Composites Science and Technology最新文献

{"title":"3D-printed graphene skeletons for highly-efficient thermal conductivity enhancement and superior compressibility of thermal interface composites","authors":"Ni Lu ,&nbsp;Xing Zhang ,&nbsp;Kun Huang ,&nbsp;Pei Tang ,&nbsp;Chang Liu ,&nbsp;Han Wang ,&nbsp;You Zeng","doi":"10.1016/j.compscitech.2025.111280","DOIUrl":"10.1016/j.compscitech.2025.111280","url":null,"abstract":"<div><div>Enhancing thermal conductivity of polymer-based composites while maintaining high compressibility remains a critical challenge in developing high-performance thermal interface materials (TIMs). In this study, we constructed multi-scale porous graphene skeletons using a 3D printing technique and subsequently infiltrated them with polydimethylsiloxane (PDMS) to first fabricate 3D-printed graphene/PDMS composites. The obtained composites achieved thermal conductivity of 0.83 W/m·K at a graphene loading of only 2.75 wt%, corresponding to an impressive thermal conductivity enhancement efficiency of 195 %. These results demonstrate the remarkable effectiveness of the 3D-printed graphene skeleton in greatly improving thermal conductivity at extremely low filler loadings. Furthermore, the composites exhibited excellent compressibility, with low compressive modulus of 0.42 MPa. These superior performances are attributed to the continuous heat transfer pathways, highly-integrated skeleton, low interfacial thermal resistance, and multi-scale porous structures of the skeleton. This work provides a novel strategy for fabricating high-performance TIMs with integrated structural and multifunctional properties.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111280"},"PeriodicalIF":8.3,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518250","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":"Water-resistant, tough, and moldable corn stover-based structural materials through multiple dynamic cross-linking networks in-situ thermal rearrangement strategy","authors":"Wenjing Wang ,&nbsp;Aohong Tang ,&nbsp;Wuming Fan ,&nbsp;Yida Yin ,&nbsp;Zhe Qiu ,&nbsp;Yonggui Wang ,&nbsp;Tianpeng Zhang ,&nbsp;Zefang Xiao ,&nbsp;Yanjun Xie","doi":"10.1016/j.compscitech.2025.111279","DOIUrl":"10.1016/j.compscitech.2025.111279","url":null,"abstract":"<div><div>Renewable and biodegradable materials derived from biomass have emerged as promising alternatives to non-biodegradable petroleum-based plastics. However, most biomass-based materials have difficulties meeting the standards required for practical applications regarding water resistance and mechanical properties. Herein, a scalable and efficient bottom-up approach is developed to transform low-value-added corn stover into a tough, moldable, and water-resistant structural material (CSS + CAFe) via a combination of multiple dynamic cross-linking networks' construction and the thermal rearrangement technique. Through the rearrangement of dynamic bonds, including coordination bonds, hydrogen bonds, and ester bonds during hot pressing, the corn stover fibers achieve interface reconfiguration and strong interlayer bonding, resulting in an enhanced water resistance capability (a 41.55% decrease in water absorption and a 154.7% increase in wet strength). The as-prepared CSS + CAFe composite materials deliver superior moldability, which enables them to be processed into tableware. Furthermore, this multiple dynamic cross-linking networks in-situ thermal rearrangement strategy involves only green chemicals, and life cycle assessment (LCA) shows that its production process is more environmentally friendly compared to polypropylene (PP) and low-density polyethylene (LDPE). As such, this work provides a promising approach to producing biodegradable and sustainable structural materials, which are expected to serve as alternatives to petrochemical plastics.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111279"},"PeriodicalIF":8.3,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535475","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":"Understanding printing pressure on the mechanical performances of 3D printed thermoplastic composites: modelling and experiments","authors":"Xingrui Tong,&nbsp;Kunkun Fu,&nbsp;Zhongsen Zhang,&nbsp;Junming Zhang,&nbsp;Yongguang Guo,&nbsp;Yan Li","doi":"10.1016/j.compscitech.2025.111274","DOIUrl":"10.1016/j.compscitech.2025.111274","url":null,"abstract":"<div><div>Printing pressure represents a critical processing parameter that exerts substantial influence on the interlayer adhesion of 3D-printed fiber-reinforced thermoplastic composites, consequently determining their mechanical performance. In this investigation, a non-isothermal computational fluid dynamics (CFD) model was developed, incorporating the non-Newtonian rheological behavior of molten thermoplastic materials during the fused filament fabrication process. The CFD simulations demonstrated remarkable accuracy in predicting printing pressure distributions, which were validated through real-time measurements of printing forces using a high-precision force monitoring system integrated into the build platform. Quantitative analysis revealed that the generation of printing pressure is predominantly governed by two mechanisms: (i) the compressive forces induced by the nozzle head on newly extruded thermoplastic materials, and (ii) the impact forces resulting from the deceleration of molten thermoplastic deposition onto the build platform or previously deposited layers. Furthermore, the CFD model enabled the establishment of a correlation between print quality and printing pressure. Detailed mechanistic analysis was conducted to elucidate the fundamental causes of inadequate interlayer adhesion with respect to various printing parameters. The experimental results conclusively demonstrated that optimized printing pressures effectively eliminate intra-filament voids while simultaneously increasing the interfacial contact area between adjacent layers, thereby significantly enhancing the interlayer adhesion strength in printed composite structures.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111274"},"PeriodicalIF":8.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518312","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":"Quasi-isotropically thermally conductive, electrically insulated, and recyclable flexible PVA composite film via magnetic field-induced liquid metal alignment","authors":"Yilin Liu,&nbsp;Ting Gu,&nbsp;Song Yang,&nbsp;Ying Zhang,&nbsp;Fufa Zhang,&nbsp;Fei Liu","doi":"10.1016/j.compscitech.2025.111278","DOIUrl":"10.1016/j.compscitech.2025.111278","url":null,"abstract":"<div><div>Using polymer composites with elastic compliance as thermal interface materials (TIMs) effectively minimizes thermal contact resistance between the heat sink and the heat source, thereby enhancing the heat dissipation rate. Currently, most TIMs are obtained by incorporating high-modulus fillers into a flexible polymer matrix and constructing heat transmission channels oriented in the through-plane direction. However, the addition of excessive rigid fillers can compromise material softness and resilience, posing a significant challenge in preparing TIMs that balance excellent thermal conductivity with good flexibility. In this study, we successfully fabricated a super-flexible composite film with quasi-isotropic thermal conductivity, utilizing magnetic soft liquid metal (LM@Ni) nanodroplet and polyvinyl alcohol (PVA) as the primary components, through a magnetic field-induced technique. The M-PVA/LM@Ni_5:2-40 composite film exhibits exceptional through-plane and in-plane thermal conductivities (5.34 and 8.93 W/m·K), attributed to the alignment of dense LM@Ni particles during PVA film formation, induced by external magnetic fields, and the formation of efficient heat conduction networks facilitated by Ni nanoparticles bridging deformable LM droplets. Furthermore, the thermal conductive anisotropy constants of the prepared M-PVA/LM@Ni films lie within a range of 1.77–3.06, demonstrating quasi-isotropic thermal conductivity. More importantly, the M-PVA/LM@Ni composite films also boast remarkable toughness (37.93 MJ/m³), high electrical insulation (3.9 × 10⁹ Ω cm), and recyclability. These admirable features combined with the scalable fabrication process, make M-PVA/LM@Ni films promising for broad application prospects in the thermal management of high-power integrated electronic devices.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111278"},"PeriodicalIF":8.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501561","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":"Self-healing interfaces in fiber reinforced polymers: Computational modeling","authors":"Yulin Sun ,&nbsp;Laura Simonini ,&nbsp;Chen Xing ,&nbsp;Leon Mishnaevsky Jr.","doi":"10.1016/j.compscitech.2025.111269","DOIUrl":"10.1016/j.compscitech.2025.111269","url":null,"abstract":"<div><div>Fiber-matrix interfaces play a critical role in determining the durability of composite structures. The prospect of developing self-healing interfaces could pave the way for significantly extending their service life. In this study, we investigate the self-healing potential of nanostructured layers at interfaces of epoxy/carbon fiber composites. A three-dimensional thermomechanical model of epoxy/carbon fiber composites with a self-healing nanostructured polycaprolactone (PCL) layer at fiber–matrix interfaces is developed. A fully coupled thermal-stress procedure is established to simulate the healing process of interfaces. To better capture the realistic interfacial properties of this material, both residual stress and surface roughness are considered. Temperature-dependent material properties are included in the model, and heat generation during PCL recrystallization is analyzed. The proposed model is validated by comparing numerical predictions with the microbond testing data of this novel composite material. Numerical results reveal that surface roughness enhances interfacial strength while residual stresses reduce it. Furthermore, the healing process not only restores the interface bonds but also reduces thermal residual stress in the healed material. This study provides valuable insights into leveraging self-healing interfaces to enhance the durability of composite structures.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111269"},"PeriodicalIF":8.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480788","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 pressure modulation approach to enhance mechanical properties of 3D-printed continuous fiber-reinforced composites","authors":"Junming Zhang ,&nbsp;Weidong Yang ,&nbsp;Peng Wang ,&nbsp;Yonglin Chen ,&nbsp;Yiu-Wing Mai ,&nbsp;Yan Li","doi":"10.1016/j.compscitech.2025.111277","DOIUrl":"10.1016/j.compscitech.2025.111277","url":null,"abstract":"<div><div>3D-printed continuous fiber-reinforced composites (CFRCs) have significant potential for applications in the aerospace and automotive industries. However, their mechanical performance is often compromised by defects such as interlayer voids, weak interfaces, and insufficient impregnation arising from the layer-by-layer printing process. In this study, we propose a pressure modulation approach to enhance the mechanical properties of 3D printed CFRCs. The pressure-driven intimate contact and impregnation behavior during printing were modeled to reveal the relationship between the printing pressure and the defects. Then, a multi-scale finite element model was developed to link these defects to mechanical performance. Furthermore, we optimized the printing pressure by adjusting the printing layer height, which significantly reduced defects and led to a nine-fold increase in the transverse tensile strength of 3D-printed CFRCs. The experimental results of CFRCs printed at different layer heights validate the proposed model, demonstrating that increasing printing pressure enhances intimate contact and impregnation, hence improving the mechanical performance of 3D-printed CFRCs. This study proposes a pressure modulation approach to enhance the mechanical performance of 3D-printed CFRCs, enabling their broader application in the aerospace and automotive industries.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111277"},"PeriodicalIF":8.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501562","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":"Influence of yarn deformation on the mechanical behavior of 2.5D 1/2-twill warp-lining woven composites via an OCRNet+HRNet based parametric modeling method","authors":"Xiangling Zhang ,&nbsp;Junhua Guo ,&nbsp;Yifan Zhang ,&nbsp;Chun Guo ,&nbsp;Weidong Wen ,&nbsp;Wantao Guo ,&nbsp;Huabing Wen","doi":"10.1016/j.compscitech.2025.111276","DOIUrl":"10.1016/j.compscitech.2025.111276","url":null,"abstract":"<div><div>The 2.5D 1/2-twill warp-lining woven composites (2.5D-1/2T-WLWC) are a highly promising material, but the precise extraction of its meso-structural parameters and the rapid construction of high-fidelity models remain key challenges limiting its engineering applications. In this work, a semantic segmentation technique in the field of computer vision, i.e., OCRNet + HRNet network, is introduced, and a parametric and automated modeling method considering yarn extrusion is proposed on this basis, which introduces a parameter <em>λ</em> for yarn extrusion control and a model interference correction method for yarn node control. Subsequently, the rationality of the proposed modeling method is verified in terms of geometrical parameters, mechanical properties and damage modes, and the influence of the parameter λ on the mechanical behavior of the material is analyzed. The results show that the average comparison error of geometric parameters is only 5.16 %, the maximum prediction error of mechanical properties is only 3.51 %, the predicted stress-strain curve is basically consistent with the experimental curve, and the key features of the ultimate damage morphology coincide with the actual fracture. It is also revealed that as parameter <em>λ</em> increases, the stiffness and strength of the material under warp loading increase, while they exhibit an initial increase followed by a decrease under weft loading. Therefore, by regulating parameter <em>λ</em>, the internal stress distribution of the material can be optimized, and its mechanical properties and damage resistance can be improved, which has a significant engineering reference value for material design and molding process.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111276"},"PeriodicalIF":8.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472138","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":"Construction of “octopus\"-like POSS nanostructure triggerring interpenetrating network for high-performance epoxy thermosets and CFRP composites","authors":"Mengyuan Hao ,&nbsp;Jiaming Yang ,&nbsp;Chengxi Zhu ,&nbsp;Yonggang Zhang ,&nbsp;Xin Qian ,&nbsp;Jianhai Zhi ,&nbsp;Li Liu ,&nbsp;Yudong Huang","doi":"10.1016/j.compscitech.2025.111273","DOIUrl":"10.1016/j.compscitech.2025.111273","url":null,"abstract":"<div><div>Simultaneously toughening and strengthening epoxy thermosets remains the critical challenge in the advancement of high-performance matrices used in advanced carbon fiber reinforced polymers (CFRPs). In this research, a series of “octopus\"-like nano-POSS fillers with diverse side-chain structures were synthesized and incorporated as the toughening core in an in-situ interpenetrating network (IPN). This approach aims to achieve synergistic toughening and strengthening through multiple mechanisms, primarily including particle debonding and plastic shear deformation. Firstly, the critical impacts of side-chain structures in POSS on structure-related parameters were systematically investigated, with particular emphasis on physical entanglement and spatial hindrance. It was confirmed that extended flexible linear segments within POSS promoted robust physical entanglement, effectively increasing the cross-link density of the system and thereby enhancing its energy absorption capabilities. As a result, the maximum tensile strength and impact toughness of the matrix reached 105 MPa and 40.3 kJ/m², respectively, representing a 19.3 % increase in tensile strength and a remarkable 155.1 % improvement in impact toughness compared to pure epoxy. Significant improvements in flexural properties, impact toughness, and interlaminar shear strength (ILSS) of CFRPs have been demonstrated, effectively validating their performance enhancements. Specifically, for the E/V/OCPC composite, the flexural strength and impact toughness were elevated to 473 MPa and 53.8 kJ/m², marking respective improvements of 20.1 % and 47.0 % over EP composites. The considerable enhancement in the properties of the matrix and composites underscores the efficacy of constructing homogeneous synergistic toughening systems and optimizing the physical entanglement of nanofillers in developing advanced composites with superior performance.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111273"},"PeriodicalIF":8.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491590","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":"Design of thermal conductive porous elastomer via supercritical CO2 foaming-assisted BN alignment","authors":"Zuoze Fan,&nbsp;Bo Wang,&nbsp;Yishen Zhao,&nbsp;Ruyun Xu,&nbsp;Lei Zhang,&nbsp;Guangxian Li,&nbsp;Xia Liao","doi":"10.1016/j.compscitech.2025.111275","DOIUrl":"10.1016/j.compscitech.2025.111275","url":null,"abstract":"<div><div>Development of lightweight thermally conductive polymers can alleviate the overheating issues of batteries and electronic components. Supercritical CO₂ (scCO₂) foaming technology has the capabilities of both reducing the weight of polymers and constructing thermal conduction pathway. Herein, the layered cell structure induced by scCO₂ foaming technology was used to drive the arrangement of boron nitride (BN) in liquid silicone rubber (LSR) foam. Impacts of the layered cell structure on the orientation degree of BN and the thermal conductive pathways were investigated through X-ray diffraction and finite-element simulation. It was found that the cell growth facilitated alignment of BN along the layer direction. Compared with the isotropic distributed BN, aligned BN was more conducive to the formation of thermal conductive pathways and reduced local overheating. For BN/LSR foam with similar volume expansion ratios and cell sizes, the thermal conductivity of the layered composite foam was 141 % that of the uniform composite foam. In comparison to the unfoamed BN/LSR solid, BN/LSR foam with a layered cell structure exhibited faster thermal responsiveness and more excellent compressive cycling performance. The design of layered cell structure proposed in this work provided a new perspective for improving the heat dissipation capacity of foam materials.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111275"},"PeriodicalIF":8.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335763","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":"Structure tensor-based analysis method for quantitative assessment of fibre waviness in fibre-steered laminates manufactured by continuous tow shearing","authors":"Charles P. Macleod,&nbsp;Bohao Zhang,&nbsp;Jonathan Cooper,&nbsp;Byung Chul Kim","doi":"10.1016/j.compscitech.2025.111270","DOIUrl":"10.1016/j.compscitech.2025.111270","url":null,"abstract":"<div><div>Producing fibre-steered laminates require the use of automated tape deposition techniques. Although the Automated Fibre Placement (AFP) is the state-of-the-art fibre steering technology, its tape handling mechanism causes various defects such as tape buckling. Continuous tow shearing (CTS) was developed to eliminate such defects by in-plane shearing prepreg tapes, demonstrating superior fibre steering quality. However, the inherent fibre misalignments within the tape material may result in micro-level fibre waviness during shearing. It is important to measure the fibre waviness level in CTS-steered prepreg layups or laminates.</div><div>The existing fibre waviness measuring processes requires high-fidelity microscope images, limiting scanning area and processing time. This paper presents a new method utilising Structure Tensor Analysis (STA) for 100 mm wide, CTS-steered prepreg tapes scanned using a contact image sensor. The effects of the processing parameters of the STA on the accuracy of the analysis result were investigated, by comparing the results against microscopic analysis using the High Resolution Misalignment Analysis (HRMA). The analysis results have demonstrated that the STA has the potential for fast and cost-effective fibre-waviness inspection to verify layup quality of fibre-steered layups and laminates.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111270"},"PeriodicalIF":8.3,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472139","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}