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High-Performance Thermally Conductive Polymer Composites

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Composites and Nanocomposites".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 4314

Special Issue Editors

School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: polymer materials; interfacial modification and modification of materials
School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
Interests: nanomaterials; biomimetic materials; polymer materials
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: fuel reactivity; energetic materials; thermal kinetic; combustion performance
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Special Issue Information

Dear Colleagues,

Polymer-based materials are attractive candidates for thermal management because of their light weight, flexibility, and easy processability. However, the inferior thermal conductivity of polymers due to their amorphous structure or weak interchain interactions creates a huge obstacle for efficient thermal conduction. This Special Issue focuses on the selection of more effective materials, and the construction of diversified new systems with high-performance thermal fillers, in order to achieve both ideal thermal conductivity and absorbing properties, as well as other comprehensive properties to meet the application requirements. The aim of this Special Issue is to provide new strategies for the innovative design of thermal conductive composites and expand the application prospects of polymer composites in the field of thermal management. 

Dr. Xu Jia
Dr. Xiao Chen
Dr. Yanchun Li
Dr. Caoxing Huang
Guest Editors

Manuscript Submission Information

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Keywords

  • interfacial modification
  • modification of materials
  • polymer materials
  • carbon materials

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Published Papers (2 papers)

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Research

19 pages, 3781 KiB  
Article
Preparation and Thermal Properties of Propyl Palmitate-Based Phase Change Composites with Enhanced Thermal Conductivity for Thermal Energy Storage
by Linzhi Yin, Min Zhao and Rui Yang
Polymers 2023, 15(15), 3192; https://doi.org/10.3390/polym15153192 - 27 Jul 2023
Cited by 4 | Viewed by 1522
Abstract
Phase change materials (PCMs), which can absorb and release large amounts of latent heat during phase change, have been extensively studied for heat storage and thermal management. However, technical bottlenecks regarding low thermal conductivity and leakage have hindered practical applications of PCMs. In [...] Read more.
Phase change materials (PCMs), which can absorb and release large amounts of latent heat during phase change, have been extensively studied for heat storage and thermal management. However, technical bottlenecks regarding low thermal conductivity and leakage have hindered practical applications of PCMs. In this paper, a simple, economical, and scalable absorption polymerization technique is proposed to prepare the polymethyl methacrylate/propyl palmitate/expanded graphite (MPCM/EG) phase change composites by constructing the microencapsulated phase change materials (polymethyl methacrylate/propyl palmitate, MPCM) with core-shell structures in the three-dimensional (3D) EG networks, taking propyl palmitate as the PCM core, polymethyl methacrylate (PMMA) as the shell, and long-chain “worm-like” EG as the thermally conductive networks. This technique proved to be a more appropriate combinatorial pathway than direct absorption of MPCM via EG. The MPCM/EG composites with high thermal conductivity, high enthalpy, excellent thermal stability, low leakage, and good thermal cycle reliability were prepared. The results showed that the MPCM-80/EG-10 composite demonstrated a high thermal conductivity of 3.38 W/(m·K), a phase change enthalpy up to 152.0 J/g, an encapsulation ratio of 90.3%, outstanding thermal stability performance, and long-term thermal cycle reliability when the EG loading is 10% and propyl palmitate is 80%. This research offers an easy and efficient approach for designing and fabricating phase change composites with promising applications in diverse energy-saving fields, such as renewable energy collection, building energy conservation, and microelectronic devices thermal protection. Full article
(This article belongs to the Special Issue High-Performance Thermally Conductive Polymer Composites)
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11 pages, 3747 KiB  
Article
Preparation of Core-Shell-Structured RDX@PVDF Microspheres with Improved Thermal Stability and Decreased Mechanical Sensitivity
by Hulin Wu, Aifeng Jiang, Mengru Li, Yanyan Wang, Fangchao Zhao and Yanchun Li
Polymers 2022, 14(20), 4262; https://doi.org/10.3390/polym14204262 - 11 Oct 2022
Cited by 7 | Viewed by 2132
Abstract
Reducing the sensitivity of high-energy simple explosives is the key technology in improving the practical application of high-energy insensitive powder. As the most widely used high-energy explosive, hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is limited in application due to its high sensitivity. In this work, polyvinylidene fluoride [...] Read more.
Reducing the sensitivity of high-energy simple explosives is the key technology in improving the practical application of high-energy insensitive powder. As the most widely used high-energy explosive, hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is limited in application due to its high sensitivity. In this work, polyvinylidene fluoride (PVDF) was used as an energetic binder. Core-shell-structured RDX@PVDF microspheres are produced using electrospray assembly technology and fully characterized by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive spectroscopy, and mechanical sensitivity. Their thermal stability and mechanical sensitivity are directly related to the weight fraction of the added PVDF. Moreover, core-shell-structured RDX@PVDF microspheres with RDX and PVDF in the proportion three to one possess a spherical-like morphology, the lowest impact sensitivity, the lowest friction sensitivity, and the highest thermal stability. This work provides a facile method for the positive design energetic materials and the prediction of their environmental adaptability. Full article
(This article belongs to the Special Issue High-Performance Thermally Conductive Polymer Composites)
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