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Fu Y, Huo C, Liu S, Li K, Meng Y. Non-Isothermal Crystallization Kinetics of Montmorillonite/Polyamide 610 Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1814. [PMID: 37368244 DOI: 10.3390/nano13121814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 05/30/2023] [Accepted: 06/02/2023] [Indexed: 06/28/2023]
Abstract
Non-isothermal crystallization kinetics of montmorillonite (MMT)/polyamide 610 (PA610) composites were readily prepared by in situ melt polymerization followed by a full investigation in terms of their microstructure, performance, and crystallization kinetics. The kinetic models of Jeziorny, Ozawa, and Mo were used in turn to fit the experimental data, in all of which Mo's analytical method was found to be the best model for the kinetic data. Differential scanning calorimetry (DSC) and transmission electron microscopy (TEM) studies were used to investigate the isothermal crystallization behavior and MMT dispersion levels in the MMT/PA610 composites. The experiment results revealed that low MMT content can promote the PA610 crystallization, whilst high MMT content result in MMT agglomeration, and reduce the PA610 crystallization rate.
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Affiliation(s)
- Yang Fu
- High & New Technology Research Center of Henan Academy of Sciences, Zhengzhou 450002, China
| | - Cuimeng Huo
- Institute of Chemistry Co., Ltd., Henan Academy of Sciences, Zhengzhou 450002, China
| | - Shuangyan Liu
- High & New Technology Research Center of Henan Academy of Sciences, Zhengzhou 450002, China
| | - Keqing Li
- High & New Technology Research Center of Henan Academy of Sciences, Zhengzhou 450002, China
| | - Yuezhong Meng
- Research Center of Green Catalysts, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450000, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China
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Meng C, Liu X. Study on rheological properties of bio-based semi-aromatic high temperature polyamide PA5T/56 and the effect of PA5T content. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02837-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wang Y, Tang B, Gao Y, Wu X, Chen J, Shan L, Sun K, Zhao Y, Yang K, Yu J, Li W. Epoxy Composites with High Thermal Conductivity by Constructing Three-Dimensional Carbon Fiber/Carbon/Nickel Networks Using an Electroplating Method. ACS OMEGA 2021; 6:19238-19251. [PMID: 34337262 PMCID: PMC8320143 DOI: 10.1021/acsomega.1c02694] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 07/06/2021] [Indexed: 05/24/2023]
Abstract
Heat dissipation problem is the primary factor restricting the service life of an electronic component. The thermal conductivity of materials has become a bottleneck that hinders the development of the electronic information industry (such as light-emitting diodes, 5G mobile phones). Therefore, the research on improving the thermal conductivity of materials has a very important theoretical value and a practical application value. Whether the thermally conductive filler in polymer composites can form a highly thermal conductive pathway is a key issue at this stage. The carbon fiber/carbon felt (CF/C felt) prepared in the study has a three-dimensional continuous network structure. The nickel-coated carbon fiber/carbon felt (CF/C/Ni felt) was fabricated by an electroplating deposition method. Three-dimensional CF/C/Ni/epoxy composites were manufactured by vacuum-assisted liquid-phase impregnation. By forming connection points between the adjacent carbon fibers, the thermal conduction path inside the felt can be improved so as to improve the thermal conductivity of the CF/C/Ni/epoxy composite. The thermal conductivity of the CF/C/Ni/epoxy composite (in-plane K∥) is up to 2.13 W/(m K) with 14.0 wt % CF/C and 3.70 wt % Ni particles (60 min electroplating deposition). This paper provides a theoretical basis for the development of high thermal conductivity and high-performance composite materials urgently needed in industrial production and high-tech fields.
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Affiliation(s)
- Ying Wang
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Bo Tang
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Yuan Gao
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
- Purchasing
and Supplying Logistics Center Department, COMAC Shanghai Aircraft Manufacturing Co., Ltd, Shanghai 201324, China
| | - Xinfeng Wu
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Jin Chen
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
- Electronics
Materials and Systems Laboratory, Department of Microtechnology and
Nanoscience (MC2), Chalmers University of
Technology, SE-412 58 Göteborg, Sweden
| | - Liming Shan
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Kai Sun
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Yuantao Zhao
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Ke Yang
- School
of Materials Science and Engineering, Central
South University, Changsha 410083, China
| | - Jinhong Yu
- Key
Laboratory of Marine Materials and Related Technologies, Zhejiang
Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology & Engineering,
Chinese Academy of Sciences, Ningbo 315201, China
| | - Wenge Li
- Merchant
Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
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Raimo M. Impact of Thermal Properties on Crystalline Structure, Polymorphism and Morphology of Polymer Matrices in Composites. MATERIALS 2021; 14:ma14092136. [PMID: 33922297 PMCID: PMC8122767 DOI: 10.3390/ma14092136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/17/2021] [Accepted: 04/19/2021] [Indexed: 11/23/2022]
Abstract
Morphological analysis at different levels is fundamental to understand properties of materials, as these latter are dictated not only by the chemical composition but also by the shape. Solid structures arise from a balance between thermodynamic and kinetic factors, which, especially for polymer composites, depend also on interactions amongst components. In particular, morphology is strongly affected by the heat transfer pattern during crystallization and by the difference in thermal behavior between polymer matrix and filler. Polymers show a spherulitic structure, arising from the start of crystallization in several points of the liquid phase. Within a general rounded shape, spherulites show variability in growth patterns, morphology, and geometry of boundaries. The appearance and the number of spherulites, as well as their growth mechanism, may vary not only in dependence of the chemical composition and the crystalline structures but also, for a same polymer, in consequence of experimental conditions and incorporation of fillers. This article reviews the crystallization process of polymer matrices in the framework of crystal growth and heat transport theories, and explains microstructural differences between composites and neat matrices on the basis of the differences in thermal capacity and conductivity between polymers and additives.
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Affiliation(s)
- Maria Raimo
- Institute for Polymers, Composites and Biomaterials, National Research Council, Via Campi Flegrei 34, 80078 Pozzuoli, Italy
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