Composites Part B: Engineering最新文献

英文中文

Near-infrared induced photo-thermal synergistic curing: Enhancing the construction efficiency and curing uniformity of glass fiber reinforced composites

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-19 DOI: 10.1016/j.compositesb.2025.112320

Junyi Pi , Zilong Zhu , Xinxin Sang , Hongchen Ji , Ren Liu

The efficient, mild, and convenient photopolymerization technology offers a promising green fabrication method for composites and has already been successfully applied in structural repair and outdoor manufacture. In previous studies, a method was developed for producing thick glass fiber-reinforced composites (GFRPC) of up to 20 mm based on upconversion assisted near-infrared photopolymerization (UCAP). Photo-thermal dual curing can further improve both curing uniformity and efficiency. The present work fully utilized the synergistic photothermal effects of UCAP. Near-infrared induced the cleavage of Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (BAPO) to generate benzoyl radicals, while benzopinacol (BPNC) thermally decomposed into benzophenone radicals, jointly promoting acrylate matrix crosslinking. When the thickness of GFRPC reached 15 mm, the curing time was reduced to 60 s, achieving double bond conversion of 81 % and 71 % on the top and bottom surfaces, respectively. Compared to the BAPO/UCAP photoinitiated system, the BPNC/BAPO/UCAP photo-thermal synergistic system significantly enhanced both the curing efficiency and uniformity of GFRPC. The resulting GFRPC exhibited an interfacial shear strength (IFSS) of 37.15 MPa, a flexural strength of 506.85 MPa, and an increased impact toughness of 242.70 kJ/m². The photo-thermal synergistic curing method effectively facilitated the construction of reliable GFRPC with enhanced properties, thereby bolstering the potential for rapid manufacturing of high-performance GFRPC in outdoor applications using photopolymerization techniques.

{"title":"Near-infrared induced photo-thermal synergistic curing: Enhancing the construction efficiency and curing uniformity of glass fiber reinforced composites","authors":"Junyi Pi , Zilong Zhu , Xinxin Sang , Hongchen Ji , Ren Liu","doi":"10.1016/j.compositesb.2025.112320","DOIUrl":"10.1016/j.compositesb.2025.112320","url":null,"abstract":"<div><div>The efficient, mild, and convenient photopolymerization technology offers a promising green fabrication method for composites and has already been successfully applied in structural repair and outdoor manufacture. In previous studies, a method was developed for producing thick glass fiber-reinforced composites (GFRPC) of up to 20 mm based on upconversion assisted near-infrared photopolymerization (UCAP). Photo-thermal dual curing can further improve both curing uniformity and efficiency. The present work fully utilized the synergistic photothermal effects of UCAP. Near-infrared induced the cleavage of Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (BAPO) to generate benzoyl radicals, while benzopinacol (BPNC) thermally decomposed into benzophenone radicals, jointly promoting acrylate matrix crosslinking. When the thickness of GFRPC reached 15 mm, the curing time was reduced to 60 s, achieving double bond conversion of 81 % and 71 % on the top and bottom surfaces, respectively. Compared to the BAPO/UCAP photoinitiated system, the BPNC/BAPO/UCAP photo-thermal synergistic system significantly enhanced both the curing efficiency and uniformity of GFRPC. The resulting GFRPC exhibited an interfacial shear strength (IFSS) of 37.15 MPa, a flexural strength of 506.85 MPa, and an increased impact toughness of 242.70 kJ/m<sup>2</sup>. The photo-thermal synergistic curing method effectively facilitated the construction of reliable GFRPC with enhanced properties, thereby bolstering the potential for rapid manufacturing of high-performance GFRPC in outdoor applications using photopolymerization techniques.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112320"},"PeriodicalIF":12.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471729","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}

引用次数: 0

INPR-Connector: Interlocking negative Poisson’s ratio connectors design for deployable energy absorption structures

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-19 DOI: 10.1016/j.compositesb.2025.112243

Wenpeng Xu , Mengyu Zhang , Hao Xu , Menglin Yu , Liuchao Jin , Xiaoya Zhai , Jingchao Jiang

Deployable energy absorption structures are widely utilized in aircraft landing gear, seismic support systems, and transport vessels due to their unique designs that significantly improve energy absorption capacity. However, current studies encounter challenges related to insufficient connection strength and suboptimal energy absorption performance. To address these issues, this paper proposed an interlocking negative Poisson’s ratio connector (INPR-Connector) with expansion capabilities and geometric interlocking functions, aimed at enhancing both connectivity and energy absorption. We developed two types of structures: complete structure filling (CSF) and intermediate part filling (IPF), and experimentally validated the superior connection performance and energy absorption capabilities of unit cell-generated structures under various geometric configurations. Moreover, the proposed connection structure was integrated with a rigid plate to create an expandable, bistable origami structure embedded INPR-Connector. When the load is applied, the hinge can store energy through deformation, converting the applied load into tensile forces within the horizontal flexible hinges. This structure can also recover its original shape after multiple cycles of compression, demonstrating excellent load-bearing capacity. Both numerical simulations and physical experiments confirm the effectiveness and feasibility of the designed connection structure within expandable configurations. The results indicate that this structure not only possesses adjustable energy absorption capabilities but also significantly enhances impact resistance.

{"title":"INPR-Connector: Interlocking negative Poisson’s ratio connectors design for deployable energy absorption structures","authors":"Wenpeng Xu , Mengyu Zhang , Hao Xu , Menglin Yu , Liuchao Jin , Xiaoya Zhai , Jingchao Jiang","doi":"10.1016/j.compositesb.2025.112243","DOIUrl":"10.1016/j.compositesb.2025.112243","url":null,"abstract":"<div><div>Deployable energy absorption structures are widely utilized in aircraft landing gear, seismic support systems, and transport vessels due to their unique designs that significantly improve energy absorption capacity. However, current studies encounter challenges related to insufficient connection strength and suboptimal energy absorption performance. To address these issues, this paper proposed an interlocking negative Poisson’s ratio connector (INPR-Connector) with expansion capabilities and geometric interlocking functions, aimed at enhancing both connectivity and energy absorption. We developed two types of structures: complete structure filling (CSF) and intermediate part filling (IPF), and experimentally validated the superior connection performance and energy absorption capabilities of unit cell-generated structures under various geometric configurations. Moreover, the proposed connection structure was integrated with a rigid plate to create an expandable, bistable origami structure embedded INPR-Connector. When the load is applied, the hinge can store energy through deformation, converting the applied load into tensile forces within the horizontal flexible hinges. This structure can also recover its original shape after multiple cycles of compression, demonstrating excellent load-bearing capacity. Both numerical simulations and physical experiments confirm the effectiveness and feasibility of the designed connection structure within expandable configurations. The results indicate that this structure not only possesses adjustable energy absorption capabilities but also significantly enhances impact resistance.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112243"},"PeriodicalIF":12.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ablation-resistant (Hf,Zr)B2–SiC composite coating with alternating lamellar architecture by one-step atmospheric plasma spraying

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-19 DOI: 10.1016/j.compositesb.2025.112302

Junshuai Lv , Wei Li , Zhenglong Li , Yanqin Fu , Yawen Ma , Lingxiang Guo , Jiachen Li , Tao Li , Yulei Zhang

Inspired by the brick-and-mortar arrangement of mollusk shells, constructing an alternating lamellar architecture is an effective strategy to overcome the catastrophic damage of ablation-resistant coatings and their oxide scales in extreme environments. Here, we developed a coating dominantly composed of alternating layers of (Hf,Zr)B₂ and SiC by one-step supersonic atmosphere plasma spraying for C/C composites, which improves fabrication efficiency. The coating shows “zero” ablation and cycling reliability at 2200 °C. The resulting oxide scale based on a multilayered (Hf,Zr)O₂ skeleton with embedded glassy SiO₂ layers is responsible for the superior ablation resistance. The refractory skeleton ensures thermal stability and the SiO₂ layers inhibit the oxygen inward diffusion. Two energy dissipation mechanisms, including crack deflection and multilayered delamination, contribute to the structural integrity of the oxide scale due to numerous interfaces in the lamellar architecture. The alternating lamellar coatings enable simultaneously superior oxidation resistance and damage tolerance and have great application potential for reusable aerospace components requiring thermal protection.

{"title":"Ablation-resistant (Hf,Zr)B2–SiC composite coating with alternating lamellar architecture by one-step atmospheric plasma spraying","authors":"Junshuai Lv , Wei Li , Zhenglong Li , Yanqin Fu , Yawen Ma , Lingxiang Guo , Jiachen Li , Tao Li , Yulei Zhang","doi":"10.1016/j.compositesb.2025.112302","DOIUrl":"10.1016/j.compositesb.2025.112302","url":null,"abstract":"<div><div>Inspired by the brick-and-mortar arrangement of mollusk shells, constructing an alternating lamellar architecture is an effective strategy to overcome the catastrophic damage of ablation-resistant coatings and their oxide scales in extreme environments. Here, we developed a coating dominantly composed of alternating layers of (Hf,Zr)B<sub>2</sub> and SiC by one-step supersonic atmosphere plasma spraying for C/C composites, which improves fabrication efficiency. The coating shows “zero” ablation and cycling reliability at 2200 °C. The resulting oxide scale based on a multilayered (Hf,Zr)O<sub>2</sub> skeleton with embedded glassy SiO<sub>2</sub> layers is responsible for the superior ablation resistance. The refractory skeleton ensures thermal stability and the SiO<sub>2</sub> layers inhibit the oxygen inward diffusion. Two energy dissipation mechanisms, including crack deflection and multilayered delamination, contribute to the structural integrity of the oxide scale due to numerous interfaces in the lamellar architecture. The alternating lamellar coatings enable simultaneously superior oxidation resistance and damage tolerance and have great application potential for reusable aerospace components requiring thermal protection.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112302"},"PeriodicalIF":12.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143473961","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}

引用次数: 0

W-shaped broadband attenuation of longitudinal waves through composite elastic metamaterial

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-18 DOI: 10.1016/j.compositesb.2025.112250

Brahim Lemkalli , Krzysztof K. Dudek , Muamer Kadic , Qingxiang Ji , Sébastien Guenneau , Abdellah Mir , Younes Achaoui

We investigate a composite elastic meta-slab with exceptional transmission properties, particularly the presence of a W-shaped bandgap. A comprehensive study, utilizing experimental measurements, the finite element method, and an analytical approach, identifies this specific bandgap. The meta-slab design involves cutting an array of composite materials arranged in parallel with strategically placed incisions. This configuration ensures that the materials between the slits act as plate-like waveguides within the surrounding medium. The incorporation of steel into ABS-based Fabry–Perot cavities induces a notable coupling effect between longitudinal waves and localized modes traversing the structure, leading to the formation of two distinct Fabry–Perot resonators. These coupling effects generate a series of resonances and antiresonances, ultimately producing the W-band gap through the interaction of two symmetric Fano resonances.

引用次数: 0

Enhancing bone healing through immunological microenvironment modulation via a smart-responsive multifunctional therapeutic system

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-18 DOI: 10.1016/j.compositesb.2025.112252

Yu Wang , Huaiyuan Zhang , Tinglin Zhang , Kuo Xia , Wenyu Qiao , Longhai Du , Xueneng Hu , Xuan Zhou , Huifen Qiang , Meigui Li , Jun Meng , Feiyan Chen , Jie Gao , Zuochong Yu

The clinical repair of bone defects is still a significant challenge because of unfavorable immunological microenvironments, limited blood supply, and weak osteogenic differentiation potential. Therefore, a hydroxyapatite-based (HAp) nanocomposite (HPDD), consisting of polydopamine (PDA)-adhered deferoxamine (DFO), was designed and incorporated into an F127DA hydrogel. The HPDD nanocomposite acted as a photosensitizer, endowing the F127DA/HPDD hydrogel with the ability to spatiotemporally and intelligently release DFO and Ca²⁺ in response to near-infrared (NIR)/pH stimulation. This mild photothermal therapy induced by NIR irradiation achieves the clearance of reactive oxygen species (ROS), the polarization of M1 macrophages toward the M2 phenotype, and the promotion of angiogenesis and bone repair. Furthermore, by fostering an anti-inflammatory immunological microenvironment, the F127DA/HPDD hydrogel sustained release system promoted the secretion of functional factors, which are beneficial for angiogenesis and bone repair. Transcriptomic analysis was employed to investigate how M2 macrophage polarization enhances angiogenesis and osteogenic differentiation. In vivo experiments further confirmed that the F127DA/HPDD hydrogel system, under NIR/pH stimulation, promoted angiogenesis and osteogenic differentiation by inhibiting inflammation. In summary, this intelligent responsive hydrogel system provides a novel approach for reshaping an anti-inflammatory immunological microenvironment to accelerate bone repair.

{"title":"Enhancing bone healing through immunological microenvironment modulation via a smart-responsive multifunctional therapeutic system","authors":"Yu Wang , Huaiyuan Zhang , Tinglin Zhang , Kuo Xia , Wenyu Qiao , Longhai Du , Xueneng Hu , Xuan Zhou , Huifen Qiang , Meigui Li , Jun Meng , Feiyan Chen , Jie Gao , Zuochong Yu","doi":"10.1016/j.compositesb.2025.112252","DOIUrl":"10.1016/j.compositesb.2025.112252","url":null,"abstract":"<div><div>The clinical repair of bone defects is still a significant challenge because of unfavorable immunological microenvironments, limited blood supply, and weak osteogenic differentiation potential. Therefore, a hydroxyapatite-based (HAp) nanocomposite (HPDD), consisting of polydopamine (PDA)-adhered deferoxamine (DFO), was designed and incorporated into an F127DA hydrogel. The HPDD nanocomposite acted as a photosensitizer, endowing the F127DA/HPDD hydrogel with the ability to spatiotemporally and intelligently release DFO and Ca<sup>2+</sup> in response to near-infrared (NIR)/pH stimulation. This mild photothermal therapy induced by NIR irradiation achieves the clearance of reactive oxygen species (ROS), the polarization of M1 macrophages toward the M2 phenotype, and the promotion of angiogenesis and bone repair. Furthermore, by fostering an anti-inflammatory immunological microenvironment, the F127DA/HPDD hydrogel sustained release system promoted the secretion of functional factors, which are beneficial for angiogenesis and bone repair. Transcriptomic analysis was employed to investigate how M2 macrophage polarization enhances angiogenesis and osteogenic differentiation. In vivo experiments further confirmed that the F127DA/HPDD hydrogel system, under NIR/pH stimulation, promoted angiogenesis and osteogenic differentiation by inhibiting inflammation. In summary, this intelligent responsive hydrogel system provides a novel approach for reshaping an anti-inflammatory immunological microenvironment to accelerate bone repair.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112252"},"PeriodicalIF":12.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revitalizing osteoporotic bone repair via multilevel ROS scavenging and osteoimmune regulating hydrogel

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-18 DOI: 10.1016/j.compositesb.2025.112305

Yiran Zhang , Qingcheng Song , Shuai Yang , Jiheng Xiao , Fengkun Wang , Chunxu Fu , Xin Xing , Jianhua Wu , Shuo Zhang , Yanbin Zhu , Yingze Zhang

Osteoporotic bone defects (OBDs) pose significant clinical challenges due to impaired tissue regeneration and osteogenic differentiation. Conventional combination therapies using systemic anti-osteoporosis drugs and graft fillings have yielded unsatisfactory results. Excessive reactive oxygen species (ROS) are a hallmark of OBDs, leading to abnormal inflammatory responses and a hostile osteoimmune microenvironment that impedes repair. In this study, we developed a multifunctional injectable hydrogel, termed PTSr@CP, composed of a strontium (Sr) and tannic acid (TA)-based metal–phenolic network core coated with polydopamine (PDA), integrated into a matrix of carboxymethyl chitosan and poly (γ-glutamic acid). The PTSr@CP hydrogel can be easily injected into bone defect sites, where it undergoes rapid in situ crosslinking and exhibits exceptional ROS-scavenging capabilities. Additionally, the hydrogel mediates mild photothermal therapy (MPTT), promoting local tissue repair. Both in vitro and in vivo studies demonstrated its excellent biosafety and confirmed synergistic bone regeneration through enhanced osteogenesis, angiogenesis, and osteoimmunomodulation. This work offers a compelling strategy for OBD treatment by combining mild hyperthermia-enhanced in situ bone repair with sustained delivery of bioactive agents to improve the osteoimmune microenvironment.

{"title":"Revitalizing osteoporotic bone repair via multilevel ROS scavenging and osteoimmune regulating hydrogel","authors":"Yiran Zhang , Qingcheng Song , Shuai Yang , Jiheng Xiao , Fengkun Wang , Chunxu Fu , Xin Xing , Jianhua Wu , Shuo Zhang , Yanbin Zhu , Yingze Zhang","doi":"10.1016/j.compositesb.2025.112305","DOIUrl":"10.1016/j.compositesb.2025.112305","url":null,"abstract":"<div><div>Osteoporotic bone defects (OBDs) pose significant clinical challenges due to impaired tissue regeneration and osteogenic differentiation. Conventional combination therapies using systemic anti-osteoporosis drugs and graft fillings have yielded unsatisfactory results. Excessive reactive oxygen species (ROS) are a hallmark of OBDs, leading to abnormal inflammatory responses and a hostile osteoimmune microenvironment that impedes repair. In this study, we developed a multifunctional injectable hydrogel, termed PTSr@CP, composed of a strontium (Sr) and tannic acid (TA)-based metal–phenolic network core coated with polydopamine (PDA), integrated into a matrix of carboxymethyl chitosan and poly (γ-glutamic acid). The PTSr@CP hydrogel can be easily injected into bone defect sites, where it undergoes rapid in situ crosslinking and exhibits exceptional ROS-scavenging capabilities. Additionally, the hydrogel mediates mild photothermal therapy (MPTT), promoting local tissue repair. Both in vitro and in vivo studies demonstrated its excellent biosafety and confirmed synergistic bone regeneration through enhanced osteogenesis, angiogenesis, and osteoimmunomodulation. This work offers a compelling strategy for OBD treatment by combining mild hyperthermia-enhanced in situ bone repair with sustained delivery of bioactive agents to improve the osteoimmune microenvironment.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112305"},"PeriodicalIF":12.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464906","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}

引用次数: 0

A novel hierarchical structure of in-situ copper matrix composites reinforced with micro-clusters of TiB2 particles and nano-precipitates of B24Cu particles

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-18 DOI: 10.1016/j.compositesb.2025.112311

Hao Shi , Yihui Jiang , Pengtao Li , Jie Cui , Fei Cao , Yanfang Wang , Shuhua Liang

Copper-based materials strengthened by a second phase are widely used in electrical industrial devices due to their high strength and high electrical conductivity. However, traditional uniformly dispersed materials have inherent limitations, which restrict their overall performance. Here, we develop a new hierarchical structure strategy to overcome this issue in copper-based materials by combining in-situ synthesized copper matrix composite powders with routine powder metallurgy processes. Based on the rapidly solidified microstructure of the composite powder, the submicron TiB₂ particles with a high volume fraction formed by a liquid state in-situ reaction distribute as micro-clusters, while the nano-precipitates of B₂₄Cu particles with high thermal stability precipitates during the sintering stage and is dispersive and homogeneously distributed. This novel hierarchical structure exhibits extraordinary work hardening capability and forms a network of low electrical resistance regions, thus leading to copper matrix composites with an ultimate tensile strength of 926 MPa and electrical conductivity as high as 79.8 % International Annealed Copper Standard, which is superior to numerous copper-based materials reinforced with ceramic second phases. The results will provide fundamental insights for the structural design of second phase strengthened copper-based materials.

{"title":"A novel hierarchical structure of in-situ copper matrix composites reinforced with micro-clusters of TiB2 particles and nano-precipitates of B24Cu particles","authors":"Hao Shi , Yihui Jiang , Pengtao Li , Jie Cui , Fei Cao , Yanfang Wang , Shuhua Liang","doi":"10.1016/j.compositesb.2025.112311","DOIUrl":"10.1016/j.compositesb.2025.112311","url":null,"abstract":"<div><div>Copper-based materials strengthened by a second phase are widely used in electrical industrial devices due to their high strength and high electrical conductivity. However, traditional uniformly dispersed materials have inherent limitations, which restrict their overall performance. Here, we develop a new hierarchical structure strategy to overcome this issue in copper-based materials by combining in-situ synthesized copper matrix composite powders with routine powder metallurgy processes. Based on the rapidly solidified microstructure of the composite powder, the submicron TiB<sub>2</sub> particles with a high volume fraction formed by a liquid state in-situ reaction distribute as micro-clusters, while the nano-precipitates of B<sub>24</sub>Cu particles with high thermal stability precipitates during the sintering stage and is dispersive and homogeneously distributed. This novel hierarchical structure exhibits extraordinary work hardening capability and forms a network of low electrical resistance regions, thus leading to copper matrix composites with an ultimate tensile strength of 926 MPa and electrical conductivity as high as 79.8 % International Annealed Copper Standard, which is superior to numerous copper-based materials reinforced with ceramic second phases. The results will provide fundamental insights for the structural design of second phase strengthened copper-based materials.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112311"},"PeriodicalIF":12.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453772","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}

引用次数: 0

Improving thermal stability and kinetical properties through polymer brushes towards wide-temperature solid-state lithium metal batteries

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-18 DOI: 10.1016/j.compositesb.2025.112328

Yuxuan Li, Jing Yang, Kangshuai Zhu, Qinmin Pan

The operation of solid-state lithium metal batteries (SSLMBs) under wide temperature ranges have been considered as the final stage of commercialization of SSLMBs. However, hard Li-ion transport at low temperatures and inferior interfacial stability at high temperatures remains challenging issues. Herein, to solve both the aforementioned issues, we introduce copolymer brushes (PASLi-PEG) comprised of poly-(lithium 2-acrylamido-2-methylpropanesulfonic acid) and poly(ethylene glycol) diacrylate onto PE separators into the succinonitrile polymer electrolyte (SNPE). The designed PASLi-PEG brushes facilitate the formation of stable SEI layer, thereby enhancing the high-temperature stability of the resulting batteries. Moreover, the PASLi-PEG brushes offer fast and continuous Li-ion channels to overcome the high Li-ion transfer barrier. As a result, the resulting solid-state Li||LiFePO₄ battery exhibits a long cycling life of 1600 cycles at 60 °C and at 5 C. Notably, the Li||LiFePO₄ battery delivers high capacities of 124.9 mAh g⁻¹ at −15 °C as well as 108.4 mAh g⁻¹ at −20 °C and at the rate of 0.1 C. This strategy effectively enhances thermal stability and Li-ion transport kinetics at wide temperatures, which can be extended to other solid-state batteries under extreme conditions.

{"title":"Improving thermal stability and kinetical properties through polymer brushes towards wide-temperature solid-state lithium metal batteries","authors":"Yuxuan Li, Jing Yang, Kangshuai Zhu, Qinmin Pan","doi":"10.1016/j.compositesb.2025.112328","DOIUrl":"10.1016/j.compositesb.2025.112328","url":null,"abstract":"<div><div>The operation of solid-state lithium metal batteries (SSLMBs) under wide temperature ranges have been considered as the final stage of commercialization of SSLMBs. However, hard Li-ion transport at low temperatures and inferior interfacial stability at high temperatures remains challenging issues. Herein, to solve both the aforementioned issues, we introduce copolymer brushes (PASLi-PEG) comprised of poly-(lithium 2-acrylamido-2-methylpropanesulfonic acid) and poly(ethylene glycol) diacrylate onto PE separators into the succinonitrile polymer electrolyte (SNPE). The designed PASLi-PEG brushes facilitate the formation of stable SEI layer, thereby enhancing the high-temperature stability of the resulting batteries. Moreover, the PASLi-PEG brushes offer fast and continuous Li-ion channels to overcome the high Li-ion transfer barrier. As a result, the resulting solid-state Li||LiFePO<sub>4</sub> battery exhibits a long cycling life of 1600 cycles at 60 °C and at 5 C. Notably, the Li||LiFePO<sub>4</sub> battery delivers high capacities of 124.9 mAh g<sup>−1</sup> at −15 °C as well as 108.4 mAh g<sup>−1</sup> at −20 °C and at the rate of 0.1 C. This strategy effectively enhances thermal stability and Li-ion transport kinetics at wide temperatures, which can be extended to other solid-state batteries under extreme conditions.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112328"},"PeriodicalIF":12.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453777","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}

引用次数: 0

Robust multi-scale bionic ANF/PMSQ aerogel featuring impact protection, thermal insulation and anti-icing functions

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-18 DOI: 10.1016/j.compositesb.2025.112304

Zhihao Hu , Sheng Wang , Jianpeng Wu , Zimu Li , Shuai Liu , Yue Yao , Shilong Duan , Guilin Mei , Xinglong Gong

To address the complex threats in extreme surroundings, it is urgent to develop novel safeguarding devices with multiple defensive properties. Traditional bionic structures typically exhibit only single defense function, making comprehensive protection against diversified threats strenuous. In this study, a novel aerogel material is developed by growing polymethylsesquisiloxane (PMSQ) in situ on the honeycomb skeleton of aramid nanofibers (ANF) to form multi-scale pomelo-peel/honeycomb bionic porous structures. ANF-PMSQ (ANFP) aerogel exhibits superb mechanical strength, which can support 10370 times its own weight. More importantly, ANFP effectively dissipates the impact force from 6.30 kN to 0.19 kN. Besides, mesoporous PMSQ inhibits heat convection within the directional skeleton pores, markedly reducing the thermal conductivity to 64.6 mW/(m·K), and providing outstanding thermal insulation over a wide range from −188 °C to 400 °C. In addition, the rough surface structure and large number of hydrophobic groups endow ANFP with hydrophobic and anti-icing properties. At −10 °C, the freezing time of water droplet on the ANFP surface is extended to an impressive 4547 s, significantly delaying the freezing process. Finally, ANFP provides mechanical-thermal coupling defense and anti-icing properties for outdoor pipelines and batteries in complex conditions. Thus, this work develops a multifunctional protective ANFP material for further engineering applications.

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引用次数: 0

Synthesis of a spherical starch-based superabsorbent polymer and its influence on the microstructure of hardened cement paste

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-02-18 DOI: 10.1016/j.compositesb.2025.112310

Jianjian Zhang , Shuai Bai , Jingjing Lyu , Xinchun Guan

The traditional superabsorbent polymers (SAPs) are usually irregular particles prepared from petroleum derivatives. Additionally, they often encounter issues such as premature water desorption and inadequate water absorption when applied in cement-based materials. This research synthesized a spherical starch-based superabsorbent polymer (SSSP) with stable water absorption using inverse suspension polymerization, analyzed the influencing factors, adsorption-desorption performance and microstructure of SSSP, and investigated its influence on the cement paste. The results indicate that, the factors affecting the sphericity of SSSP are stirring speed, N₂ flow rate, dosage of suspending agent, and the mass ratio of organic phase to aqueous phase in sequence. The water absorption and water storage of starch-based SAP are 2.8 times and 1.4 times higher than those of traditional petroleum-based SAPs. The salt (alkaline) resistance of SSSP is enhanced by grafting stronger hydrophilic –SO₃H and non-ionic –CONH₂ groups, with the former being more readily grafted onto starch. The dried SSSP particles exhibit a smooth surface with a sphericity of 0.98, forming spherical hydrogels upon water absorption. SSSP mitigates 75 % of the autogenous shrinkage of cement paste, with a compressive strength 8.6 % lower than the control group, but still higher than that of other SAP pastes. The voids formed by SSSP desorption are mainly spherical, containing hydration products inside, and the pore distribution in its paste tends towards a smaller scale, with a higher proportion of high-density and ultra-high-density C–S–H.

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