Composites Part B: Engineering最新文献

{"title":"Accelerating mechanism of cement hydration by hydroxyl free radicals: new perspectives from photoexcited nano-TiO2","authors":"Jihong Jiang ,&nbsp;Han Wang ,&nbsp;Junlin Lin ,&nbsp;Zhiyong Liu ,&nbsp;Laibo Li ,&nbsp;Yali Li ,&nbsp;Zongjin Li ,&nbsp;Lingchao Lu ,&nbsp;Yunjian Li ,&nbsp;Zeyu Lu","doi":"10.1016/j.compositesb.2025.112524","DOIUrl":"10.1016/j.compositesb.2025.112524","url":null,"abstract":"<div><div>Previous studies primarily considered TiO₂ as a nano-filler to accelerate cement hydration due to the nucleation site effect. However, hydroxyl free radicals (•OH), released from TiO₂ under UV irradiation, also exhibit great potential to accelerate cement hydration owing to their high nucleophilicity arising from unpaired electrons. This study is the first to reveal the accelerating mechanism of •OH generated by photoexcited nano-TiO₂ on cement hydration. Current experimental results indicated that 5.0 wt% addition of photoexcited nano-TiO₂ (under 6 h of UV irradiation during the early curing stage) improved the dissolution rate of tricalcium silicate (C₃S) by 30 %, followed by a 35 % increase in the hydration degree of cement paste. More importantly, the polymerization degree and high-density content of C–S–H gels were also improved by 26 % and 13 %, accompanied by a 46 % reduction in porosity of the composites. All the aforementioned improvements were attributed to the presence of •OH generated by photoexcited nano-TiO₂, which significantly accelerated cement hydration by accelerating C₃S dissolution, facilitating faster nucleation and growth of C–S–H gels. In addition, the Density Functional Theory (DFT) calculations revealed that the accelerating effect of •OH on cement hydration may stem from the stronger interaction between •OH and the Ca ion on the C₃S surface compared to the water molecule, and the increased surface nucleophilicity due to the dispersion of unpaired elections from •OH to all the O ions in the surface layer. These findings provide a high-efficiency approach to accelerate cement hydration by photoexcited nano-TiO₂, thereby paving the way for the development of advanced and sustainable cement-based materials.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"301 ","pages":"Article 112524"},"PeriodicalIF":12.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834570","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 and fabrication of bionic Bouligand-structured SiC/2024Al composites via binder jetting additive manufacturing and pressure infiltration","authors":"Yuan Li ,&nbsp;Shijiang Zhong ,&nbsp;Mingfang Qian ,&nbsp;Xuexi Zhang ,&nbsp;Zhenggang Jia ,&nbsp;Lin Geng","doi":"10.1016/j.compositesb.2025.112526","DOIUrl":"10.1016/j.compositesb.2025.112526","url":null,"abstract":"<div><div>Metal matrix composites (MMCs) are widely used in high-end manufacturing. However, the tradeoff between the strength and toughness of these materials poses a problem. In this study, inspired by nature, bionic Bouligand-structured SiC/2024Al composites with a pitch angle in the range of 15°–45° were designed using SolidWorks software and prepared via binder jetting additive manufacturing and pressure infiltration. Their SiC content was about 11.6 vol%, and their porosity ranged from 1.59 % to 2.80 %. A periodic structure was confirmed from microstructural observations and a micro-computed tomography examination. Furthermore, a pitch-angle-related mechanical property was observed in the composites. In particular, finite element analysis showed that the 45°-pitch-angle composite had lower stress concentration and higher load carrying capacity than the composites with other pitch angles. After solution and aging treatment, nano-scale θ′ and S′ phases precipitated in the matrix, resulting in Orowan strengthening behavior. Consequently, the heat-treated 45°-pitch-angle composite showed a higher compressive strength of 741.59 MPa, a compressive strain exceeding 30 % and a <em>K</em>_IC value of 13.32 MPa m^1/2. The results of this study are expected to contribute to development of methods to overcome the strength-toughness tradeoff problem in MMCs.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"301 ","pages":"Article 112526"},"PeriodicalIF":12.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834569","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 surface modification on the interfacial properties of ultra-thin steel foils and CFRP co-curing without adhesive film:A comparative study of different techniques","authors":"Lei Chen ,&nbsp;Wei Zhu ,&nbsp;Qi Zhang ,&nbsp;Yanjie Zhang ,&nbsp;Chenchen Zhao ,&nbsp;Tao Wang ,&nbsp;Qingxue Huang","doi":"10.1016/j.compositesb.2025.112517","DOIUrl":"10.1016/j.compositesb.2025.112517","url":null,"abstract":"<div><div>Ultra-thin stainless-steel foil, renowned for its high strength, corrosion resistance, and excellent formability, shows significant promise in fiber metal laminates. However, enhancing the interfacial adhesion between ultra-thin stainless-steel foil (less than 0.05 mm thick) and CFRP remains a technical challenge. Metal surface pretreatment is crucial for determining the bonding quality of steel/CFRP interfaces. In this study, cold spraying and laser scanning techniques were used to pretreat 30 μm thick ultra-thin stainless-steel foil. The effects of different treatment processes, both individually and in combination, on the physical and chemical states of foil surface were systematically characterized, and their impact on the interface bonding properties of steel/CFRP was analyzed. By progressively optimizing the metal surface modification process based on laser scanning treatment, significant improvements were achieved in active site density on the metal surface, resulting in a single lap shear strength of 30.07 MPa for co-cured steel/CFRP laminate without adhesive film. Compared to untreated samples, there was an impressive increase of 210.32 % in interfacial bond strength. This study presents a straightforward and environmentally friendly solution to enhance the interfacial performance between ultra-thin stainless-steel foil and CFRP laminates.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"301 ","pages":"Article 112517"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834568","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 finite volume approach for general fully coupled anisotropic porous solid mechanics of fiber reinforcements in Liquid Composite Molding","authors":"Sarah Schlegel,&nbsp;Florian Wittemann,&nbsp;Luise Kärger","doi":"10.1016/j.compositesb.2025.112448","DOIUrl":"10.1016/j.compositesb.2025.112448","url":null,"abstract":"<div><div>In this work, a finite volume method is developed to capture the interaction between the infiltrating resin and the deforming fiber reinforcement in liquid composite molding (LCM). The method consists of three parts: (1) the fluid flow through a porous medium, which depends on the fiber volume fraction (FVF) and the fiber orientation, (2) the solid mechanics of the porous fiber structure considering the general anisotropic material stiffness, which also depends on the FVF and the fiber orientation, and (3) an internal coupling approach to couple porous solid mechanics and fluid flow with an iterative scheme. An anisotropic model of porous solid mechanics is proposed and verified in a unidirectional case to capture fluid-induced deformations of the porous medium. In a second verification case, the stress state is verified in an open-hole tensile test against an analytical solution for different degrees of material anisotropy. Finally, the infiltration and compaction predictions of the model are validated against experimental data from the literature using a three-dimensional plate. In addition, the infiltration behavior with the anisotropic model is compared to the isotropic model to illustrate the advantage of the new approach.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112448"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869226","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":"MXenes and their composites for high-performance detection of pharmaceuticals and pesticides: A comprehensive review","authors":"Ishika Rana ,&nbsp;Vishnu Kumar Malakar ,&nbsp;Kumar Rakesh Ranjan ,&nbsp;Chandrabhan Verma ,&nbsp;Akram AlFantazi ,&nbsp;Prashant Singh ,&nbsp;Kamlesh Kumari","doi":"10.1016/j.compositesb.2025.112521","DOIUrl":"10.1016/j.compositesb.2025.112521","url":null,"abstract":"<div><div>The increasing concerns over environmental pollution and human health hazards caused by pesticides and pharmaceutical residues have driven significant research into the development of highly sensitive and selective electrochemical sensors. MXenes, a class of two-dimensional (2D) transition metal carbides and nitrides along with MXene-based composites, have emerged as promising candidates for electrochemical sensing due to their unique physicochemical properties, including high electrical conductivity, large surface area, hydrophilicity, and tunable surface chemistry. Herein, we have comprehensively discussed the role of MXenes and their composites in the electrochemical detection of drugs and pesticides. Further, they can be classified based on their structural dimensions and explore their fundamental properties, including conductivity, electrochemical stability, mechanical integrity, and chemical reactivity, which govern their sensing performance. However, MXenes can be easily oxidized and undergo gradual structural degradation, which may impact performance over a long time. Therefore, the need for MXene-based composites is highlighted to address the limitations of pristine MXenes and enhance their selectivity, stability, and sensitivity for detecting trace-level analytes. The recent advancements in MXenes modified electrochemical sensors for detecting pesticides and drugs, critically analyzing their sensing mechanisms, detection limits, and response times.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112521"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854786","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 novel biomimetic strategy for improving lubrication performances of modified UHMWPE inspired by the slippery gel release behavior of chia seeds","authors":"Zhanmo Zheng ,&nbsp;Conglin Dong ,&nbsp;Xiuqin Bai ,&nbsp;Chengqing Yuan ,&nbsp;Tun Cai","doi":"10.1016/j.compositesb.2025.112520","DOIUrl":"10.1016/j.compositesb.2025.112520","url":null,"abstract":"<div><div>Friction, wear, and their induced vibrations are the major problems observed in water-lubricating polymer components of mechanical equipment, as achieving effective lubricating films remains challenging due to the low viscosity and surface tension of water. Inspired by the self-protection mechanism of chia seeds, which release slippery mucilage under aqueous conditions, a novel biomimetic composite composed of natural chia seed polysaccharide (CSP) and ultrahigh molecular weight polyethylene (UHMWPE) is proposed. Because of its hydrophilicity, CSP within the composite can easily attract water molecules through non-covalent interactions in aqueous conditions, leading to its softening, swelling, and exudation to hydrate and form a gel layer with lubricating and protective effects at the friction interface, which is similar to the behavior of chia seeds in releasing gels. The resultant composite achieves a low coefficient of friction (COF) (below 0.031), which is attributable to the synergistic effect of fluid and hydration lubrication provided by the improvement in hydrophilicity, the increase in viscosity of the water-lubricating medium, and the formation of the hydration lubrication layer. This biomimetic strategy opens up a new avenue for treating the problems of insufficient lubrication, and the proposed composite shows potential for mitigating the friction-induced vibration and noise behaviors of underwater mechanical devices.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"301 ","pages":"Article 112520"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834565","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":"Optimization of high strength CF/LM-PAEK thermoplastic composite tube manufacturing parameters using the Taguchi Method and experimental verification","authors":"Kamran Samet ,&nbsp;Harun Koçak ,&nbsp;Çetin Karataş ,&nbsp;Erkutay Taşdemirci","doi":"10.1016/j.compositesb.2025.112518","DOIUrl":"10.1016/j.compositesb.2025.112518","url":null,"abstract":"<div><div>A novel vacuum-free method was developed for producing thermoplastic composite tubes using woven carbon fiber/LM-PAEK. The effects of consolidation pressure, temperature, time, heating, and cooling rates were investigated through a Taguchi L16 design. Tensile, compressive strength, and density results were analyzed to determine optimal parameters, supported by Grey Relational Analysis (GRA). The optimized sample, verified through mechanical testing, DSC, radiographic, and SEM analysis, achieved 626.93 MPa tensile and 329.44 MPa compressive strength. The developed method allows the use of woven prepregs, enabling longitudinal fiber alignment that enhances tensile strength compared to angled fiber arrangements in filament winding. It requires only a hot press and mold, eliminating the need for high-temperature vacuum bags, airways, and sealing tapes. These advantages make the method a simple, economical, and effective alternative for fabricating aerospace-grade composite tubes.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112518"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854784","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":"Hierarchical porous kapok fiber composite aerogel with Helmholtz resonant cavity for low-frequency sound absorption","authors":"Liting He ,&nbsp;Lulu Song ,&nbsp;Jing Fang ,&nbsp;Hao Li ,&nbsp;Ming Luo ,&nbsp;Qixiu Cheng ,&nbsp;Xiaoang Liu","doi":"10.1016/j.compositesb.2025.112523","DOIUrl":"10.1016/j.compositesb.2025.112523","url":null,"abstract":"<div><div>The demand for advanced materials with low-frequency sound absorption, pressure resistance, and thermal insulation is increasing, particularly in aerospace, high-speed rail, and luxury automotive sectors. However, the functional limitations of current materials hinder their broader application in high-end industries. To solve this problem, this study combines a hierarchical porous biomass aerogel with a resonant cavity to create a Helmholtz resonance sound absorption structure. This design aims at achieving multiple functions, including low-frequency sound absorption, heat insulation, and pressure resistance capability. The sound absorption structure is composed of porous biomass aerogel instead of the traditional perforated plate and cavity. Among them, the hierarchical porous biomass aerogel is obtained from delignified kapok fiber and activated carbon crosslinked by gelatin. The influence of activated carbon concentration, resonant cavity depth and aerogel perforation rate on the low-frequency sound absorption effect in this aerogel is explored. The sound absorption structure demonstrates excellent low-frequency sound absorption performance. Additionally, the aerogel exhibits thin (the thickness of the aerogel material is 10 mm, the sound absorption structure is 30 mm), high compressive strength, and low thermal conductivity. This study provides a new idea for the preparation of multifunctional low-frequency sound absorption materials.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"301 ","pages":"Article 112523"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844790","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":"Micromechanical study on freeze-thaw cycling hygromechanical properties of continuous fiber-reinforced thermoplastic composite prepreg filaments for 3D printing","authors":"Long Fu ,&nbsp;Weijun Zhu ,&nbsp;Jinshan Li ,&nbsp;Yingying Zhang ,&nbsp;Quan Zhi ,&nbsp;Peng Yu ,&nbsp;Zhikun Zhang ,&nbsp;Wang Ning ,&nbsp;Shiping Ouyang ,&nbsp;Dongsheng Li","doi":"10.1016/j.compositesb.2025.112529","DOIUrl":"10.1016/j.compositesb.2025.112529","url":null,"abstract":"<div><div>Continuous fiber-reinforced thermoplastic composites are widely used in aviation, aerospace, and automotive applications due to the high specific strength, modulus, and design flexibility. However, their properties are susceptible to damage in extreme environments. This study investigates the microscopic property changes of 3D printing thermoplastic composites in service environments with freeze-thaw cycling. we have established the relationship between interfacial crack damage in composites and the mechanical properties of sub-mm-scale prepreg fibers through experiment and simulation.</div><div>By analysis of grayscale of AFM modulus map, the interfacial crack (interfacial porosity) size evolution law at the fiber-resin matrix interface was investigated. At the micro-scale, the degree of damage at the interface is strongly correlated with the shear properties of the interface, which were derived from micro-debonding experiments. At the sub-mm-scale, the mechanical properties of flexural and axial compressive strengths are sensitive to the extent of interfacial crack damage, as numerical simulation results have also predicted. Conversely, axial tensile strength is minimally affected. Furthermore, it was found that the mechanical properties of the prepreg filaments decreased significantly after re-absorption of water after freeze-thaw cycling, especially the flexural and axial compression properties decreased by 73.2 % and 92.8 %, respectively.</div><div>Therefore, this paper designed carbon fiber/polyamide-covered-polypropylene (CF/PA-PP) water-resistant prepreg filaments with core-shell structure to reduce water absorption. The core-shell CF/PA-PP filament's mechanics are comparable to those of the CF/PA filament, with strengths of 2010.2 MPa, 1081.2 MPa, and 427.0 MPa, and it has reduced water absorption from 6.8 % to 0.4 %, demonstrating its promising application in the field of 3D printing of water-resistant thermoplastic composites.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"301 ","pages":"Article 112529"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839671","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":"Highly thermal conductivity phase change composites enabled by SiCw reinforced graphite foam dual-network for high-efficiency thermal harvesting","authors":"Hongwei Zhong ,&nbsp;Zhuo Deng ,&nbsp;Ke Wang ,&nbsp;Qin Zhang ,&nbsp;Jianguang Guo ,&nbsp;Baoliu Li ,&nbsp;Hui Zhu ,&nbsp;Xuanke Li","doi":"10.1016/j.compositesb.2025.112496","DOIUrl":"10.1016/j.compositesb.2025.112496","url":null,"abstract":"<div><div>Phase change composites (PCCs) for the thermal management of high-energy density device are required to have large heat storage capacity and rapid heat conduction and dissipation ability. A graphite foam (GF)/silicon carbide whiskers (SiCw) dual-network skeleton with abundant pore capacity for loading paraffin wax (PW) was designed and fabricated. The highly oriented carbon walls of GFs as the main channels for fast thermal transportation and SiCw formed in GF pores as the secondary heat conductive networks provide GF-SiCw/PW with highly efficient thermal energy harvesting and releasing ability. The prepared GF-SiCw-2 composite loaded with 48.99 wt% of PW exhibits an excellent thermal conductivity of 249.7 W m⁻¹ K⁻¹ and fast thermal response characters. In addition, finite element simulation confirmed that the SiCw network could significantly improve the uniformity of heat transfer inside the PCCs. No PW leakage, homogeneity and superior phase change behavior were observed in GF-SiCw-2/PW. The excellent battery thermal management of GF-SiCw-2/PW was also confirmed. This innovative structure design suggests an efficient route for the development of phase change thermal management system with high heat conductivity, and shows extensive application prospects.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"301 ","pages":"Article 112496"},"PeriodicalIF":12.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828899","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}