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Kim KH, Jang JU, Yoo GY, Kim SH, Oh MJ, Kim SY. Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5329. [PMID: 37570033 PMCID: PMC10420153 DOI: 10.3390/ma16155329] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Introducing a segregated network constructed through the selective localization of small amounts of fillers can be a solution to overcome the limitations of the practical use of graphene-based conductive composites due to the high cost of fillers. In this study, polypropylene composites filled with randomly dispersed GNPs and a segregated GNP network were prepared, and their conductive properties were investigated according to the formation of the segregated structure. Due to the GNP clusters induced by the segregated structure, the electrical percolation threshold was 2.9 wt% lower than that of the composite incorporating randomly dispersed GNPs. The fully interconnected GNP cluster network inside the composite contributed to achieving the thermal conductivity of 4.05 W/m∙K at 10 wt% filler content. Therefore, the introduction of a segregated filler network was suitable to simultaneously achieve excellent electrical and thermal conductivities at a low content of GNPs.
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Affiliation(s)
- Ki Hoon Kim
- Department of Carbon Composites Convergence Materials Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeonbuk, Republic of Korea;
| | - Ji-Un Jang
- Research Institute of Industrial Science, Hanyang University, 222 Wangsimni-ro, Haengdang-dong, Seongdong-gu, Seoul 04763, Republic of Korea; (J.-U.J.); (S.H.K.)
| | - Gyun Young Yoo
- Department of Organic Materials and Textile Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeonbuk, Republic of Korea;
| | - Seong Hun Kim
- Research Institute of Industrial Science, Hanyang University, 222 Wangsimni-ro, Haengdang-dong, Seongdong-gu, Seoul 04763, Republic of Korea; (J.-U.J.); (S.H.K.)
| | - Myung Jun Oh
- Department of Carbon Composites Convergence Materials Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeonbuk, Republic of Korea;
| | - Seong Yun Kim
- Department of Organic Materials and Textile Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeonbuk, Republic of Korea;
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Lei X, Liang M, Zou H, Zhou S. A holistic evaluation of the influence of shear rates and matrix viscosity on the properties of polypropylene/multi‐walled carbon nanotubes composites. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xue Lei
- The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute, Sichuan University Chengdu China
| | - Mei Liang
- The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute, Sichuan University Chengdu China
| | - Huawei Zou
- The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute, Sichuan University Chengdu China
| | - Shengtai Zhou
- The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute, Sichuan University Chengdu China
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Yu Z, Jiang Z, Qiu Z. In-situ synthesis and thermal properties of biobased Poly(neopentyl glycol 2,5-furandicarboxylate)/multi-walled carbon nanotubes composites. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wu L, Sun X, Xiang C, Wang W, Zhang F, Jiang Q, Tang Y, Lin JH. Short Beam Shear Behavior and Failure Characterization of Hybrid 3D Braided Composites Structure with X-ray Micro-Computed Tomography. Polymers (Basel) 2020; 12:polym12091931. [PMID: 32859096 PMCID: PMC7564245 DOI: 10.3390/polym12091931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 11/16/2022] Open
Abstract
Three-dimensional braided composite has a unique spatial network structure that exhibits the characteristics of high delamination resistance, damage tolerance, and shear strength. Considering the characteristics of braided structures, two types of high-performance materials, namely, aramid and carbon fibers, were used as reinforcements to prepare braided composites with different hybrid structures. In this study, the longitudinal and transverse shear properties of 3D braided hybrid composites were tested to investigate the influences of hybrid and structural effects. The damage characteristics of 3D braided hybrid composites under short beam shear loading underwent comprehensive morphological analysis via optical microscopy, water-logging ultrasonic scanning, and X-ray micro-computed tomography methods. It is shown that the shear toughness of hybrid braided composite has been improved at certain degrees compared with the pure carbon fiber composite under both transverse and longitudinal directions. The hybrid braided composites with aramid fiber as axial yarn and carbon fiber as braiding yarn exhibited the best shear toughness under transverse shear loading. Meanwhile, the composites with carbon fiber as axial yarn and aramid fiber as braiding yarn demonstrated the best shear toughness in the longitudinal direction. Due to the different distribution of axial and braiding yarns, the transverse shear property of hybrid braided structure excels over the longitudinal shear property. The failure modes of the hybrid braided composite under the two loading directions are considerably different. Under transverse loading, the primary failure mode of the composites is yarn fracture. Under longitudinal loading, the primary failure modes are resin fracture and fiber slip. The extensive interfacial effects and the good deformation capability of the hybrid braided composites can effectively prevent the longitudinal development of internal cracks in the pattern, improving the shear properties of braided composites.
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Affiliation(s)
- Liwei Wu
- Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials, Tiangong University, Tianjin 300387, China;
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; (X.S.); (W.W.); (J.-H.L.)
| | - Xiaojun Sun
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; (X.S.); (W.W.); (J.-H.L.)
| | - Chunjie Xiang
- 3D Composites Division, Nanjing Fiberglass Research & Design Institute Co., Ltd. Jiangsu, Nanjing 210012, China;
| | - Wei Wang
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; (X.S.); (W.W.); (J.-H.L.)
| | - Fa Zhang
- Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials, Beijing Aeronautical Science & Technology Research Institute of COMAC, Beijing 102211, China;
| | - Qian Jiang
- Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials, Tiangong University, Tianjin 300387, China;
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; (X.S.); (W.W.); (J.-H.L.)
- Correspondence: ; Tel.: +86-150-2203-4036
| | - Youhong Tang
- Institute for NanoScale Science and Technology, College of Science and Engineering, Flinders University, Adelaide 5042, Australia;
| | - Jia-Horng Lin
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; (X.S.); (W.W.); (J.-H.L.)
- Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan
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Chen L, Zhang J. Designs of conductive polymer composites with exceptional reproducibility of positive temperature coefficient effect: A review. J Appl Polym Sci 2020. [DOI: 10.1002/app.49677] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Long Chen
- Key Laboratory of Rubber‐Plastics, Ministry of Education/ Shandong Provincial Key Laboratory of Rubber‐plastics Qingdao University of Science and Technology Qingdao Shandong China
| | - Jianming Zhang
- Key Laboratory of Rubber‐Plastics, Ministry of Education/ Shandong Provincial Key Laboratory of Rubber‐plastics Qingdao University of Science and Technology Qingdao Shandong China
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Yuan Y, Qu Z, Wang Q, Sun X. Nonlinear Conductive Characteristics of ZnO-Coated Graphene Nanoplatelets-Carbon Nanotubes/Epoxy Resin Composites. Polymers (Basel) 2020; 12:E1634. [PMID: 32717795 PMCID: PMC7466167 DOI: 10.3390/polym12081634] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/18/2020] [Accepted: 07/19/2020] [Indexed: 11/20/2022] Open
Abstract
With the increasing threats arising from the electromagnetic environment, polymeric composites which could exhibit nonlinear conductive characteristics are highly required in the protection of electronic devices against overvoltage. In this research, ZnO nanoparticles are coated onto graphene nanoplatelets (GNPs)-carbon nanotubes (CNTs) hybrid, and then it is embedded in epoxy resin (ER) matrix via solution blending. Based on the characterization results, CNTs are well dispersed across the GNPs which prevent the restacking of GNPs and CNTs. At the same time, ZnO nanoparticles are well-bonded to the surfaces of GNPs-CNTs hybrid. During repeated conductive characteristic measurements, GNPs-CNTs-ZnO/ER composite is able to demonstrate distinctly reversible nonlinear conductive behavior, with high nonlinear coefficients. Especially, the filler content in GNPs-CNTs-ZnO/ER composite is only 12.5% of that in GNPs-ZnO/ER composite reported in our previous work. Moreover, it is shown that the nonlinear coefficients and switching threshold voltage can be modified by controlling the weight ratios of GNPs, CNTs, and ZnO. Finally, the samples with 1:1 weight ratio of GO to MWCNTs (A-6.67 and A-10) exhibit the best reversible nonlinear conductive behavior.
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Affiliation(s)
| | | | - Qingguo Wang
- National Key Laboratory on Electromagnetic Environment Effects, Army Engineering University, Shijiazhuang 050003, China; (Y.Y.); (Z.Q.); (X.S.)
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Reversible Nonlinear I-V Behavior of ZnO-Decorated Graphene Nanoplatelets/Epoxy Resin Composites. Polymers (Basel) 2020; 12:polym12040951. [PMID: 32325923 PMCID: PMC7240747 DOI: 10.3390/polym12040951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/12/2020] [Accepted: 04/13/2020] [Indexed: 11/16/2022] Open
Abstract
With the more serious threats from complex electromagnetic environments, composites composed of conductive or semiconductive fillers and polymeric matrices could exhibit excellent nonlinear I-V characteristics, and have drawn significant attention in the field of overvoltage protection. In this research, graphene nanoplatelets (GNPs) are decorated by ZnO and mixed into an epoxy resin (ER) matrix via solution blending to prepare composites. A characterization analysis and the I-V measurement results of the GNPs/ER composites indicate that ZnO nanoparticles are well bonded with GNPs and exhibit obvious nonlinear I-V behavior under proper applied voltage with high nonlinear coefficients. The switching threshold voltage and nonlinear coefficients could be controlled by adjusting the weight ratio of GNPs and ZnO of the filler. Moreover, compared with the poor recoverability of pure GNP-filled ER in previous research, the GNP-ZnO/ER composites exhibited excellent reversibility of nonlinear I-V behavior under multiple repetitive I-V measurements. And compared with different composites, the sample with a 1:8 weight ratio of GO to Zn(Ac)2 presents the smallest variation of switching threshold voltage at 158 V, with a standard deviation of 1.27% from among 20 measurements, which indicates the best reversibility. Finally, the conducting mechanism of the reversible nonlinear I-V characteristic is investigated and analyzed.
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Liu Z, Ling F, Diao X, Fu M, Bai H, Zhang Q, Fu Q. Stereocomplex-type polylactide with remarkably enhanced melt-processability and electrical performance via incorporating multifunctional carbon black. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122136] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Yuan Y, Qu Z, Wang Q, Cheng E, Sun X. The Nonlinear I–V Behavior of Graphene Nanoplatelets/Epoxy Resin Composites Obtained by Different Processing Methods. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01083-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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