Composites Communications最新文献

{"title":"In-situ formation of SiC nanowires for self-healing ceramic composites using liquid silicone resin","authors":"Hao Zhang ,&nbsp;Minghui Li ,&nbsp;Shan He ,&nbsp;Yi Zhou ,&nbsp;Zhigang Yang ,&nbsp;Jianbo Yu ,&nbsp;Xiaoxin Zhang ,&nbsp;Zhongming Ren","doi":"10.1016/j.coco.2025.102336","DOIUrl":"10.1016/j.coco.2025.102336","url":null,"abstract":"<div><div>Ceramic shells are essential for fabricating turbine blades in aero-engines via directional solidification and are required to have excellent mechanical properties and low linear expansion rates for industrial production. However, defects in traditional processes lead to the propagation of interlayer microcracks, which limit the performance of the ceramic shells and fail to meet the high-temperature service requirements. Therefore, this study aims to address these issues by using liquid silicone resin for crack self-healing in the ceramic matrix. The results demonstrated that cracks in the green shells were healed through the inherent bonding properties of the liquid silicone resin. During the high-temperature sintering process, the pyrolyzed SiO₂ content rose with higher liquid silicone resin content, forming a bonding phase between the particles. Moreover, in-situ formed network-like SiC nanowires, generated from the pyrolysis of the silicone resin precursor, became the dominant mechanism for crack healing. Thus, the minimum linear expansion in the x- and y-axis directions of the samples was measured as 0.93 % and 0.15 %, respectively, at 32 wt% liquid silicone resin content and a sintering temperature of 1500 °C, with a maximum bending strength of 21.96 MPa. This research provides valuable insights into improving the mechanical performance and shortening the fabrication cycle of ceramic shells, with potential applications in high-temperature engineering components.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102336"},"PeriodicalIF":6.5,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610146","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":"3D printed polyimide-based composite aerogels with shape memory and thermal insulation properties","authors":"Zhipeng Fu ,&nbsp;Dingyi Yu ,&nbsp;Tiantian Xue ,&nbsp;Xu Zhang ,&nbsp;Wei Fan","doi":"10.1016/j.coco.2025.102335","DOIUrl":"10.1016/j.coco.2025.102335","url":null,"abstract":"<div><div>As a new type of lightweight, porous and intelligent deformation material, shape memory polyimide aerogel has a wide range of applications in extreme environments. However, due to the limitation of rheological properties and printing resolution, the formability of polyimide (PI) aerogel via 3D printing is poor. Herein, we report a 3D printed polyimide/silica composite aerogel with good shape memory and intelligent thermal management performance. The silica aerogel particles (SAP) can be used as a rheological modifier to adjust the rheological properties of the composite ink as well as regulate the pore structure of the aerogel and inhibit heat conduction to maintain the thermal insulation performance. Furthermore, 3D printing technology is used to construct shape memory polyimide aerogel composites with various programming structures. The obtained PI/SAP composite aerogels show a shape fixation and recovery ratio of more than 93 %, and excellent thermal insulation and fire-retardant performance, which shows great potential for application in lightweight and high-performance intelligent thermal insulation technologies.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102335"},"PeriodicalIF":6.5,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600728","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":"Ionic liquid-modified MXene quantum dots imparting self-healing and antibacterial properties to commercial polyurethane","authors":"Jiahui Zhong ,&nbsp;Songchao Zhang ,&nbsp;Yu He ,&nbsp;Haosen Ma ,&nbsp;Xiangdong Liu ,&nbsp;Yuming Yang ,&nbsp;Yinglu Sun","doi":"10.1016/j.coco.2025.102334","DOIUrl":"10.1016/j.coco.2025.102334","url":null,"abstract":"<div><div>The simultaneous integration of self-healing capabilities and exceptional mechanical properties in materials remains a significant challenge in research. This study proposes a novel approach to address this issue by imparting self-healing functionality to commercial polyurethane without compromising its inherent mechanical strength. Ionic liquids were electrostatically adsorbed onto the surface of MXene quantum dots, triggering their reaction to form poly (ionic liquid)-coated MXene (MQDs@IL). These MQDs@IL were incorporated into commercial polyurethane, where hydrogen bonding interactions between the poly (ionic liquid) and the molecular chains in polyurethane, along with dynamically reversible ionic aggregates, facilitated molecular chain rearrangement. As a result, the modified polyurethane demonstrated an impressive self-healing efficiency of up to 80%. Additionally, the composite material exhibited enhanced mechanical properties, including increases in fracture strength and elongation at break by 9% and 14%, respectively, achieving a toughness of 294 MJ/m³. Furthermore, the modified polyurethane showed significant improvements in thermal stability and flame retardancy, alongside effective antibacterial properties against Escherichia coli and Staphylococcus aureus. These advancements not only extend the application range and service life of commercial polyurethane but also provide a promising strategy for the development of multifunctional self-healing materials.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102334"},"PeriodicalIF":6.5,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577837","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":"Enhanced thermal conductivity of aluminum oxide /Polyphenylmethyldimethylsiloxane composites via boron nitride-encapsulated graphene","authors":"Mingming Sheng ,&nbsp;Jie Jing ,&nbsp;Hongyu Gong ,&nbsp;Jincheng Yu ,&nbsp;Jianqiang Bi ,&nbsp;Weibin Zhang ,&nbsp;Junbin Lu ,&nbsp;Haoyu Fang ,&nbsp;Yijie Zhou ,&nbsp;Yantao Zhang ,&nbsp;Yang Bai ,&nbsp;Yujun Zhang","doi":"10.1016/j.coco.2025.102333","DOIUrl":"10.1016/j.coco.2025.102333","url":null,"abstract":"<div><div>Polyphenylmethyldimethylsiloxane (PPMS) is rendered as an ideal thermal interface material matrix due to its superior electrical insulation properties and thermal stability. Nevertheless, the intrinsically low thermal conductivity (TC) poses challenges in meeting the heat dissipation demands of electronic components, necessitating the incorporation of thermally conductive fillers to achieve further enhancement. In this work, the TC of PPMS is synergistically enhanced by incorporating the graphene (Gr) encapsulated by boron nitride (BN) (BN@Gr) as well as aluminum oxide (Al₂O₃) coated with liquid metal gallium. Benefiting from the modified thermal conduction networks, the TC of the composite with 4.8 wt% BN@Gr and 79.2 wt% Al₂O₃ reaches 1.85 W/m·K, about 0.5 W/m·K higher than that of the composite containing 84 wt% Al₂O₃; this value is nearly 11 times greater than the TC of the PPMS matrix. Furthermore, the as-prepared composite exhibits high initial thermal decomposition temperature (519 °C), outstanding electrical insulation resistance (4.3 × 10¹² Ω cm) and good compressive strength (0.43 MPa at 20 % strain). This work provides a facile strategy to produce BN encapsulated Gr powders, which facilitates the rapid formation of thermal conduction pathways within the Al₂O₃/PPMS composites.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"55 ","pages":"Article 102333"},"PeriodicalIF":6.5,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550797","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":"High-proportion intragranular nano-Al2O3 induced high strength-ductility Al matrix nano-composites via additive friction extrusion deposition","authors":"Zhou Xl ,&nbsp;Liu Zy ,&nbsp;Liu Fc ,&nbsp;Xiao Bl ,&nbsp;Ma Zy","doi":"10.1016/j.coco.2025.102332","DOIUrl":"10.1016/j.coco.2025.102332","url":null,"abstract":"<div><div>Herein, a novel additive friction extrusion deposition (AFED) solid state additive manufacturing technique was employed to fabricate nano-Al₂O₃/2009Al composite. The severe plastic deformation introduced by AFED led to a uniform dispersion of nano-Al₂O₃ and a significant grain refinement to less than 500 nm in average grain size due to the pinning effect of the dispersed nano-Al₂O₃ particles. As high as 78 % nano-Al₂O₃ particles were observed within the refined grains, rather than along the grain boundaries as previously reported. The unique microstructure with high proportion of intragranular nano-Al₂O₃ particles accumulated dislocations in grain interior, induced pronounced work hardening, thereby achieving high strength-ductility and relatively low yield strength to tensile strength ratio of 0.78 in the AFED Al₂O₃/2009Al composite.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"55 ","pages":"Article 102332"},"PeriodicalIF":6.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550796","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":"A unique polymer-based composite coating with superior corrosion resistance under high-pressure CO2 environment","authors":"Bin Du ,&nbsp;Yue Sun ,&nbsp;Zexi Shao ,&nbsp;Luchao Pei ,&nbsp;Jiapeng Deng ,&nbsp;Sicheng Yuan ,&nbsp;Jialong Cui ,&nbsp;Hongda Zhou ,&nbsp;Yanji Zhu ,&nbsp;Huaiyuan Wang","doi":"10.1016/j.coco.2025.102330","DOIUrl":"10.1016/j.coco.2025.102330","url":null,"abstract":"<div><div>Corrosion in CO₂-enhanced oil recovery (CO₂-EOR) projects has aroused wide attention for its typical environment of high-pressure CO₂ and high-concentration Cl⁻ solution where the application of conventional corrosion protective coatings was severely limited. The structure integrity and corrosion protective performance are greatly weakened by acid, high-pressure water and gas in the environment. Here, we prepared a novel reinforcement composite filler by bridging glass flakes (GF) and carbon nanotubes (CNT) with 3-aminopropyltriethoxysilane (APTES), and then introduced them into EP resin to obtain the superior coating named MGF@CNT/EP. The novel composite coating shows superior barrier capability due to the combination of \"maze effect\" of GF and the \"capture effect\" of CNT. Moreover, the addition of hybridized fillers greatly enhanced the structure strength and adhesion value between coating/steel interface. Consequently, the composite coating exhibits improved interfacial stability, superior gas barrier property and long-time anti-corrosion performance even in harsh high-pressure CO₂ environments. The |Z|_0.01 Hz after high-pressure CO₂ anti-corrosion test was 1.58 × 10¹¹ Ω cm², representing a high level of corrosion resistance. Additionally, MGF@CNT/EP coating achieved excellent acid durability (|Z|_0.01 Hz maintaining 2.58 × 10¹¹ Ω cm² in 21 days), low water absorption (1.87 wt% in 15 days) and CO₂ permeability (approximately 81.47 % decrease in comparison with pure EP coating). This study shows that the performances of coatings in the above three experiments mutually affect its application in high-pressure CO₂ anti-corrosion environment, which is expected to guide the design evaluation of composite coatings in CO₂-EOR projects.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"55 ","pages":"Article 102330"},"PeriodicalIF":6.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550798","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":"Microstructure and properties of Ti/TiO2@SiC/Ti6Al4V composites by selective laser melting","authors":"Yongli Guo ,&nbsp;Zhanyong Zhao ,&nbsp;Wenbo Du ,&nbsp;Peikang Bai ,&nbsp;Mengru Liu","doi":"10.1016/j.coco.2025.102331","DOIUrl":"10.1016/j.coco.2025.102331","url":null,"abstract":"<div><div>In this study, Ti/TiO₂ composite coatings were fabricated on SiC substrates via organic chemical reduction and magnesiothermic reduction. SiC fiber-reinforced titanium matrix composites were subsequently prepared by selective laser melting (SLM). Systematic investigations reveal that the Ti/TiO₂ coatings significantly enhance interfacial compatibility between SiC and the titanium matrix, thereby strengthening interfacial bonding in Ti/TiO₂@SiC/Ti6Al4V composites. The coatings further act as effective nucleation sites, promoting accelerated grain growth and transforming the composite microstructure from fine equiaxed grains to randomly oriented acicular grains, effectively reducing material anisotropy. Enhanced interfacial integrity was shown to mitigate SiC detachment during friction processes, reducing abrasive wear and improving wear resistance, while enabling efficient load transfer for superior hardness and strength. Furthermore, the coated composites exhibited markedly improved corrosion resistance compared to their uncoated counterparts.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"55 ","pages":"Article 102331"},"PeriodicalIF":6.5,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528653","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":"A novel strategy to endow aluminum trihydrate-filled ethylene vinyl acetate composite with excellent flame retardancy, mechanical property and acid/alkali corrosion resistance concurrently","authors":"Haoqi Xing ,&nbsp;Zhuoli Yu ,&nbsp;Mengna Liu ,&nbsp;Xuefan Yang ,&nbsp;Jichun Liu ,&nbsp;Haibo Chang ,&nbsp;Bingli Pan","doi":"10.1016/j.coco.2025.102329","DOIUrl":"10.1016/j.coco.2025.102329","url":null,"abstract":"<div><div>Low efficiency and poor acid/alkali corrosion resistance are the main drawbacks of aluminum trihydrate (ATH) as a flame retardant to polymers. Herein, ethylene vinyl acetate (EVA) was chosen as polymer matrix and a blend of EVA18 (EVA with 18 % VA) and EVA40 (EVA with 40 % VA) was crosslinked properly. A composite flame retardant of microencapsulated expandable graphite/microencapsulated red phosphorus (MEG/MRP) was introduced to crosslinked EVA (CLEVA) blend/ATH composite. The obtained CLEVA blend/ATH/MEG/MRP composite was investigated regarding its various properties. Results evince that up to 65 wt% ATH has to be used in order to confer adequate flame retardance on EVA due to its low efficiency, and the mechanical performance of EVA is worsened markedly. The CLEVA blend/ATH/MEG/MRP composite with 24 wt% ATH, 5 wt% MEG and 1 wt% MRP shows excellent flame retardancy, mechanical property, acid/alkali corrosion resistance and electrical insulation concurrently. Especially, both strength and elasticity of flame-retarded CLEVA blend/ATH/MEG/MRP composite are better than those of neat EVA. Remarkable synergism between ATH and MEG/MRP is found in CLEVA, which has increased flame-retardant efficiency significantly. The increase in mechanical property derives mainly from crosslinking of polymer blend and the intumescent char produced by MEG upon combustion contributes greatly to the enhanced flame retardancy and corrosion resistance. This work develops a simple and novel strategy to overcome the handicaps of ATH and acquires flame-retarded EVA/ATH composite with excellent comprehensive properties.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"55 ","pages":"Article 102329"},"PeriodicalIF":6.5,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535016","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 support design on fabrication accuracy of 316L stainless steel components by extruding composite filaments with metal-filled powders","authors":"Qingqing Pan ,&nbsp;Chenyu Wang ,&nbsp;Wei Mai ,&nbsp;Bingchen He ,&nbsp;Chen Ou ,&nbsp;Ziyang Zhang ,&nbsp;Shuangfei Yan ,&nbsp;Jingguang Peng","doi":"10.1016/j.coco.2025.102316","DOIUrl":"10.1016/j.coco.2025.102316","url":null,"abstract":"","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"55 ","pages":"Article 102316"},"PeriodicalIF":6.5,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550795","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":"Conjugated coordination polymer composite electrodes for efficient nitrogen reduction electrocatalysis","authors":"Yuanhao Song ,&nbsp;Shouhan Zhang ,&nbsp;Yunxia Liu ,&nbsp;Yidan Ding ,&nbsp;Ziwei Ma ,&nbsp;Yan Liu ,&nbsp;Wei Fan ,&nbsp;Longsheng Zhang","doi":"10.1016/j.coco.2025.102326","DOIUrl":"10.1016/j.coco.2025.102326","url":null,"abstract":"<div><div>Electrocatalytic nitrogen reduction reaction (NRR) in alkaline electrolyte presents a sustainable pathway for energy storage and green ammonia (NH₃) synthesis under ambient conditions. Recent studies have shown that adjust <em>d</em> band center of metal active sites can modulate the adsorption/activation energies of reactant and further affect their electrocatalytic performances. Among other NRR catalysts, single-atom catalysts have recently recognized as a promising candidate owning to its maximum metal-utilization efficiency and well-defined active sites, thus can adjust the <em>d</em> band center of metal active sites in the single-atom catalysts. Herein, the catalytic activities of conjugated coordination polymer composite electrodes toward NRR catalysis with respect to the <em>d</em> band center are explored, where four composite electrodes with different metal active sites (including Fe, Co, Ni and Cu) are investigated. Through X-ray photoelectron spectroscopy, valence band spectra analysis and electrochemical measurements, it is found that the <em>d</em> band center in these composite electrodes surprisingly exhibit a same trend in their activities toward NRR catalysis. A higher <em>d</em> band center can appreciably promote the absorption/activation of N₂, leading to its improved NRR performance.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"55 ","pages":"Article 102326"},"PeriodicalIF":6.5,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143561932","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}