Composites Communications最新文献

{"title":"In-situ fabrication of a strong and stiff MgAl2O4/Al-based composite","authors":"","doi":"10.1016/j.coco.2024.102115","DOIUrl":"10.1016/j.coco.2024.102115","url":null,"abstract":"<div><div>The Al-Mg-B₂O₃ composites were synthesized via a combination of ball-milling, sintering, and hot extrusion, with in-situ formed MgAl₂O₄ and MgAlB₄ particles distributing along grain boundaries. The Al-5Mg-10B₂O₃ composite demonstrated exceptional mechanical properties, including a yield strength of 535 MPa, ultimate tensile strength of 558 MPa, Young's modulus of 88.8 GPa, and a density of 2.84 g/cm³. The strengthening mechanisms were analyzed, with dislocation strengthening contributing most, primarily due to the formation of MgAl₂O₄ nanoparticles.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave absorption characterization of hollow and porous rGO-FeCoNiCrMn/EC/EP composite microsphere materials","authors":"","doi":"10.1016/j.coco.2024.102120","DOIUrl":"10.1016/j.coco.2024.102120","url":null,"abstract":"<div><div>Multi-material composite can effectively realize the lightweight, broadband and strong absorption requirements of microwave-absorbing materials. In this paper, hollow porous rGO-FeCoNiCrMn/EC/EP composite microwave-absorbing microspheres were prepared by the microemulsion method. EC and EP refer to ethyl cellulose and epoxy resin, respectively, which are mainly used as wall skeleton and core material in the formation of composite microspheres.The rGO-FeCoNiCrMn/EC/EP composite microspheres have abundant hollow porous structures, which provide good impedance-matching properties for the microwave-absorbing materials, and are favorable for enhancing the multiple reflection and scattering of microwaves. The multi-material composite constructs abundant dielectric/magnetic heterogeneous interfaces, which is conducive to increasing the microwave-absorbing properties of the materials. The excellent microwave-absorbing properties of composites stem from the fact that the materials possess a wealth of EM loss mechanisms, such as dipole polarization, interfacial polarization, conductive loss, natural resonance, exchange resonance, and eddy current loss. The effective absorption bandwidth of the composite microspheres reached 5.2 GHz (10.4∼15.6 GHz) at 2.5 mm thickness when the rGO content was 2.8 wt%. The composite microspheres with rGO content of 5.4 wt% and thickness of 2.5 mm achieve a minimum reflection loss of -50.46 dB at 10.08 GHz, and an effective absorption bandwidth of 3.6 GHz (11.2∼14.8 GHz) at a thickness of 1.5 mm. Variations in material thickness in the range of 1∼5 mm allow effective absorption of electromagnetic(EM) microwaves in the 4∼18 GHz band, i.e. almost the entire C, X and Ku bands. Finally, the rGO-FeCoNiCrMn/EC/EP composite microspheres were tested by RCS simulation. The simulation results show that the rGO-FeCoNiCrMn/EC/EP composite microspheres have the wide-angle absorption characteristics of EM microwave. The composites with rGO content of 5.4 wt% can realize the RCS below -10 dBm² over the whole range when the incidence angle of EM microwaves varies in the range of -90° &lt; θ &lt; 90°, and the composites with rGO content of 6.7 wt% and 7.9 wt% can realize the RCS below -10 dBm² in the range of 95.5% of the incidence angle. In this paper, the preparation and microwave-absorbing mechanism of rGO-FeCoNiCrMn/EC/EP composites is investigated, which provides a new solution for the preparation of highly efficient broadband EM microwave-absorbing materials with a wide range of application prospects.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Thermal Interface Composites with Enhanced Thermal Conductivity, EMI Shielding Capabilities, and Mechanical Performance","authors":"","doi":"10.1016/j.coco.2024.102116","DOIUrl":"10.1016/j.coco.2024.102116","url":null,"abstract":"","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of machining environments on the crack behavior of ZrO2-Al2O3 composite during short-pulsed laser processing","authors":"","doi":"10.1016/j.coco.2024.102119","DOIUrl":"10.1016/j.coco.2024.102119","url":null,"abstract":"<div><div>The ZrO₂-Al₂O₃ exhibits distinct behavior compared to monolithic ceramics when exposed to stress. The compelling quality of this trait makes it well-suited for any demanding supporting application that necessitates resilience. However, under a thermal process, it might cause functional concerns such as cracking patterns, which pose a threat to the endurance of orthopedic implants. This issue has lately attracted medical scrutiny. Being a thermal process, fiber laser treatment of ZrO₂-Al₂O₃ is more complex than monolithic ceramic because of its unique thermal characteristics and varied rates of absorption, which rely on the matrix and the reinforcement material. This research aims to scrutinize the divergent characteristics of ZrO₂-Al₂O₃ in terms of crack behavior while treating it with the same laser fluence under auxiliary environments. It has been found that ZrO₂-Al₂O₃ prone to form cracks when processed under high-temperature environments due to the development of stress during phase transformation because of prolonged exposure, as evidenced by the surface characterization results. Meanwhile, when it was processed at low-temperature environments like water and ice, the detrimental effect of laser fluence factor appeared to be meager by reducing the likelihood of phase transformation and crack quantity. With this, the research demonstrates a promising approach that effectively maintains the overall structural integrity of ZrO₂-Al₂O₃ by impeding the progression of the cracks along with a smooth, flawless surface during laser processing.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the need to better control tooling in prepreg Automated Fibre Placement (AFP) deposition","authors":"","doi":"10.1016/j.coco.2024.102114","DOIUrl":"10.1016/j.coco.2024.102114","url":null,"abstract":"<div><div>Efficient tack between ply and tooling is crucial for achieving accurate, defect-free and reliable placement of prepreg in Automated Fibre Placement (AFP). However, current industry practices for choosing AFP tooling's material almost never account for this. The present contribution makes the scientific case for a more careful accounting of tack in the choice of AFP tooling material. Employing a modified probe test method, tack between prepreg, specifically Hexcel IM7-8552, and various tool surfaces was characterised. The effect of the roughness and material types on tack and its further influence on AFP deposition was investigated. The study shows that different materials have varying traction-separation behaviour, with metals showing higher values than composite materials. Release agent-treated samples exhibited the lowest tack, making them unsuitable for directly used in AFP. It is concluded that, by better considering tack, engineers can tailor their tooling material to enhance the quality and reliability of the deposition process.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A readily accessible quaternized cellulose filter paper with high permeability for IgG separation","authors":"","doi":"10.1016/j.coco.2024.102112","DOIUrl":"10.1016/j.coco.2024.102112","url":null,"abstract":"<div><div>Anion-exchange chromatography (AEC) is recognized as a highly effective approach for the purification of immunoglobulin G (IgG). This study introduces an innovative strategy that employs waste cellulose filter paper in the production of AEC media. A quaternized cellulose fiber membrane (CFM-QCS) was successfully fabricated that cellulose fibers were as a structural framework, glutaraldehyde (GA) as a crosslinking agent, and quaternary chitosan (QCS) as a modifying agent. Morphological and chemical characterization revealed that GA and QCS were uniformly crosslinked on the surface of the cellulose fibers, resulting in excellent mechanical properties in both dry and wet states. Benefiting from its 3D network scaffold structure, CFM-QCS demonstrated a high adsorption capacity for bovine serum albumin (BSA), with static and dynamic adsorption capacities of 605.15 mg/g and 88.63 mg/ml, respectively. After treated with extreme conditions and 10 cyclic adsorption and elution, the adsorption capacity of CFM-QCS remains almost unchanged, highlighting its excellent stability. Additionally, a CFM-QCS packed chromatography column exhibited high flux of 10.38 L/h at 0.1 MPa, which can efficiently separate IgG from a mixed solution in the presence of BSA and IgG by gravity-driven. This work presents a straightforward approach for preparing high-performance ion-exchange chromatography membranes for IgG separation.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface engineering of Q235 carbon steel through a superamphiphobic composite coating enabling robust corrosion resistance and antifouling","authors":"","doi":"10.1016/j.coco.2024.102113","DOIUrl":"10.1016/j.coco.2024.102113","url":null,"abstract":"<div><div>Developing an efficient strategy to ensure the resistance of corrosion on Q235 carbon steel from liquid-based contaminants is a challenging work. Although superhydrophobic and superamphiphobic coatings have been fabricated, their susceptibility to oily liquids and poor mechanical robustness still limits their ability to tackle corrosion. Herein, the synthesis and fabrication of a new robust superamphiphobic nanocomposite was presented by combining the reinforcement properties of silicon oxide and the mechanical and thermal stability of zinc oxide into a polytetrafluoroethylene polymer matrix via a colloidal homogenization route. The newly developed composite exhibits a hierarchical bumpy structure, leading to excellent water and oil repellent properties. Importantly, the composite possesses a robust mechanical stability to sandpaper abrasion over a distance of 2000 cm under a 100 g load and a stronger adhesion to substrate. As a result, Q235 coated with this composite exhibits an excellent corrosion resistance in saline water for up to 120 days, and a good self-cleaning and antifouling abilities in most corrosive media. This finding reveals a new pathway for resisting the corrosion attacks on Q235 carbon steel and thereby rendering this strategy with practical application in industrial and marine settings.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Curved surface coupled structural battery composites manufactured by resin transfer molding process: Microstructure and multifunctional performance","authors":"","doi":"10.1016/j.coco.2024.102111","DOIUrl":"10.1016/j.coco.2024.102111","url":null,"abstract":"<div><div>To bridge industrial production and lab-scale research, this work demonstrates a technology to manufacture curved surface structural battery composites (CSBCs) that can simultaneously achieve electrochemical energy storage and load-bearing. The curved-surface carbon fiber structural anode and cathode are fabricated by coating the active materials on carbon fiber fabric with a vacuum-bag-assisted technique. The resin transfer molding (RTM) process is conducted to manufacture the coupled CSBCs by infusing bi-continuous phase epoxy resin electrolyte and curing at high temperatures. The microstructure of structural electrodes and CSBCs is characterized by scanning electron microscopy (SEM). Due to good interfacial compatibility between high mechanical strength carbon fiber structural electrode and high ionic conductivity solid polymer electrolyte bulk for load support, the fabricated CSBCs demonstrate a high density of 294 mWh kg⁻¹ based on the whole mass of devices, a tensile strength of 257.4 MPa with Young's modulus of 12.9 GPa and a flexural strength of 194.1 MPa with flexural modulus of 11.1 GPa. In situ electrochemical-mechanical tests further confirm the durability of CSBCs under mechanical loads with a multifunctional efficiency of 1.07, suggesting the effectiveness of the introduced manufacturing techniques for coupled structural battery composites.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrosion resistance and long-term antibacterial performance of ZnO-Al2O3 nanocomposite coatings on aluminum alloy","authors":"","doi":"10.1016/j.coco.2024.102110","DOIUrl":"10.1016/j.coco.2024.102110","url":null,"abstract":"<div><div>Anodic aluminum oxide-zinc (AAO-Zn) coatings were prepared on aluminum (Al) alloy substrates through anodization and nZnO deposition. Further heat treatment at various temperature is applied to the composite coatings. Among the samples, AZ-250 sample showed lower corrosion current density (1.127 × 10⁻⁸ A/cm²) and higher charge-transfer resistance (4.65 × 10⁵ Ω cm²) compared to the AZ-150 and AZ-350 samples. At 250 °C, a greater incorporation of nZnO into the AAO layer facilitated the fusion of ZnO with aluminum oxide, resulting in a denser and more protective coating. The antibacterial research revealed AZ-250 sample achieved a 100 % reduction of <em>S. aureus</em> and 97.9 % of <em>E. coli</em> within 2 h. Even after 40 days of air exposure, the AZ-250 sample maintained high antibacterial effectiveness due to ZnO attachment and sustained Zn²⁺ release from the nanoporous AAO structure. This nanocomposite is suitable for applications in heat exchangers, medical instrument casings, and transport structure.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of vanillin-based polyurethane/SiO2 nanocomposite foams with excellent flame retardancy and thermal insulation performance","authors":"","doi":"10.1016/j.coco.2024.102108","DOIUrl":"10.1016/j.coco.2024.102108","url":null,"abstract":"<div><div>In this work, vanillin based inherently flame retardant polyurethane/SiO₂ composite foams were designed. Firstly, the vanillin based flame retarding diol (VDP) was synthesized. Then, the KH550 modified nano-SiO₂ (KH550-g-SiO₂) was prepared as the reinforcement. Subsequently, a series of flame-retardant polyurethane/SiO₂ composite foams (PUF-0.5P-<em>x</em>SiO₂) were synthesized by tailoring the hard-soft segments and KH550-g-SiO₂ contents. The results showed that KH550-g-SiO₂ significantly improve the thermal stability of the PUF-0.5P-<em>x</em>SiO₂ foams. In addition, the compressive strength of PUF-0.5P-<em>x</em>SiO₂ foams was enhanced from 0.18 MPa (PUF-0.5P) to 0.45 MPa (PUF-0.5P-2.0SiO₂) under 20 % strain. The flame retardant properties of PUF-0.5P-2.0SiO₂ reached UL-94 V-0 grade. Meanwhile, the addition of KH550-g-SiO₂ also decreased the thermal conductivity from 0.046 W/m·k to 0.037 W/m·k for PUF-0.5P-2.0SiO₂. This work may provide an approach to obtain the biobased lightweight polyurethane foams for the application in packaging and building areas.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}