Composites Communications最新文献

{"title":"Agglomerative suppression and synergistic reinforcement of hybrid GO-hBN/polymer nanocomposites with high filler contents","authors":"Qiang Jing,&nbsp;Zixi Zhang,&nbsp;Tianqi Liang,&nbsp;Shukun Yu,&nbsp;Shiwei Liu,&nbsp;Hang Zhao,&nbsp;Zheling Li,&nbsp;Pei Huang,&nbsp;Yuan-Qing Li,&nbsp;Shao-Yun Fu","doi":"10.1016/j.coco.2025.102389","DOIUrl":"10.1016/j.coco.2025.102389","url":null,"abstract":"<div><div>Mimicking the structure of nacres with high filler contents and layered structures has been demonstrated to be a promising strategy to improve the mechanical properties of nanocomposites. However, in the fabrication of such nanocomposites, the incorporation of fillers at high contents often suffers from their agglomeration that remarkably limits their mechanical performances, which is difficult to avoid and evaluate. In this work, nanocomposites, mimicking the structure of nacres, have been prepared using high content graphene oxide (GO) and hexagonal boron nitride (hBN) hybrid fillers, where the incorporation of hBN suppresses the agglomeration of GO. This leads to superior mechanical properties of the hybrid nanocomposites than those reinforced with a single type of fillers, especially at high filler contents. Based on the three-phase rule of mixtures, a concept of ‘dispersion factor’ is proposed. A higher dispersion factor of GO is found in the hybrid nanocomposites than in the nanocomposites reinforced with just GO, demonstrating a higher level of GO dispersion and the suppression of GO agglomeration by adding hBN. Such a hybrid strategy in nanocomposites shows paramount values in the suppression of nanofiller agglomeration for preparing nanocomposites.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102389"},"PeriodicalIF":6.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817497","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":"Enhancing electrical insulation of epoxy composites by suppressing charge injection and subsequently electric field distortion","authors":"Xianhua Huan ,&nbsp;Bingbing Hu ,&nbsp;Zhiwen Ji ,&nbsp;Chao Gao ,&nbsp;Fusheng Zhou ,&nbsp;Jiahe Yu ,&nbsp;Bin Du ,&nbsp;Yushun Zhao","doi":"10.1016/j.coco.2025.102391","DOIUrl":"10.1016/j.coco.2025.102391","url":null,"abstract":"<div><div>Epoxy composites with flame-retardant fillers are key electrical insulation materials for dry-type high-voltage (HV) transformers, but the ionic structure nature of the flame-retardant fillers can lead to the deterioration of the insulation performance, limiting the reliability of HV power systems. This study systematically examines how flame-retardant filler introduction and interface structure evolution impact charge transport within composites, aiming to refine the design principles of flame-retardant electrical insulation materials. Composites with uniformly dispersed fillers and ideal interfacial bonding with the matrix exhibit improved resistivity (1.41 × 10¹⁶ Ω cm), attributed to the dense cross-linked network that limits impurity ion movement. More importantly, the behavior of space charge accumulation and dissipation within the composites indicates that the interfacial structure affects the internal energy level distribution, thereby influencing charge carrier transport characteristics. By optimizing the interfacial structure, the suppression of electrode charge injection and reduction of electric field distortion (from 15.1 % to 8.5 %) enhance the electrical insulation reliability of epoxy composites. These findings deepen the understanding of structure-property relationships in epoxy composites, offering critical insights for designing advanced flame-retardant HV electrical insulation materials.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102391"},"PeriodicalIF":6.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807370","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":"Synergistic polarization effect of selenium-deficient quantum dots integrated carbon nanotubes for superior electromagnetic wave absorption","authors":"Xuexia Liu ,&nbsp;Jintao Chen ,&nbsp;Di Lan ,&nbsp;Junhao Hu ,&nbsp;Siyuan Zhang ,&nbsp;Quanyong Lv ,&nbsp;Lihua Xiu ,&nbsp;Wenzhu Yu ,&nbsp;Dong Liu ,&nbsp;Guanglei Wu","doi":"10.1016/j.coco.2025.102390","DOIUrl":"10.1016/j.coco.2025.102390","url":null,"abstract":"<div><div>Vacancy engineering stands as a crucial strategy for modulating the electrical properties and crystal structures, presenting a promising avenue for advancing electromagnetic (EM) absorption materials. However, designing high-efficiency absorbers with a high density of vacancies remains a significant challenge, with the vacancy-induced loss mechanisms still not fully elucidated. Herein, the vacancy-induced loss mechanism in virtue of carbon nanotubes threaded through quantum dots, which are embedded in carbon nanospheres and feature selenium-rich vacancies (V-C/NiCoSe), is meticulously designed using the MOF template method. Temperature-regulated defect analysis in V-C/NiCoSe composites unveils the existence of selenium vacancies, with experimental results indicating that their concentration increases with rising annealing temperature. By strategically engineering selenium vacancies, we achieve optimal dielectric loss, resulting in an effective bandwidth of 3.46 GHz and a minimal reflection loss (<em>RL</em>_min) of −46.8 dB at a thickness of 2.0 mm. This research provides a simple yet highly effective approach for enhancing EM absorption performance and corrosion resistance in harsh environments, utilizing a template-based method to introduce abundant vacancies.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102390"},"PeriodicalIF":6.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790895","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":"Sustainable spent coffee ground carbon dots/polylactic acid fiber green composites with superior damp heat resistance","authors":"Zhaoxuan Liu ,&nbsp;Xiao Liu ,&nbsp;Leyu Dai ,&nbsp;Jun Sun ,&nbsp;Jian-jun Wang ,&nbsp;Chuanxiang Qin ,&nbsp;Lixing Dai ,&nbsp;Guoqiang Chen","doi":"10.1016/j.coco.2025.102388","DOIUrl":"10.1016/j.coco.2025.102388","url":null,"abstract":"","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102388"},"PeriodicalIF":6.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785704","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":"Photothermal dual-cure 3D printing of mechanically robust microphase-separated hydrophobic ionic conductive elastomers","authors":"Shuqiang Peng ,&nbsp;Yifan Xu ,&nbsp;Yuheng Wang ,&nbsp;Laiwen Cai ,&nbsp;Zesheng Guo ,&nbsp;Xianmei Huang ,&nbsp;Weiqiang Chen ,&nbsp;Longhui Zheng ,&nbsp;Xiangfang Peng ,&nbsp;Lixin Wu","doi":"10.1016/j.coco.2025.102387","DOIUrl":"10.1016/j.coco.2025.102387","url":null,"abstract":"<div><div>Vat photopolymerization (VPP) 3D printing has emerged as a transformative method for fabricating structurally tailored stretchable ionic conductors. However, developing hydrophobic ionic conductive elastomers (ICEs) that simultaneously achieve high electrical performance, mechanical robustness, and environmental stability remains challenging. Herein, we present a photothermal dual-curing strategy to overcome this limitation by integrating a dynamic hindered urea bond-functionalized blocked polyurethane acrylate with a hydrophobic ionic liquid. The photocuring process induces microphase separation, forming continuous ion-conductive pathways that achieve high ionic conductivity (5.30 mS m⁻¹) at a low ionic liquid loading of 30 wt%. Subsequent thermal annealing drives the formation of high-molecular-weight polyurethane/polyurea chains, creating a dynamic crosslinking-interpenetrating network that synergistically enhances tensile properties and resilience (tensile strength of 3.0 MPa, elongation of 1036 %, and 0.5 % residual strain at 50 % deformation). The resulting ICEs exhibit outstanding hydrophobicity (water contact angle: 112.3°) and anti-swelling stability. Using VPP 3D printing, we fabricate high-resolution architectured ICEs as sensors for real-time monitoring of finger movements and as soft actuators for underwater applications. Additionally, ICEs-based triboelectric nanogenerators with microstructured surfaces demonstrate stable and enhanced voltage output. This work establishes a universal paradigm for designing high-performance ICEs via additive manufacturing, advancing their applications in aquatic sensors and self-powered systems.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102387"},"PeriodicalIF":6.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777267","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 performance of bio-based epoxidized natural rubber nanocomposites in high-performance green tires via interface modification","authors":"Yanguo Li ,&nbsp;Zixuan Wang ,&nbsp;Han Song ,&nbsp;Ruoyu Wang ,&nbsp;Xi Zhang ,&nbsp;Qipeng Yuan ,&nbsp;Weixiao Song ,&nbsp;Xiaohui Wu ,&nbsp;Guo-hua Hu ,&nbsp;Liqun Zhang","doi":"10.1016/j.coco.2025.102356","DOIUrl":"10.1016/j.coco.2025.102356","url":null,"abstract":"<div><div>Epoxidized natural rubber (ENR) is a high-performance, bio-based material derived from the epoxidation of natural rubber (NR). In the tire industry, using ENR and NR as matrix materials is an important method to fabricate high-performance bio-based tires. However, due to the significant polarity difference between ENR and NR, the dispersion of silica within the rubber matrix leads to a distinct phase separation structure. In this study, the interface pre-modification method by silane coupling agents Bis[3-(triethoxysilyl)propyl] disulfide (TESPD) and 3-(Methacryloyloxy)propyltrimethoxy-silane (KH580) has successfully solved this problem. The results showed that TESPD and KH580 successfully grafted onto the surface of silica through chemical bonding, significantly reducing the specific surface area and silanol group content of the silica. Subsequently, a series of ENR/NR/silica and solution polymerized styrene-butadiene rubber (SSBR)/NR/silica nanocomposites were synthesized. Compared to petroleum-based SSBR, the ENR/NR/silica nanocomposites exhibited superior filler dispersion and dynamic and static mechanical properties due to the chemical bonding between the epoxy groups and silanol groups. Owing to the enhanced modification effect of the pre-modification process on the silica, the ENR/NR/KH580-modified-silica nanocomposites exhibit superior overall performance, showing an increase of 29.3 % and 53.2 % in tensile strength and anti-wet performance, respectively, compared to SSBR/NR nanocomposites. In addition, the dispersion mechanism of silica with different modification method in the ENR and NR phases was elucidated through the innovative use of AFM-nano-IR. Compared to TESPD-modified-silica, KH580-modified-silica can form a coupling bridge structure between the ENR and NR phases through the thiol groups, epoxy groups and silanol groups, which significantly modified the phase separation structure and consequently endowed the material with the best comprehensive performance.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102356"},"PeriodicalIF":6.5,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783057","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":"Polyphenol-regulated Cu-based broad-spectrum anti-oxidants to overcome oxidative stress","authors":"Ke Zhang,&nbsp;Minghui Ou,&nbsp;Yujie Xiao,&nbsp;Zhiwei Wei,&nbsp;Li Yang,&nbsp;Yi Xie,&nbsp;Changsheng Zhao","doi":"10.1016/j.coco.2025.102385","DOIUrl":"10.1016/j.coco.2025.102385","url":null,"abstract":"<div><div>Copper-based nanozymes have emerged as promising therapeutic agents for oxidative stress-related diseases due to their enzyme-mimicking properties. However, their development is still limited by poor biocompatibility, insufficient broad-spectrum free radical scavenging ability, and potential toxicity from Cu²⁺ leakage. To address these challenges, we developed Cu@EA-BTC, a broad-spectrum antioxidant material, by integrating ellagic acid (EA) into copper-based metal-organic frameworks (Cu@BTC). The Cu@BTC serves as a stable copper source, while the EA endows the Cu@EA-BTC with broad-spectrum ROS scavenging and enhanced catalase (CAT)-like activity via facilitating the reduction of Cu²⁺ to Cu⁺. As a result, the Cu@EA-BTC exhibits superior antioxidant properties and excellent biocompatibility, including both cellular and blood compatibility. Meanwhile, the Cu@EA-BTC effectively protects immune cells from oxidative damage, which indicates its potential for oxidative stress-related therapies. This study provides a promising strategy for developing safe and efficient nanozyme-based antioxidant materials for biomedical applications.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102385"},"PeriodicalIF":6.5,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737763","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":"Liquid metal/elastomer composites with strain invariant electromagnetic shielding","authors":"Zhouping Sun ,&nbsp;Yong Dong ,&nbsp;Wei Zhang ,&nbsp;Yanyan Liu ,&nbsp;Xingyou Tian ,&nbsp;Hua Wang","doi":"10.1016/j.coco.2025.102364","DOIUrl":"10.1016/j.coco.2025.102364","url":null,"abstract":"<div><div>While the fabrication of stretchable electromagnetic interference (EMI) shielding materials through liquid metal (LM) incorporation has been extensively studied, the development of high-performance elastomers as flexible EMI shields via a simple yet efficient methodology remains a critical challenge. This study presents a fabrication strategy integrating solution dip-coating with mechanical sintering to develop high-efficiency EMI shields with strain-invariant performance. The stepwise process involves: (1) dopamine self-polymerization forming conformal polydopamine (PDA) layers on silicone rubber (SR) substrates and LM particles, (2) LM deposition via dip-coating, and (3) pressure-assisted sintering to construct percolation-stable conductive networks. The resulting films exhibited stable shielding effectiveness (SE) after stretching and multiple bending cycles. With only ∼3.5 vol% LM and a thickness of ∼100 μm, the films demonstrated a specific SE (SSE) of ∼551 dB/mm (SSE = SE/thickness). This methodology establishes a general paradigm for designing mechanically durable EMI shielding materials through interfacial engineering.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102364"},"PeriodicalIF":6.5,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800052","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":"Lithium-zinc ferrite-based chitosan/graphene oxide nanocomposite: An efficient microwave absorbing material for C and X bands","authors":"Vijay Singh ,&nbsp;Rohit ,&nbsp;Deepika ,&nbsp;Khalid M. Batoo ,&nbsp;Mahavir Singh","doi":"10.1016/j.coco.2025.102383","DOIUrl":"10.1016/j.coco.2025.102383","url":null,"abstract":"<div><div>Nanomaterials and nanocomposites are transforming microwave absorbers despite environmental and cost challenges. Porous lithium zinc ferrite (LZFO) nanoparticles were synthesized via sol-gel autocombustion (calcined at 500 °C), coated with chitosan (CH), and dispersed into graphene oxide (GO) through ultrasonication, forming the CHLZFO-GO nanocomposite. Structural analysis showed increased X-ray density, microstrain, and dislocation density, with decreased average crystallite size and lattice constant. Morphological studies revealed a porous structure with nanoparticles homogeneously distributed within the GO matrix. LZFO exhibited 71 emu/g saturation magnetization and 90.49 Oe coercivity, which decreased when combined with the non-magnetic CH-GO matrix. In the 1–13.5 GHz (GHz) range, CHLZFO-GO showed increased real permeability and complex permittivity while imaginary permeability decreased. Both materials demonstrated predominant dielectric and magnetic losses. CHLZFO-GO exhibited minimal reflection loss (=−71.45 dB (dB)) at 6.78 GHz, while LZFO reached −61.61 dB at 8.21 GHz, highlighting their potential for modern electromagnetic applications.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102383"},"PeriodicalIF":6.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777266","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":"Boosting the electromagnetic wave absorption performance of glass fiber by in-situ modification with carbon nanotubes using a coordination solution method","authors":"Zongyuan Wu,&nbsp;Lingyu li,&nbsp;Rui Zhu,&nbsp;Fei Jia,&nbsp;Ming Xu","doi":"10.1016/j.coco.2025.102365","DOIUrl":"10.1016/j.coco.2025.102365","url":null,"abstract":"<div><div>Currently, flexible electromagnetic wave-absorbing materials are a highly regarded direction in the field of electromagnetic wave absorption. Growing CNTs on fiber surfaces is an effective strategy for preparing these flexible wave-absorbing materials. However, the CNTs grown on fibers through chemical vapor deposition remain challenges in achieving uniform morphology, high loading capacity, and complete coverage of the fibers due to uneven catalyst size and distribution caused by agglomeration., which can lead to a loss of wave-absorbing performance. This paper reports a method for loading catalysts on the surface of glass fiber using a coordination solution, successfully creating a uniform layer of CNTs on the fiberglass surface. The results show that employing a coordination solution to create a catalytic environment for CNTs leads to CNTs with higher growth density, more uniform morphology, and higher conductivity, which benefit to the electromagnetic wave absorption capability of the CNTs/GF material. At a frequency of 7.25 GHz and a thickness of 5.34 mm, the material's minimum reflection loss reaches −69.6 dB. Meanwhile, at a thickness of 2.64 mm, its effective frequency bandwidth reaches 5.12 GHz. The improved wave-absorbing efficiency and effective frequency bandwidth of the CNTs/GF material arise not only from the conductive network of CNTs on the fiber surface but also from the high retention of nickel-based catalyst, which balances the electrical and magnetic properties of the material and enhances its impedance matching. This method provides a new pathway for the development of novel structural-functional integrated electromagnetic wave absorption materials.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102365"},"PeriodicalIF":6.5,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734966","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}