Polymer Testing最新文献_第10页

Evaluation of polymer viscoelasticity by integrated micro-indentation test with optical flow algorithm 基于光流算法的集成微压痕测试评价聚合物粘弹性

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-28 DOI: 10.1016/j.polymertesting.2025.108750

Giyeol Han , Yeongmin Yoon , Hyungyil Lee

{"title":"Evaluation of polymer viscoelasticity by integrated micro-indentation test with optical flow algorithm","authors":"Giyeol Han , Yeongmin Yoon , Hyungyil Lee","doi":"10.1016/j.polymertesting.2025.108750","DOIUrl":"10.1016/j.polymertesting.2025.108750","url":null,"abstract":"<div><div>This study aims to directly evaluate the viscoelastic (creep) parameters of polymer materials by integrating a micro-indentation test with an optical flow (OF) algorithm and an embedded center of dilatation (ECD) model. After indentation, the in-plane displacement field on the specimen surface is measured over time using the OF algorithm, thereby capturing the recovery behavior of the indentation imprint. Subsequently, the creep strain evolution curve over time is obtained through displacement and spatial differentiation. The ECD model is employed to estimate the initial residual stress induced by indentation process without resorting to complex inverse analysis. The reliability of estimated surface residual stress was validated through FEA. A time hardening model is then used to derive the creep strain-time relationship. Using the initial residual stress and the creep strain curve obtained from indentation, the time hardening creep parameters are determined. The experimental tests on polymethyl methacrylate (PMMA) and polycarbonate (PC) have demonstrated that the proposed method yields creep parameters within an approximate 5% error margin relative to conventional tensile creep tests.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"145 ","pages":"Article 108750"},"PeriodicalIF":5.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of microplastics in the aquatic environment, or in the presence of algae Chlorella sp., by comparison of biophotonic methods 通过生物光子学方法的比较，鉴定水生环境中或存在小球藻的微塑料

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-28 DOI: 10.1016/j.polymertesting.2025.108749

Alzbeta Marcek Chorvatova , Maria Angelica Garcia Bucio , Zuzana Jurasekova , Eva Noskovicova , Limpat Nulandaya , Dmitrij Bondarev , Dusan Chorvat Jr. , Pavol Miskovsky

{"title":"Identification of microplastics in the aquatic environment, or in the presence of algae Chlorella sp., by comparison of biophotonic methods","authors":"Alzbeta Marcek Chorvatova , Maria Angelica Garcia Bucio , Zuzana Jurasekova , Eva Noskovicova , Limpat Nulandaya , Dmitrij Bondarev , Dusan Chorvat Jr. , Pavol Miskovsky","doi":"10.1016/j.polymertesting.2025.108749","DOIUrl":"10.1016/j.polymertesting.2025.108749","url":null,"abstract":"<div><div>Microplastics (MPs) are emerging pollutants in our environment. However, their identification under real environmental conditions remains challenging, particularly in the case of MPs found in water sources, where other organic materials, such as algae, are present. Custom-prepared MPs (PET, PS, PLA) - commonly found in the aquatic environment – were tested in the dry state, in the water colloidal solutions, and/or in the presence of algae <em>Chlorella</em> sp. A multi-method approach, comparing different biophotonic methods, including FTIR, Raman (conventional or Surface Enhanced Raman Spectroscopy (SERS)) and spectrally-resolved confocal fluorescence microscopy methods were employed. We tested the capabilities of the applied methods to detect the presence of MPs in complex environmental conditions and thus the possibilities for their use for an <em>in-situ effective</em> monitoring.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"145 ","pages":"Article 108749"},"PeriodicalIF":5.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fatigue life prediction of polymer matrix composites containing initial delamination using thermography 热成像技术预测含初始脱层聚合物基复合材料疲劳寿命

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-27 DOI: 10.1016/j.polymertesting.2025.108751

Amir Mohammad Feizi, Fathollah Taheri-Behrooz

{"title":"Fatigue life prediction of polymer matrix composites containing initial delamination using thermography","authors":"Amir Mohammad Feizi, Fathollah Taheri-Behrooz","doi":"10.1016/j.polymertesting.2025.108751","DOIUrl":"10.1016/j.polymertesting.2025.108751","url":null,"abstract":"<div><div>This study investigates the effect of initial delamination on the fatigue behavior and lifespan of composite laminates made of woven glass fabric and epoxy resin. The primary objective is to evaluate the influence of initial delamination on parameters such as fatigue limit, stiffness degradation, and temperature variations using infrared thermography. To investigate the effect of delamination, the specimens were fabricated in three categories: standard, symmetric delamination, and asymmetric delamination. Analysis of thermal data and mechanical results revealed that initial delamination reduced approximately 76.8 % in fatigue life and 15.8 % in fatigue limit. Additionally, specimens with initial delamination exhibited faster stiffness degradation and higher temperature rise, indicating accelerated crack propagation and greater stress concentration. A fatigue life prediction model based on entropy generation and thermal data was developed for both standard and delaminated specimens, demonstrating satisfactory accuracy. The findings of this research can enhance the design and performance of composite structures by improving safety and operational efficiency through non-destructive monitoring and fatigue life prediction.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"145 ","pages":"Article 108751"},"PeriodicalIF":5.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of covalent adaptable networks Based on disulfide exchange through broadband dielectric spectroscopy 宽带介电光谱分析基于二硫交换的共价自适应网络

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-26 DOI: 10.1016/j.polymertesting.2025.108746

B. Pascual-Jose , R. Teruel-Juanes , S. de la Flor , A. Serra , A. Ribes-Greus

{"title":"Analysis of covalent adaptable networks Based on disulfide exchange through broadband dielectric spectroscopy","authors":"B. Pascual-Jose , R. Teruel-Juanes , S. de la Flor , A. Serra , A. Ribes-Greus","doi":"10.1016/j.polymertesting.2025.108746","DOIUrl":"10.1016/j.polymertesting.2025.108746","url":null,"abstract":"<div><div>To study the nature and the cooperativity of the disulfide exchange mechanism in covalent adaptable networks, the dielectric and conductive properties of three membranes obtained by curing diglycidyl ether of bisphenol A (DGEBA) with hexamethylenediamine (HMDA), cystamine (CYS), or a mixture of both diamines in the same proportion were studied. Significant differences in the dielectric relaxation spectra of the three membranes were observed. In the low-temperature region, the dielectric spectra displayed two non-cooperative dielectric relaxations (γ and β). In the DGEBA/HMDA-CYS membrane, its relaxation function and activation energy are between those corresponding to the DGEBA/HDMA and DGEBA/CYS membranes, but their relationship does not depend linearly on the composition. In the high-temperature region, a dielectric relaxation of cooperative origin related to the glass transition (α) was observed in the membrane cured with hexamethylenediamine. However, the relaxation related to the glass transition overlaps with the exchange of the disulfide bonds in the membranes with cystamine. The analysis of the electric conductivity (σ) reveals an abrupt increment that suggests a radical-mediated dissociative bond exchange reaction may be occurring. However, the analysis of the σ<sub>DC</sub> curves is indicative of an associative bond exchange reaction. The rapid formation of new associations among radicals is proposed to explain the vitrimer-like behaviour on these CYS-containing membranes.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"145 ","pages":"Article 108746"},"PeriodicalIF":5.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compression performance analysis of hexagonal and re-entrant hybrid honeycomb structures 六角形和重入式混合蜂窝结构压缩性能分析

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-26 DOI: 10.1016/j.polymertesting.2025.108745

Xiang Peng , Kaiming Zhou , Yang Han , Weiqiang Jia , Jiquan Li , Shaofei Jiang

{"title":"Compression performance analysis of hexagonal and re-entrant hybrid honeycomb structures","authors":"Xiang Peng , Kaiming Zhou , Yang Han , Weiqiang Jia , Jiquan Li , Shaofei Jiang","doi":"10.1016/j.polymertesting.2025.108745","DOIUrl":"10.1016/j.polymertesting.2025.108745","url":null,"abstract":"<div><div>The performance of honeycomb structures is closely related to the shape of the unit cell, and traditional honeycomb structures with a single design often fail to meet the diverse requirements of various applications. To address this limitation, a hybrid design strategy has been proposed. In this study, we present a novel hybrid honeycomb structure by combining the traditional hexagonal honeycomb with a re-entrant honeycomb configuration, aiming to resolve the trade-off between stiffness and energy absorption capacity. Furthermore, a dual-material hybrid honeycomb structure is designed by replacing polylactic acid (PLA) with polyurethane elastomer (TPU) at key nodes. We perform uniaxial quasi-static compression tests to investigate the compression characteristics, energy absorption properties, and repeatable loading performance of the proposed honeycomb structures. The results demonstrate that the hybrid honeycomb structure exhibits superior stiffness and energy absorption compared to the hexagonal honeycomb, the dual-material hybrid honeycomb structure shows excellent repeatable loading performance. In addition, we conducted parametric research by changing the internal angles and wall thickness of the unit. Therefore, the developed honeycomb structures are capable of meeting a wide range of application scenarios.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"145 ","pages":"Article 108745"},"PeriodicalIF":5.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crashworthiness and optimization for foam-filled multi-layer composite lattice structures 泡沫填充多层复合材料晶格结构的耐撞性及优化

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-17 DOI: 10.1016/j.polymertesting.2025.108744

Jiye Chen , Wangwang He , Hai Fang , Yong Zhuang , Zhixiong Zhang , Yufeng Zhao

{"title":"Crashworthiness and optimization for foam-filled multi-layer composite lattice structures","authors":"Jiye Chen , Wangwang He , Hai Fang , Yong Zhuang , Zhixiong Zhang , Yufeng Zhao","doi":"10.1016/j.polymertesting.2025.108744","DOIUrl":"10.1016/j.polymertesting.2025.108744","url":null,"abstract":"<div><div>Foam materials have been widely used to fill composite lattice structures to improve energy absorption and mechanical properties. In this paper, several novel types of foam-filled multi-layer composite lattice structures (FMCLSs) were proposed, and their crashworthiness analysis and multi-objective optimization were conducted. The finite element method was adopted to investigate the compressive behavior of the FMCLSs. Quasi-static compression experiments were performed on the FMCLSs manufactured using a vacuum infusion molding process (VIMP) to verify the accuracy of the finite element models. Furthermore, validated finite element models were employed to conduct parametric studies on the FMCLSs. For the FMCLS with double-layer dislocation cells or trapezoidal cells, the crush force efficiency (CFE) achieved average values of 44.86 % or 50.47 %, respectively, which were higher than those of the other types of FMCLSs. To obtain the optimal designs of the FMCLSs, metamodels and the MOPSO algorithm were utilized, with the specific energy absorption (SEA) and peak crushing force (PCF) selected as the two objectives. The optimization results demonstrated that the FMCLSs with double-layer dislocation cells and hexagonal cells had better crashworthiness than the other types of FMCLSs and could serve as effective energy absorbers. Meanwhile, with the PCF constrained to a value greater than 82 kN, the FMCLS with hexagonal cells exhibited the best crashworthiness; whereas, when the PCF was less than 82 kN, the FMCLS with double-layer dislocation cells performed the best. Additionally, the equivalent compressive modulus and compressive strength of the FMCLSs were predicted using a rule of mixtures.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"144 ","pages":"Article 108744"},"PeriodicalIF":5.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailored recycled composites: Enhancing the performance of injection moulded post-consumer polypropylene composites using Box-Behnken Design 定制回收复合材料：使用Box-Behnken设计增强注塑成型消费后聚丙烯复合材料的性能

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-15 DOI: 10.1016/j.polymertesting.2025.108743

Zahra Shahroodi , David Zidar , Vahid Momeni , Florian Arbeiter , Ivica Duretek , Nina Krempl , Gerald Berger-Weber , Clemens Holzer

{"title":"Tailored recycled composites: Enhancing the performance of injection moulded post-consumer polypropylene composites using Box-Behnken Design","authors":"Zahra Shahroodi , David Zidar , Vahid Momeni , Florian Arbeiter , Ivica Duretek , Nina Krempl , Gerald Berger-Weber , Clemens Holzer","doi":"10.1016/j.polymertesting.2025.108743","DOIUrl":"10.1016/j.polymertesting.2025.108743","url":null,"abstract":"<div><div>This study investigates the impact of material composition and processing parameters on glass fibre-reinforced recycled polypropylene (rPP) flakes through mechanical and rheological testing. Using a three-factor, three-level Box-Behnken Design (BBD) within Response Surface Methodology (RSM), the effects of glass fibre flake content, additive content, and extruder screw speed on the properties of injection-moulded samples were evaluated. Analysis of variance (ANOVA) and cross-validation were conducted to assess the influence of these parameters on tensile and rheological properties. The key objective was to maximize tensile modulus (E<sub>t</sub>) without compromising tensile strength. The results showed a 60 % increase in E<sub>t</sub> by optimizing extruder screw speed and flake content, achieving the highest E<sub>t</sub> (4.1 GPa) at a screw speed of 150 rpm, 50 wt% flake content, and 5 wt% additive. The additive contributed up to a 20 % increase in E<sub>t</sub> but primarily influenced rheological behaviour. Glass fibre flake content was the most significant factor affecting mechanical and rheological properties, with additive content enhancing flow characteristics. These findings highlight the potential to optimize glass fibre-reinforced rPP composites for improved performance, offering a sustainable material solution for applications in diverse industries.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"144 ","pages":"Article 108743"},"PeriodicalIF":5.0,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deciphering the crosslink mechanism of dual cure EP(D)M and CTS rubber compounds for reduced oil swell 解读双硫化EP(D)M和CTS橡胶化合物的减油交联机理

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-13 DOI: 10.1016/j.polymertesting.2025.108736

Gina Butuc , Kees van Leerdam , Brenda Rossenaar , Auke Talma , Anke Blume

{"title":"Deciphering the crosslink mechanism of dual cure EP(D)M and CTS rubber compounds for reduced oil swell","authors":"Gina Butuc , Kees van Leerdam , Brenda Rossenaar , Auke Talma , Anke Blume","doi":"10.1016/j.polymertesting.2025.108736","DOIUrl":"10.1016/j.polymertesting.2025.108736","url":null,"abstract":"<div><div>Rubber compounds containing blends of two or more polymers are common in various industrial applications, starting with the tire industry. Blends are most commonly comprising of materials that are compatible with each other. However, for blends that are comprising of polymeric materials with limited compatibility, understanding the limitation and ways to overcome it is paramount to ensuring rubber compounds homogeneity. In this study Ethylene Propylene (Diene) Polymer (EPDM) or Ethylene Propylene Polymer (EPM) and Cyclic Tetrasulfide (CTS) are combined with the goal of achieving a compound that has superior properties than EPDM or EPM. Thermodynamic studies are deployed to illustrate materials' compatibility. The role of CTS in the compound is discussed in detail, as it presents dual functions. This study represents a fundamental analysis of EP(D)M-CTS blends, starting with Thermodynamic studies and polymeric phase analysis by Scanning and Transmission Electron Microscopy (S(T)EM) hyphenated by Energy-Dispersive X-ray Spectroscopy (EDX) or Raman Spectroscopy. The resulting rubber compounds' mechanical properties are analyzed, including the Payne effect. The compound resistance against swelling when exposed to a standard hydrocarbon oil was tested on a side-by-side comparison with pure EPD and they show positive outcome. EPDM-CTS compounds have an increased resistance to swell in standard hydrocarbon oil. This feature is important in rubber articles such as for o-rings, gaskets, and other seal articles. The focus of this study is to elucidate the mechanism of crosslinking in rubber compounds comprising of EP(D)M and CTS. This fundamental understanding of the crosslinking chemical process signifies the building block for future EP(D)M-CTS compound development.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"145 ","pages":"Article 108736"},"PeriodicalIF":5.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal annealing optimization for improved mechanical performance of PLA parts produced via 3D printing 通过3D打印提高PLA零件机械性能的热退火优化

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-11 DOI: 10.1016/j.polymertesting.2025.108735

Çağlar Kahya , Oğuz Tunçel , Onur Çavuşoğlu , Kenan Tüfekci

{"title":"Thermal annealing optimization for improved mechanical performance of PLA parts produced via 3D printing","authors":"Çağlar Kahya , Oğuz Tunçel , Onur Çavuşoğlu , Kenan Tüfekci","doi":"10.1016/j.polymertesting.2025.108735","DOIUrl":"10.1016/j.polymertesting.2025.108735","url":null,"abstract":"<div><div>This study employs an integrated approach using Taguchi, ANOVA, and Grey Relational Analysis to optimize the mechanical performance of PLA parts produced via Fused Filament Fabrication through controlled thermal annealing. The analysis examines the effects of annealing temperature and time on tensile, flexural, compressive, and impact strengths, aiming to identify optimal post-processing conditions for improved material properties. Annealing temperatures ranged from 70 °C to 110 °C, and durations varied between 40 and 200 min. Key findings indicate that the most influential parameters were achieved at 90 °C for 120 min, yielding notable enhancements in tensile strength, flexural strength, compressive strength, and impact resistance. The Taguchi method identified optimal conditions for each mechanical property, with temperature emerging as the most influential factor. ANOVA analysis further quantified the contribution ratio of temperature and time, validating the Taguchi results and confirming that temperature accounted for most of the variation in mechanical performance. Differential Scanning Calorimetry supported these findings, showing increased crystallinity in PLA, thus highlighting the significant impact of optimized thermal annealing on enhancing 3D-printed PLA parts.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"144 ","pages":"Article 108735"},"PeriodicalIF":5.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of gradient layered structure for microwave absorbing composite materials with strong absorption and high bandwidth 强吸高带宽微波吸收复合材料梯度层状结构的构建

IF 5 2区材料科学

Polymer Testing Pub Date : 2025-02-10 DOI: 10.1016/j.polymertesting.2025.108729

Mei Guo, Zikang Han, Guangsheng Shi, Rong Chen, Jiang Li, Shaoyun Guo

{"title":"Construction of gradient layered structure for microwave absorbing composite materials with strong absorption and high bandwidth","authors":"Mei Guo, Zikang Han, Guangsheng Shi, Rong Chen, Jiang Li, Shaoyun Guo","doi":"10.1016/j.polymertesting.2025.108729","DOIUrl":"10.1016/j.polymertesting.2025.108729","url":null,"abstract":"<div><div>The unique properties of two-dimensional metal carbides (MXene) make them promising for use in absorbing electromagnetic waves. However, their high conductivity and single dielectric loss mechanism lead to poor impedance matching, and limit their performance in absorbing microwaves. In this paper, a gradient layered structure using MXene combined with waterborne polyurethane (WPU) was designed, and MXene content or nickel content after the magnetization treatment of MXene were varied to create gradient changes in the electromagnetic parameters. It was shown that designing gradient layered structures with different characteristic impedances can allow more electromagnetic waves to enter the substrate and undergo multiple reflections and dissipation at the inner layer and interface. Through optimal structural design, the multi-layer sample (NM<sub>11</sub>-10)<sub>1</sub>(NM<sub>11</sub>-25)<sub>2</sub> achieved an effective absorption bandwidth of 6.80 GHz at a thickness of 4.0 mm, which is 66 % higher than the absorption bandwidth of the corresponding single-layer sample NM<sub>11</sub>-10 (4.10 GHz). This method provides a preparation process for flexible, lightweight, and broadband absorbing materials, showing significant promise for the application of MXene composite materials in the field of wave absorption.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":"144 ","pages":"Article 108729"},"PeriodicalIF":5.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0