Composites Science and Technology最新文献

{"title":"High-performance boron nitride epoxy composites via dendritic amino surface modification for advanced packaging applications","authors":"Zihao Lin ,&nbsp;Alexandar King ,&nbsp;Ju Won Lim ,&nbsp;Kaushik Godbole ,&nbsp;Kyoung-Sik Moon ,&nbsp;Wen-Hsi Lee ,&nbsp;Ching-Ping Wong","doi":"10.1016/j.compscitech.2025.111257","DOIUrl":"10.1016/j.compscitech.2025.111257","url":null,"abstract":"<div><div>In this study, a rapid and scalable surface functionalization strategy is developed to enhance the interfacial thermal transport between hexagonal boron nitride (h-BN) fillers and epoxy matrices for high-performance thermal interface materials (TIMs). The modification process was employed: initial grafting of glycine onto BN surfaces, followed by Aza-Michael addition reactions to generate a hyperbranched polyacrylate/polyamine network. The optimized BN@G21-PA filler, when incorporated into an epoxy matrix at 30 wt%, achieved a thermal conductivity of 1.05 W/m·K, representing a 452.6 % increase over neat epoxy. Compared to unmodified BN, the interfacial thermal resistance was reduced by over 50 %, as estimated via effective medium theory. The composites also exhibited largely enhanced thermomechanical properties, including lower coefficient of thermal expansion (CTE), higher storage modulus, improved glass transition temperature, and superior rheological characteristics. Both experimentation and simulation further validated the superior cooling performance and system-level thermal management capability of BN@G21-PA composites in the performance tests on the TIMs. This work demonstrates an effective route toward next-generation polymer composites for advanced electronic packaging applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111257"},"PeriodicalIF":8.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271507","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":"Elegant design of biobased carbon/polyaniline metacomposites for tunable epsilon-negative and epsilon-near-zero responses","authors":"Qiuyun Yang ,&nbsp;Yunpeng Qu ,&nbsp;Yunlei Zhou ,&nbsp;Junfei Ding ,&nbsp;Qiong Peng ,&nbsp;Xiaosi Qi ,&nbsp;Farid Manshaii ,&nbsp;Yao Liu","doi":"10.1016/j.compscitech.2025.111255","DOIUrl":"10.1016/j.compscitech.2025.111255","url":null,"abstract":"<div><div>Characterized by the innovative random structure design of functional and matrix phases, metacomposites with <em>ε′</em>-negative (EN) and <em>ε′</em>-near-zero (ENZ) responses have emerged as a highly promising class of electromagnetic (EM) metamaterials. This work introduces novel biobased carbon/polyaniline (BC/PANI) metacomposites with a bilayer structure. The dual conductive network in these metacomposites consists of a three-dimensional, lignin-derived carbon porous network as the functional phase and a conductive polyaniline (PANI) network as the matrix, successfully achieving highly tunable ENZ (|<em>ε'|</em> &lt; 1) and EN (<em>ε'</em> &lt; 0) parameters within the radio-frequency band. Both electric dipole resonance and plasmonic oscillation contribute to the EN response in the 100 kHz-40 MHz region, as validated by the Lorentz-Drude model. The ENZ frequencies (190 kHz–418 kHz), as well as the magnitude and frequency dispersion of the EN response, are precisely regulated by the BC network and bilayer structure. The introduction of the porous BC network within the PANI matrix reduces the equivalent carrier concentration in the metacomposites, thereby lowering the absolute value of <em>ε'</em>. Furthermore, by leveraging the electric dipole competition mechanism at the BC/PANI-PANI bilayer interface, the frequency dispersion near the ENZ frequency is significantly minimized. The evolution of the electrical phase relationships in EN materials was elucidated using an equivalent circuit analysis method, revealing their inductive characteristics. This work enriches the category metacomposites through innovative microstructure design, providing a foundation for tunable ENZ and EN responses.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111255"},"PeriodicalIF":8.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231822","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 comprehensive framework for modeling volatile transport and bubble dynamics in liquid composite molding processes","authors":"Pavel Simacek,&nbsp;Navid Niknafs Kermani,&nbsp;Suresh G. Advani","doi":"10.1016/j.compscitech.2025.111254","DOIUrl":"10.1016/j.compscitech.2025.111254","url":null,"abstract":"<div><div>In Liquid Composite Molding (LCM), the complete impregnation of fibrous preforms is essential to minimize porosity and achieve the desired mechanical performance. Voids may form when entrapped air, moisture, or resin-induced volatiles are not effectively removed prior to gelation. This work focuses on the transport and transformation of volatiles, either dissolved in the resin or present as nucleated bubbles, during the mold filling process. To accomplish this, it is necessary to predict the phenomena of nucleation, dissolution, and transport of both nucleated and dissolved volatiles. This paper presents a framework to model the dissolution, nucleation and tracking of nucleated bubbles during resin impregnation. The framework is integrated with the simulation of the resin impregnation process which provides the resin velocity and pressures during the filling. This integration enables the prediction of void locations and sizes at the end of the impregnation process as a function of the material properties, process parameters and part geometry.</div><div>The model is exercised to verify the patterns of volatile nucleation and dissolution and examine the effect of bubble mobility on bubble dynamics. The impact of bubble mobility, particularly its size dependence, is evaluated. Larger bubbles exhibit sufficient mobility to escape through the vents, facilitating passive degassing, while smaller bubbles tend to remain and may re-dissolve with pressure recovery. Finally, bubble entrapment near the location of merging flow fronts in the absence of a vent is demonstrated, highlighting the tendency for porosity accumulation around weld-lines as observed experimentally.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111254"},"PeriodicalIF":8.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213343","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":"Study on mechanical properties degradation of CFRP under laser irradiation","authors":"Mingzhe Li ,&nbsp;Xinyu Jia ,&nbsp;Lihong Gao ,&nbsp;Zhuang Ma ,&nbsp;Jiawei Wang","doi":"10.1016/j.compscitech.2025.111253","DOIUrl":"10.1016/j.compscitech.2025.111253","url":null,"abstract":"<div><div>With the continuous development of laser technology, carbon fiber reinforced polymer (CFRP) used as structural materials for components may increasingly be exposed to the risk of laser irradiation. This study systematically studies the mechanical properties degradation of CFRP under different laser conditions, focusing on its tensile properties and fracture behavior. The research initially investigates the influence of laser irradiation under varying irradiation times, power densities, and coverage areas on the degradation of tensile strength and modulus in CFRP. Utilizing digital image correlation (DIC) technology and fracture morphology analysis, the study delves into the gradual damage process and failure mechanisms of CFRP during loading. Furthermore, a thermo-mechanical coupled numerical model of CFRP is established to explore the degradation of mechanical properties under laser irradiation, effectively capturing the stress-strain variation patterns of both the resin and fiber phases within the CFRP. The results show that the residual strength of CFRP decreases significantly with increasing laser irradiation time, while the trend of residual modulus is not obvious. However, both strength and modulus decrease significantly with increasing laser power density. When laser irradiation and mechanical loading are applied simultaneously, the failure time of CFRP is significantly reduced. Under laser irradiation at 350 W/cm², CFRP with 20–30 % preload tensile strength fails in just 0.6–0.8 s. This study provides valuable insights and theoretical support to enhance the safety of CFRP in high-intensity laser environments.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111253"},"PeriodicalIF":8.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196250","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":"Mechano-electrochemical analysis of lithiation-induced deformation of composite electrodes using carbon fibre as current collector","authors":"Rui Mao ,&nbsp;Sheng Feng ,&nbsp;Zhenkun Lei ,&nbsp;Ruixiang Bai ,&nbsp;Wei Tan","doi":"10.1016/j.compscitech.2025.111251","DOIUrl":"10.1016/j.compscitech.2025.111251","url":null,"abstract":"<div><div>Composite structure batteries often use carbon fibres (CFs) as current collectors. CFs with active materials to form composite electrodes introduces complexity in understanding their role during electrochemical reactions, as the CFs used as current collectors also undergo lithium-ion intercalation, leading to volume expansion and deformation. This study investigates the relationship between lithiation potential and deflection for anode and cathode, graphite-carbon fibre bilayer electrodes (GCBE) and lithium iron phosphate-carbon fibre bilayer electrodes (LCBE), using an in-situ electrochemical cell measurement device. Experimental results indicate that, for the same thickness ratio, during the lithiation the deflection of LCBE is only 13.3 % of that of GCBE. The CFs in LCBE primarily function as current collectors for electron transport and have minimal impact on the potential. In contrast, the CFs in GCBE not only serve as current collectors for electron transport but also participate in partial electrochemical reactions, altering the discharge curve and reducing the electrode potential. A numerical model incorporating mechanical stress (MS) between composite electrode particles and current collector lithiation of composite electrodes was developed. Numerical simulation results reveal that MS in composite electrodes inhibits the concentration, lithiation rate and surface stress of active materials, but promotes them of the current collector, altering the lithium ions distribution especially in the CFs of the LCBE. Additionally, the thickness ratio between the graphite layer and CFs in the GCBE significantly impacts the diffusion rate and the deflection trend during lithiation. When the graphite layer thickness exceeds the CF thickness, the deflection curve shows a monotonically increasing trend. Conversely, when the graphite thickness is less than the CF thickness, the deflection curve exhibits an initial increase followed by a decrease.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111251"},"PeriodicalIF":8.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196252","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":"Deep learning-based analysis of damage mechanisms in 3D angle-interlock woven composites under variable impact conditions","authors":"Huajun Ding ,&nbsp;Wenjing Cao ,&nbsp;Bohong Gu ,&nbsp;Ruiyun Zhang ,&nbsp;Baozhong Sun","doi":"10.1016/j.compscitech.2025.111224","DOIUrl":"10.1016/j.compscitech.2025.111224","url":null,"abstract":"<div><div>This study presents an innovative method to improve deep learning segmentation of warp and weft yarns in composites, overcoming the shortcomings of existing deep learning techniques in accurately defining yarns. The method entails threshold screening of yarn area and aspect ratio, combined with morphological opening operations and an improved watershed algorithm to enhance the segmentation map’s accuracy. The findings indicate significant improvements in both continuity and accuracy. An examination of failure modes across various impact energy levels indicates that weft yarns mainly absorb energy and support loads; however, weak interfacial adhesion between yarns and resin leads to debonding, which is the main failure mode. At increased impact energies, cracks develop within the composite components rather than at interfaces. This implies that improving the interfacial bond between yarns and resin could strengthen impact resistance. Based on these observations, the study suggests utilizing resin with superior bonding characteristics to enhance the material’s impact resistance and longevity.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111224"},"PeriodicalIF":8.3,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137702","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":"Modelling the tensile behaviour of aligned discontinuous carbon fibre thermoplastic matrix composites under processing conditions","authors":"Burak Ogun Yavuz ,&nbsp;Ian Hamerton ,&nbsp;Marco L Longana ,&nbsp;Jonathan P-H Belnoue","doi":"10.1016/j.compscitech.2025.111252","DOIUrl":"10.1016/j.compscitech.2025.111252","url":null,"abstract":"<div><div>This study aims to develop a predictive tool for simulating the forming process of aligned discontinuous fibre reinforced composites (ADFRCs). Poly(L-lactic acid) (PLA) reinforced with discontinuous carbon fibres is used to form HiPerDiF tapes. An analytical micromechanical model is developed to predict the tensile stress of the tape as a function of tensile strain rate, incorporating the viscoelastic properties of the PLA matrix and the microstructural characteristics of the tape. The model uses a Maxwell approach for the viscoelastic behaviour of PLA and assumes tensile load transfer between fibres <em>via</em> matrix shearing. Additionally, a degree of crystallisation is integrated to account for a small amount of crystallisation that develops in the PLA whilst brought to temperature. This parameter is determined by fitting experimental data prior to validation. Hence, the model's predictions at temperatures at which the tape was not originally characterised and for non-monotonic deformation speeds fell within the 95 % confidence interval of a new set of experimental data. This work offers a pragmatic approach for optimising the forming of ADFRCs from the knowledge of known microstructural characteristics of the tape (i.e., fibre length, radius and volume fraction and resin viscosity and storage modulus).</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111252"},"PeriodicalIF":8.3,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155187","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":"Magnetic flexible metastructures: developing smart shape-morphing capabilities at extremely low-temperatures","authors":"Wenheng Han ,&nbsp;Wei Gao ,&nbsp;Xingzhe Wang","doi":"10.1016/j.compscitech.2025.111242","DOIUrl":"10.1016/j.compscitech.2025.111242","url":null,"abstract":"<div><div>Achieving intelligent actuation and durability in deformable structures for extreme environments, such as deep space and cryogenic medicine, presents a significant challenge, underscoring the urgent need for advanced materials and innovative designs. Among stimuli-responsive materials, magnetically actuated metastructures stand out for their distinctive magnetomechanical properties and superior actuation performance, providing effective solutions to these challenges. However, research on magnetic smart materials in extremely low-temperature, multi-field environments remains scarce. This study presents magnetically-responsive flexible metastructures, inspired by traditional origami and paper-cutting, capable of non-contact actuation, rapid and reversible responses, and large deformations, at both ambient and cryogenic temperatures (−196 °C). By harnessing the exceptional thermal stability of polyimide (PI) and programmed 3D printing of magnetic domains, the metastructures exhibit remarkable magnetically-driven deformation behavior, achieving up to 40 % shrinkage even under liquid nitrogen conditions. Furthermore, these metastructures demonstrate impressive crawling, grasping, and self-assembly capabilities at extreme low temperatures. Additionally, a magnetically-controlled superconducting flexible antenna is designed, enabling reconfiguration of its operating frequency through magnetically-driven deformation. This work provides a novel approach for realizing smart material functionalities and applications in extreme environments.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111242"},"PeriodicalIF":8.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137703","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":"Multifunctional bulletproof composite structure with broadband radar absorbing performance","authors":"Yunyi Wang ,&nbsp;Qian Luo ,&nbsp;Weibang Lyu ,&nbsp;Lichen Wang ,&nbsp;Mingji Chen","doi":"10.1016/j.compscitech.2025.111222","DOIUrl":"10.1016/j.compscitech.2025.111222","url":null,"abstract":"<div><div>Lightweight composite armor and radar absorbing composites (RAC) are two typical applications of advanced composites. However, due to their different requirements in the performance of component materials, the design of a multi-functional structure for both radar absorbing and ballistic protection becomes challenging. This paper reports a multifunctional bulletproof and radar absorbing composite structure (MBRACS) constructed from ultra-high molecular weight polyethylene (UHMWPE), aramid fiber reinforced composites (AFRC), carbon fiber reinforced composites (CFRC), and bulletproof SiC ceramics. Through interfacial impedance design as well as matched design of the flexible and hard materials, the compatibility of broadband radar absorbing performance and efficient bulletproof performance is realized. An innovative method for designing the patterned resistive films (PRFs) as interfacial absorbents by using the hyperelliptic equation has been proposed, which was combined with the genetic algorithm to optimize the patterns of PRFs together with the structural geometric and material parameters of the outer radar absorbing panel (RAP). Meanwhile, the layer thickness ratio of bulletproof SiC ceramics to UHMWPE backplate was optimized under a similar total surface density. The bullet action time and strike position on SiC ceramics, as well as the role of SiC ceramics and UHMWPE backplate in ballistic performance were analyzed. The experimental results show that the proposed MBRACS is capable of efficient radar absorption with −10dB reflectivity in the frequency range of 3.5 GHz–35GHz, and effective protection against three rounds of armor-piercing bullets is also demonstrated.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111222"},"PeriodicalIF":8.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196251","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":"Triboelectric mechanism enhances piezoelectric performance of polyimide composite nanofibrous membrane","authors":"Haodong Lin ,&nbsp;Xu Zhang ,&nbsp;Bilin Zhang ,&nbsp;Liangkang Huang ,&nbsp;Jun Fang ,&nbsp;Xinhai He ,&nbsp;Jianwei Li","doi":"10.1016/j.compscitech.2025.111231","DOIUrl":"10.1016/j.compscitech.2025.111231","url":null,"abstract":"<div><div>Flexible piezoelectric sensor demonstrates significant advancements in wearable electronics. However, the development of piezoelectric materials capable of operating under extreme conditions with exceptional thermal stability remains a critical challenge. Herein, FPI/PAN nanofibrous composite membrane was fabricated via a co-electrospinning technique, achieving a synergistic integration of piezoelectric and triboelectric effects. The synergistic interaction enhances mechanical-to-electrical conversion efficiency through charge superposition and interfacial polarization. The as-prepared sensor demonstrates favorable piezoelectric voltage output of 8 V and rapid response and recovery times (12 ms and 14 ms, respectively). The piezoelectric output remains stable after 10,000 cycles at 15 Hz/10 N, demonstrating excellent durability. In addition, the sensor has the ability to accurately detect diverse human motions, such as joint flexion, eye-blinking, and dynamic impacts. Notably, the FPI/PAN membrane maintains structural stability before 500 °C. Furthermore, it is found that the membrane exhibits a low dielectric constant (1.62–1.67) and smaller dielectric loss (0.0008–0.0024) within the range of 0–1 MHz. This study represents a new path for design and development of self-powered nanofibrous wearable sensors.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111231"},"PeriodicalIF":8.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155185","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}