Composites Science and Technology最新文献

Ni@graphite carbon synergistic reinforcement sites penetrated hierarchical porous carbon boosting PCMs encapsulation and solar-thermal energy storage Ni@graphite碳协同增强位点穿透分层多孔碳，促进pcm封装和太阳能热能储存

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-12 DOI: 10.1016/j.compscitech.2025.111228

Guanxu Zhang , Sihua Ren , Cheng Dong , Wenjun Dong , Qingyang Du , Xiao Chen , Ang Li

{"title":"Ni@graphite carbon synergistic reinforcement sites penetrated hierarchical porous carbon boosting PCMs encapsulation and solar-thermal energy storage","authors":"Guanxu Zhang , Sihua Ren , Cheng Dong , Wenjun Dong , Qingyang Du , Xiao Chen , Ang Li","doi":"10.1016/j.compscitech.2025.111228","DOIUrl":"10.1016/j.compscitech.2025.111228","url":null,"abstract":"<div><div>Nano-carbon materials, owing to the sp<sup>2</sup>-hybridized carbon and highly porous structure, exhibit significant potential for incorporating phase change materials (PCMs) in solar energy storage and utilization. However, this potential is limited by their suboptimal photothermal responsiveness and the absence of hierarchical pore structures. Herein, we propose a dynamic regulation strategy to fabricate a Ni@graphite carbon-penetrated hierarchical carbon (Ni@C/C) structure for encapsulation of octadecanol (ODA) molecules. Ni@C active sites anchored within the hierarchical carbon framework rapidly capture photons. The coupling between Ni<sup>0</sup> nanoparticles (NPs) and graphitized carbon enhances the electric field distribution around the Ni<sup>0</sup> NPs, significantly improving photothermal performance. As a result, ODA/Ni@C/C demonstrated a remarkable photothermal conversion efficiency of 94.5 % under simulated one-sun irradiation. Notably, ODA/Ni@C/C exhibits a rapid response to ambient temperature changes, and sustains heat release over an extended period across a broad temperature range, demonstrating significant potential for applications in heat therapy masks and lithium-ion battery thermal management systems. This work provides both theoretical insights and practical guidance for the targeted design and preparation of advanced nano-carbon materials-based phase change composites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111228"},"PeriodicalIF":8.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072121","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

Spatio-temporal prediction of curing-induced deformation for composite structures using a hybrid CNN-LSTM and finite element approach 基于CNN-LSTM和有限元的复合材料结构固化变形时空预测

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-11 DOI: 10.1016/j.compscitech.2025.111225

Ying Deng , Zefu Li , Jie Zhi , Yonglin Chen , Jiping Chen , Weidong Yang , Yan Li

{"title":"Spatio-temporal prediction of curing-induced deformation for composite structures using a hybrid CNN-LSTM and finite element approach","authors":"Ying Deng , Zefu Li , Jie Zhi , Yonglin Chen , Jiping Chen , Weidong Yang , Yan Li","doi":"10.1016/j.compscitech.2025.111225","DOIUrl":"10.1016/j.compscitech.2025.111225","url":null,"abstract":"<div><div>Coordinated control of structural accuracy and mechanical properties is the key to composites manufacturing and the prerequisite for aerospace applications. Accurate and efficient prediction of curing-induced deformation is critical to minimizing process-induced defects and ensuring dimensional stability in fiber-reinforced polymer (FRP) composites manufacturing. Whereas traditional equation-based modeling requires extensive computational resources, data-driven surrogate models leverage machine learning to rapidly achieve accurate distortion prediction. In this study, we explored a novel spatio-temporal prediction model that incorporates the finite element (FE) method with a deep learning framework to efficiently forecast the curing-induced deformation evolution of composite structures. Herein, an integrated convolutional neural network (CNN) and long short-term memory (LSTM) network approach was developed to capture both the space-distributed and time-resolved deformation. The FE method combined with the bridging model was established to simulate curing process and generate a comprehensive database containing tensors of temperature, degree of cure, initial coordinate, stress and deformation during curing. In contrast to conventional rapid prediction models that can only calculate the deformation after demolding, the primary focus in developing this strategy lies in characterizing the spatio-temporal variations of warpage. The validations of composite laminates and sandwich structures with different stacking sequences confirm the model's accuracy in predicting curing-induced deformations. The proposed framework provides a promising approach to predict curing-induced warpage evolution for optimizing the process and precisely controlling part quality.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111225"},"PeriodicalIF":8.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072123","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

Macrocycle-based host-guest interactions improving electrical energy storage capability of all-organic dielectric composites 基于大循环的主客体相互作用提高了全有机介电复合材料的储能性能

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-10 DOI: 10.1016/j.compscitech.2025.111226

Hao Zhong , Hao Tan , Liwen Deng , Hang Luo , Ru Guo , Sheng Chen

{"title":"Macrocycle-based host-guest interactions improving electrical energy storage capability of all-organic dielectric composites","authors":"Hao Zhong , Hao Tan , Liwen Deng , Hang Luo , Ru Guo , Sheng Chen","doi":"10.1016/j.compscitech.2025.111226","DOIUrl":"10.1016/j.compscitech.2025.111226","url":null,"abstract":"<div><div>Polymer films capacitors are widely used in the electrical and electronic fields, and much effort has been devoted to exploiting the high temperature resistant polymer dielectrics with superior discharged energy density (<em>U</em><sub><em>d</em></sub>) and efficiency (<em>η</em>) in harsh environments. The addition of organic molecular fillers is good way to improve the energy storage properties of dielectric polymers. In this work, for the first time, the host organic filler (methyl β-cyclodextrin, M-β-CD) is embedded into the guested polynorbornene dielectrics containing amantadine side-chain (PATMD). All-organic polymeric dielectric composites (M-β-CD/PATMD) is obtained based on the host-guest interaction between PATMD matrix and M-β-CD filler. The experiment results showed that the introduction of host filler can obviously enhance the <em>U</em><sub><em>d</em></sub> and <em>η</em> at high temperature and high field because inclusion complex can simultaneously increase thermal performance and trap depth. The maximum <em>U</em><sub><em>d</em></sub> of 0.1 wt% M-β-CD/PATMD is 7.4 J/cm<sup>2</sup>, maintaining the <em>η</em> of above 90 %. Importantly, at 150 °C and 200 °C, the largest <em>U</em><sub><em>d</em></sub> of 4.3 J/cm<sup>2</sup> and 3.6 J/cm<sup>2</sup> is achieved respectively, and the corresponding <em>η</em> is 80 % and 74 %, which is both much higher than that of pure PATMD. This work proves that the cyclodextrin-based host-guest design method is a good effective strategy for the preparation of high performance polymer dielectrics.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111226"},"PeriodicalIF":8.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937051","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

Direct numerical simulation of fiber orientation kinetics and rheology of fiber-filled polymers in shear flow 剪切流动中纤维取向动力学和纤维填充聚合物流变学的直接数值模拟

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-10 DOI: 10.1016/j.compscitech.2025.111197

Thijs R.N. Egelmeers , Ruth Cardinaels , Patrick D. Anderson , Nick O. Jaensson

{"title":"Direct numerical simulation of fiber orientation kinetics and rheology of fiber-filled polymers in shear flow","authors":"Thijs R.N. Egelmeers , Ruth Cardinaels , Patrick D. Anderson , Nick O. Jaensson","doi":"10.1016/j.compscitech.2025.111197","DOIUrl":"10.1016/j.compscitech.2025.111197","url":null,"abstract":"<div><div>This study investigates fiber orientation kinetics and the corresponding rheology in fiber composites via direct numerical simulations in shear flow on triperiodic representative volume elements. The resulting orientation kinetics are compared to those predicted by the Folgar–Tucker model to explain the underlying mechanisms of its phenomenological parameters. Two effects are investigated in detail: (1) tangential slip on the surface of the fibers and (2) viscoelasticity of the matrix fluid. The orientation kinetics for different slip lengths are well described by the Jeffery’s equation with different effective particle aspect ratios. The orientation kinetics slow down with increasing fluid elasticity and are well described with a strain reduction factor in the Folgar–Tucker model. For these viscoelastic simulations, at high volume fractions, the rheological parameters are underpredicted by a modified Hinch and Leal model. Furthermore, distinct Folgar–Tucker parameters are required to either optimally describe the rheology or the orientation kinetics of the simulations.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111197"},"PeriodicalIF":8.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950428","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

Surface differentiation: An innovative sizing strategy to enhance the interfacial adhesion between CF and PA6 表面分化：一种创新的施胶策略，以增强CF和PA6之间的界面附着力

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-08 DOI: 10.1016/j.compscitech.2025.111223

Yining Wang, Yuxi Pan, Mingguang Zhang, Yu Deng, Zhimin Wang, Xigao Jian, Yousi Chen

{"title":"Surface differentiation: An innovative sizing strategy to enhance the interfacial adhesion between CF and PA6","authors":"Yining Wang, Yuxi Pan, Mingguang Zhang, Yu Deng, Zhimin Wang, Xigao Jian, Yousi Chen","doi":"10.1016/j.compscitech.2025.111223","DOIUrl":"10.1016/j.compscitech.2025.111223","url":null,"abstract":"<div><div>Grounded in the principle of “like dissolves like”, the development of water-soluble sizing agents characterized by matrix-like structures has emerged as a focal point of research within the interface domain. Nevertheless, the reliance exclusively on the entanglement forces between the sizing agent and the matrix is deemed inadequate. In this study, a novel water-soluble dual-component sizing agent tailored for the nylon 6 (PA6) resin matrix has been developed. By leveraging the self-emulsifying and water-soluble properties of sodium lignosulfonate (SL) and polyamic acid (PAA), these components are concurrently introduced onto the fiber surface. Following treatment, a distinct interfacial region is established on the fiber surface as a result of their interactions. Exploiting their intrinsic differences at processing temperatures facilitates differential wetting of the matrix resin on the fiber surface, consequently resulting in the formation of a “mechanical interlocking” structure between the fiber and the matrix. The findings reveal that the flexural strength and interlaminar shear strength of the modified CF/PA6 composites achieved values of 977.8 MPa and 74.1 MPa, corresponding to enhancements of 27.4 % and 28.8 %, respectively, when compared to their unmodified counterparts. This innovative sizing agent not only significantly enhances interfacial adhesion but also confers high added-value potential to lignin-derived materials, a factor that is essential for future sustainable development.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111223"},"PeriodicalIF":8.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931930","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

Simultaneous improvement of thermal stability, mechanical properties, and combustion safety in polycaprolactone via blending with a tiny amount of aramid nanofiber 通过与少量芳纶纳米纤维共混，提高聚己内酯的热稳定性、力学性能和燃烧安全性

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-02 DOI: 10.1016/j.compscitech.2025.111215

Yinzhou Guo , Wenchen Hu , Chenhui Cui , Jiaying Liu , Xiaoqing Ming , Qiang Zhang , Yilong Cheng , Zhishen Ge , Yanfeng Zhang

{"title":"Simultaneous improvement of thermal stability, mechanical properties, and combustion safety in polycaprolactone via blending with a tiny amount of aramid nanofiber","authors":"Yinzhou Guo , Wenchen Hu , Chenhui Cui , Jiaying Liu , Xiaoqing Ming , Qiang Zhang , Yilong Cheng , Zhishen Ge , Yanfeng Zhang","doi":"10.1016/j.compscitech.2025.111215","DOIUrl":"10.1016/j.compscitech.2025.111215","url":null,"abstract":"<div><div>Thermoplastic polyesters, polycaprolactone (PCL), are widely used in engineering and biomedical fields due to their flexibility, biodegradability, and processability. However, PCL's poor mechanical strength and thermal stability (e.g. high-temperature deformation, melt dripping) limit its applications. To address these limitations, this work develops novel aramid nanofiber (ANF)-reinforced PCL composites. By incorporating a tiny amount (2 wt%) of ANF into the PCL matrix via a banburying process, the mechanical properties and thermal stability of the composites are significantly improved. Compared with pure PCL, the tensile strength and toughness of the composites reach 35.6 MPa and 236 MJ/m<sup>3</sup>, respectively, significantly exceeding pure PCL of 21.3 MPa and 160 MJ/m<sup>3</sup>. Furthermore, the composite exhibits excellent shape stability and maintains its original shape even at 100 °C. More importantly, under combustion conditions, the composite completely avoids burning dripping observed in pure PCL, greatly improving its combustion safety. In addition, the composites still maintain the same excellent biocompatibility as PCL. Therefore, PCL@ANF composites show outstanding strength, toughness, thermal stability, providing huge potentials as high-performance biomedical engineering materials for fracture fixation applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111215"},"PeriodicalIF":8.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912076","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

Enhancement of numerical model of low-velocity impact response of fibre metal laminates by adaptation of non-homogenous cohesive zone model and microstructural anisotropy of metal layers 采用非均匀黏聚带模型和金属层微观结构各向异性对金属纤维层合板低速冲击响应数值模型的改进

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-29 DOI: 10.1016/j.compscitech.2025.111212

Patryk Jakubczak, Piotr Podolak, Katarzyna Biruk-Urban, Jarosław Bieniaś

{"title":"Enhancement of numerical model of low-velocity impact response of fibre metal laminates by adaptation of non-homogenous cohesive zone model and microstructural anisotropy of metal layers","authors":"Patryk Jakubczak, Piotr Podolak, Katarzyna Biruk-Urban, Jarosław Bieniaś","doi":"10.1016/j.compscitech.2025.111212","DOIUrl":"10.1016/j.compscitech.2025.111212","url":null,"abstract":"<div><div>This study enhances the numerical modelling of low-velocity impact (LVI) in fibre metal laminates (FMLs) by incorporating a non-homogeneous cohesive zone model (CZM) and accounting for the microstructural anisotropy of metal layers. Traditional CZM implementations often assume uniform crack energy values along fibre orientation, disregarding variations in delamination propagation paths and anisotropic properties of rolled metal sheets. To address these limitations, this research introduces an anisotropic CZM (ACZM) and an anisotropic metal layer model (AML) to improve damage prediction fidelity. The proposed approach is validated through four compared finite element analyses (FEA) of CARALL laminates subjected to LVI (conventional, and modified in terms of non-homogenous micro-mechanical properties of FML components), also comparing numerical predictions with experimental drop-weight impact tests. Results demonstrate that ACZM stabilizes force-time responses and enhances the accuracy of delamination pattern, while AML improves impact resistance predictions, though it slightly reduces laminate stiffness. A combined ACZM-AML model exhibits the lowest prediction error (nearly five percent) while maintaining computational efficiency. The study confirms that accounting for interfacial variability and metal layer anisotropy significantly refines LVI simulations, providing more accurate insights into delamination initiation and propagation in FMLs.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111212"},"PeriodicalIF":8.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900168","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

Linking microscopic network structure to macroscopic rheological properties in polydimethylsiloxane composite fluids 聚二甲基硅氧烷复合流体微观网络结构与宏观流变性能的联系

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-28 DOI: 10.1016/j.compscitech.2025.111193

Siyuan Cheng , Yimin Wei , Gaohong Lv , Xiangchao Xie , Jiahui Wang , Shujun Cai , Yabiao Ma , Jian-Bin Xu , Xiaoliang Zeng , Rong Sun

{"title":"Linking microscopic network structure to macroscopic rheological properties in polydimethylsiloxane composite fluids","authors":"Siyuan Cheng , Yimin Wei , Gaohong Lv , Xiangchao Xie , Jiahui Wang , Shujun Cai , Yabiao Ma , Jian-Bin Xu , Xiaoliang Zeng , Rong Sun","doi":"10.1016/j.compscitech.2025.111193","DOIUrl":"10.1016/j.compscitech.2025.111193","url":null,"abstract":"<div><div>Polydimethylsiloxane-based composite fluids are extensively utilized as thermal interface materials for heat dissipation of chips, due to their high thermal conductivity and distinctive rheological behaviors. However, establishing direct correlations between macroscopic rheological properties and microscopic structures has proven challenging. Here, using micron sized platelet boron nitride (BN) and spherical aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) as model fillers, we elucidate the relationship between the microscopic network structure and the macroscopic rheological properties of polydimethylsiloxane (PDMS) based composite fluids by analyzing the particle networks in conjunction with scaling theory. We find that the rheology properties of the Al<sub>2</sub>O<sub>3</sub>/PDMS composite fluids are different from those of the BN/PDMS composite fluids, where the Al<sub>2</sub>O<sub>3</sub>/PDMS composite fluids increase hyper exponentially with filling volume fraction, but the BN/PDMS composite fluids increases exponentially. The thixotropic properties reveal that the spherical Al<sub>2</sub>O<sub>3</sub> particles have high recovery rate, but the platelet BN contributes to a low recovery rate. The difference in rheological performance between BN and Al<sub>2</sub>O<sub>3</sub> stems from the interparticle forces and particle networks: BN particles surprisingly form colloidal-style clusters and particle networks, whereas Al<sub>2</sub>O<sub>3</sub> particles create a volume-repulsion-dominated jamming structure. Using these two composite fluids as thermal interface materials, we demonstrate that the BN/PDMS composite fluids capable with better dispensing operation performance and better ability of heat dissipation for chip than the Al<sub>2</sub>O<sub>3</sub>/PDMS composite fluids.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"267 ","pages":"Article 111193"},"PeriodicalIF":8.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892164","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

Ultralight, flexible, and breathable Bi-modified W18O49/MWCNTs/PAN hybrid nanofiber membrane for NIR/VIS/UV/X-ray broadband electromagnetic shielding 用于近红外/可见/紫外/ x射线宽带电磁屏蔽的bi改性W18O49/MWCNTs/PAN杂化纳米纤维膜

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-28 DOI: 10.1016/j.compscitech.2025.111211

Xin Qu , Ce Wang , Yuanyu Zhao , Jinqiu Ye , Ping Hu , Rui Zhao , Yong Liu

{"title":"Ultralight, flexible, and breathable Bi-modified W18O49/MWCNTs/PAN hybrid nanofiber membrane for NIR/VIS/UV/X-ray broadband electromagnetic shielding","authors":"Xin Qu , Ce Wang , Yuanyu Zhao , Jinqiu Ye , Ping Hu , Rui Zhao , Yong Liu","doi":"10.1016/j.compscitech.2025.111211","DOIUrl":"10.1016/j.compscitech.2025.111211","url":null,"abstract":"<div><div>Human activities, ranging from medical applications to space exploration, face significant threats from multiband electromagnetic radiation. This challenge is particularly pronounced in the complex radiation environments of space. There is an urgent need for high-efficiency, stable broadband electromagnetic shielding materials to safeguard human health and equipment safety. Herein, a Bi-modified W<sub>18</sub>O<sub>49</sub>/MWCNTs/PAN hybrid nanofiber membrane is successfully prepared by electrospinning and post-treatment. Relying on the synergistic effect of Bi, W<sub>18</sub>O<sub>49</sub>, MWCNTs, and porous structures, excellent broadband radiation protection capability is achieved: (i) Low near-infrared-visible-light (NIR-VIS) transmittance (0.62 %); (ii) Ultraviolet (UV) transmittance of only 0.012 % and UPF value as high as 2000; (iii) Mass attenuation coefficient up to 16.18 cm<sup>2</sup> g<sup>−1</sup> and attenuation ratio of 85.74 % (thickness: 4 mm) at 33 keV X-ray energy. Furthermore, porous structure and high specific surface area give the membrane ultralight density (0.36 g cm<sup>−3</sup>), flexibility, and outstanding air permeability (8.5 kg m<sup>−2</sup> d<sup>−1</sup>). Even after 2000 bends, it still maintains stable structure and performance. Meanwhile, low thermal conductivity (42.2 mW m<sup>−1</sup> K<sup>−1</sup>) and superior temperature resistance (300 °C) enable it to adapt to complex and changing environments. These advantages make the membrane highly promising for radiation protection in medical, industrial, and aerospace applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"267 ","pages":"Article 111211"},"PeriodicalIF":8.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882992","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

Self-healing of polyamide 6/cyclic olefin copolymer/carbon fiber composites under quasi-static, impact, and fatigue conditions 聚酰胺6/环烯烃共聚物/碳纤维复合材料在准静态、冲击和疲劳条件下的自修复

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-28 DOI: 10.1016/j.compscitech.2025.111213

M. Coser , D. Perin , G. Fredi , L. Aliotta , V. Gigante , A. Lazzeri , A. Dorigato , A. Pegoretti

{"title":"Self-healing of polyamide 6/cyclic olefin copolymer/carbon fiber composites under quasi-static, impact, and fatigue conditions","authors":"M. Coser , D. Perin , G. Fredi , L. Aliotta , V. Gigante , A. Lazzeri , A. Dorigato , A. Pegoretti","doi":"10.1016/j.compscitech.2025.111213","DOIUrl":"10.1016/j.compscitech.2025.111213","url":null,"abstract":"<div><div>This study investigates the self-healing capabilities of polyamide 6 (PA6) composites containing a cyclic olefin copolymer (COC) as a healing agent and a discontinuous carbon fiber (CF) reinforcement under quasi-static, impact, and fatigue loading conditions. To this aim, PA6/COC (30 wt%)/CF (20 wt%) composites were prepared via melt-compounding and injection molding. The microstructure, mechanical properties, and self-healing behavior of the composites with COC were compared with those of the reference PA6/CF (20 wt%). Although the addition of COC slightly reduces the quasi-static mechanical properties, it significantly improves the impact resistance. The presence of COC domains allow healing efficiencies (HE) of up to 80 % in impact tests, whereas lower HE values are found in quasi-static fracture tests owing to matrix plasticization hindering the COC flow in the fracture zone. Notably, fatigue testing reveals the ability of PA6/COC/CF composites to repair microdamage during thermal mending, extending their own fatigue life by 77 %, while virgin samples are not able to heal. These results highlight the potential of intrinsic self-healing thermoplastic composites to extend the service life of structural composites, particularly under cyclic loading conditions.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111213"},"PeriodicalIF":8.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928511","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