-healing
Funding
- National Natural Science Foundation of China [NSFC 51873170, 11732012]
- Key Laboratory Construction Program of Xi'an Science and Technology Bureau [201805056ZD7CG40]
- Young Talent Support Plan of Xi'an Jiaotong University
- Fundamental Research Funds for the Central Universities
- One Hundred Talents Program of Shaanxi Province
- Shaanxi Key Industry Innovation Chain Project [2019ZDLGY02-02]
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Ensuring material performance reliability and lifetime is crucial for practical operations. Small cracks on the material surface are often detrimental to its safe operation. This study describes the development of a hydrogen bond-rich puncture-resistant polyurethane elastomer with supertoughness. The as-prepared polyurethane transparent films feature high tensile break strength (57.4 MPa) and great toughness (228 MJ m(-3)). Additionally, a facile, low-cost, crack self-diagnostic approach through photoluminescence using a small luminous pen is reported. The materials efficiently achieved self-healing at 90 degrees C after the crack formation. The change of fluorescence intensity on the crack can be used to track the self-healing process. Therefore, this work provides a guideline for the material design of supertough, puncture-resistant, transparent, and healable elastomers and a crack self-diagnosis and healing approach.
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