Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.7
3.4
Journals
Coatings
Special Issues
Thermal and Mechanical Properties of Polymer Based Materials and Adhesives
share announcement

Thermal and Mechanical Properties of Polymer Based Materials and Adhesives

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Functional Polymer Coatings and Films".

Deadline for manuscript submissions: 20 August 2024 | Viewed by 12703

Special Issue Editors

Prof. Dr. Yuanlie Yu

E-Mail Website
Guest Editor
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: hexagonal boron nitride based materials; thermally conductive composites; lubrication materials and performance
Dr. Li Qiang

E-Mail Website
Guest Editor
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: carbon based materials; polymer based composite materials; solid lubricant material

Special Issue Information

Dear Colleagues,

The electronic devices are developing towards high frequency, multifunction, miniaturization, and high integration since the rapid development of fifth generation (5G) wireless communication technology. This leads to a high requirement for the packaging and protection materials with mutual properties, such as high thermal conductivity, good mechanical strength, low dielectric constant and loss, etc. Polymer-based materials and adhesives have attracted great attention for 5G device packaging and protection because of their low cost, easy processing, low dielectric constant and loss, etc. However, the low thermal conductivity, which is generally lower than 0.5 W/(m·K), greatly limits their practical applications. Currently, the method of adding high thermally conductive fillers to improve the thermal conductivity of polymer-based materials and adhesives has been widely used since its high efficiency.

The addition of thermally conductive fillers (nanoparticles, nanotubes, nanowires, nanosheets, and 3D structures) may also affect the mechanical and stable performance of polymer-based materials and adhesives. Therefore, it is significant to investigate the thermally conductive and mechanical performance of polymer-based materials and adhesives after addition of thermally conductive fillers.

This scope of this Special Issue will serve as a forum for papers in the following concepts:

  • Recent developments in thermally conductive polymer-based materials and adhesives.
  • Novel thermal conductivity or mechanical strength enhancement fillers for polymer-based materials and adhesives.
  • New methods or process for polymer-based materials and adhesives with high thermal conductivity or mechanical strength.
  • The thermally conductive and mechanical properties of different polymer-based composites.
  • Theoretical and experimental investigation in thermally conductive mechanisms of polymer-based materials and adhesives.
  • Computer modeling, simulation to predict the thermal conductivity, mechanical strength and stability of polymer-based materials and adhesives used under different conditions.

Prof. Dr. Yuanlie Yu
Dr. Li Qiang
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. Coatings is an international peer-reviewed open access monthly 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 2600 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

  • polymer based materials and adhesives
  • composites
  • thermal conductivity
  • thermally conductive mechanism
  • mechanical performance

Published Papers (8 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

11 pages, 5217 KiB  
Article
Influence of Organic Coating Thickness on Electrochemical Impedance Spectroscopy Response
by Amanda Suellen de Paula, Barbara Mitraud Aroeira, Lucas Henrique de Oliveira Souza, Alisson Cristian da Cruz, Michele Fedel, Brunela Pereira da Silva and Fernando Cotting
Coatings 2024, 14(3), 285; https://doi.org/10.3390/coatings14030285 - 27 Feb 2024
Viewed by 894
Abstract
Electrochemical Impedance Spectroscopy (EIS) is a non-destructive and powerful technique for characterizing corrosion systems, allowing for the evaluation of surface reaction mechanisms, mass transport, kinetic evolution, and corrosion levels of materials. This study aims to analyze the progression of corrosion using EIS, with [...] Read more.
Electrochemical Impedance Spectroscopy (EIS) is a non-destructive and powerful technique for characterizing corrosion systems, allowing for the evaluation of surface reaction mechanisms, mass transport, kinetic evolution, and corrosion levels of materials. This study aims to analyze the progression of corrosion using EIS, with a focus on the influence of organic coating thickness. For this purpose, layers of high-purity epoxy paint were applied to carbon steel plates with thicknesses of 50 µm, 80 µm, and 100 µm. During the research, a direct correlation was observed between coating thickness and corrosion resistance, emphasizing the importance of identifying the optimal thickness for each type of coating. Additionally, it was found that thicker coatings may experience electrode penetration due to the tensions generated during deposition, resulting in cracks between the layers, while thinner coatings allow electrolyte penetration as they do not provide adequate protection to the base steel. Therefore, the 80 µm thickness demonstrated greater resistance to corrosion compared to the other tested thicknesses. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Graphical abstract

10 pages, 4628 KiB  
Article
Comparative Study of Resin and Silane Coupling Agents Coating Treatments on Bonding Strength Improvement of Titanium and Carbon Fiber Composites
by Shihao Zuo, Lin Wang, Jinheng Zhang, Guangming Yang, Yang Xu, Yunsen Hu, Fei Cheng and Xiaozhi Hu
Coatings 2023, 13(5), 903; https://doi.org/10.3390/coatings13050903 - 11 May 2023
Cited by 6 | Viewed by 1739
Abstract
In this study, anodizing treatment was utilized to etch titanium (Ti) substrates’ surface to prefabricate nano-cavities. Resin pre-coating (RPC) and three silane coupling agents’ coating (CAC) techniques were further applied to porous Ti substrates surface to compare the reinforcement effect of adhesive bonding [...] Read more.
In this study, anodizing treatment was utilized to etch titanium (Ti) substrates’ surface to prefabricate nano-cavities. Resin pre-coating (RPC) and three silane coupling agents’ coating (CAC) techniques were further applied to porous Ti substrates surface to compare the reinforcement effect of adhesive bonding strength. SEM images show that nano-cavities have been prepared to create a greater contact area and vertical volume on Ti substrate surface, fully covered by resin coatings via RPC. A higher surface roughness and better surface wetting are also obtained by the testing results of atomic force microscope and contact angles. Single lap shear tests results indicate that specimens with “anodizing + RPC” treatment yield the best average shear strength of 20.73 MPa, increased by 31.7% compared to anodizing base strength and at least 63.0% higher than silane KH-550/560/792-coated specimens. A dominant cohesive failure and fiber-tearing on CFRP’s shallow surface, instead of adhesive debonding failure, are shown in the appearances of damaged specimens, proving that the RPC technique has a more effective bonding strength reinforcement in titanium and carbon fiber-reinforced polymer (Ti-CFRP) composites’ toughening. Thus, the simple RPC technique can be regarded as a new-type alternative to adhesive joint toughening to manufacture high-performance composites for aerospace applications. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Figure 1

12 pages, 4959 KiB  
Article
The Study of Surface Structure and the Tribological Property of DLC-Modified NBR Elastomers Using DC-MS
by Chuang Wang, Can Xu, Zhiyu Wu and Feng Wen
Coatings 2023, 13(2), 468; https://doi.org/10.3390/coatings13020468 - 18 Feb 2023
Cited by 3 | Viewed by 1178
Abstract
The DLC film was prepared on a nitrile rubber (NBR) elastomer by DC magnetron sputtering (DC-MS), and the sp3 ratio of the DLC film was adjusted by changing the negative bias voltage applied to the substrate. The microstructure, composition, and tribological properties [...] Read more.
The DLC film was prepared on a nitrile rubber (NBR) elastomer by DC magnetron sputtering (DC-MS), and the sp3 ratio of the DLC film was adjusted by changing the negative bias voltage applied to the substrate. The microstructure, composition, and tribological properties of the DLC films deposited on NBR substrates were systematically investigated. The results reveal that the DLC film on the NBR surface can protect the NBR and reduce the surface roughness of the NBR. While the bias voltage ranges from 0 V to −150 V, the content of sp3 increases with an increase in the negative bias voltage. The viscoelasticity and roughness of the NBR substrate will greatly affect the DLC film’s adhesion strength and tribological behavior. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Figure 1

14 pages, 6317 KiB  
Article
Preparation and Heat Dissipation Performance of Vertical Graphene Nanosheets/Carbon Fibers Composite Film
by Mengting Yan, Weihong Jia, Yawen Yang, Qi Zhou, Limin Ma and Jinqing Wang
Coatings 2023, 13(2), 407; https://doi.org/10.3390/coatings13020407 - 10 Feb 2023
Cited by 1 | Viewed by 1491
Abstract
High-efficient heat dissipation materials are urgently required in advanced electronic packaging technology because effectively releasing the internal heat flow density of electronic devices is a key factor during their operation. In this work, a novel vertical graphene nanosheets/carbon fibers (VGNs/CF) composite film, with [...] Read more.
High-efficient heat dissipation materials are urgently required in advanced electronic packaging technology because effectively releasing the internal heat flow density of electronic devices is a key factor during their operation. In this work, a novel vertical graphene nanosheets/carbon fibers (VGNs/CF) composite film, with a vertically oriented structure and excellent heat dissipation properties, is fabricated on the stainless steel substrate by a facile thermochemical growth method. The preparation of composite film is green, safe, and highly efficient. CF is used as a thermally conductive filler to provide thermal conductivity channels for VGNs, and both of them construct a continuous thermally conductive network. The through-plane thermal conductivity of the VGNs/CF composite film could reach 17.7 W/(m·K), and the addition of CF significantly improved the heat dissipation performance of the composite film compared with the pure VGNs film (13.9 W/(m·K)). Conclusively, the simple preparation method and outstanding thermal conductivity capacity of the VGNs/CF composite film are expected to meet the application requirements of the electronics industry. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Figure 1

13 pages, 4891 KiB  
Article
A Simple and Effective Method to Adjust the Structure and Performance of DLC Films on Polymethyl Methacrylate(PMMA) Substrate
by Yinzhong Bu, Kaihuan Yu, Bin Zhang, Bin Kuang and Li Qiang
Coatings 2023, 13(2), 320; https://doi.org/10.3390/coatings13020320 - 01 Feb 2023
Viewed by 1214
Abstract
DLC (diamond-like carbon) films were prepared on Ti/PMMA(polymethyl methacrylate) under the different bias; the principal purpose of this study is to explore structural differences of films on Ti/PMMA with and without conductive material, and to further clarify the role of the conductive Ti [...] Read more.
DLC (diamond-like carbon) films were prepared on Ti/PMMA(polymethyl methacrylate) under the different bias; the principal purpose of this study is to explore structural differences of films on Ti/PMMA with and without conductive material, and to further clarify the role of the conductive Ti interlayer in influencing the deposition mechanism. The results indicate that the films deposited on Ti/PMMA with conductive material exhibit uniform DLC structure and mechanical hardness when the bias voltage is ≥550 V. Furthermore, the deposited DLC does not change the wettability of PMMA, while the addition of the Ti interlayer virtually increases the risk of peeling off of the film. The results of the tribological study demonstrate the films on Ti/PMMA with conductive material have better tribological properties than those without conductive adhesive. This research work can provide basic theoretical guidance for depositing uniform DLC films on PMMA and even on all non-conductive substrates. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Graphical abstract

10 pages, 8999 KiB  
Article
Hydrothermal Preparation of TiO2/Graphite Nanosheets Composites and Its Effect on Electrothermal Behavior
by Chunyu Wang, Weiyao Tian, Sibo Kang, Bo Zhong, Chunlin Qin and Hongyang Wang
Coatings 2023, 13(2), 226; https://doi.org/10.3390/coatings13020226 - 18 Jan 2023
Cited by 1 | Viewed by 1377
Abstract
Nowadays, carbon materials are supposed to replace the resistance wire made of metal alloy to be the next generation of heat-generating materials due to their excellent electrical conductivity and corrosion resistance. In this study, TiO2/graphite nanosheets (GNs) composite was prepared by [...] Read more.
Nowadays, carbon materials are supposed to replace the resistance wire made of metal alloy to be the next generation of heat-generating materials due to their excellent electrical conductivity and corrosion resistance. In this study, TiO2/graphite nanosheets (GNs) composite was prepared by chemical exfoliation and hydrothermal methods. XRD, FTIR, and Raman spectra confirm TiO2 particles are on the surface of GNs. SEM photographs show TiO2 nanoparticles covering the surface of the GNs uniformly. We used TiO2/GNs and sodium silicate to produce the electrothermal film coated on the glass. As compared to raw GNs, the heating rate and maximum temperature have greatly improved. In order to find the reasons for the improvement, the BET and zeta potential of TiO2/GNs were tested, and we found that the enhancement of the surface area and the dispersion to the composite by TiO2 particles and sodium silicate make the distribution of GNs more uniform. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Graphical abstract

15 pages, 3400 KiB  
Article
Thermal Tunable Tribological Behavior of Shape Memory Biphenyl Epoxy Resin
by Jing Yang, Pengrui Cao, Ketian Gao, Chang Ding, Shoubing Chen, Xinrui Zhang, Tingmei Wang, Qihua Wang and Yaoming Zhang
Coatings 2023, 13(1), 166; https://doi.org/10.3390/coatings13010166 - 12 Jan 2023
Cited by 4 | Viewed by 1499
Abstract
Although polymer-based self-lubricating materials have rapidly developed recently, intelligent lubricating materials with self-adaptable lubrication with external conditions changing are highly demanded, especially for harsh conditions. Herein, a shape memory epoxy resin based on the biphenyl units (BPEP) with tunable tribological behavior was systematically [...] Read more.
Although polymer-based self-lubricating materials have rapidly developed recently, intelligent lubricating materials with self-adaptable lubrication with external conditions changing are highly demanded, especially for harsh conditions. Herein, a shape memory epoxy resin based on the biphenyl units (BPEP) with tunable tribological behavior was systematically studied. X-ray diffraction (XRD), field emission scanning electron microscope (SEM), laser confocal three-dimensional profiler, and optical microscope were applied to analyze the friction and wear mechanism. Due to the presence of the specific biphenyl structural units, which could be performed a switching phase between crystalline and amorphous, that allows the self-assembly of the polymer chain under π–π interaction. As a result, the improving mechanical properties enable the BPEP to perform outstanding self-lubricating in a wide temperature range, and the friction coefficient (COF) can be tuned in a wide range of 0.10~0.175 by adjusting the temperature. The shape memory effect of the polymer refers to modulus changing and heat conversion during the shape morphing, and a thermal tunable tribological was observed based on the physicochemical properties varying of polymer with temperature changing. The shape memory effect of BPEPs drives the wear self-compensation so that a low wear rate (6.94 × 10−5 mm3 N−1 m−1) at 110 °C was obtained. The superb lubricating properties of this BPEP could broaden the application scope of shape memory polymers in the field of intelligent lubricating materials, and it is expected to guide future studies on the thermal regulating of tribological behavior. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Graphical abstract

Review

Jump to: Research

26 pages, 24284 KiB  
Review
Polymer@SiO2 Core–Shell Composite Particles: Preparation and Application
by Na Wang, Hongbin Zhou, Junfang Ren, Gui Gao, Gengrui Zhao, Yawen Yang, Honggang Wang and Jinqing Wang
Coatings 2023, 13(2), 334; https://doi.org/10.3390/coatings13020334 - 01 Feb 2023
Viewed by 2622
Abstract
In recent years, core–shell composite particles with organic polymer as the core and inorganic SiO2 as the shell have attracted widespread attention and prompted robust scientific endeavors. The encapsulation of SiO2 can endow the polymer core with a variety of important [...] Read more.
In recent years, core–shell composite particles with organic polymer as the core and inorganic SiO2 as the shell have attracted widespread attention and prompted robust scientific endeavors. The encapsulation of SiO2 can endow the polymer core with a variety of important properties, and is of great significance for the synthesis of multi–functional materials, having favorable application prospects in coating, polishing, medical, optical, magnetic, lubrication and other fields. In this paper, the recent advances in the preparation of core–shell polymer@SiO2 composite particles are reviewed. From the perspective of interface bonding mechanisms between the core and the shell, this paper mainly focused on the following five aspects: Pickering stabilization, acid–base interaction, charge interaction, bridging of coupling agent, hydrogen bonding, and other actions. Additionally, applications of core–shell polymer@SiO2 particles are also discussed. It is expected that this article can provide scientific guidance for the preparation of polymer@SiO2 core–shell particles, further enriching their species and broadening their applications. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Polymer Based Materials and Adhesives)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-8
Back to TopTop