|
1
|
Zhang S, Ji S, Wang Z, Zhang J, Zhao W, He C, Chen Y. Mechanical and Recyclable Properties of Polyimine Enhanced by Biomimetic Modification of Graphene Oxide Sheets/Silicon Carbide Nano-Whiskers. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4486. [PMID: 36558339 PMCID: PMC9784416 DOI: 10.3390/nano12244486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Inspired by the mineral bridge between hard phase layers of natural nacre, the biomimetic modified silicon carbide nano-whiskers (MSiCw)/graphene oxide sheets (MGO) reinforced polyimine (PI) composites (MSiCw-MGO-PI) were successfully prepared by heat-pressing at room temperature, which confirmed by FTIR, XPS, and XRD tests. According to the results of mechanical tests, the composites with filling weights of MSiCw and MGO, which were found to be 1% and 0.3%, presented tensile strength of 94.27 MPa, which was 32% higher than the matrix. With the additional weights amount of 1%MSiCw and 0.2%MGO, the impact strength of the composites reached 17.46 KJ/m2, which was increased by 81% compared with the matrix. In addition, the reinforcing mechanisms, such as the bridging principle and mechanism of whiskers pulling out, were investigated by analyzing the fracture surface of MSiCw-MGO-PI composites. The results showed that MSiCw and MGO can synergistically improve the mechanical properties of the composites. In addition, the recyclability of the composites valued by the mechanical properties of the composites from regrinding and heat pressing showed that three generations of MSiCw-MGO-PI composites can still maintain high mechanical properties on account of the better dispersion of the reinforcing phases in the matrix from regrinding.
Collapse
|
|
2
|
Liang S, Feng F, Jiang Z, Wang B, Sun H, Lu G, Li J, Liu Z. In situ mechanical reinforcement of polyimine vitrimer via bioinspired crosslink mineralization. J Appl Polym Sci 2022. [DOI: 10.1002/app.51479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Song Liang
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| | - Fan Feng
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| | - Zhengshun Jiang
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| | - Bingdi Wang
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| | - Hang Sun
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| | - Guolong Lu
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| | - Jiayi Li
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| | - Zhenning Liu
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering Jilin University Changchun PR China
| |
Collapse
|
|
3
|
Pan XF, Wu B, Gao HL, Chen SM, Zhu Y, Zhou L, Wu H, Yu SH. Double-Layer Nacre-Inspired Polyimide-Mica Nanocomposite Films with Excellent Mechanical Stability for LEO Environmental Conditions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105299. [PMID: 34802169 DOI: 10.1002/adma.202105299] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/18/2021] [Indexed: 06/13/2023]
Abstract
Owing to their outstanding comprehensive performance, polyimide (PI) composite films are widely used on the external surfaces of spacecraft to protect them from the adverse conditions of low Earth orbit (LEO). However, current PI composite films have inadequate mechanical properties and atomic oxygen (AO) resistance. Herein, this work fabricates a new PI-based nanocomposite film with greatly enhanced mechanical properties and AO resistance by integrating mica nanosheets with PI into a unique double-layer nacre-inspired structure with a much higher density of mica nanosheets in the top layer. In addition, the unique microstructure and the intrinsic properties of mica also impart the nanocomposite film with favorable ultraviolet and high-temperature resistance. The comprehensive performance of this material is superior to those of pure PI, single-layer PI-mica, and previously reported PI-based composite films. Thus, the double-layer nanocomposite film displays great potential as an aerospace material for use in LEO.
Collapse
Affiliation(s)
- Xiao-Feng Pan
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei, 230026, China
| | - Bao Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Huai-Ling Gao
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei, 230026, China
| | - Si-Ming Chen
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei, 230026, China
| | - YinBo Zhu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - LiChuan Zhou
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - HengAn Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei, 230026, China
| |
Collapse
|