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Cation–π interaction assisted facile preparation of graphene/epoxy nanocomposites with superior strength and toughness. J Appl Polym Sci 2022. [DOI: 10.1002/app.52935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Shen Y, Wang B, Li D, Xu X, Liu Y, Huang Y, Hu Z. Toughening Shape-Memory Epoxy Resins via Sacrificial Hydrogen Bond. Polym Chem 2022. [DOI: 10.1039/d1py01625c] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The long fatigue life and stable performance in extreme environment of composites have been putting forward requirements for both high strength and toughness of epoxy matrix. However, for thermosets, promoting...
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Yan X, Yang L, Wang J, Jiang L, Xu Y, Huang Y, Chang G. Enhanced mechanical and photocatalytic performances of epoxy nanocomposites filled with potassium‐modified graphitic carbon nitride nanosheets. J Appl Polym Sci 2021. [DOI: 10.1002/app.51328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xin Yan
- State Key Laboratory of Environment‐friendly Energy Materials, School of Material Science and Engineering Southwest University of Science and Technology Mianyang China
| | - Li Yang
- State Key Laboratory of Environment‐friendly Energy Materials, School of Material Science and Engineering Southwest University of Science and Technology Mianyang China
| | - Jun Wang
- State Key Laboratory of Environment‐friendly Energy Materials, School of Material Science and Engineering Southwest University of Science and Technology Mianyang China
| | - Lei Jiang
- State Key Laboratory of Environment‐friendly Energy Materials, School of Material Science and Engineering Southwest University of Science and Technology Mianyang China
| | - Yewei Xu
- State Key Laboratory of Environment‐friendly Energy Materials, School of Material Science and Engineering Southwest University of Science and Technology Mianyang China
| | - Ying Huang
- State Key Laboratory of Environment‐friendly Energy Materials, School of Material Science and Engineering Southwest University of Science and Technology Mianyang China
| | - Guanjun Chang
- State Key Laboratory of Environment‐friendly Energy Materials, School of Material Science and Engineering Southwest University of Science and Technology Mianyang China
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Wang C, Zhang S, Li S, Zhang L, Zhou Y, Ma J, Zhang L. Toughening rigid thermoset films via molecular enforced integration of covalent crosslinking and multiple supramolecular interactions. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Cheng Wang
- Research Center of Laser Fusion China Academy of Engineering Physics Mianyang China
| | - Shuai Zhang
- Research Center of Laser Fusion China Academy of Engineering Physics Mianyang China
| | - Shanggeng Li
- Research Center of Laser Fusion China Academy of Engineering Physics Mianyang China
- Department of Engineering and Applied Physics University of Science and Technology of China Hefei China
| | - Longfei Zhang
- Research Center of Laser Fusion China Academy of Engineering Physics Mianyang China
| | - Yawen Zhou
- Research Center of Laser Fusion China Academy of Engineering Physics Mianyang China
| | - Jiajun Ma
- State Key Laboratory of Environment‐friendly Energy Materials & School of Material Science and Engineering & National Engineering Technology Center for Insulation Materials Southwest University of Science and Technology Mianyang China
| | - Lin Zhang
- Research Center of Laser Fusion China Academy of Engineering Physics Mianyang China
- State Key Laboratory of Environment‐friendly Energy Materials & School of Material Science and Engineering & National Engineering Technology Center for Insulation Materials Southwest University of Science and Technology Mianyang China
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Wang C, Zhang LF, Li W, Yang LR, Ma JJ, Zhang S, Zhang L. Simultaneously improving the ductility and strength of aromatic thermoset films. HIGH PERFORM POLYM 2021. [DOI: 10.1177/09540083211017189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Aromatic thermoset materials have shown great potential applications in various fields owing to their excellent mechanical strengths. However, their poor ductility is still hinders their large-scale applications. In this study, a new class of aromatic thermosets consisting of two types of crosslinks was successfully developed by incorporating the special group imidazole into a type of crosslinked thermoset. One crosslink is constituted of reversible multiple noncovalent interactions containing “face-face” π–π stacking, “point-point” hydrogen bonds, and ion-pair electrostatic interactions, whereas the other is composed of permanent covalent bonds. Most importantly, the synergetic interplay among these reversible multiple noncovalent interactions enables them to evade the restrictions from the aromatic polymer skeletons to proceed with their dynamic dissociating-rebuilding processes, which can timely and effectively dissipate the internal stress. Finally, owing to the coefficient of these two types of crosslinks, a significantly enhanced ductility was successfully obtained on these aromatic thermosets and their tensile strengths were also improved. Such thermosets having simultaneously enhanced strengths and ductility are predicted to be eventually used in a wide range of applications.
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Affiliation(s)
- Cheng Wang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, People’s Republic of China
| | - Long Fei Zhang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, People’s Republic of China
- State Key Laboratory of Environment-friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
| | - Wa Li
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, People’s Republic of China
| | - Li Rong Yang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, People’s Republic of China
| | - Jia Jun Ma
- State Key Laboratory of Environment-friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
| | - Shuai Zhang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, People’s Republic of China
| | - Lin Zhang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, People’s Republic of China
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Cao L, Yang L, Xu Y, Yin Q, Huang Y, Chang G. A Toughening and Anti-Counterfeiting Benzotriazole-Based High-Performance Polymer Film Driven by Appropriate Intermolecular Coordination Force. Macromol Rapid Commun 2021; 42:e2000617. [PMID: 33491847 DOI: 10.1002/marc.202000617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/22/2020] [Indexed: 11/11/2022]
Abstract
It is of great significance to circumvent the inherent trade-off between strength and extensibility for epoxy resins. Herein dynamic Cu-benzotriazole cross-links are incorporated, as the appropriate intermolecular coordination interaction, into high performance epoxy networks, and the resulting epoxy resins exhibits outstanding thermal stability and mechanical properties, their strength and extensibility are simultaneously improved. Additionally, local manipulation of coordination crosslinking confers the film with anti-counterfeiting function.
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Affiliation(s)
- Liang Cao
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, P. R. China
| | - Li Yang
- School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, P. R. China
| | - Yewei Xu
- School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, P. R. China
| | - Qiang Yin
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900, P. R. China
| | - Ying Huang
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, P. R. China
| | - Guanjun Chang
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, P. R. China
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