Composites Communications最新文献_第3页

The self-powered cathodic protection effect of flexible PDMS-based piezoelectric composites in a simulated pressure-alternating marine environment

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-15 DOI: 10.1016/j.coco.2024.102166

Rui Liu , Yuxin Guan , Yu Cui , Fandi Meng , Fuhui Wang , Li Liu

引用次数: 0

Modified negative permittivity and X-band microwave absorption in polyvinyl Alcohol–MWCNT metacomposites 聚乙烯醇-MWCNT 元复合材料中的改性负介电常数和 X 波段微波吸收率

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-13 DOI: 10.1016/j.coco.2024.102161

Swetha P. , Sindhu Swaminathan , Kishore Sridharan , Mohamed Shahin T.H. , Faheema S.

{"title":"Modified negative permittivity and X-band microwave absorption in polyvinyl Alcohol–MWCNT metacomposites","authors":"Swetha P. , Sindhu Swaminathan , Kishore Sridharan , Mohamed Shahin T.H. , Faheema S.","doi":"10.1016/j.coco.2024.102161","DOIUrl":"10.1016/j.coco.2024.102161","url":null,"abstract":"<div><div>Metacomposite films with modifiable negative permittivity are promising for wearable cloaking, sensing, electromagnetic interference shielding, and microwave absorption. The purpose of this study is to fabricate metacomposite films composed of polyvinyl alcohol (PVA) and multi-walled carbon nanotubes (MWCNTs) and demonstrate control of permittivity by varying MWCNT concentration. Drude-Lorentz and Drude models show negative permittivity behaviour as the MWCNT content increases. The Drude-Lorentz and Drude models confirm that at 1 wt% MWCNT loading, percolation occurs, leading to increased conductivity and a transition from positive to negative permittivity (−9 at 10 kHz and −200 at 34 kHz). Drude's model predicts negative permittivity across the entire frequency range of PVA with 3 wt% MWCNT. Metacomposite films exhibit electrical percolation, conductivity switching, permittivity shift, and capacitive-to-inductive transitions. These composites also demonstrate excellent X-band microwave absorption properties (up to −50 dB reflection loss) and a shielding efficiency of 22 dB, suggesting an absorption-dominated shielding mechanism.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"52 ","pages":"Article 102161"},"PeriodicalIF":6.5,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663637","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

Rapidly self-healing, highly conductive, stretchable, body-attachable hydrogel sensor for soft electronics 用于软电子设备的快速自愈合、高导电、可拉伸、可贴合人体的水凝胶传感器

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-13 DOI: 10.1016/j.coco.2024.102158

Ashwin Khadka , Shrayas Pradhan , Edmund Samuel , Bhavana Joshi , Hao Gao , Ali Aldalbahi , Govindasami Periyasami , Hae-Seok Lee , Sam S. Yoon

引用次数: 0

Effect of matrix microstructure on micro- and macro-mechanical properties of 2.5D woven oxide fiber reinforced oxide matrix composites 基体微结构对 2.5D 氧化物纤维增强氧化物基复合材料微观和宏观力学性能的影响

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-12 DOI: 10.1016/j.coco.2024.102159

Xiaofei Chen , Xinyuan Lv , Haitao Liu , Ru Jiang , Xun Sun

{"title":"Effect of matrix microstructure on micro- and macro-mechanical properties of 2.5D woven oxide fiber reinforced oxide matrix composites","authors":"Xiaofei Chen , Xinyuan Lv , Haitao Liu , Ru Jiang , Xun Sun","doi":"10.1016/j.coco.2024.102159","DOIUrl":"10.1016/j.coco.2024.102159","url":null,"abstract":"<div><div>A comprehensive learning of the mechanical behavior change mechanism of oxide/oxide composites is of great significance as a guide for their industrial applications. This study focused on examining how matrix microstructure impacted the micro- and macro-mechanical properties of the composites mainly by nanoindentation tests, macro-mechanical tests and x-ray computed tomography. The results showed that the sintering phenomenon of matrix sintered at 1200 °C was more obvious, and there were visible transverse and longitudinal cracks. The in-situ modulus of matrix and interfacial shear modulus of the composite increased by 61.1 % and 36.4 %, respectively, with the increase of matrix sintering densification. Combined with these micro-mechanical parameters of the composites, the He-Hutchinson model predicted the same crack propagation modes as those obtained from fracture toughness tests. Moreover, more matrix cracks directly led to a 45.4 % reduction in the flexural strength of the composites sintered at 1200 °C compared to that sintered at 1100 °C. In addition, a comparison analysis was conducted on the evolution of microstructure, micro- and macro-mechanical properties of 2.5D and 2D composites with the same preparation parameters.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"52 ","pages":"Article 102159"},"PeriodicalIF":6.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663635","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

Realizing radio-frequency epsilon-near-zero response via embedding cobalt nanoparticles into polyimide 通过将钴纳米粒子嵌入聚酰亚胺实现射频ε近零响应

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-12 DOI: 10.1016/j.coco.2024.102160

Jinjiu Qi , Yuan Yuan , Qifa He , Pengtao Yang , Hua-Xin Peng , Runhua Fan

引用次数: 0

Electro–centrifugal spinning of core–sheath composite yarns with micro/nano structures for self–powered sensing 电离心纺制具有微米/纳米结构的自供电传感芯鞘复合纱线

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-09 DOI: 10.1016/j.coco.2024.102141

Buguang Zhou , Xiangfei Bu , Jiecong Li , Can Gao , Xiakeer Saitaer , Jiansheng Guo

{"title":"Electro–centrifugal spinning of core–sheath composite yarns with micro/nano structures for self–powered sensing","authors":"Buguang Zhou , Xiangfei Bu , Jiecong Li , Can Gao , Xiakeer Saitaer , Jiansheng Guo","doi":"10.1016/j.coco.2024.102141","DOIUrl":"10.1016/j.coco.2024.102141","url":null,"abstract":"<div><div>In recent years, triboelectric nanogenerators (TENGs) have garnered extensive attention in the realm of self-powered sensors due to their capability to harness low-frequency mechanical energy. Among these, textile-based triboelectric nanogenerator stands out as a pivotal platform for wearable sensing. Nevertheless, conventional approaches, such as directly coating triboelectric materials on fabrics, often compromise the inherent properties. In this study, we utilized our self-developed electro-centrifugal spinning equipment to continuously fabricate core-sheath yarns with micro/nano structures, resulting in the development of pocket-shaped fabric-based (PF) TENGs. This innovative design preserves the original softness and breathability of the fabric while delivering substantial electrical output owing to its layered structure and extensive specific surface area. PF–TENGs can accurately detect electrical output signals from various motion states. This electro–centrifugal spinning technology offers new research directions and sensing application prospects for self-powered smart textile development.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"53 ","pages":"Article 102141"},"PeriodicalIF":6.5,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705884","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

Comprehensive properties analysis of epoxy composites synergistically toughened with liquid nitrile rubber and polyethersulfone 液态丁腈橡胶和聚醚砜协同增韧环氧树脂复合材料的综合性能分析

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-08 DOI: 10.1016/j.coco.2024.102154

Chuang Wang , XinFa Yang , HaoLin Zhang , Chi Chen , ZaiQin Zhang , He Li

{"title":"Comprehensive properties analysis of epoxy composites synergistically toughened with liquid nitrile rubber and polyethersulfone","authors":"Chuang Wang , XinFa Yang , HaoLin Zhang , Chi Chen , ZaiQin Zhang , He Li","doi":"10.1016/j.coco.2024.102154","DOIUrl":"10.1016/j.coco.2024.102154","url":null,"abstract":"<div><div>In this paper, epoxy resin (EP) composites with different phase structures were prepared by introducing hydroxyl-terminated liquid nitrile rubber (HTBN) and hydroxyl-terminated polyethersulfone (PES) individually or simultaneously into the resin matrix. The results revealed that the rational distribution of phase structure of rigid PES and flexible HTBN can effectively contributed to the enhancement in their mechanical and electrical insulation strengths. The synergistic effect of the two reinforcing fillers granted the optimized ternary composite a tougher structural network, leading to significant improvements of 73.13 % and 18.98 % in mechanical impact strength and electrical breakdown strength, respectively, compared to the pristine EP. Furthermore, compared to HTBN, PES exhibited inhibited HTBN dielectric interfacial polarization and EP molecular chain segment relaxation, resulting in decreased dielectric constant and loss in the composites. This study provide insights into the dielectric properties and design strategies for the development of resin-based dielectric materials, ensuring their broader applicability.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"52 ","pages":"Article 102154"},"PeriodicalIF":6.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663632","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

Design optimization of continuous fiber composites with thermo-mechanical coupling and load uncertainties 具有热机械耦合和负载不确定性的连续纤维复合材料的设计优化

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-07 DOI: 10.1016/j.coco.2024.102143

Zhelong He , Jing Zheng , Qiang Chen , Jie Liu

{"title":"Design optimization of continuous fiber composites with thermo-mechanical coupling and load uncertainties","authors":"Zhelong He , Jing Zheng , Qiang Chen , Jie Liu","doi":"10.1016/j.coco.2024.102143","DOIUrl":"10.1016/j.coco.2024.102143","url":null,"abstract":"<div><div>This paper introduces a theoretical framework for the design optimization of continuous fiber composites reinforced with continuous fiber trajectories subject to thermo-mechanical coupling and load uncertainties. Different uniform temperature variations are applied in the structure to investigate the influence of ambient temperature change on the structural performance. To consider the external load uncertainties, a robust design optimization model is proposed where the loads are modeled as hybrid variables, namely magnitudes as random variables and directions as interval variables, with the robust objective determined through a hybrid orthogonal polynomial expansion method. Furthermore, we use a level-set function to represent the structural boundary, with its evolution driven by shape derivatives calculated based on uncertainty analysis. The continuous fiber paths are subsequently determined by the level-set isoline extracted from the structural boundary, which in turn influences the structural mechanical performance due to the material anisotropy of composites. The continuity of continuous fiber and the equal space between adjacent trajectories largely ensure the additive manufacturability of the composites. Three numerical examples are presented to demonstrate the effectiveness of the developed framework. The results show that the ambient temperature variations and load uncertainties largely impact the optimized topology and fiber infill patterns of composites, thus are important to be considered in the design stage. Moreover, the optimized structure can have a 5-fold stiffness per unit mass compared with the initial design thus largely increasing the material efficiency in carrying external uncertain loads.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"52 ","pages":"Article 102143"},"PeriodicalIF":6.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663636","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

Study on the photocatalytic properties of the ternary ZnO/MgAl-LDH/FeOOH composite photocatalyst with a Type-II and S-scheme linked carrier migration mechanism in degrading TC solution 具有 II 型和 S 型连接载流子迁移机制的 ZnO/MgAl-LDH/FeOOH 三元复合光催化剂在降解 TC 溶液中的光催化性能研究

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-07 DOI: 10.1016/j.coco.2024.102156

Xuying Duan , Fucheng Yu , Ruobing Jiang , Jinlong Ren , Jielin Zhang , Chenchen Feng , Cuixia Li , Kechao Hu , Xiaogang Hou

{"title":"Study on the photocatalytic properties of the ternary ZnO/MgAl-LDH/FeOOH composite photocatalyst with a Type-II and S-scheme linked carrier migration mechanism in degrading TC solution","authors":"Xuying Duan , Fucheng Yu , Ruobing Jiang , Jinlong Ren , Jielin Zhang , Chenchen Feng , Cuixia Li , Kechao Hu , Xiaogang Hou","doi":"10.1016/j.coco.2024.102156","DOIUrl":"10.1016/j.coco.2024.102156","url":null,"abstract":"<div><div>The synthesis of high-performance photocatalysts represents a pivotal aspect of research into photocatalytic degradation technology. In order to address this need, a novel ZnO/MgAl-LDH/FeOOH ternary composite photocatalyst has been synthesized via a multi-step process involving the hydrothermal, calcination and ultrasonic-assisted wet impregnation methods. The ternary composite photocatalyst was observed to demonstrate effective separation of photogenerated carriers in photocatalysis, following a Type-II and S-scheme linked carrier migration mechanism. An examination of the photocatalytic characteristics of the composite photocatalyst in the degradation of a tetracycline (TC) solution revealed that the reduction of •O<sub>2</sub><sub><sup>-</sup></sub> radicals and the oxidation of •OH radicals resulted in the effective degradation of the TC solution. The degradation efficiency of the TC solution under the photocatalysis of the ternary composite photocatalyst was observed to be 1.54, 1.11 and 3.15 times that of the single-component samples of ZnO, MgAl-LDH and FeOOH, respectively, in 30 min. Moreover, the degradation pathway of TC molecules under the photocatalysis of the composite has been elucidated. The research findings provide a foundation for further investigation into this composite photocatalyst.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"52 ","pages":"Article 102156"},"PeriodicalIF":6.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663630","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

Polypyrrole-bound carbon nanotube conductive polysulfone membranes for self-cleaning of fouling 用于污垢自清洁的聚吡咯结合碳纳米管导电聚砜膜

IF 6.5 2区材料科学

Composites Communications Pub Date : 2024-11-06 DOI: 10.1016/j.coco.2024.102155

Yingxin Liu , Minhua Jiang , Junying Hu , Zixuan Guo , Jian Liu , Xinxin Fu , Li Liu , Shaohua Jiang

{"title":"Polypyrrole-bound carbon nanotube conductive polysulfone membranes for self-cleaning of fouling","authors":"Yingxin Liu , Minhua Jiang , Junying Hu , Zixuan Guo , Jian Liu , Xinxin Fu , Li Liu , Shaohua Jiang","doi":"10.1016/j.coco.2024.102155","DOIUrl":"10.1016/j.coco.2024.102155","url":null,"abstract":"<div><div>A novel conductive membrane, polypyrrole carbon nanotubes polysulfone (PPy-CNT-PSF), was successfully synthesized using the membrane phase infiltration in-situ polymerization method (MPIP). The resulting PPy-CNT-PSF, utilized as an anode in the electrochemical filtration reactor, exhibited a chain-like morphology of PPy extending from within to the exterior of the PSF membrane, effectively anchoring the CNT layer on its surface and establishing a stable conductive network with a surface resistance of 0.142 ± 0.052 kΩ/cm. Its electrical conductivity surpasses that of most conductive membranes derived from pyrrole (Py). Furthermore, the structural integrity of this conductive membrane remained intact following exposure to chlorine. Cyclic voltammetry (CV) analysis revealed a subtle redox peak with no significant alteration in surface structure after 50 CV cycles. This reaction can be attributed to a Fenton-like reaction process due to Fe presence detected by EDX on the surface. Current-time curves under constant potential further confirmed that the PPy-CNT-PSF conductive membrane possesses both a stable conductive network and favorable electrode stability. Additionally, self-cleaning occurred when voltage was applied during electrochemical experiments utilizing a conductive membrane anode paired with a Ti cathode due to electrostatic repulsive forces. At an applied voltage of 20 V, removal efficiency and flux restoration achieved values of 97.63 % and 100 %, respectively. This straightforward yet effective approach is believed to hold promise for fabricating conductive membranes characterized by structural stability and electrode reliability for practical applications aimed at mitigating membrane fouling.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"52 ","pages":"Article 102155"},"PeriodicalIF":6.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663625","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