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Journals
Polymers
Special Issues
Thermal Properties Analysis of Polymers
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Special Issue "Thermal Properties Analysis of Polymers"

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

Deadline for manuscript submissions: 31 January 2024 | Viewed by 915

Special Issue Editors

Dr. Yuan Zhu
E-Mail Website
Guest Editor
School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
Interests: micro- and nano- scale heat transfer theory; thermal measurement; thermal management
Dr. Guimei Zhu
E-Mail Website
Co-Guest Editor
School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
Interests: complex network; phonon engineering; thermal metamaterials; non-equilibrium thermal transport

Special Issue Information

Dear Colleagues,

Polymers and their composites are widely used in all aspects of daily life and industry. Whether the polymers are in the form of solids, liquids, gases, or solutions, their thermal properties analysis is of fundamental importance. With new polymers and their composites invented every day, novel temperature or thermal measuring technologies, as well as their hyphenated uses, have advanced in recent years. In order to encourage the discussion in a wider scope and a more interdisciplinary prospect, this issue includes mechanical or rheological properties that are strongly temperature-dependent in the definition of thermal properties. The success of thermal analysis hinges not only on advanced techniques, but also on a large database scale and exquisite data analysis skills. Skills such as finding the modes or patterns in multidimensional mass data may be revolutionized by recent Artificial Intelligence advancements. This Special Issue will serve as a platform for global experts to gather thermal data of various polymers, as well as new thermal measuring technologies and according to data-mining algorithms. Perspectives regarding their application feasibility are also warmly welcome.

Dr. Yuan Zhu
Dr. Guimei Zhu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • polymers/polymer composites
  • thermal transport properties
  • phase transitions
  • thermomechanical properties
  • mechanocaloric properties
  • rheological properties
  • DSC/TG/DMA analysis
  • IR/X-ray thermography
  • hyphenated measurements

Published Papers (2 papers)

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Research

17 pages, 4120 KiB  
Article
Pyrolysis Kinetics Analysis and Prediction for Carbon Fiber-Reinforced Epoxy Composites
by
Pei Xiao
,
Jingyi Zhang
,
Han Li
,
Haolei Mou
,
Zhenyu Feng
and
Jiang Xie
Polymers 2023, 15(23), 4533; https://doi.org/10.3390/polym15234533 - 25 Nov 2023
Viewed by 227
Abstract
Carbon fiber-reinforced epoxy resin composites have poor high temperature resistance and are prone to thermal damage during service in the aerospace field. The purpose of this study was to evaluate the thermal decomposition (pyrolysis) characteristics of carbon fiber-reinforced epoxy composites and reasonably predict [...] Read more.
Carbon fiber-reinforced epoxy resin composites have poor high temperature resistance and are prone to thermal damage during service in the aerospace field. The purpose of this study was to evaluate the thermal decomposition (pyrolysis) characteristics of carbon fiber-reinforced epoxy composites and reasonably predict their thermal decomposition under arbitrary temperature conditions. The kinetic analysis was conducted on the thermal decomposition of carbon fiber-reinforced epoxy resin composites (USN15000/9A16/RC33, supplied by Weihai GuangWei Composites Co., Ltd. Weihai City, Shandong Province, China) under a nitrogen environment, and an improved model of pyrolysis prediction suitable for the arbitrary temperature program was developed in this work. The results showed that the carbon fiber-reinforced epoxy composites begin to degrade at about 500 K, and the peak value of the weight loss rate at the respective heating rate appears in the range of 650 K to 750 K. A single-step reaction can characterize the thermal decomposition of carbon fiber-reinforced epoxy composites in a nitrogen atmosphere, and a wide variety of isoconversional approaches can be used for the calculation of the kinetic parameters. The proposed model of pyrolysis prediction can avoid numerous limitations of temperature integration, and it shows good prediction accuracy by reducing the temperature rise between sampling points. This study provides a reference for the kinetic analysis and pyrolysis prediction of carbon fiber-reinforced epoxy composites. Full article
(This article belongs to the Special Issue Thermal Properties Analysis of Polymers)
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14 pages, 7207 KiB  
Article
Oriented Three-Dimensional Skeletons Assembled by Si3N4 Nanowires/AlN Particles as Fillers for Improving Thermal Conductivity of Epoxy Composites
by
Baokai Wang
,
Shiqin Wan
,
Mengyang Niu
,
Mengyi Li
,
Chang Yu
,
Zheng Zhao
,
Weiwei Xuan
,
Ming Yue
,
Wenbin Cao
and
Qi Wang
Polymers 2023, 15(22), 4429; https://doi.org/10.3390/polym15224429 - 16 Nov 2023
Viewed by 313
Abstract
With the miniaturization of current electronic products, ceramic/polymer composites with excellent thermal conductivity have become of increasing interest. Traditionally, higher filler fractions are required to obtain a high thermal conductivity, but this leads to a decrease in the mechanical properties of the composites [...] Read more.
With the miniaturization of current electronic products, ceramic/polymer composites with excellent thermal conductivity have become of increasing interest. Traditionally, higher filler fractions are required to obtain a high thermal conductivity, but this leads to a decrease in the mechanical properties of the composites and increases the cost. In this study, silicon nitride nanowires (Si3N4NWs) with high aspect ratios were successfully prepared by a modified carbothermal reduction method, which was further combined with AlN particles to prepare the epoxy-based composites. The results showed that the Si3N4NWs were beneficial for constructing a continuous thermal conductive pathway as a connecting bridge. On this basis, an aligned three-dimensional skeleton was constructed by the ice template method, which further favored improving the thermal conductivity of the composites. When the mass fraction of Si3N4NWs added was 1.5 wt% and the mass fraction of AlN was 65 wt%, the composites prepared by ice templates reached a thermal conductivity of 1.64 W·m−1·K−1, which was ~ 720% of the thermal conductivity of the pure EP (0.2 W·m−1·K−1). The enhancement effect of Si3N4NWs and directional filler skeletons on the composite thermal conductivity were further demonstrated through the actual heat transfer process and finite element simulations. Furthermore, the thermal stability and mechanical properties of the composites were also improved by the introduction of Si3N4NWs, suggesting that prepared composites exhibit broad prospects in the field of thermal management. Full article
(This article belongs to the Special Issue Thermal Properties Analysis of Polymers)
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