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Luo J, Yang X, Xue Y, Yang C, Yang Z, Cai Z, Liu Y, Ma Y, Zhang H, Yu J. High-Performance, Multifunctional, and Designable Carbon Fiber Felt Skeleton Epoxy Resin Composites EP/CF-(CNT/AgBNs)x for Thermal Conductivity and Electromagnetic Interference Shielding. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306828. [PMID: 37789504 DOI: 10.1002/smll.202306828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/03/2023] [Indexed: 10/05/2023]
Abstract
In this work, high-performance epoxy resin (EP) composites with simultaneous excellent thermal conductivity (TC) and outstanding electromagnetic shielding properties are fabricated through the structural synergy of 1D carbon nanotubes and 2D silver-modified boron nitride nanoplates (CNT/AgBNs) to erect microscopic 3D networks on long-range carbon fiber (CF) felt skeletons. The line-plane combination of CNT/AgBNs improve the interfacical bonding involving EP and CF felts and alleviate the phonon scattering at the interface. Eventually, the TC of the EP composites is enhanced by 333% (up to 0.91 W m-1 K-1 ) with respect to EP due to the efficient and orderly transmission of phonons along the 3D pathway. Meanwhile, the unique anisotropic structure of CF felt and exceptional insulating BNs diminishes the electronic conduction between CNT and CFs, which protects the through-plane insulating properties of EP composites. Furthermore, the EP composites present favorable electromagnetic shielding properties (51.36 dB) attributed to the multiple reflection and adsorption promoted by the multiple interfaces of stacked AgBNs and heterointerface among CNT/AgBNs, CF felt and EP. Given these distinguishing features, the high-performance EP composites open a convenient avenue for electromagnetic wave (EMW) shielding and thermal management applications.
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Affiliation(s)
- Jiamei Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Center for Civil Aviation Composites, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Xueqin Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Yi Xue
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Center for Civil Aviation Composites, Donghua University, Shanghai, 201620, China
| | - Chenxi Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Zehao Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Center for Civil Aviation Composites, Donghua University, Shanghai, 201620, China
| | - Zhixiang Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Center for Civil Aviation Composites, Donghua University, Shanghai, 201620, China
| | - Yong Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yu Ma
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hui Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Center for Civil Aviation Composites, Donghua University, Shanghai, 201620, China
| | - Jianyong Yu
- Center for Civil Aviation Composites, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
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An L, Gu R, Zhong B, Wang J, Zhang J, Yu Y. Quasi-Isotropically Thermal Conductive, Highly Transparent, Insulating and Super-Flexible Polymer Films Achieved by Cross Linked 2D Hexagonal Boron Nitride Nanosheets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101409. [PMID: 34636142 DOI: 10.1002/smll.202101409] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Polymer-based thermal management materials (TIMs) show great potentials as TIMs due to their excellent properties, such as high insulation, easy processing, and good flexibility. However, the limited thermal conductivity seriously hinders their practical applications in high heat generation devices. Herein, highly transparent, insulating, and super-flexible cellulose reinforced polyvinyl alcohol/nylon12 modified hexagonal boron nitride nanosheet (PVA/(CNC/PA-BNNS)) films with quasi-isotropic thermal conductivity are successfully fabricated through a vacuum filtration and subsequent self-assembly process. A special structure composed of horizontal stacked hexagonal boron nitride nanosheets (h-BNNSs) connected by their warping edges in longitudinal direction, which is strengthened by cellulose nanocrystals, is formed in PVA matrix during self-assembly process. This special structure makes the PVA/(CNC/PA-BNNS) films show excellent thermal conductivity with an in-plane thermal conductivity of 14.21 W m-1 K-1 and a through-plane thermal conductivity of 7.29 W m-1 K-1 . Additionally, the thermal conductive anisotropic constants of the as-obtained PVA/(CNC/PA-BNNS) films are in the range of 1 to 4 when the h-BNNS contents change from 0 to 60 wt%, exhibiting quasi-isotropic thermal conductivity. More importantly, the PVA/(CNC/PA-BNNS) films exhibit excellent transparency, super flexibility, outstanding mechanical strength, and electric insulation, making them very promising as TIMs for highly efficient heat dissipation of diverse electronic devices.
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Affiliation(s)
- Lulu An
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Rong Gu
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Bo Zhong
- School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai, 264209, P. R. China
| | - Jilin Wang
- School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, P. R. China
| | - Junyan Zhang
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yuanlie Yu
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Salunke A, Sasidharan S, Cherukattu Gopinathapanicker J, Kandasubramanian B, Anand A. Cyanate Ester—Epoxy Blends for Structural and Functional Composites. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05008] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Akshaykumar Salunke
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Pune, 411025, India
| | - Sarath Sasidharan
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
- School of Materials Science and Engineering, National Institute of Technology, Calicut, 673601, India
| | - Jayalakshmi Cherukattu Gopinathapanicker
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Pune, 411025, India
| | - Balasubramanian Kandasubramanian
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Ministry of Defence, Pune, 411025, India
| | - Anoop Anand
- Composites Research Center, Research and Development Establishment (Engineers), DRDO, Ministry of Defence, Pune, 411015, India
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Wang Y, Wu W, Drummer D, Liu C, Tomiak F, Schneider K, Huang Z. Achieving a 3D Thermally Conductive while Electrically Insulating Network in Polybenzoxazine with a Novel Hybrid Filler Composed of Boron Nitride and Carbon Nanotubes. Polymers (Basel) 2020; 12:polym12102331. [PMID: 33065970 PMCID: PMC7599568 DOI: 10.3390/polym12102331] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 11/16/2022] Open
Abstract
To solve the problem of excessive heat accumulation in the electronic packaging field, a novel series of hybrid filler (BN@CNT) with a hierarchical “line-plane” structure was assembled via a condensation reaction between functional boron nitride(f-BN) and acid treated carbon nanotubes (a-CNTs). The reactions with different mass ratios of BN and CNTs and the effect of the obtained hybrid filler on the composites’ thermal conductivity were studied. According to the results, BN@15CNT exhibited better effects on promoting thermal conductivity of polybenzoxazine(PBz) composites which were prepared via ball milling and hot compression. The thermally conductive coefficient value of PBz composites, which were loaded with 25 wt% of BN@15CNT hybrid fillers, reached 0.794 W· m−1· K−1. The coefficient value was improved to 0.865 W· m−1· K−1 with 15 wt% of BN@15CNT and 10 wt% of BN. Although CNTs were adopted, the PBz composites maintained insulation. Dielectric properties and thermal stability of the composites were also studied. In addition, different thermal conduction models were used to manifest the mechanism of BN@CNT hybrid fillers in enhancing thermal conductivity of PBz composites.
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Affiliation(s)
- Yi Wang
- Sino-German Joint Research Centre of Advanced Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (C.L.); (Z.H.)
| | - Wei Wu
- Sino-German Joint Research Centre of Advanced Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (C.L.); (Z.H.)
- Correspondence: ; Tel.: +86-64250850
| | - Dietmar Drummer
- Institute of Polymer Technology, Friedrich Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany; (D.D.); (F.T.); (K.S.)
| | - Chao Liu
- Sino-German Joint Research Centre of Advanced Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (C.L.); (Z.H.)
| | - Florian Tomiak
- Institute of Polymer Technology, Friedrich Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany; (D.D.); (F.T.); (K.S.)
| | - Kevin Schneider
- Institute of Polymer Technology, Friedrich Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany; (D.D.); (F.T.); (K.S.)
| | - Zhengqiang Huang
- Sino-German Joint Research Centre of Advanced Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (C.L.); (Z.H.)
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Wang D, Hou D, Chen Z, Ma H, Huang C, Yang L. Effects of trace phenolic hydroxyl groups on the cure behaviours and properties of cyanate esters. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008319900787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To improve the curing properties of cyanate esters and retain their heat resistance, dielectric properties and adhesion properties, modified cyanate copolymers were prepared by blending bisphenol A cyanate (BADCy) ester with phenol, hydroquinone (HO), resorcinol and phloroglucinol (LO). Differential scanning calorimetry analysis (DSC) and Fourier transform infrared spectroscopy were used to investigate the cure behaviours of the prepared compounds. The prepared materials were compared with the BADCy ester containing trace of cobalt acetylacetonate (CoAt). The CoAt/BADCy blend modified by HO exhibited better curing properties. The exothermic peak temperature ( T p) of the CoAt/BADCy blend dropped to 169°C after introducing 1 wt% HO, likely due to the hydroxyl functional groups at the para position of the benzene ring resulting in higher symmetry and reactivity for the HO. In addition, compared with original CoAt/BADCy, the cyanate esters modified by phenolic hydroxyl groups demonstrated higher adhesive properties and a similar glass transition temperature (approximately 290°C) as well as stable dielectric properties. The experimental results indicate potential applications of the cyanate ester under high-temperature conditions.
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Affiliation(s)
- Danrong Wang
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
| | - Defa Hou
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
| | - Zhiwei Chen
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
| | - Hanbing Ma
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
| | - Chundi Huang
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
| | - Lu Yang
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, People’s Republic of China
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Design of Heat-Conductive hBN-PMMA Composites by Electrostatic Nano-Assembly. NANOMATERIALS 2020; 10:nano10010134. [PMID: 31940902 PMCID: PMC7022472 DOI: 10.3390/nano10010134] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 11/16/2022]
Abstract
Micro/nanoscale design of composite materials enables alteration of their properties for advanced functional materials. One of the biggest challenges in material design is the controlled decoration of composite materials with the desired functional additives. This study reports on and demonstrates the homogeneous decoration of hexagonal boron nitride (hBN) on poly(methylmethacrylate) (PMMA) and vice versa. The formation of the composite materials was conducted via a low environmental load and a low-energy-consuming, electrostatic nano-assembly method which also enabled the efficient usage of nano-sized additives. The hBN/PMMA and PMMA/hBN composites were fabricated in various size combinations that exhibited percolated and layer-oriented structures, respectively. The thermal conductivity behaviors of hBN/PMMA and PMMA/hBN composites that exhibited good microstructure were compared. The results showed that microstructural design of the composites enabled the modification of their heat-conducting property. This novel work demonstrated the feasibility of fabricating heat-conductive PMMA matrix composites with controlled decoration of hBN sheets, which may provide a platform for further development of heat-conductive polymeric materials.
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You Y, Tu L, Wang Y, Tong L, Wei R, Liu X. Achieving Secondary Dispersion of Modified Nanoparticles by Hot-Stretching to Enhance Dielectric and Mechanical Properties of Polyarylene Ether Nitrile Composites. NANOMATERIALS 2019; 9:nano9071006. [PMID: 31336901 PMCID: PMC6669864 DOI: 10.3390/nano9071006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/06/2019] [Accepted: 07/10/2019] [Indexed: 02/07/2023]
Abstract
Enhanced dielectric and mechanical properties of polyarylene ether nitrile (PEN) are obtained through secondary dispersion of polyaniline functionalized barium titanate (PANI-f-BT) by hot-stretching. PANI-f-BT nanoparticles with different PANI content are successfully prepared via in-situ aniline polymerization technology. The transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopic instrument (XPS) and Thermogravimetric analysis (TGA) results confirm that the PANI layers uniformly enclose on the surface of BaTiO3 nanoparticles. These nanoparticles are used as functional fillers to compound with PEN (PEN/PANI-f-BT) for studying its effect on the mechanical and dielectric performance of the obtained composites. In addition, the nanocomposites are uniaxial hot-stretched by 50% and 100% at 280 °C to obtain the oriented nanocomposite films. The results exhibit that the PANI-f-BT nanoparticles present good compatibility and dispersion in the PEN matrix, and the hot-stretching endows the second dispersion of PANI-f-BT in PEN resulting in enhanced mechanical properties, crystallinity and permittivity-temperature stability of the nanocomposites. The excellent performances of the nanocomposites indicate that a new approach for preparing high-temperature-resistant dielectric films is provided.
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Affiliation(s)
- Yong You
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Ling Tu
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Yajie Wang
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Lifen Tong
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Renbo Wei
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Xiaobo Liu
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
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