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Polymers
Special Issues
High-Temperature-Resistant Polymers and Their Advanced Composites
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High-Temperature-Resistant Polymers and Their Advanced Composites

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

Deadline for manuscript submissions: 15 February 2025 | Viewed by 4792

Special Issue Editors

Dr. Xulin Yang

E-Mail Website
Guest Editor
School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
Interests: phthalonitrile; poly arylene ether nitrile; benzoxazine; polymer composites; polymer nanocomposites; fiber-reinforced polymer composites; high-temperature-resistant polymer; high-performance polymer composite; thermal stabilities; flame retardancy; mechanical properties; polymer foam
Dr. Pan Wang

E-Mail Website
Guest Editor
School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
Interests: poly arylene ether nitrile; polymer composites; polymer nanocomposites; optical polymer composites; high-temperature-resistant polymer; high-performance polymer composite; thermal stabilities; polymer electronic spinning fibrous membrane; polymer sensor

Special Issue Information

Dear Colleagues,

We live in the Polymer Age, where polymer materials have become ubiquitous in modern industry and daily life, especially high-temperature-resistant polymers used in extremely harsh environments, including at elevated temperatures, under high mechanical stress, and in the presence of flames or solvents. For example, fiber-reinforced high-temperature-resistant polymer composites are lightweight structural materials for aircraft parts, while high-temperature-resistant polymer films are indispensable in flexible optoelectronic devices. These polymers and composites play irreplaceable roles in various fields, including aerospace, electronics, automobile, and the military.

This Special Issue provides a platform for researchers to present new research and developments focused on high-temperature-resistant polymers and advanced composites. We welcome submissions that explore the latest advancements and cutting-edge technologies in these fields. Potential topics include but are not restricted to the following:

  • Molecular design of high-temperature-resistant polymer;
  • Synthesis and characterization of high-temperature-resistant polymer;
  • Processing or modification of high-temperature-resistant polymer;
  • Applications of high-temperature-resistant polymer and their composites;
  • Rational design of high-temperature-resistant polymer composites;
  • Multifunctional composites based on high-temperature-resistant polymers;
  • Service properties of high-temperature-resistant polymers and their composites;
  • Failure mechanisms of high-temperature-resistant polymers and their composites;
  • Films, fibers, coatings, membranes, laminates, foams, plates, pipes, or formed parts based on high-temperature-resistant polymers.

Dr. Xulin Yang
Dr. Pan Wang
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

  • high-temperature-resistant polymer
  • high-performance polymer composite
  • high glass transition temperature
  • high char yield
  • thermal stabilities
  • mechanical properties
  • flame retardancy
  • special engineering plastics
  • Polyimide (PI)
  • Polyetherimide (PEI)
  • Poly ether ketone (PEK)
  • Poly etherether ketone (PEEK)
  • Poly phenyl sulfone (PPSU)
  • Polyvinylidene fluoride (PVDF)
  • Poly arylene ether nitrile (PEN)
  • Poly phenylene sulfide (PPS)
  • Polyamide (PA) resin
  • Phthalonitrile (PN) resin
  • Benzoxazine (BZ) resin
  • Bismaleimide (BMI) resin
  • phenolic resin
  • epoxy resin

Published Papers (4 papers)

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Research

15 pages, 4742 KiB  
Article
Synthesis and Properties of Semicrystalline Poly(ether nitrile ketone) Copolymers
by Jiang Zhu, Chao Mo, Lifen Tong and Xiaobo Liu
Polymers 2024, 16(2), 251; https://doi.org/10.3390/polym16020251 - 16 Jan 2024
Viewed by 677
Abstract
As a high-performance engineering plastic, polyarylene ether nitrile (PEN) is widely used in many fields. The presence of cyano groups of PEN ensures its good adhesion to other substrates, but the inherent low crystallinity of PEN limits its application. In this work, the [...] Read more.
As a high-performance engineering plastic, polyarylene ether nitrile (PEN) is widely used in many fields. The presence of cyano groups of PEN ensures its good adhesion to other substrates, but the inherent low crystallinity of PEN limits its application. In this work, the poly(aryl ether ketone) segment was introduced into PEN via copolymerization using both 2,6-Dichlorobenzonitrile and 4,4′-Difluorobenzophenone as the starting reagents to prepare poly (ether nitrile ketone) (BP-PENK). The effect of composition and thermal treatment on the crystallization behavior and properties of poly (ether nitrile ketone) were systematically studied. It was found that when the content of DFBP is 30%, the copolymer BP-PENK30 had the best mechanical properties, with a tensile strength of 109.9 MPa and an elongation at a break value of 45.2%. After thermal treatment at 280 °C for 3 h, BP-PENK30 had the highest crystallinity with a melting point of 306.71 °C, a melting enthalpy of 5.02 J/g, and crystallinity of 11.83%. Moreover, with the increase in crystallinity, the dielectric constant and energy density increased after thermal treatment. Therefore, the introduction of poly(aryl ether ketone) chain segments and thermal treatment can effectively improve the crystallization and the comprehensive properties of PEN. Full article
(This article belongs to the Special Issue High-Temperature-Resistant Polymers and Their Advanced Composites)
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13 pages, 8557 KiB  
Article
Analysis of Paint Properties According to Expandable Graphite and Fire Simulation Research on Firewall Penetration Part
by Seonghun Yu, Jonghyuk Lee, Donghyun Yeo, Junhee Lee, Jinseok Bae and Jeehyun Sim
Polymers 2024, 16(1), 98; https://doi.org/10.3390/polym16010098 - 28 Dec 2023
Viewed by 753
Abstract
In this research, we attempted to develop paints that can be applied to various fields such as high-rise building structures and electric vehicle batteries. To minimize damage to life and property in the event of a fire, we attempted to manufacture a highly [...] Read more.
In this research, we attempted to develop paints that can be applied to various fields such as high-rise building structures and electric vehicle batteries. To minimize damage to life and property in the event of a fire, we attempted to manufacture a highly elastic paint material that can block flames and control smoke spread, and that has additional sound insulation and waterproofing functions. A high-elasticity paint was manufactured by mixing a flame-retardant polyurethane dispersion (PUD) with an acrylic emulsion binder and adding different mass fractions of expandable graphite (EG). The thermal, physical, and morphological properties of the prepared mixed paint were analyzed. The thermal properties of the mixed paint were analyzed and intended to be used as input data (heat transfer coefficient, specific heat capacity) for fire simulation. Output data were used to predict how much the temperature would change depending on the time of fire occurrence. The reason for conducting simulations on the fire stability of paint materials is that the fire stability of paints can be predicted without conducting fire tests. Two hours after the fire broke out, the thermal temperature distribution was analyzed. The temperature distribution was compared with and without mixed paint. Two hours after a fire broke out in a virtual space, it was found that when the mixed paint was applied, the surrounding temperature of the penetration area was lower than when the mixed paint was not applied. Development costs for developing excellent paints can be reduced. Since fire safety can be predicted without actually conducting tests, the time required for product development can be reduced. We are confident that this is a very groundbreaking technology because it allows fire safety simulations for developed products to be conducted in a virtual space by creating an environment similar to actual fire test standards. Full article
(This article belongs to the Special Issue High-Temperature-Resistant Polymers and Their Advanced Composites)
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24 pages, 16625 KiB  
Article
Self-Sustained Chaotic Jumping of Liquid Crystal Elastomer Balloon under Steady Illumination
by Xin Sun, Yuntong Dai, Kai Li and Peibao Xu
Polymers 2023, 15(24), 4651; https://doi.org/10.3390/polym15244651 - 08 Dec 2023
Viewed by 668
Abstract
Self-sustained chaotic jumping systems composed of active materials are characterized by their ability to maintain motion through drawing energy from the steady external environment, holding significant promise in actuators, medical devices, biomimetic robots, and other fields. In this paper, an innovative light-powered self-sustained [...] Read more.
Self-sustained chaotic jumping systems composed of active materials are characterized by their ability to maintain motion through drawing energy from the steady external environment, holding significant promise in actuators, medical devices, biomimetic robots, and other fields. In this paper, an innovative light-powered self-sustained chaotic jumping system is proposed, which comprises a liquid crystal elastomer (LCE) balloon and an elastic substrate. The corresponding theoretical model is developed by combining the dynamic constitutive model of an LCE with Hertz contact theory. Under steady illumination, the stationary LCE balloon experiences contraction and expansion, and through the work of contact expansion between LCE balloon and elastic substrate, it ultimately jumps up from the elastic substrate, achieving self-sustained jumping. Numerical calculations reveal that the LCE balloon exhibits periodic jumping and chaotic jumping under steady illumination. Moreover, we reveal the mechanism underlying self-sustained periodic jumping of the balloon in which the damping dissipation is compensated through balloon contact with the elastic substrate, as well as the mechanism involved behind self-sustained chaotic jumping. Furthermore, we provide insights into the effects of system parameters on the self-sustained jumping behaviors. The emphasis in this study is on the self-sustained chaotic jumping system, and the variation of the balloon jumping modes with parameters is illustrated through bifurcation diagrams. This work deepens the understanding of chaotic motion, contributes to the research of motion behavior control of smart materials, and provides ideas for the bionic design of chaotic vibrators and chaotic jumping robots. Full article
(This article belongs to the Special Issue High-Temperature-Resistant Polymers and Their Advanced Composites)
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16 pages, 4993 KiB  
Article
Understanding the Thermal Degradation Mechanism of High-Temperature-Resistant Phthalonitrile Foam at Macroscopic and Molecular Levels
by Xulin Yang, Yi Li, Wenwu Lei, Zhongxiang Bai, Yingqing Zhan, Ying Li, Kui Li, Pan Wang, Wei Feng and Qi Liu
Polymers 2023, 15(19), 3947; https://doi.org/10.3390/polym15193947 - 29 Sep 2023
Cited by 2 | Viewed by 1142
Abstract
Polymer foam, a special form of polymer, usually demonstrates some unexpected properties that rarely prevail in the bulky polymer. Studying the thermal degradation behavior of a specific polymer foam is important for its rational design, quick identification, objective evaluation, and industrial application. The [...] Read more.
Polymer foam, a special form of polymer, usually demonstrates some unexpected properties that rarely prevail in the bulky polymer. Studying the thermal degradation behavior of a specific polymer foam is important for its rational design, quick identification, objective evaluation, and industrial application. The present study aimed to discover the thermal degradation mechanism of high-temperature-resistant phthalonitrile (PN) foam under an inert gas atmosphere. The macroscopic thermal decomposition of PN foam was carried out at the cost of size/weight loss, resulting in an increasing number of open cells with pyrolyzation debris. Using the TGA/DTG/FTIR/MS technique, it was found that PN foam involves a three-stage thermal degradation mechanism: (I) releasing gases such as H2O, CO2, and NH3 generated from azo-containing intermediate decomposition and these trapped in the closed cells during the foaming process; (II) backbone decomposition from C-N, C-O, and C-C cleavage in the PN aliphatic chain with the generation of H2O, CO2, NH3, CO, CH4, RNH2, HCN, and aromatic gases; and (III) carbonization into a final N-hybrid graphite. The thermal degradation of PN foam was different from that of bulky PN resin. During the entire pyrolysis of PN foam, there was a gas superposition phenomenon since the release of the decomposition volatile was retarded by the closed cells in the PN foam. This research will contribute to the general understanding of the thermal degradation behavior of PN foam at the macroscopic and molecular levels and provide a reference for the identification, determination, and design of PN material. Full article
(This article belongs to the Special Issue High-Temperature-Resistant Polymers and Their Advanced Composites)
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