Composites Part A: Applied Science and Manufacturing最新文献

英文中文

Novel two-scale network structured (TiBw + Ti2Cu)/Ti6Al4V composites: Design, microstructure, mechanical properties and fracture behavior

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-17 DOI: 10.1016/j.compositesa.2025.108868

Zhongqiang Zhang , Guopeng Wang , Yang Gao , Zekun Zheng , Xiaoqi Mao , Junjie Xu , Xiang Li , Yongqing Fu , Minghua Chen , Shanna Xu , Longlong Dong

Titanium matrix composites with homogeneous microstructures often exhibit inferior mechanical properties, thus severely restricting their applications for engineering-structural parts. Inspired by nature’s fine microstructures, we have in-situ constructed a novel two-scale structured (TiB_w + Ti₂Cu)/Ti6Al4V composites for significantly improve the mechanical properties of the Ti matrix, i.e., with the first-scale network reinforced by micro-TiB_w and the second-scale network reinforced by nano-Ti₂Cu. Average sizes of α-Ti were significantly refined with adding 2.53 vol% TiB_w, and in-situ formed TiB_w was favorable for formation of equiaxed α-Ti. At 293 K, yield strength and ultimate tensile strength (UTS) of (2.53 vol% TiB_w + 3.02 vol% Ti₂Cu)/Ti6Al4V composites were 1160 MPa and 1272 MPa, respectively, which were 47.2 % and 41.0 % higher than that of Ti6Al4V. Moreover, their maximum strength (514 MPa) is 27.4 % higher than that of Ti6Al4V alloy at 873 K. The remarkable increase in strength for the composites is attributed to fine-grain strengthening and precipitation-strengthening from Ti₂Cu nanoparticles, and high temperature strength is due to the pinning effect of TiB_w in the softened matrix and hinderance of flow in the matrix.

{"title":"Novel two-scale network structured (TiBw + Ti2Cu)/Ti6Al4V composites: Design, microstructure, mechanical properties and fracture behavior","authors":"Zhongqiang Zhang , Guopeng Wang , Yang Gao , Zekun Zheng , Xiaoqi Mao , Junjie Xu , Xiang Li , Yongqing Fu , Minghua Chen , Shanna Xu , Longlong Dong","doi":"10.1016/j.compositesa.2025.108868","DOIUrl":"10.1016/j.compositesa.2025.108868","url":null,"abstract":"<div><div>Titanium matrix composites with homogeneous microstructures often exhibit inferior mechanical properties, thus severely restricting their applications for engineering-structural parts. Inspired by nature’s fine microstructures, we have <em>in-situ</em> constructed a novel two-scale structured (TiB<sub>w</sub> + Ti<sub>2</sub>Cu)/Ti6Al4V composites for significantly improve the mechanical properties of the Ti matrix, i.e., with the first-scale network reinforced by micro-TiB<sub>w</sub> and the second-scale network reinforced by nano-Ti<sub>2</sub>Cu. Average sizes of α-Ti were significantly refined with adding 2.53 vol% TiB<sub>w</sub>, and <em>in-situ</em> formed TiB<sub>w</sub> was favorable for formation of equiaxed α-Ti. At 293 K, yield strength and ultimate tensile strength (UTS) of (2.53 vol% TiB<sub>w</sub> + 3.02 vol% Ti<sub>2</sub>Cu)/Ti6Al4V composites were 1160 MPa and 1272 MPa, respectively, which were 47.2 % and 41.0 % higher than that of Ti6Al4V. Moreover, their maximum strength (514 MPa) is 27.4 % higher than that of Ti6Al4V alloy at 873 K. The remarkable increase in strength for the composites is attributed to fine-grain strengthening and precipitation-strengthening from Ti<sub>2</sub>Cu nanoparticles, and high temperature strength is due to the pinning effect of TiB<sub>w</sub> in the softened matrix and hinderance of flow in the matrix.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108868"},"PeriodicalIF":8.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643838","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}

引用次数: 0

Effect of methods for micro-fillers dispersion in-between plies on fatigue performance of thermoplastic composites

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-14 DOI: 10.1016/j.compositesa.2025.108859

Anurag Sharma, Sunil C. Joshi

The effect of micro-size core–shell particles (CSPs) dispersion in-between the plies of CF/PA6 laminates on its tension–tension (T–T) fatigue performance is studied. The CSPs were dispersed using two different dispersion methods, namely: a sieve-assisted process and a pump-assisted process at ply the interfaces. The heat-assisted compression molding was used to fabricate the laminates. Baseline tensile and T–T fatigue tests were conducted to compare performance of the laminates fabricated using these two methods and analyzed based on the S-N curve, stiffness degradation, and energy dissipation. It was observed that the uniform CSPs dispersion improved the tensile strength and fatigue life respectively by 1.1 and 3 times, when pump-assisted dispersion was used. Furthermore, through the statistical reliability study of tensile data, it was observed that the pump-assisted method is better, more reliable, and consistent. The fatigue test results also showed that both dispersion methods affect the stiffness degradation and energy dissipation significantly.

{"title":"Effect of methods for micro-fillers dispersion in-between plies on fatigue performance of thermoplastic composites","authors":"Anurag Sharma, Sunil C. Joshi","doi":"10.1016/j.compositesa.2025.108859","DOIUrl":"10.1016/j.compositesa.2025.108859","url":null,"abstract":"<div><div>The effect of micro-size core–shell particles (CSPs) dispersion in-between the plies of CF/PA6 laminates on its tension–tension (T–T) fatigue performance is studied. The CSPs were dispersed using two different dispersion methods, namely: a sieve-assisted process and a pump-assisted process at ply the interfaces. The heat-assisted compression molding was used to fabricate the laminates. Baseline tensile and T–T fatigue tests were conducted to compare performance of the laminates fabricated using these two methods and analyzed based on the S-N curve, stiffness degradation, and energy dissipation. It was observed that the uniform CSPs dispersion improved the tensile strength and fatigue life respectively by 1.1 and 3 times, when pump-assisted dispersion was used. Furthermore, through the statistical reliability study of tensile data, it was observed that the pump-assisted method is better, more reliable, and consistent. The fatigue test results also showed that both dispersion methods affect the stiffness degradation and energy dissipation significantly.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108859"},"PeriodicalIF":8.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643841","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}

引用次数: 0

Effect on the Joule heating properties of porous C/C composites by the addition of different types of carbon

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-14 DOI: 10.1016/j.compositesa.2025.108862

Ke Zhao, Lei Liu, Wei Feng, Xin Du, Siqi Wei, Ping Wang, Zhong Yang, Yongchun Guo

The functional properties of C/C composites have attracted increasing attention owing to their excellent electrical conductivity and thermal stability, which make them promising candidates for electrothermal materials. To investigate the influence of carbonaceous fillers on Joule heating and mechanical properties, three distinct filler types-graphite (GF), carbon powder (CP) and carbon black (CB) were added to wet-laid C/C composite sheets. Experimental results showed that the resistivity, tensile strength and electrothermal properties of C/C-GF were significantly improved compared with other materials. Due to the high crystallinity of GF, which was conducive to carrier transport, the resistivity of C/C-GF composite sheet was greatly reduced to 2.0789 Ω·m × 10⁻⁴. In addition, the unique structure of graphite not only reinforced the lamellar structure but also minimized sturctural defects. These combined effects resulted in an 80 % improvement in tensile strength of C/C-GF composite relative to the baseline material C/C-GF composite also had good performance in Joule heating performance. It could reach 140 °C in 70–80 s at 3 V voltage with a power density of 5.22 kW/m². This was due to the excellent performance of GF, which could generate more heat under the same conditions, and the heating efficiency was higher. In addition, it also exhibited excellent electrothermal behavior and good electrothermal stability in intermittent energized cycles and long-term service stability tests. Compared with commercially available polymer-based electrothermal films, C/C-GF composite emerges, as a high-performance alternative exhibiting higher steady-state temperature, improved temperature uniformity, and enchanced thermal stability. These advantages position this composite material as a promising solution for advanced electrothermal applications.

{"title":"Effect on the Joule heating properties of porous C/C composites by the addition of different types of carbon","authors":"Ke Zhao, Lei Liu, Wei Feng, Xin Du, Siqi Wei, Ping Wang, Zhong Yang, Yongchun Guo","doi":"10.1016/j.compositesa.2025.108862","DOIUrl":"10.1016/j.compositesa.2025.108862","url":null,"abstract":"<div><div>The functional properties of C/C composites have attracted increasing attention owing to their excellent electrical conductivity and thermal stability, which make them promising candidates for electrothermal materials. To investigate the influence of carbonaceous fillers on Joule heating and mechanical properties, three distinct filler types-graphite (GF), carbon powder (CP) and carbon black (CB) were added to wet-laid C/C composite sheets. Experimental results showed that the resistivity, tensile strength and electrothermal properties of C/C-GF were significantly improved compared with other materials. Due to the high crystallinity of GF, which was conducive to carrier transport, the resistivity of C/C-GF composite sheet was greatly reduced to 2.0789 Ω·m × 10<sup>−4</sup>. In addition, the unique structure of graphite not only reinforced the lamellar structure but also minimized sturctural defects. These combined effects resulted in an 80 % improvement in tensile strength of C/C-GF composite relative to the baseline material C/C-GF composite also had good performance in Joule heating performance. It could reach 140 °C in 70–80 s at 3 V voltage with a power density of 5.22 kW/m<sup>2</sup>. This was due to the excellent performance of GF, which could generate more heat under the same conditions, and the heating efficiency was higher. In addition, it also exhibited excellent electrothermal behavior and good electrothermal stability in intermittent energized cycles and long-term service stability tests. Compared with commercially available polymer-based electrothermal films, C/C-GF composite emerges, as a high-performance alternative exhibiting higher steady-state temperature, improved temperature uniformity, and enchanced thermal stability. These advantages position this composite material as a promising solution for advanced electrothermal applications.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108862"},"PeriodicalIF":8.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642895","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}

引用次数: 0

Development of Eco-Friendly synergistic intumescent flame retardants for enhanced thermal stability and fire resistance of biomass TPU composites

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-13 DOI: 10.1016/j.compositesa.2025.108844

Chane-Yuan Yang , Ting-Yu Liang , Chin-Lung Chiang , Hsu-Chiang Kuan , Chen-Feng Kuan

This study presents the development of a novel synergistic intumescent flame retardant (IFR) composed of tetraethoxysilane (TEOS) and bio-based chitosan (CS) as the carbon source, ammonium polyphosphate (APP) as the acid source, and melamine cyanurate (MCA) as the gas source. The novel TEOS/CS/APP/MCA (TCAM) IFR, which exhibited both reactive and coupling compatibility, was incorporated into biomass thermoplastic polyurethane (TPU) at varying loadings to fabricate TPU/TCAM composites. Comprehensive analysis and characterization demonstrated that the TPU composite with 20% TCAM loading exhibited superior flame retardancy and thermal stability. Vertical combustion tests (UL-94) revealed that TCAM incorporation eliminated melt dripping and enabled the TPU/TCAM 20% composite to achieve the highest V-0 rating, while the limiting oxygen index (LOI) increased significantly from 22% for neat TPU to 28%. Cone calorimetry test results indicated substantial reductions in the peak heat release rate, total heat release, and peak smoke production rate. Thermogravimetric analysis (TGA) revealed a remarkable increase in char residue from 0.52 wt% for pure TPU to 17.78 wt% for TPU/TCAM 20%, highlighting the formation of an expanded char layer that effectively served as a barrier in the condensed phase. Furthermore, TCAM demonstrated free radical quenching in the gaseous phase and synergistic flame retardancy, as confirmed by FTIR, TG-IR, SEM, XPS, and Raman spectroscopy analyses. This work verified the effectiveness of bio-based chitosan in enhancing the flame retardancy of biomass TPU, offering a high-performance and sustainable solution aligned with the principles of the circular economy.

{"title":"Development of Eco-Friendly synergistic intumescent flame retardants for enhanced thermal stability and fire resistance of biomass TPU composites","authors":"Chane-Yuan Yang , Ting-Yu Liang , Chin-Lung Chiang , Hsu-Chiang Kuan , Chen-Feng Kuan","doi":"10.1016/j.compositesa.2025.108844","DOIUrl":"10.1016/j.compositesa.2025.108844","url":null,"abstract":"<div><div>This study presents the development of a novel synergistic intumescent flame retardant (IFR) composed of tetraethoxysilane (TEOS) and bio-based chitosan (CS) as the carbon source, ammonium polyphosphate (APP) as the acid source, and melamine cyanurate (MCA) as the gas source. The novel TEOS/CS/APP/MCA (TCAM) IFR, which exhibited both reactive and coupling compatibility, was incorporated into biomass thermoplastic polyurethane (TPU) at varying loadings to fabricate TPU/TCAM composites. Comprehensive analysis and characterization demonstrated that the TPU composite with 20% TCAM loading exhibited superior flame retardancy and thermal stability. Vertical combustion tests (UL-94) revealed that TCAM incorporation eliminated melt dripping and enabled the TPU/TCAM 20% composite to achieve the highest V-0 rating, while the limiting oxygen index (LOI) increased significantly from 22% for neat TPU to 28%. Cone calorimetry test results indicated substantial reductions in the peak heat release rate, total heat release, and peak smoke production rate. Thermogravimetric analysis (TGA) revealed a remarkable increase in char residue from 0.52 wt% for pure TPU to 17.78 wt% for TPU/TCAM 20%, highlighting the formation of an expanded char layer that effectively served as a barrier in the condensed phase. Furthermore, TCAM demonstrated free radical quenching in the gaseous phase and synergistic flame retardancy, as confirmed by FTIR, TG-IR, SEM, XPS, and Raman spectroscopy analyses. This work verified the effectiveness of bio-based chitosan in enhancing the flame retardancy of biomass TPU, offering a high-performance and sustainable solution aligned with the principles of the circular economy.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108844"},"PeriodicalIF":8.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643840","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}

引用次数: 0

Rapid fatigue life estimation of drilled CFRP laminates and titanium stacks using thermography

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-12 DOI: 10.1016/j.compositesa.2025.108856

José Vicente Calvo , Norberto Feito , María Henar Miguélez , Eugenio Giner

In this work, we estimate the fatigue life of drilled Carbon Fiber Reinforced Polymer (CFRP) laminates making use of the temperature evolution of the component. As the self-heating effect due to cyclic loading causes a temperature change in the initial stages of the loading, the slope of the temperature variation ΔT versus the number of cycles can be used to estimate the remaining life. We have validated the applicability of the procedure for drilled laminates under different cutting conditions, and for drilled Ti-CFRP stacks. Infrared thermography was used to obtain the temperature variation during cycling loading. The results proved that the obtained adjusted model can effectively estimate the fatigue life of CFRP laminates with delamination damage or thermal damage with an error of 15%, proving the usefulness of this methodology for drilled and stacked laminates.

引用次数: 0

Characterization of frictional behavior of fiber reinforced composites during forming: A review

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-08 DOI: 10.1016/j.compositesa.2025.108852

Tasnia J. Nur, Cecily A. Ryan, Dilpreet S. Bajwa, Doug S. Cairns, Chris Ridgard, Roberta Amendola

The forming process of composite laminates requires slippage to occur between adjacent plies within the lay-up and between the forming tool and the laminate until a desired final shape is achieved. Constraints imposed due to frictional stresses are often responsible for the occurrence of common forming defects, which later affect the performance of the final composite part. Hence tool-ply and interply friction characterization during composite forming has received increased attention in the last decade. Because no standardized test method exists for characterizing friction during forming, this review offers a comprehensive overview of experimental approaches and their development over the years. A detailed discussion and critical comparison of the two widely adopted test methods (pull-out and pull-through) is included. Experimental outputs and their relationship with the Stribeck curve are also addressed to analyze the effect of the forming process parameters on the frictional behavior of composites.

{"title":"Characterization of frictional behavior of fiber reinforced composites during forming: A review","authors":"Tasnia J. Nur, Cecily A. Ryan, Dilpreet S. Bajwa, Doug S. Cairns, Chris Ridgard, Roberta Amendola","doi":"10.1016/j.compositesa.2025.108852","DOIUrl":"10.1016/j.compositesa.2025.108852","url":null,"abstract":"<div><div>The forming process of composite laminates requires slippage to occur between adjacent plies within the lay-up and between the forming tool and the laminate until a desired final shape is achieved. Constraints imposed due to frictional stresses are often responsible for the occurrence of common forming defects, which later affect the performance of the final composite part. Hence tool-ply and interply friction characterization during composite forming has received increased attention in the last decade. Because no standardized test method exists for characterizing friction during forming, this review offers a comprehensive overview of experimental approaches and their development over the years. A detailed discussion and critical comparison of the two widely adopted test methods (pull-out and pull-through) is included. Experimental outputs and their relationship with the Stribeck curve are also addressed to analyze the effect of the forming process parameters on the frictional behavior of composites.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108852"},"PeriodicalIF":8.1,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620893","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}

引用次数: 0

Facile construction of bio-based organic–inorganic integrated magnesium hydroxide rod-crystal: The formation of a dual barrier to enhance fire safety and smoke suppression of epoxy resin

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-07 DOI: 10.1016/j.compositesa.2025.108853

Yao Yin , Yue Chen , Bihe Yuan , Zhipeng Zhang , Ranzhao Shen

Epoxy resin (EP) is a widely utilized polymer, but it exhibits high flammability. With the growing emphasis on environment friendliness and sustainability, the development of environmentally friendly EP flame-retardant structure has become a major research focus. Consequently, a bio-based organic–inorganic integrated magnesium hydroxide rod-crystal (RMH@AP-Fe) flame retardant, was constructed via a facile and green supramolecular assembly approach. The RMH@AP-Fe endows effective fire safety performance for EP composites. Specifically, as compared to pure EP, the peak heat release rate, peak smoke release rate, and peak CO content of EP/20RMH@AP-Fe decreases by 37.2 %, 37.0 %, and 50.9 %, respectively. Subsequently, the flame-retardant mechanisms of RMH@AP-Fe in both the gaseous phase and condensed phase applied in EP were further explored. This study presents a new and viable approach for designing green, fire safety, and smoke suppression EP composites.

{"title":"Facile construction of bio-based organic–inorganic integrated magnesium hydroxide rod-crystal: The formation of a dual barrier to enhance fire safety and smoke suppression of epoxy resin","authors":"Yao Yin , Yue Chen , Bihe Yuan , Zhipeng Zhang , Ranzhao Shen","doi":"10.1016/j.compositesa.2025.108853","DOIUrl":"10.1016/j.compositesa.2025.108853","url":null,"abstract":"<div><div>Epoxy resin (EP) is a widely utilized polymer, but it exhibits high flammability. With the growing emphasis on environment friendliness and sustainability, the development of environmentally friendly EP flame-retardant structure has become a major research focus. Consequently, a bio-based organic–inorganic integrated magnesium hydroxide rod-crystal (RMH@AP-Fe) flame retardant, was constructed via a facile and green supramolecular assembly approach. The RMH@AP-Fe endows effective fire safety performance for EP composites. Specifically, as compared to pure EP, the peak heat release rate, peak smoke release rate, and peak CO content of EP/20RMH@AP-Fe decreases by 37.2 %, 37.0 %, and 50.9 %, respectively. Subsequently, the flame-retardant mechanisms of RMH@AP-Fe in both the gaseous phase and condensed phase applied in EP were further explored. This study presents a new and viable approach for designing green, fire safety, and smoke suppression EP composites.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108853"},"PeriodicalIF":8.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601776","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}

引用次数: 0

Nb2CTx MXene/starch hybrid aerogels supported flame-retardant phase change composites with superior solar-thermal conversion efficiency and outstanding electromagnetic interference shielding

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-07 DOI: 10.1016/j.compositesa.2025.108854

Yuwei Liu , Jiayi Tang , Jiuao Wang , Hao Yue , Zongliang Du , Xu Cheng , Haibo Wang , Xiaosheng Du

The development of form-stable phase change materials (PCMs) that combine solar-thermal storage capacity, electromagnetic interference (EMI) shielding performance, and flame-retardancy is crucial for effective building energy management and conservation. Herein, innovative Nb₂CT_x MXene/starch hybrid aerogels supported phase change composites (MSPCMs) with superior solar-thermal conversion efficiency, EMI shielding and flame-retardancy were fabricated by selectively etching of Nb₂AlC MAX, modifying starch with sodium phytate, constructing MXene/starch hybrid aerogels (MSPAs), and impregnating aerogels with molten n-eicosane. Differential scanning calorimetry (DSC) analyses revealed that MSPCMs exhibited high PCM loading yield (up to 498.9 %) and heat storage density (up to 232.1 J/g). Nb₂CT_x MXene nanosheets significantly enhanced the solar-thermal storage efficiency (up to 87.9 %) and EMI shielding performance of MSPCMs. Additionally, increasing the content of sodium phytate in MSPAs noticeably reduced the peak heat release rate (pHRR) and the total heat release (THR) of MSPCMs, thereby improving the flame-retardant properties of the synthesized PCM composites.

{"title":"Nb2CTx MXene/starch hybrid aerogels supported flame-retardant phase change composites with superior solar-thermal conversion efficiency and outstanding electromagnetic interference shielding","authors":"Yuwei Liu , Jiayi Tang , Jiuao Wang , Hao Yue , Zongliang Du , Xu Cheng , Haibo Wang , Xiaosheng Du","doi":"10.1016/j.compositesa.2025.108854","DOIUrl":"10.1016/j.compositesa.2025.108854","url":null,"abstract":"<div><div>The development of form-stable phase change materials (PCMs) that combine solar-thermal storage capacity, electromagnetic interference (EMI) shielding performance, and flame-retardancy is crucial for effective building energy management and conservation. Herein, innovative Nb<sub>2</sub>CT<sub>x</sub> MXene/starch hybrid aerogels supported phase change composites (MSPCMs) with superior solar-thermal conversion efficiency, EMI shielding and flame-retardancy were fabricated by selectively etching of Nb<sub>2</sub>AlC MAX, modifying starch with sodium phytate, constructing MXene/starch hybrid aerogels (MSPAs), and impregnating aerogels with molten <em>n</em>-eicosane. Differential scanning calorimetry (DSC) analyses revealed that MSPCMs exhibited high PCM loading yield (up to 498.9 %) and heat storage density (up to 232.1 J/g). Nb<sub>2</sub>CT<sub>x</sub> MXene nanosheets significantly enhanced the solar-thermal storage efficiency (up to 87.9 %) and EMI shielding performance of MSPCMs. Additionally, increasing the content of sodium phytate in MSPAs noticeably reduced the peak heat release rate (pHRR) and the total heat release (THR) of MSPCMs, thereby improving the flame-retardant properties of the synthesized PCM composites.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108854"},"PeriodicalIF":8.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592633","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}

引用次数: 0

Morphogenic composites: Frontal polymerization induced autonomously shaped composites

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-07 DOI: 10.1016/j.compositesa.2025.108827

Ivan C. Wu, Sagar Vyas, Philippe Geubelle, Jeffery W. Baur

Traditional shaping and curing of continuous fiber composites is an equipment, time, labor, and energy intensive process. This work investigates the integration of frontal polymerization (FP) with additively printed continuous-fiber tows to produce composite structures with controlled curvature. We combine the patterned tows with frontally polymerizable gel of poly(dicyclopentadiene) (pDCPD) to achieve rapid, autonomous, energy efficient, and predictable 3D curvatures, referred to as morphogenic composites. Due to the transient wave-like nature of FP, the propagation direction of the reaction front provides an additional means to vary the final shape of the morphed composite part. Digital image correlation and numerical simulation are used to quantify the influence of the transient strain effects, initiation locations, and front propagation paths on the composite’s final 3D shape. Overall, morphogenic composites can be autonomously and rapidly morphed to predictable and diverse 3D shapes through frontal polymerization with low energy and without tooling.

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引用次数: 0

Analysis of the effect of different milling strategies on the surface quality of multiphase fibers and particle reinforced polymer matrix composites

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing

Pub Date : 2025-03-05 DOI: 10.1016/j.compositesa.2025.108847

Weiwei Xu , Qilin Li , Liyu Wang , Qiaosheng Feng , Songmei Yuan

In order to obtain the high-performance milling technology of Multiphase fiber particle reinforced resin matrix composites (MFPRP), updown milling experiments were carried out on different planes of MFPRP. Through data statistics, experimental observation, and mechanism analysis, the effects of cutting force, surface roughness and surface morphology on surface quality were qualitatively and quantitatively studied. The results show that up milling for the XOY plane produces smaller cutting forces and only produces aramid fiber burr damage on the machined surface at the scale of a few hundred micrometers; whereas the surface quality for the down milling for the XOZ plane is higher, with the smallest surface roughness obtained, and the machining of a smooth surface. Meanwhile, different milling strategies for up milling of XOY plane and down milling of XOZ plane are obtained based on genetic algorithm, which provides theoretical and experimental bases for milling of fiber reinforced composites.

{"title":"Analysis of the effect of different milling strategies on the surface quality of multiphase fibers and particle reinforced polymer matrix composites","authors":"Weiwei Xu , Qilin Li , Liyu Wang , Qiaosheng Feng , Songmei Yuan","doi":"10.1016/j.compositesa.2025.108847","DOIUrl":"10.1016/j.compositesa.2025.108847","url":null,"abstract":"<div><div>In order to obtain the high-performance milling technology of Multiphase fiber particle reinforced resin matrix composites (MFPRP), updown milling experiments were carried out on different planes of MFPRP. Through data statistics, experimental observation, and mechanism analysis, the effects of cutting force, surface roughness and surface morphology on surface quality were qualitatively and quantitatively studied. The results show that up milling for the XOY plane produces smaller cutting forces and only produces aramid fiber burr damage on the machined surface at the scale of a few hundred micrometers; whereas the surface quality for the down milling for the XOZ plane is higher, with the smallest surface roughness obtained, and the machining of a smooth surface. Meanwhile, different milling strategies for up milling of XOY plane and down milling of XOZ plane are obtained based on genetic algorithm, which provides theoretical and experimental bases for milling of fiber reinforced composites.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108847"},"PeriodicalIF":8.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578129","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}

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