期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 23, 页码 7636-7640出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201902410
关键词
epoxy; fracture toughness; graphene; inverse artificial nacre; temperature sensing
资金
- Excellent Young Scientist Foundation of the National Natural Science Foundation of China [51522301]
- NSFC [21875010, 21273017, 51103004]
- 111 Project [B14009]
- Fundamental Research Funds for the Central Universities [YWF-19-BJ-J-8]
- G.M.J. Schmidt Minerva Centre of Supramolecular Architectures at the Weizmann Institute
- Livio Norzi Professorial Chair in Materials Science
Epoxy nanocomposites combining high toughness with advantageous functional properties are needed in many fields. However, fabricating high-performance homogeneous epoxy nanocomposites with traditional methods remains a great challenge. Nacre with outstanding fracture toughness presents an ideal blueprint for the development of future epoxy nanocomposites. Now, high-performance epoxy-graphene layered nanocomposites were demonstrated with ultrahigh toughness and temperature-sensing properties. These nanocomposites are composed of ca. 99wt% organic epoxy, which is in contrast to the composition of natural nacre (ca. 96wt% inorganic aragonite). These nanocomposites are named an inverse artificial nacre. The fracture toughness reaches about 4.2 times higher than that of pure epoxy. The electrical resistance is temperature-sensitive and stable under various humidity conditions. This strategy opens an avenue for fabricating high-performance epoxy nanocomposites with functional properties.
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