Composites Science and Technology最新文献

{"title":"Corrigendum to: Enhanced radiation shielding performance of tungsten borides-epoxy composites [Composites Science and Technology, (269), 2025, 111233 DOI: https://doi.org/10.1016/j.compscitech.2025.111233]","authors":"Furkan Erdogan, Santiago Bermudez, Reza Mohammadi, Jessika V. Rojas","doi":"10.1016/j.compscitech.2025.111448","DOIUrl":"10.1016/j.compscitech.2025.111448","url":null,"abstract":"","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111448"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Designed core@double-shell KTN@Ag@cPS nanoparticles for regulation of dielectric properties and energy storage enhancement of PVDF-based composites","authors":"Gaoru Chen ,&nbsp;Chuanjie Lin ,&nbsp;Wanbo Liu ,&nbsp;Bo Chen ,&nbsp;Xiaogan Zheng ,&nbsp;Shilei Wang ,&nbsp;Haowei Lu ,&nbsp;Xuan Wang","doi":"10.1016/j.compscitech.2025.111461","DOIUrl":"10.1016/j.compscitech.2025.111461","url":null,"abstract":"<div><div>To address the trade-off among dielectric constant, dielectric loss, and breakdown strength in polymer-based composites and to achieve nanocomposite films with both high discharged energy density and high energy storage efficiency, core@double-shell structured KTN@Ag@cPS nanoparticles were designed and incorporated into a PVDF matrix. The KTN core imparts excellent frequency stability to the dielectric constant of nanocomposite films. The Ag shell can generates abundant interfacial polarization, thereby effectively enhancing the overall polarization intensity. The insulating cross-linked polystyrene (cPS) outer shell suppresses charge carriers migration, which reduces dielectric loss and improves breakdown strength. At a filler loading of 5 vol%, the KTN@Ag@cPS/PVDF nanocomposite film exhibits a high relative dielectric constant of 19.85 and a low loss tangent of 3.1 × 10⁻² at 100 Hz. Under an electric field of 250 kV/mm, the discharged energy density reaches 9.05 J/cm³. The overall performance surpasses that of both KTN/PVDF and KTN@Ag/PVDF nanocomposite films. This core@double-shell nanoparticle design provides an effective strategy for the development of composite films for high-energy-density capacitors.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111461"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145621183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiscale-multiphysics modeling of moisture absorption-induced dielectric evolution in polymeric composites","authors":"Partha Pratim Das ,&nbsp;Vamsee Vadlamudi ,&nbsp;Monjur Morshed Rabby ,&nbsp;Ankur Jain ,&nbsp;David Mollenhauer ,&nbsp;Rassel Raihan","doi":"10.1016/j.compscitech.2025.111433","DOIUrl":"10.1016/j.compscitech.2025.111433","url":null,"abstract":"<div><div>This study presents a multiscale-multiphysics computational framework for modeling complex moisture absorption mechanisms and their coupling with dielectric property evolution in polymer matrix composites (PMCs). First at the microscale level, orthotropic diffusion and absorption of water molecules, distinguishing between free and bound states respectively, are modeled using non-Fickian hindered diffusion model (HDM). The approach incorporates interphase effects and fiber-matrix heterogeneity utilizing finite element (FE) analysis. Emphasis is placed on increased diffusivity and absorption properties of interphase regions and their impact on the transport and reaction kinetics through representative volumetric elements (RVEs). A homogenization scheme subsequently translates these microscale constituent properties to macroscale behavior, enabling efficient FE implementation. A novel multiphysics coupling then integrates the absorption model with Maxwell's equations of electromagnetism in order to mechanistically model moisture-induced electrical property changes, and orientational polarization effects through dipole moment redistribution. The developed models are validated using experimental gravimetric data and broadband dielectric spectroscopy (BbDS) measurements performed on unidirectional glass fiber reinforced polymer (GFRP) composites subjected to hygrothermal aging. Results demonstrate that HDM successfully models moisture absorption mechanisms, e.g., diffusion, adsorption and desorption, while purely Fickian and irreversible binding models fail to match experimental trends. The coupled HDM-Maxwell model captures the correlation between experimentally observed moisture content and dielectric permittivity, where a ∼2.5 wt% of moisture content is found to result in ∼75% increase in dielectric permittivity. This coupled framework provides fundamental insights into the physics of moisture-electrical cross-property relationships in PMCs, while offering a validated analytical tool for modeling multifunctional composite performance in humid environments.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111433"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145577464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multilayer design and multi-objective optimization of neutron shielding composites by means of MCNP simulation and machine learning","authors":"Benben Liu ,&nbsp;Yizhuo Gu ,&nbsp;Ruiqi Guo ,&nbsp;Shaokai Wang ,&nbsp;Min Li","doi":"10.1016/j.compscitech.2025.111451","DOIUrl":"10.1016/j.compscitech.2025.111451","url":null,"abstract":"<div><div>To meet neutron shielding and lightweight requirements, fiber-reinforced polymer matrix composites offer significant advantages as multifunctional materials with both structural and shielding capabilities. Owing to their inherent multicomponent and multilayered configurations, selecting suitable reinforcements and optimizing multilayer structure remains challenging. This study addresses the design and multi-objective optimization of multilayer composite shielding structures for neutron radiation protection. Monte Carlo N-Particle (MCNP) simulation method is adopted to predict radiation shielding property of various composites. A homogeneous model is first employed to examine the effects of typical shielding fillers (B₄C and WO₃) on the effective neutron dose in an epoxy resin matrix across the full neutron energy spectrum. Subsequently, an idealized layered structure model is used to clarify material composition strategies and multi-layer design principles for epoxy resin matrix composite. The results show that for fast neutron protection, a bilayer configuration with a high-Z material as the front layer and a hydrogen-rich matrix as the rear layer is optimal. For slow neutron protection, multilayer configurations demonstrate significant advantages: a 128-layer structure can reduce the effective dose of slow neutrons by up to 30 % compared with a bilayer structure. Furthermore, a multi-objective optimization strategy is proposed for multilayer structures by integrating MCNP simulations with machine learning, which can optimize shielding efficiency, structural thickness, and overall mass. Among six regression algorithms, a three-layer neural network model is chosen, which achieves high prediction precision. This approach optimizes both the minimum-dose configuration at fixed thickness and the minimum-weight configuration at fixed dose, providing efficient design guidelines for multilayer composite shielding.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111451"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145577467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioinspired gradient-modulus interfacial strategy for high-strength and EMI-shielding carbon fiber composites","authors":"Wenlong Hu ,&nbsp;Lulu Yang ,&nbsp;Fuzheng Guo ,&nbsp;Fuzhen Xuan ,&nbsp;Shuzheng Zhang ,&nbsp;Xu Ma ,&nbsp;Jie Zhi ,&nbsp;Yu Cang ,&nbsp;Bin Yang","doi":"10.1016/j.compscitech.2025.111469","DOIUrl":"10.1016/j.compscitech.2025.111469","url":null,"abstract":"<div><div>The rapid growth of electronic communications has intensified electromagnetic pollution, creating an urgent need for lightweight, high-performance electromagnetic interference (EMI) shielding materials. Carbon fiber reinforced polymer composites (CFRPs) are attractive candidates due to their high specific strength, stiffness, and design flexibility, but their practical application is limited by inherently weak fiber-matrix interfaces and electrical conductivity significantly lower than metals. Inspired by the strong, versatile adhesion of mussels, we developed a hybrid coating on carbon fiber through sequential deposition of Fe³⁺-tannic acid metal-phenolic networks (MPNs), followed by in situ growth of silver nanoparticles (Ag NPs) via catechol-mediated reduction. This MPN-Ag hybrid network effectively enhances both interfacial mechanics and electrical properties. Mechanically, the smooth modulus gradient created by the hybrid interphase improves stress transfer and promotes cohesive resin failure, resulting in remarkable enhancements in interfacial property, with interfacial shear strength and transverse fiber bundle strength increasing by 85 % and 67 %, respectively. Moreover, the conductive MPN-Ag layer facilitates multiple EMI attenuation mechanisms, including reflection, conduction, and interfacial polarization losses, achieving an outstanding EMI shielding effectiveness of 22.7 dB at just 1 mm thickness. This facile, scalable strategy integrates structural reinforcement with functional performance, offering a pathway to multifunctional CFRPs capable of simultaneous mechanical robustness and effective EMI shielding. Such an approach advances the development of next-generation CFRPs for aerospace, electronics, and other advanced structural-functional applications, bridging the gap between high-performance composites and emerging multifunctional material demands.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111469"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145681331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of flexural properties of two different CFRPs before and after low-velocity impact: T1000 vs T300 interleaved with micro-/nano- Aramid fibers","authors":"Mingxin Ye ,&nbsp;Yabin Deng ,&nbsp;Yunsen Hu ,&nbsp;Xiaozhi Hu","doi":"10.1016/j.compscitech.2025.111428","DOIUrl":"10.1016/j.compscitech.2025.111428","url":null,"abstract":"<div><div>T1000 carbon fibers are far superior to T300 fibers in tension, but the performance of bulk T1000 composites can be matched by bulk T300 composites interleaved with sparsely distributed micro-/nano- Aramid pulp (AP) fibers. In this study, we focus not only on the short-beam shear strength but also on the flexural strength of T1000 and T300-AP composites before and after impact, as these properties are critical indicators of structural performance under bending-dominated loading conditions. Maintaining the AP-epoxy interlayer thickness increase at 8 μm or less, with AP areal densities of 2, 4 and 6 g/m², leads to improvements of up to 38 % in short-beam shear strength and 55 % in flexural strength for the T300-AP composites, surpassing the performance of plain T1000 composites without such AP-interfacial toughening. These findings highlight the importance of interfacial design and quasi-Z-directional fiber bridging in CFRPs, demonstrating that resin-rich layers between carbon fiber plies as thin as 15 μm can be transformed into mechanically interlocked ply interfaces through AP-interfacial toughening, thereby bringing the structural performance of T300-AP composites to parity with that of T1000 composites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111428"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145464919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-scale mechanism insight of elastomer toughened thermoplastic composites","authors":"Zheng Li ,&nbsp;Kaiyin Xiao ,&nbsp;Tong Li ,&nbsp;Bo Wang ,&nbsp;Peng Hao ,&nbsp;Zebei Mao ,&nbsp;Kaifan Du","doi":"10.1016/j.compscitech.2025.111434","DOIUrl":"10.1016/j.compscitech.2025.111434","url":null,"abstract":"<div><div>This study elucidates a multi-applicability mechanism of elastomer-toughened brittle thermoplastics polymers through experimental methods and multiscale analysis. Polyolefin elastomer (POE) and glycidyl methacrylate-modified POE (POE-GMA) were used to toughen thermoplastic polymers polyphenylene sulfide (PPS) and polybutylene terephthalate (PBT). It was found that small amounts of POE-GMA could enhance the fracture energy of PBT and PPS by 167 % and 415 %, while only sacrificing 5.3 %–11.6 % of strength or rigidity, and the lower the inherent toughness of the polymer, the better the toughening effect, whereas POE showed no significant effect. Molecular dynamics simulations indicate that the GMA groups enhance interactions between POE-GMA and polymers, promoting POE-GMA diffusion into the polymer matrix and improving dispersion. Further finite element modeling indicates that smaller and more dispersed elastomer particles can induce more microcracks, enhancing energy absorption and consequently increasing the fracture energy, thereby improving toughness. This multi-applicability mechanism provides crucial insights for designing polymer composites that balance toughness and rigidity.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111434"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145518876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A strain-adaptive hierarchical network enabling durable and highly sensitive conductive yarns for health monitoring","authors":"Jiajia He,&nbsp;Xinru Xian,&nbsp;Ying Chen,&nbsp;Shengnan Min,&nbsp;Chenxi Lu","doi":"10.1016/j.compscitech.2025.111457","DOIUrl":"10.1016/j.compscitech.2025.111457","url":null,"abstract":"<div><div>The development of high-performance elastic conductive yarns is often constrained by a formidable challenge: the inherent trade-off between high sensitivity and a wide sensing range, rooted in the poor adhesion and catastrophic fracture of conductive coatings upon stretching. Herein, we report a novel subsurface engineering strategy facilitated by an in-situ constructed FeOOH nanoscaffold on polyurethane (PU) yarns, which, combined with a pre-stretching design, effectively guides the distribution of polypyrrole (PPy) during polymerization. The process parameters were optimized via an orthogonal experimental design, which successfully constructs a strain-adaptive hierarchical conductive network characterized by surface microcracks, interfacial folded structures, and an internal PPy-permeated layer. The optimized conductive yarn exhibits an exceptional combination of an ultra-high gauge factor (3.71 × 10⁶) and a wide sensing range (up to 310 % strain). Mechanistic investigations reveal that the electrical response adapts to strain through a smart transition of the dominant conductive pathway: from surface crack propagation at low strains (ensuring high sensitivity) to the continuous internal network at large strains (guaranteeing broad range and durability). The FeOOH scaffold is proven crucial for enhancing the coating's uniformity and firmness. Finally, we demonstrate the practical utility of our sensor in monitoring diverse human motions and subtle physiological signals, showcasing its potential as a high-performance platform for wearable health monitoring.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111457"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145621180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental evaluation of residual microstresses in CFRP composites using nanoindentation and FIB cross-sectioning","authors":"Sarvenaz Ghaffari,&nbsp;Andrew Makeev","doi":"10.1016/j.compscitech.2025.111447","DOIUrl":"10.1016/j.compscitech.2025.111447","url":null,"abstract":"<div><div>Residual microstress is one of the major concerns in polymer-matrix composites. It may arise from mismatch in the physical and mechanical properties of the constituents, leading to premature material failure and damage in structural components. Therefore, it is important to understand and account for such stresses in design and manufacturing of advanced composites. This study presents a combined experimental approach to quantify residual microstresses in the matrix of carbon fiber-reinforced polymer (CFRP) composites. Residual stresses are released by fiber push-out, resulting in matrix deformation. Matrix deformation along the fiber direction, as well as in the fiber cross-section plane, is measured to estimate the residual microstresses. Deformation in the fiber direction is characterized using two complementary techniques: (1) nanoindentation to measure out-of-plane displacement, and (2) focused ion beam (FIB) cross-sectioning to visualize resin shrinkage associated with stress relaxation. Both methods reveal a cave-in effect at the resin pocket surfaces, confirming tensile residual stress in the matrix. In-plane deformation is evaluated by measuring the change in the cross-sectional diameter of the matrix hole before and after fiber push-out. An analytical solution has been devised to convert the measured strains into stresses near fibers, addressing the significance of residual microstresses. Results for a unidirectional CFRP tape material system, suitable for aircraft primary structures, show high tensile residual stress values in the matrix near the fiber surface. Such residual stresses, accelerating the onset of matrix cracking, can be detrimental to structural integrity.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111447"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145518586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorine-containing meta-aramid modified low dielectric, hydrophobic aramid paper","authors":"Yifan Hu,&nbsp;Qiuyue Zuo,&nbsp;Haowei Li,&nbsp;Lan Lei,&nbsp;Chunjie Xie,&nbsp;Hui Li","doi":"10.1016/j.compscitech.2025.111444","DOIUrl":"10.1016/j.compscitech.2025.111444","url":null,"abstract":"<div><div>Aramid paper with excellent mechanical properties, heat resistance and electrical insulation properties has a wide range of applications. However, traditional aramid paper still has problems such as easy moisture absorption and high dielectric constant, which to some extent limit its application in new fields, such as 5G/6G communication and wearable flexible devices. In this work, fluorine-containing meta-aramid solution was prepared. Different concentrations of fluorine-containing meta-aramid solutions were used to coat commercial aramid paper by scraping. Finally, a series of aramid papers modified by fluorine-containing aramid solution were obtained through drying treatment. The basic parameters and performances of commercial aramid paper and modified composite paper, including the appearance, microstructure, mechanical properties, dielectric properties and moisture absorption properties, were tested and characterized in detail. The results show that, the tensile strength of the composite paper can reach more than 80 MPa, far exceeding that of the unmodified commercial aramid paper. Furthermore, the composite paper exhibited low dielectric constant (1.90) and dielectric loss (0.01). The surface hydrophobicity and moisture resistance of composite aramid paper have been significantly improved when compared with the commercial aramid paper. Based on the method proposed in this work, the composite aramid paper has excellent characteristics such as low dielectric constant, hydrophobicity and low moisture absorption, and is expected to meet the strict requirements for aramid paper materials in multiple fields in the future. Furthermore, the technological process of this paper is relatively simple and is expected to be applied in industrial production in the future.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"274 ","pages":"Article 111444"},"PeriodicalIF":9.8,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145518595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}