Composites Communications最新文献_第5页

3D woven ramie fiber-reinforced composites exhibiting enhanced impact and compression resistance under hygrothermal aging 三维编织苎麻纤维增强复合材料在湿热老化下表现出增强的抗冲击和抗压缩性能

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-02-01 Epub Date: 2026-01-16 DOI: 10.1016/j.coco.2026.102722

Shuo Han , Ming Cai , Qihua Ma , Geoffrey I.N. Waterhouse , Baozhong Sun , Bin Yang

This study systematically investigates the hygrothermal aging behavior and the resulting structural mechanical degradation of three-dimensional woven ramie fiber-reinforced epoxy composites (3D-RFRC) under long-term moisture exposure. Accelerated aging was conducted at 20 °C, 40 °C, and 60 °C for up to 12 weeks to evaluate the coupled effects of temperature and exposure duration quantitatively. Moisture uptake measurements indicate that the hydrophilic ramie fibers dominate water adsorption in 3D-RFRC, reaching a maximum moisture content of 4.814 % at 60 °C, which progressively weakens the fiber-matrix interface. Quasi-static compression tests reveal a monotonic reduction in compressive yield stress with aging time, and parametric analysis demonstrates that hygrothermal exposure severity plays a more critical role in structural degradation than aging temperature alone. Both low-velocity and high-velocity impact tests show a systematic decline in peak load and energy absorption capacity with increasing aging severity, indicating a temperature-accelerated loss of impact resistance. By integrating experimental results with finite element analysis, this work identifies a distinct shift in load transfer mechanisms from a matrix-supported distributed stress state to localized interface-dominated stress concentrations. This transition leads to intensified elastic-plastic deformation of the woven architecture, interfacial debonding, fiber yielding, and micro-buckling, which govern the macroscopic degradation of structureal performance. The results provide new insights into the long-term durability and damage evolution of natural fiber-based 3D woven composite structures operating in moisture-rich environments.

本研究系统地研究了三维编织苎麻纤维增强环氧复合材料（3D-RFRC）在长期受潮条件下的湿热老化行为及其结构力学退化。分别在20°C、40°C和60°C下加速老化12周，定量评价温度和暴露时间的耦合效应。吸湿性测试表明，亲水性苎麻纤维在3D-RFRC中占主导地位，在60℃时达到最大含水率4.814%，纤维-基质界面逐渐减弱。准静态压缩试验表明，压缩屈服应力随老化时间呈单调降低趋势，参数分析表明，与老化温度相比，湿热暴露程度对结构退化的影响更为关键。低速和高速冲击试验均表明，随着老化严重程度的增加，峰值载荷和能量吸收能力有系统地下降，表明温度加速了抗冲击性的丧失。通过将实验结果与有限元分析相结合，这项工作确定了载荷传递机制从基质支持的分布式应力状态到局部界面主导的应力集中的明显转变。这种转变导致编织结构的弹塑性变形加剧，界面脱粘，纤维屈服和微屈曲，这些都是结构性能宏观退化的主要原因。研究结果为研究富湿环境下基于天然纤维的三维编织复合材料结构的长期耐久性和损伤演变提供了新的见解。

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引用次数: 0

A nature-inspired interfacial design strategy of carbon fiber composites by constructing ‘rigid-flexible’ ANFs/PDA nanostructures 基于“刚柔”ANFs/PDA纳米结构的碳纤维复合材料界面设计策略

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-02-01 Epub Date: 2026-01-14 DOI: 10.1016/j.coco.2026.102721

Xiaomin Yuan , Yueyi Zhang , Rongman Qin , Jingyu Ma , Bo Zhu , Shengnan Li , Weiwei Cao

The development of carbon fiber reinforced thermoplastic composites (CFRTP) is restricted by the problems of poor interfacial adhesion. Inspired by the steel-mortar structure, this study designs a multiscale ‘rigid-flexible’ interfacial structure, which synergistically composed of rigid ‘steel’ formed by network-like aramid nanofibers (ANFs) and flexible ‘mortar’ formed by highly adhesive polydopamine (PDA). ANFs possess high strength and modulus, which serve as rigid structural buffer layer. PDA with catechol groups can strengthen interfacial chemical coupling through hydrogen bonding and π-π conjugation interactions, which work as a flexible energy-dissipating layer. Furthermore, magnetic field-assisted electrophoretic deposition (EPD) technique is innovatively introduced, combined with ultrasonic impregnation process, to achieve directional and precise regulation and optimization of interface properties. By utilizing the magnetic field to directionally control the orientation and arrangement of the ANF/PDA nanophase on the CF surface, and cooperating with the ultrasonic impregnation process to optimize the dispersibility of the nanophase, this approach effectively addresses the issues of easy agglomeration and uneven distribution of nanophases in traditional deposition processes, enhancing the dual anchoring effects of interfacial physics and chemistry. Experimental results indicate that, compared with the virgin CF/Polypropylene(PP) composites, the synergistic effect of ANFs and PDA increases the interlaminar shear strength of CF/PP composites to 38.97 MPa, representing a remarkable 40.58 % increase. Meanwhile, nano-indentation and dynamic thermomechanical analysis both indicate that, the elastic modulus, stiffness, and storage modulus are also synchronously improved. This work confirms the beneficial effect of ‘rigid-flexible’ interfacial strategy based on ANFs-PDA on enhancing comprehensive performances of CF/PP composites.

碳纤维增强热塑性复合材料（CFRTP）界面粘结力差的问题制约了其发展。受钢-砂浆结构的启发，本研究设计了一种多尺度的“刚柔”界面结构，该结构由网状芳纶纳米纤维（ANFs）形成的刚性“钢”和由高粘性聚多巴胺（PDA）形成的柔性“砂浆”协同组成。ANFs具有较高的强度和模量，可作为刚性结构缓冲层。含有儿茶酚基团的PDA可以通过氢键和π-π共轭相互作用增强界面化学偶联，形成柔性耗能层。创新性地引入了磁场辅助电泳沉积（EPD）技术，结合超声浸渍工艺，实现了界面性能的定向、精确调控和优化。该方法利用磁场定向控制ANF/PDA纳米相在CF表面的取向和排列，配合超声浸渍工艺优化纳米相的分散性，有效解决了传统沉积工艺中纳米相容易团聚和分布不均匀的问题，增强了界面物理和化学的双重锚定作用。实验结果表明，与原始的CF/PP（聚丙烯）复合材料相比，ANFs和PDA的协同作用使CF/PP复合材料的层间剪切强度达到38.97 MPa，显著提高了40.58%。同时，纳米压痕和动态热力学分析都表明，弹性模量、刚度和存储模量也同步提高。这项工作证实了基于ANFs-PDA的“刚柔”界面策略对提高CF/PP复合材料综合性能的有益作用。

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引用次数: 0

Additive manufacturing of electrostatic chucks with tunable ceramic-polymer dielectrics: A combined experimental and FEA approach 可调谐陶瓷-聚合物介质静电卡盘的增材制造：实验与有限元相结合的方法

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-02-01 Epub Date: 2026-01-16 DOI: 10.1016/j.coco.2026.102727

Munseong Kim , Jongwoo Lim , Jae-Hyuk Park , Sukeun Yoon , Jihoon Kim

This study presents a ceramic Digital Light Processing (DLP) 3D-printing strategy for fabricating electrostatic chucks (ESCs) with tunable dielectric properties and electrode designs. A custom-formulated photocurable resin was developed and optimized to achieve high cure depth and suitable rheological properties. Barium titanate (BaTiO₃; BTO) was incorporated into the resin to enhance its dielectric permittivity while maintaining printability. The dielectric permittivity and breakdown voltage of the DLP-printed composite structures were systematically evaluated as functions of the BTO content. Finite Element Analysis (FEA) and experimental measurements confirmed that increasing BTO content improved relative permittivity but reduced dielectric strength. To balance these trade-offs, a dual-material strategy was adopted: the ESC body was printed with 5 vol% BTO to achieve high breakdown strength, while the dielectric layer was printed with a higher BTO content to increase chucking force. Simulations further revealed that electric fields were localized around interdigital electrode (IDE) edges, resulting in a limited polarization distribution. To address this issue, various IDE patterns with increased finger densities were implemented. These modifications significantly enhanced chucking force, as validated by both simulations and experiments. Overall, this study demonstrates that combining material formulation, ceramic DLP printing, and simulation-guided design enables rapid optimization of ESC performance, offering a flexible platform for advanced electrostatic device manufacturing.

本研究提出了一种陶瓷数字光处理（DLP） 3d打印策略，用于制造具有可调谐介电性能和电极设计的静电卡盘（esc）。开发并优化了一种定制配方的光固化树脂，以获得高固化深度和合适的流变性能。在树脂中加入钛酸钡（BaTiO3； BTO）以提高其介电常数，同时保持印刷性。系统地评价了dlp打印复合结构的介电常数和击穿电压随BTO含量的变化。有限元分析（FEA）和实验测量证实，增加BTO含量可提高相对介电常数，但降低介电强度。为了平衡这些权衡，采用了双材料策略：ESC主体用5 vol%的BTO印刷以获得高击穿强度，而介电层用更高的BTO含量印刷以增加夹紧力。模拟进一步表明，电场集中在指间电极（IDE）边缘附近，导致极化分布受限。为了解决这个问题，实现了各种增加手指密度的IDE模式。通过仿真和实验验证，这些改进显著提高了夹紧力。总体而言，本研究表明，结合材料配方、陶瓷DLP打印和仿真指导设计，可以快速优化ESC性能，为先进静电器件制造提供灵活的平台。

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引用次数: 0

RVE-based mesoscale damage modeling of 3D5D braided composites under four-point bending loading 基于rve的四点弯曲载荷下3D5D编织复合材料细观损伤建模

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-01-01 Epub Date: 2025-12-02 DOI: 10.1016/j.coco.2025.102666

Kai Qiao , Xiwu Xu , Lufang Qin , Xiangju Qu , Jiaxiang Man , Chao Zhang

This study presents a representative volume element (RVE) based modeling approach to analyze the bending response and mesoscale damage evolution of 3D five-directional (3D5D) braided composites. These composites, recognized for their exceptional delamination resistance and impact toughness, are widely utilized in critical aerospace applications. In the proposed approach, the actual bending specimen is idealized as a homogeneous plate composed of periodically arranged RVEs, each subjected to a uniform bending moment. A shell-based periodic boundary condition (PBC) is developed, enabling simulation of the entire specimen using a single RVE with high efficiency and accuracy. A continuum damage model is integrated within the framework to capture the internal damage mechanisms and mesoscale fracture patterns. Experimental validation conducted across various braiding angles demonstrates strong agreement between the simulated and measured curvature-moment response, as well as matching full-strain fields with DIC data. The proposed model effectively captures both macroscopic bending response and the evolution of internal damage, providing valuable insights into the structural performance of braided composites under bending loads.

提出了一种基于代表性体积元（RVE）的三维五向编织复合材料弯曲响应及细观损伤演化分析方法。这些复合材料以其卓越的抗分层性和冲击韧性而闻名，广泛应用于关键的航空航天应用。在提出的方法中，实际的弯曲试件被理想化为由周期性排列的rve组成的均匀板，每个rve都受到均匀的弯矩。提出了一种基于壳的周期边界条件（PBC），实现了利用单个RVE对整个试件进行高效、准确的模拟。在框架内集成了连续损伤模型，以捕获内部损伤机制和中尺度断裂模式。在不同编织角度下进行的实验验证表明，模拟和测量的弯矩响应之间具有很强的一致性，并且全应变场与DIC数据相匹配。所提出的模型有效地捕捉了宏观弯曲响应和内部损伤的演变，为弯曲载荷下编织复合材料的结构性能提供了有价值的见解。

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引用次数: 0

Effect of polyether sulfone on mechanical properties of epoxy resin in wide service -environment temperature range 聚醚砜对环氧树脂大使用环境温度范围内力学性能的影响

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-01-01 Epub Date: 2026-01-05 DOI: 10.1016/j.coco.2026.102706

Yeqing Liu , Lin Zhang , Zhongbao Wang , Ying Zhang , Haiyang Gu , Ruoxi Fan , Jia Yan , Jialiang Li , Duo Chen , Shichao Li , Zhanjun Wu

With the rapid development of recoverable spacecraft and deep-space exploration technologies, new requirements have been proposed for EPs (Epoxy resins) to serve across a broader temperature spectrum. In this study, we prepared a polyethersulfone (PES) toughened EP system and systematically investigated its performance limits over a wide temperature range, as well as the potential mechanism of PES toughening. At −183 °C, the tensile strength and elongation at break of the PES-toughened EP system reached 133.9 ± 10.4 MPa and 1.65 ± 0.06 %, respectively; the impact toughness is 25.7 ± 1.8 kJ/m², and the bending strength is 235.5 ± 12.6 MPa. At 150 °C, its tensile strength and tensile modulus were 67.2 ± 3.4 MPa and 2.36 ± 0.13 GPa, respectively; the impact toughness is 32.7 ± 6.2 kJ/m², and the bending strength is 106.7 ± 1.0 MPa. The research results show that PES has different toughening and strengthening mechanisms for EP matrix in low-temperature and high-temperature environments. At low temperatures, compared with pure EP, PES, as the "soft phase", toughens the "hard phase" EP matrix, endowing the hybrid material with the characteristics of "low modulus and high strength and toughness". On the contrary, at high temperatures, PES acts as the "hard phase" to reinforce the "soft phase" EP matrix, enabling the hybrid material to "combine high modulus with high strength and toughness". This research is expected to provide new insights into the practical application of EP-based composites with a wide temperature range in the fuel tanks of recoverable spacecraft and the construction of lunar bases.

随着返回式航天器和深空探测技术的快速发展，对环氧树脂（EPs）的工作温度谱提出了新的要求。在本研究中，我们制备了聚醚砜（PES）增韧EP体系，并系统地研究了其在宽温度范围内的性能极限，以及PES增韧的潜在机理。在−183℃时，pes增韧EP体系的抗拉强度和断裂伸长率分别达到133.9±10.4 MPa和1.65±0.06%；冲击韧性25.7±1.8 kJ/m2，抗弯强度235.5±12.6 MPa。在150℃时，其拉伸强度和拉伸模量分别为67.2±3.4 MPa和2.36±0.13 GPa；冲击韧性为32.7±6.2 kJ/m2，抗弯强度为106.7±1.0 MPa。研究结果表明，PES在低温和高温环境下对EP基体具有不同的增韧强化机制。在低温下，与纯EP相比，PES作为“软相”使“硬相”EP基体增韧，使杂化材料具有“低模量、高强韧”的特点。相反，在高温下，PES作为“硬相”增强“软相”EP基体，使杂化材料“高模量与高强韧相结合”。该研究有望为宽温度范围ep基复合材料在返回式航天器燃料箱和月球基地建设中的实际应用提供新的见解。

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引用次数: 0

Microcellular poly(phenylene sulfide)/carbon fiber composite foams prepared by melt-quenching foaming method 熔融猝灭发泡法制备微孔聚苯硫醚/碳纤维复合泡沫

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-01-01 Epub Date: 2025-12-27 DOI: 10.1016/j.coco.2025.102693

Chang Han, Junji Hou, Xiaoli Zhang, Chuntai Liu, Jingbo Chen

High-performance polymer foams are becoming essentials in industries such as automotive and aerospace. Herein, poly(phenylene sulfide)/carbon fiber (PPS/CF) composite foams with high compressive properties were prepared by a melt-quenching foaming method. As the CF content increased from 0 to 30 wt%, the crystallinity of PPS changed from 48.2 % to 72.4 %. Compared with neat PPS, the tensile strength of the composites with 30 wt% CF increased from 63.3 MPa to 112.8 MPa and impact strength increased from 14.5 kJ/m² to 25.4 kJ/m². The composites also exhibited an enhanced viscoelasticity, which was conducive to foaming. By adjusting the foaming temperature, pressure, and CF content, foams with expansion ratio of 1.2–6.4-fold were prepared. Owing to the heterogeneous nucleation of CF, the cell density was increased and cell size was significantly reduced. The compression tests showed that the compressive strength of composite foams with 30 wt% CF was up to 2.7 MPa. After annealing, the compressive strength of foam with 20 wt% CF was further increased by 138.5 % owing to the enhanced crystallinity. The prepared PPS/CF composite foams exhibit good application prospects in the lightweighting of automotive and aerospace fields.

高性能聚合物泡沫正在成为汽车和航空航天等行业的必需品。采用熔淬发泡法制备了具有高抗压性能的聚苯硫醚/碳纤维（PPS/CF）复合泡沫。当CF含量从0 wt%增加到30 wt%时，PPS的结晶度从48.2%增加到72.4%。与纯PPS相比，添加30 wt% CF的复合材料抗拉强度从63.3 MPa提高到112.8 MPa，冲击强度从14.5 kJ/m2提高到25.4 kJ/m2。复合材料的粘弹性增强，有利于发泡。通过调节发泡温度、压力和CF含量，可制得膨胀比为1.2 ~ 6.4倍的泡沫。由于CF的非均匀成核，细胞密度增加，细胞大小明显减小。压缩试验表明，含CF量为30%的复合泡沫的抗压强度可达2.7 MPa。当CF含量为20 wt%时，由于结晶度的提高，泡沫的抗压强度进一步提高了138.5%。制备的PPS/CF复合泡沫材料在汽车轻量化和航空航天领域具有良好的应用前景。

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引用次数: 0

Additive manufacturing of continuous carbon fiber-reinforced C/C composites with synergistic shrinkage suppression and multifunctional integration 增材制造协同减缩多功能一体化连续碳纤维增强C/C复合材料

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-01-01 Epub Date: 2025-12-18 DOI: 10.1016/j.coco.2025.102688

Wanpeng Dong , Haiyan Chen , Jiangman Sun , Min Zhao , Yue Xing , Xuejun Zhang , Lin Li , Fengchun Jiang , Xiubing Liang

Additive manufacturing (AM) of carbon/carbon (C/C) composites struggles with the dimensional fidelity, mechanical robustness, and functional integration due to their severe pyrolysis shrinkage and discontinuous reinforcement. Herein, a strategy integrating continuous carbon fiber (CCF) structural reinforcement with sulfonation-carbonization regulation is proposed for manufacturing functional C/C composites via AM. Using the dual-filament co-extrusion AM, the polypropylene (PP) precursors incorporating axially aligned CCFs are fabricated. Subsequently, the sulfonation-induced crosslinking and carbonization are applied to unidirectional, 31 vol% CCF reinforced PP precursor, achieving a C/C composite with a volumetric shrinkage below 1 % and a carbon yield of 77 %, ensuring the low linear dimensional errors in complex geome83tries, which is mainly attributed to the constraining of the 3D continuous fiber skeleton in precursors. The resulted CCF-reinforced C/C composites (e.g., PP-31 %CCF) exhibit significantly enhanced mechanical properties including a tensile strength of 54.4 MPa surpassing short carbon fiber (SCF) reinforced versions by 68 times, alongside the flexural strength of 56.6 MPa, and the interlaminar shear strength (ILSS) of 5.1 MPa. Simultaneously, the PP-31 %CCF leverages its continuous conductive network to achieve an ultralow electrical resistance at 2 Ω, and superior electrothermal efficiency with a low comprehensive heat transfer coefficient (H_r + c) of 0.036 W ^oC-1, demonstrating its capabilities of Joule heating and real-time damage monitoring through a strain-dependent resistance response under compression. Thus, the CCF-reinforced C/C composites with the integration of high mechanical strength and electrical functionalities highlights the significant potential for aerospace load-bearing components and intelligent thermal management systems.

碳/碳（C/C）复合材料的增材制造（AM）由于其严重的热解收缩和不连续强化，在尺寸保真度、机械稳健性和功能集成方面存在困难。本文提出了一种将连续碳纤维（CCF）结构增强与磺化-碳化调节相结合的策略，用于增材制造功能性C/C复合材料。采用双长丝共挤增材制造了含有轴向CCFs的聚丙烯前驱体。随后，将磺化诱导的交联和碳化应用于单向、31%体积的CCF增强PP前驱体中，获得了体积收缩率低于1%、碳收率为77%的C/C复合材料，确保了复杂几何形状下的低线性尺寸误差，这主要归功于前驱体中三维连续纤维骨架的约束。所得到的CCF增强C/C复合材料（例如pp - 31% CCF）表现出显著增强的机械性能，包括抗拉强度为54.4 MPa，比短碳纤维（SCF）增强的版本高出68倍，以及56.6 MPa的弯曲强度和5.1 MPa的层间剪切强度（ILSS）。同时，pp - 31% CCF利用其连续的导电网络实现了2 Ω的超低电阻，以及0.036 W oC-1的低综合传热系数（Hr + c）的卓越电热效率，证明了其焦耳加热和实时损伤监测的能力，通过压缩下的应变依赖电阻响应。因此，具有高机械强度和电气功能的ccf增强C/C复合材料突出了航空航天承重部件和智能热管理系统的巨大潜力。

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引用次数: 0

Fabrication of highly thermal conductivity silver-coated carbon fiber/carbon/epoxy composites via CVD carbon deposition and electrochemical silver deposition method CVD积碳和电化学积银制备高导热镀银碳纤维/碳/环氧复合材料

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-01-01 Epub Date: 2026-01-07 DOI: 10.1016/j.coco.2026.102710

Ying Wang , Chaoqun Ren , Shuai Cao , Tao Jiang , Jin Chen , Lixue Xiang , Bo Tang , Shanshan Shi , Yifan Li , Wei Yu , Donghai Lin , Yonghou Xiao , Wenge Li , Jinhong Yu , Xinfeng Wu

The heat dissipation problem of electronic components restricts the development of electronic information industries such as mobile phones and 5G. Constructing a carbon fiber network skeleton with a three-dimensional network structure can effectively improve the thermal conductivity of polymer materials, providing a possible path to solve the heat dissipation problem of electronic components. This paper fabricated a three-dimensional silver coated carbon fiber/carbon skeleton (Ag@CFC) using the carbon fiber felt vapor deposition carbon - electrochemical deposition silver method. And Ag@CFC/Epoxy composite was prepared by vacuum liquid-phase impregnation method. The research results indicate that the thermal conductivity of Ag@CFC/Epoxy composites increases with the increasing deposited silver content. The thermal conductivity of Ag@CFC/Epoxy composite (Ag@CFC-240 is as high as 6.52 W/(mK) (11.11 vol% CFC+6.26 vol% Ag, deposition time is 240 min), which is about 3432 % of the thermal conductivity of the epoxy resin (0.19 W/(mK)). Depositing silver, carbon fibers, and bonding carbon together form an interconnected Ag@CFC material with three-dimensional skeleton structure. The increase of deposited silver can broaden the heat conduction path of the three-dimensional Ag@CFC skeleton. Meanwhile, Ag@CFC/Epoxy composites have good thermal management performance, and the COMSOL simulation results are consistent with the actual thermal conductivity data. The LED thermal conductivity verification results show that the Ag@CFC/Epoxy composite has good practical thermal conductivity. The construction of Ag@CFC three-dimensional skeleton can provide some suggestions for the preparation and application of high thermal conductivity polymer composites.

电子元器件的散热问题制约着手机、5G等电子信息产业的发展。构建具有三维网状结构的碳纤维网络骨架，可以有效提高高分子材料的导热性，为解决电子元件的散热问题提供了可能的途径。本文采用碳纤维毡气相沉积碳-电化学沉积银的方法制备了三维镀银碳纤维/碳骨架（Ag@CFC）。采用真空液相浸渍法制备Ag@CFC/环氧复合材料。研究结果表明，随着银含量的增加，Ag@CFC/环氧复合材料的导热系数增大。Ag@CFC/环氧复合材料（Ag@CFC-240）的导热系数高达6.52 W/(mK) (11.11 vol% CFC+6.26 vol% Ag，沉积时间为240 min)，约为环氧树脂导热系数（0.19 W/(mK)）的3432%。沉积银，碳纤维，结合碳在一起形成一个相互连接Ag@CFC具有三维骨架结构的材料。银沉积量的增加可以拓宽三维Ag@CFC骨架的热传导路径。同时，Ag@CFC/环氧复合材料具有良好的热管理性能，COMSOL模拟结果与实际导热系数数据吻合较好。LED导热性能验证结果表明，Ag@CFC/环氧复合材料具有良好的实际导热性能。Ag@CFC三维骨架的构建可以为高导热聚合物复合材料的制备和应用提供一些建议。

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引用次数: 0

Enhancing interfacial thermal conductance of graphene/HEA diffusion barriers with optimized alloy composition 优化合金成分提高石墨烯/HEA扩散屏障的界面导热性

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-01-01 Epub Date: 2025-12-04 DOI: 10.1016/j.coco.2025.102671

Yinjie Shen , Kunlong Cao , Yunqing Tang , Jia Fu , Dongbo Li , Bing Yang , Yukui Cai , Zhanqiang Liu

To prevent interface diffusion and improve device heat dissipation performance, a heterogeneous thin film composed of CrMnFeCoNi high-entropy alloy (HEA) and graphene is introduced to enhance the overall heat transfer of the micro- and nano-power electronic devices. We investigate the effect of HEA single-atom concentration on heat transport at the graphene/high-entropy alloy (Gr/HEA) heterostructure interface through molecular dynamics simulations. Furthermore, the multi-component atomic concentration of HEA is coupled and optimized using orthogonal experimental mixture design with high interfacial thermal conductance (ITC) as the target. Importantly, we reveal the intrinsic mechanism of ITC changes from a phonon perspective (phonon density of states and phonon coupling coefficient), since phonons are the primary heat carriers in interfacial heat transfer. This study provides a theoretical basis for optimizing the heat transfer performance of HEA-based heterogeneous interfaces and developing efficient thermal management materials.

为了防止界面扩散和提高器件散热性能，引入了一种由CrMnFeCoNi高熵合金（HEA）和石墨烯组成的非均相薄膜，以增强微纳米电力电子器件的整体传热。通过分子动力学模拟研究了HEA单原子浓度对石墨烯/高熵合金（Gr/HEA）异质结构界面热传递的影响。以高界面导热系数（ITC）为目标，采用正交混合实验设计对HEA的多组分原子浓度进行了耦合优化。重要的是，我们从声子的角度（声子态密度和声子耦合系数）揭示了ITC变化的内在机制，因为声子是界面传热的主要热载体。该研究为优化hea基非均质界面的传热性能和开发高效热管理材料提供了理论依据。

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引用次数: 0

Liquid metal-bridged ZnO-based heterostructures for enhancing thermal conductivity of polydimethylsiloxane 液态金属桥接zno基异质结构增强聚二甲基硅氧烷导热性

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications

Pub Date : 2026-01-01 Epub Date: 2025-12-02 DOI: 10.1016/j.coco.2025.102659

Qiuchan Li , Jun Tao , Wenbin Wu , Yang Wang , Junyan Wang , Yu Jiang , Yuhang Li

With the integration and miniaturization of high-power electronic devices, developing thermal interface materials with high thermal conductivity is crucial to reducing the interfacial thermal resistance caused by fillers. Herein, a novel polymer-based thermal interface material (PDMS/ZZ@P/L) was reported, which was prepared using an in-situ growth method with ZnO/ZIF-8 heterostructure fillers. This material combined liquid metal and paraffin to fill the interface gaps and pores, forming a continuous thermally conductive network. Compared to PDMS, the thermal conductivity of the composites increased by approximately 929.4 %, and the temperature difference between PDMS/ZZ@P/L and PDMS under the same conditions reached 18.9 °C, while finite element simulations confirmed the enhanced thermal conductivity. In addition, the Young's modulus of PDMS/ZZ@P/L increased by approximately 1.7 %. More importantly, PDMS/ZZ@P/L exhibited excellent deicing performance, with the deicing time reduced by approximately 1.73 times. This work expands the research ideas for developing multifunctional thermal interface materials with practical applications.

随着大功率电子器件的集成化和小型化，开发具有高导热系数的热界面材料对于降低填料引起的界面热阻至关重要。本文以ZnO/ZIF-8异质结构为填料，采用原位生长法制备了一种新型聚合物基热界面材料（PDMS/ZZ@P/L）。这种材料结合液态金属和石蜡填充界面空隙和孔隙，形成连续的导热网络。与PDMS相比，复合材料的导热系数提高了约929.4%，在相同条件下，PDMS/ZZ@P/L与PDMS的温差达到18.9℃，有限元模拟证实了复合材料导热系数的提高。此外，PDMS/ZZ@P/L的杨氏模量增加了约1.7%。更重要的是，PDMS/ZZ@P/L具有优异的除冰性能，其除冰时间缩短了约1.73倍。为开发具有实际应用价值的多功能热界面材料拓展了研究思路。

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引用次数: 0