Composites Communications最新文献_第10页

Achieving the strength-ductility balance in dual-scale Cu-Fe hybrid reinforced aluminum matrix composites processed by ball milling and friction stir processing 通过球磨和搅拌摩擦加工实现双尺度Cu-Fe混杂增强铝基复合材料的强度-塑性平衡

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-11-01 DOI: 10.1016/j.coco.2025.102636

Chen Wang , Xianyong Zhu , Zikun Wang , Xiong Xiao , Song Yang , Jiaan Liu , Zhancheng Dou

To enhance the strength of aluminum matrix composites (AMCs) while retaining ductility, hybrid reinforcement particles comprising micro Cu and nano Fe were incorporated. A dual-phase composite was fabricated through multistep ball milling (BM) combined with multipass friction stir processing (FSP). The uniformly dispersed micro Cu/nano Fe hybrid reinforcement constructed a continuous high-strength architectural network, which facilitated dynamic recrystallization to form fine-grained regions (FG). Concurrently, the coarse Al preferentially developed coarse-grained zones (CG), thereby establishing a heterostructure that synergizes strength and ductility. The FG significantly enhanced strength via the Hall-Petch effect and Orowan strengthening mechanisms, while the CG promoted ductility by blunting crack propagation. The in situ high-strength Al₂Cu and Al₅Fe₂ further contributed to load-bearing capacity, which optimized the balance of strength and ductility. The base material used is Al 1060 (in H12 temper), with an ultimate tensile strength(UTS) of 90.6 MPa, a hardness of 30 HV_0.1, and an elongation of 15.2 %. Compared to AMCs with single-sized reinforcement, AMCs consisting 5 wt% micro Cu, 5 wt% nano Fe and 10 wt% coarse Al achieved an UTS of 222.4 MPa, a hardness of 58.2 HV_0.1, and an elongation of 19.6 %, representing respective increases of 146.3 %, 93.4 %, and 16 % over the base metal. This study highlights a strategic approach for developing heterostructure AMCs, achieving a synergistic optimization of strength and ductility.

为了提高铝基复合材料（AMCs）的强度，同时保持其延展性，采用了由微Cu和纳米Fe组成的杂化增强颗粒。采用多步球磨（BM）和多道搅拌摩擦加工（FSP）制备了双相复合材料。均匀分散的微Cu/纳米Fe杂化钢筋形成了连续的高强网状结构，有利于动态再结晶形成细晶区。同时，粗铝优先发展粗晶带（CG），从而建立了一种协同强度和延展性的异质组织。FG通过Hall-Petch效应和Orowan强化机制显著提高强度，而CG通过钝化裂纹扩展提高延性。原位高强度Al2Cu和Al5Fe2进一步提高了承载能力，优化了强度和塑性的平衡。基材为Al 1060 （H12回火），极限抗拉强度（UTS）为90.6 MPa，硬度为30 HV0.1，伸长率为15.2%。与单一尺寸增强的复合材料相比，由5 wt%微Cu、5 wt%纳米Fe和10 wt%粗Al组成的复合材料的抗压强度为222.4 MPa，硬度为58.2 HV0.1，伸长率为19.6%，分别比母材提高了146.3%、93.4%和16%。本研究强调了开发异质结构复合材料的战略途径，实现了强度和延性的协同优化。

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引用次数: 0

Influence of the dispersion method on the microstructure and underwater sound absorption of polyurethane-short carbon fibre microcomposites 分散方法对聚氨酯-短碳纤维微复合材料微观结构及吸声性能的影响

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-11-11 DOI: 10.1016/j.coco.2025.102645

Ruben Windey , Roxanne Baeten , Helge Pfeiffer , Frederik Desplentere , David Seveno

Research on novel underwater sound absorption materials for the low-frequency range (kHz) have recently gained attention, for which particulate composites comprising high-aspect-ratio fillers constitute a promising solution. However, the filler dispersion in these particulate composites is generally challenging, and the link between the resulting microstructure and acoustic performance have seldom been studied. Therefore, shear mixing and ultrasonication were compared in this study as dispersion methods for manufacturing thermoset polyurethane (PU)-1.8 wt% short carbon fibre (CF) microcomposites. Both the macroscopic and microscopic dispersion were quantitatively assessed by introducing a macroscopic and microscopic CF area fraction via photographic and optical microscopy images, respectively. Moreover, a tailor-made setup was developed here to measure the underwater sound transmission loss (STL) at low (750 Hz) and high frequency (100 kHz). Although ultrasonication was found to be more effective in uniformly dispersing and deagglomerating the CFs in the PU matrix, shear mixing resulted in an increased STL by a factor of 1.4 and 7.1 at low and high frequency, respectively, compared with ultrasonication. The larger CF clusters introduced by shear mixing presumably act as increased local ‘defects’, thereby enhancing the underwater sound attenuation. Therefore, this benchmarking study buttressed the need for a combined microstructural and functional characterisation to achieve a truly optimised filler dispersion procedure for particulate composites.

近年来，新型低频水下吸声材料的研究受到了人们的关注，其中含有高纵横比填料的颗粒复合材料是一种很有前途的解决方案。然而，填料在这些颗粒复合材料中的分散通常是具有挑战性的，并且所产生的微观结构和声学性能之间的联系很少被研究。因此，本研究比较了剪切混合和超声波分散两种制备热固性聚氨酯(PU)-1.8 wt%短碳纤维（CF）微复合材料的方法。通过引入宏观和微观CF面积分数，分别通过摄影和光学显微镜图像定量评估宏观和微观分散。此外，本文还开发了一个定制的装置来测量低频（750 Hz）和高频（100 kHz）下的水声传输损耗（STL）。虽然超声对聚氨酯基体中碳纤维的均匀分散和脱团更为有效，但剪切混合在低频和高频下的STL分别比超声提高了1.4倍和7.1倍。剪切混合引入的较大的CF团簇可能作为增加的局部“缺陷”，从而增强了水声衰减。因此，这项基准研究支持了对微观结构和功能特征相结合的需求，以实现颗粒复合材料的真正优化填料分散过程。

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引用次数: 0

Large scale fused-granular-fabrication using recycled carbon fibre/PEKK-PEEK pellets derived from aerospace prepreg waste 使用回收的碳纤维/PEKK-PEEK颗粒从航空航天预浸料废料中提取的大规模熔融颗粒制造

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-11-15 DOI: 10.1016/j.coco.2025.102650

Ruan-Isabelle Richard Soucy , Adam W. Smith , Kevin Dupuis , Ilyass Tabiai , Martine Dubé

The manufacturing of thermoplastic unidirectional prepreg rolls involves trimming the edges as they do not meet specifications in terms of thickness and fibre content. This production waste, referred to as tape edge trim (TET), is recycled and transformed into pellets to be used as a feedstock for fused-granular-fabrication (FGF). In the transformation of the TET waste into pellets, neat PEEK polymer is added to the CF/PEKK TET to reduce the fibre content and improve the printability of the material. A large scale six-axis FGF printing robot is employed to print boxes from the recycled and virgin pellets. DSC analyses performed on recycled and virgin pellets reveal the degradation of PEEK and PEKK following aging at 380 °C or 400 °C under oxidative conditions, due to crosslinking reactions. However, no degradation is observed for specimens manufactured by FGF. As commonly observed for parts manufactured using extrusion-based techniques, the standard tensile and flexural specimens extracted from the FGF boxes demonstrate anisotropic mechanical properties. Additional boxes are manufactured by FGF using pellets obtained from shredded FGF box fragments to assess the capability of recycling the material a second time. A reduction of the stiffness and strength of the material is shown for this second recycling, which is assumed to be due to polymer chain scission and reduction in fibre length occurring during the shredding of the printed parts.

热塑性单向预浸料卷的制造涉及到修整边缘，因为它们在厚度和纤维含量方面不符合规格。这种生产废料，被称为带边修剪（TET），被回收并转化为颗粒，用作熔融颗粒制造（FGF）的原料。在将TET废料转化为球团的过程中，在CF/PEKK TET中加入整齐的PEEK聚合物，以降低纤维含量，提高材料的可印刷性。使用大型六轴FGF打印机器人将回收的和未加工的颗粒打印成盒子。DSC分析显示，在380°C或400°C氧化条件下老化后，由于交联反应，PEEK和PEKK的降解。然而，用FGF制造的样品没有观察到降解。正如通常观察到的使用挤压技术制造的零件一样，从FGF盒中提取的标准拉伸和弯曲样品显示出各向异性的机械性能。FGF使用从粉碎的FGF盒子碎片中获得的颗粒制造额外的盒子，以评估第二次回收材料的能力。第二次回收显示材料的刚度和强度降低，这被认为是由于聚合物链断裂和纤维长度减少，在粉碎印刷部件期间发生。

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引用次数: 0

Probabilistic design optimisation of GFRP bolted joints under geometric uncertainties using 3D PDM and response surface methodology 基于三维PDM和响应面方法的几何不确定性下GFRP螺栓连接概率优化设计

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-11-27 DOI: 10.1016/j.coco.2025.102660

Deepti Ranjan Mohapatra, Suryamani Behera, Subhajit Mondal

In this paper, the mechanical response of a single-lap woven GFRP bolted joint is analysed for uncertainties associated with geometrical parameters, including the ratios of edge distance to bolt diameter (e1/db), laminate width to bolt diameter (w/db) and laminate length to bolt diameter (L/db), bolt diameter to plate thickness (db/tp), and bolt hole clearance (cl). The experimentally obtained responses are validated using a finite element model incorporating a 3D progressive damage model. The failure criteria are modified for woven GFRP and implemented using a user material subroutine. A peak load deviation of 1.53 % between experimental investigations and the finite element model suggests the effectiveness of the 3D model. A design space is developed using the Central Composite Design (CCD) of Response Surface Methodology (RSM) to statistically designate critical points and significantly reduce the required dataset for variation analysis. A goodness-of-fit test is conducted to gain crucial insight into response variation, and an appropriate probability distribution function, log gamma, is determined for the variability design of the peak load in a single-lap bolted joint. The analysis of variance suggests the e1/db ratio as the most significant parameter. Similarly, e1/db and db/tp are observed to be the most influential pairwise interacting parameters. Furthermore, the quadratic empirical equation from CCD of RSM is used as an objective function in the Genetic Algorithm (GA) to ascertain the optimal parameters within the developed design space. The optimised geometrical parameters are observed to maximise the peak load by 75.39 % in comparison to the baseline model.

本文分析了单搭编织GFRP螺栓连接的力学响应，考虑几何参数的不确定性，包括边缘距离与螺栓直径之比（e1/db）、层压宽度与螺栓直径之比（w/db）、层压长度与螺栓直径之比（L/db）、螺栓直径与板厚之比（db/tp）和螺栓孔间隙（cl）。利用结合三维渐进损伤模型的有限元模型对实验得到的响应进行了验证。对编织GFRP的失效标准进行了修改，并使用用户材料子程序实现。试验结果与有限元模型的峰值荷载偏差为1.53%，表明了三维模型的有效性。利用响应面法（RSM）的中心复合设计（CCD）开发了一个设计空间，以统计指定临界点，并显着减少变异分析所需的数据集。进行了拟合度试验，以获得响应变化的关键信息，并确定了用于单搭螺栓连接峰值载荷变异性设计的适当概率分布函数log γ。方差分析表明e1/db比值是最显著的参数。同样，e1/db和db/tp被观察到是最具影响力的两两相互作用参数。在此基础上，利用RSM CCD的二次经验方程作为遗传算法的目标函数，确定了设计空间内的最优参数。与基线模型相比，观察到优化的几何参数使峰值负载最大化75.39%。

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引用次数: 0

Tri-layered PVA-CS-GEL hydrogel@ PCL-GEL @ PCL-PLA vascular grafts with enhanced mechanical properties and endothelialization 三层PVA-CS-GEL水凝胶@ PCL-GEL @ PCL-PLA血管移植物具有增强的机械性能和内皮化

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-11-03 DOI: 10.1016/j.coco.2025.102638

Yang Chen , Chuyao Ni , Zihao Zhou , Jianwu Xiao , Jun Cao , Jiaqi Pan , Chaorong Li , Yingying Zheng

Design of small-caliber vascular grafts with bioactivity and outstanding mechanical characteristics is critical for their use in vascular tissue engineering. In this work, tri-layered fiber-reinforced hydrogel composite vascular grafts capable of promoting endothelialization and preventing thrombosis were prepared. The outmost layer was obtained through electrospinning of polycaprolactone (PCL) and polylactic acid (PLA), the intermediate layer was electrospun from PCL and gelatin (GEL), and the inner hydrogel layer consisted of polyvinyl alcohol (PVA), chitosan (CS) and gelatin (GEL). The external fibrous layers provided vascular grafts with enhanced mechanical properties, which exceeded many natural blood vessels and commercial vascular grafts, and the inner hydrogel layer provided excellent cytocompatibility, hemocompatibility, and endothelialization. Physical cross-linking within PVA hydrogel through hydrogen bonding and chemical cross-linking between GEL and CS modulated the pore size of hydrogels. In cell culture of HUVECs, the composite vascular grafts demonstrated superior endothelialization, achieving the largest endothelialized area (99.97 %) on day 7. The tri-layered vascular graft with electrospun PCL-PLA @ PCL-GEL layer and PVA-CS-GEL hydrogel is a promising potential alternative in vascular tissue engineering.

设计具有生物活性和突出机械特性的小口径血管移植物对于其在血管组织工程中的应用至关重要。本研究制备了具有促进内皮化和预防血栓形成功能的三层纤维增强水凝胶复合血管移植物。最外层由聚己内酯（PCL）和聚乳酸（PLA）静电纺丝制成，中间层由PCL和明胶（GEL）静电纺丝制成，内层由聚乙烯醇（PVA）、壳聚糖（CS）和明胶（GEL）组成。外部纤维层为血管移植物提供了增强的力学性能，超过了许多天然血管和商业血管移植物，而内部水凝胶层具有优异的细胞相容性、血液相容性和内皮化。PVA水凝胶内部通过氢键的物理交联和凝胶与CS之间的化学交联调节了水凝胶的孔径。在HUVECs的细胞培养中，复合血管移植物表现出良好的内皮化，在第7天内皮化面积最大（99.97%）。静电纺聚乳酸-聚乳酸-凝胶层和聚乳酸- cs -凝胶水凝胶的三层血管移植物是一种很有前途的血管组织工程替代材料。

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引用次数: 0

Fabrication of fibrous dielectric elastomer with enhanced electromechanical performance by incorporating La-doped barium titanate encapsulated carbon nanotubes 掺杂镧钛酸钡包封碳纳米管制备具有增强机电性能的纤维介质弹性体

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-10-17 DOI: 10.1016/j.coco.2025.102620

Xiaofeng Zhang , Sai Wang , Chao Teng , Junyi Liu , Yanfen Zhou , Xinyu Feng , Qiuping Xie , Shuo Luan , Feng-lei Zhou , Liang Jiang , Stephen Jerrams

One-dimensional fibrous dielectric elastomers (DEs) can experience uniaxial displacement when electrical signals are applied to them and in consequence, they can imitate the contraction and elongation of artificial muscles. However, it is still a challenge to obtain fibrous DEs possessing high electric field induced deformations. In this work, the fabrication of high dielectric lanthanum-doped barium titanate (La-BTO) encapsulated multiwall carbon nanotubes (MWCNTs) (La-BTO@MWCNTs) incorporated in styrene-ethylene-butylene-styrene copolymer (SEBS) is described. The outcome of this process is a DE with excellent electromechanical performance. The results obtained from testing demonstrated that La doping effectively enhanced the dielectric constant of La-BTO@MWCNTs. A high dielectric constant of 2.77 was achieved for a low amount of La doping (the molar ratio of Ba:La was 100:1). The DE actuator (DEA) containing 2.0 % La-BTO@MWCNTs exhibited a maximum actuated longitudinal strain of 23.12 % and a maximum output force of 25.85 mN for an electric field of 50 V/μm. Furthermore, the SEBS/La-BTO@MWCNTs based DEA provided reliable working stability over 100 voltage cycles from 0 to 5 kV. This text describes a simple and effective new method for developing high performance DEAs to realize applications in the fields of soft robotics, biomedical devices and adaptive systems.

一维纤维介电弹性体（DEs）在电信号作用下可以发生单轴位移，从而可以模拟人工肌肉的收缩和伸长。然而，获得具有高电场致变形的纤维性DEs仍然是一个挑战。在本工作中，描述了在苯乙烯-乙烯-丁烯-苯乙烯共聚物（SEBS）中掺入高介电镧掺杂钛酸钡（La-BTO）封装多壁碳纳米管（MWCNTs）（La-BTO@MWCNTs）的制备。该工艺的结果是机电性能优异的DE。测试结果表明，La掺杂有效地提高了La-BTO@MWCNTs的介电常数。在少量La掺杂（Ba:La的摩尔比为100:1）的情况下，获得了2.77的高介电常数。当电场为50 V/μm时，含有2.0 % La-BTO@MWCNTs的DE致动器（DEA）的最大致动纵向应变为23.12%，最大输出力为25.85 mN。此外，基于SEBS/La-BTO@MWCNTs的DEA在0至5 kV的100个电压周期内提供了可靠的工作稳定性。本文描述了一种简单有效的开发高性能dea的新方法，以实现在软机器人、生物医学设备和自适应系统等领域的应用。

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引用次数: 0

Engineering uniformly dispersed micro/nano aramid fiber networks via acoustic resonance mixing at the interlayers of basalt fiber composites: A significant leap in interlaminar toughness 在玄武岩纤维复合材料层间通过声共振混合实现均匀分散的微/纳米芳纶纤维网络：层间韧性的重大飞跃

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-10-14 DOI: 10.1016/j.coco.2025.102613

Shulan Jiang , Weiwei Yu , Hao Ma , Guanghui Zhu , Xiaobin Zhan

This study employs acoustic resonance mixing technology to achieve uniform dispersion of highly polymerized micro/nano aramid fibers within the epoxy resin matrix, while successfully constructing a uniformly distributed micro/nano aramid fiber network at the interlayers of unidirectional basalt composites. Three-point bending tests were employed to systematically analyze the mechanical properties of the prepared samples in both longitudinal and transverse directions. Under the condition of acoustic resonance mixing time of 10 min and vibration parameter of 60 Hz-4mm, the longitudinal and transverse samples exhibited superior flexural properties compared to the control group, flexural strength increased by 30.4 % and 50 %, respectively, while elastic modulus rose by 25.3 % and 152.4 %, respectively. The energy absorption increased by 46.3 % and 36.3 %, respectively. The experimental findings demonstrate that the flexural strength of the composite material exhibits significant enhancement in both longitudinal and transverse dimensions, owing to the uniform dispersion of micro-nano aramid fibers within the epoxy resin matrix achieved by acoustic resonance mixing technology, which constructs the interlaminar fiber network of the composite structure. Meanwhile, micro/nano aramid fibers notably enhance the anti-delamination performance and interlaminar strength of the composites via the bridging effect of the epoxy resin matrix.

本研究采用声共振混频技术，实现了高聚合微纳芳纶纤维在环氧树脂基体内的均匀分散，同时在单向玄武岩复合材料层间成功构建了均匀分布的微纳芳纶纤维网络。采用三点弯曲试验，系统分析了制备的试样在纵向和横向上的力学性能。在声共振混合时间为10 min、振动参数为60 Hz-4mm的条件下，纵向和横向试样的抗弯性能均优于对照组，抗弯强度分别提高了30.4%和50%，弹性模量分别提高了25.3%和152.4%。能量吸收分别提高了46.3%和36.3%。实验结果表明，复合材料的抗弯强度在纵向和横向上都有显著提高，这是由于声共振混合技术使微纳芳纶纤维在环氧树脂基体内均匀分散，从而构建了复合材料结构的层间纤维网络。同时，微纳芳纶纤维通过环氧树脂基体的桥接作用，显著提高了复合材料的抗分层性能和层间强度。

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引用次数: 0

Designing a rigid–flexible hybrid interface using silanized fly ash and an epoxy resin sizing agent to enhance the mechanical properties of carbon fibers/epoxy resin composites 采用硅化粉煤灰和环氧树脂施胶剂设计刚柔复合界面，提高碳纤维/环氧树脂复合材料的力学性能

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-11-04 DOI: 10.1016/j.coco.2025.102634

Lu-Yao Zhang , Xiang-Lin Ma , Jian Zhao , Lu Liu , Lu-Lu Wang , Duo-Zhi Wang

The interfacial properties of carbon fiber/epoxy resin (CFRP) composites play a critical role in determining their overall performance and application potential. In this study, the surface of carbon fibers was modified using silanized fly ash (FA), which was incorporated into an amine-modified epoxy resin sizing agent. This approach optimized the fiber–resin interface of CFRP composites by forming an organic–inorganic hybrid structure, thereby enhancing mechanical properties through a multiscale mechanism. Short beam shear and micro-debonding tests showed that the interlamellar shear strength (ILSS) and interfacial shear strength (IFSS) of FA-modified CFRP composites increased significantly to 106.49 MPa and 70.3 MPa, respectively, which are 71.6 % and 77.1 % higher than those of unmodified CFRP composites. This enhancement was attributed to increased interfacial roughness, which was validated by SEM observation of the resin residue on the fiber surfaces, and a higher density of chemical bonds. Additionally, the tensile strength and elastic modulus of the modified CFRP composites were improved by 29 % and 14.2 %, respectively, while contact angle measurements confirmed enhanced carbon fiber wettability. This study establishes a dual-function strategy that simultaneously enhances mechanical performance and promotes the sustainable utilization of industrial byproducts, providing key insights for developing ecologically efficient, high-performance CFRP composites.

碳纤维/环氧树脂（CFRP）复合材料的界面性能是决定其整体性能和应用潜力的关键因素。本研究将硅化粉煤灰（FA）掺入胺改性环氧树脂施胶剂中，对碳纤维表面进行改性。该方法通过形成有机-无机杂化结构来优化CFRP复合材料的纤维-树脂界面，从而通过多尺度机制提高力学性能。短梁剪切和微剥离试验表明，fa改性CFRP复合材料的层间抗剪强度（ILSS）和界面抗剪强度（IFSS）分别达到106.49 MPa和70.3 MPa，较未改性CFRP复合材料提高了71.6%和77.1%。这种增强是由于界面粗糙度的增加，这是通过扫描电镜观察纤维表面的树脂残留物验证的，并且化学键的密度更高。此外，改性CFRP复合材料的拉伸强度和弹性模量分别提高了29%和14.2%，而接触角测量证实了碳纤维的润湿性增强。本研究建立了一种双重功能策略，同时提高机械性能和促进工业副产品的可持续利用，为开发生态高效、高性能的CFRP复合材料提供了关键见解。

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引用次数: 0

Lightweight, high-strength SiO2@Al2O3 composite yarns and textiles for high-temperature thermal insulation 轻质，高强度SiO2@Al2O3复合纱线和纺织品用于高温保温

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-11-15 DOI: 10.1016/j.coco.2025.102646

Qianfu Chen , Kerun Hua , Yunna Chen , Dekai Lyu , Jiugang Li , Yu Zhou , Wenbin Li , Jiahao He

Weaving process of high-performance inorganic fibers is widely acknowledged as a considerable challenge in advanced manufacturing due to the inherent brittleness of the material and the rigorous demands for processing conditions. SiO₂@Al₂O₃ composite yarns with enhanced braiding characteristics were fabricated through a dual-hollow-spindle counter-rotating covering technique, followed by tubular braiding of core-sheath structured yarns incorporating alumina staple fiber slivers. Systematic investigation of critical parameters revealed that optimal braiding performance with minimized hairiness was achieved at a covering twist density of 200 twists/m. Through controlled modulation braiding angles from 30° to 60°, were established distinct structure-property relationships: 60°-braided yarns exhibited near-complete surface coverage (99.78 %), reduced braiding pitch (6.5 mm), and 16 % enhancement in breaking strength compared to 30° configurations, accompanied by improved diameter uniformity. The fabricated composite textiles exhibited outstanding thermal insulation properties (0.057 W/(m·K)) with low areal density (165 g/m²), achieving an optimal balance between lightweight properties, mechanical robustness, and high-temperature performance. Comparative characterization revealed enhanced thermal stability and structural integrity versus conventional alumina filament fabrics, while maintaining competitive flexibility relative to short-fiber nonwovens. Yarns and textiles fabricated using the synergistic integration of continuous filaments and staple fibers, as validated in this study for advanced thermal insulation, have been widely implemented in industrial thermal insulation.

高性能无机纤维的织造工艺由于其固有的脆性和对加工条件的严格要求，被广泛认为是先进制造中一个相当大的挑战。采用双空心锭反向旋转包覆技术制备了增强编织性能的SiO2@Al2O3复合纱线，然后将氧化铝短纤维条加入芯-护套结构纱线进行管状编织。对关键参数的系统研究表明，在200转/米的编织密度下，毛羽最少的编织性能达到最佳。通过从30°到60°的编织角度控制调制，建立了不同的结构-性能关系：60°编织的纱线具有接近完全的表面覆盖率（99.78%），编织间距减少（6.5 mm），与30°编织相比，断裂强度提高了16%，同时直径均匀性得到改善。制备的复合纺织品具有优异的隔热性能（0.057 W/(m·K)）和低面密度（165 g/m2），实现了轻质性能、机械坚固性和高温性能之间的最佳平衡。对比表征表明，与传统氧化铝长丝织物相比，该材料具有更高的热稳定性和结构完整性，同时与短纤维非织造布相比，保持了具有竞争力的柔韧性。利用连续长丝和短纤维的协同集成制造的纱线和纺织品，在本研究中验证了先进的保温性能，已广泛应用于工业保温。

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引用次数: 0

A core-shell lubricant hybrid enabling superior tribological performance of fabric composites 一种核壳混合润滑剂，使织物复合材料具有优越的摩擦学性能

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

Composites Communications

Pub Date : 2025-12-01 Epub Date: 2025-10-28 DOI: 10.1016/j.coco.2025.102628

Hao Chen , Zhaozhu Zhang , Mingming Yang , Yaohui He , Chaoying Liao , Yue Zhang , Fanjie Chu , Junya Yuan

Fabric-reinforced polymer composites face severe wear challenges under heavy-load conditions in tribological components. The development of novel fillers integrating high load-bearing capacity with sustained lubrication is crucial for enhancing their service performance. This study innovatively designs a covalent grafting strategy to successfully construct a hybrid material with a “core–shell–sustained lubrication layer” architecture. In this structure, two-dimensional Ti₃C₂T_x MXene serves as the mechanical support core, a nickel–aluminum layered double hydroxide (LDH) shell is grown in situ on its surface via a solvothermal method, and then 1-butyl-3-methylimidazolium tosylate ionic liquid is covalently anchored to the hybrid surface using a silane coupling agent. Experimental results demonstrate that incorporating only 1 wt% of this hybrid material leads to a remarkable 37.5 % reduction in the wear rate of basalt fiber/polytetrafluoroethylene fabric liner composites. The outstanding tribological performance originates from a multi-component synergistic effect: the MXene core effectively disperses stress, the LDH shell enhances interfacial stability and is transformed into protective nanocrystalline oxides at the friction interface, while the covalently bonded ionic liquid outer layer provides long-lasting lubrication and excellent thermal management. This work provides new insights into addressing the issues of easy migration and poor compatibility of traditional lubricating fillers, establishing a solid foundation for developing high-performance friction liner materials.

织物增强聚合物复合材料的摩擦学部件在重载条件下面临着严峻的磨损挑战。开发集高承载能力和持续润滑于一体的新型填料是提高其使用性能的关键。本研究创新性地设计了共价接枝策略，成功构建了具有“核-壳-持续润滑层”结构的杂化材料。在该结构中，二维Ti3C2Tx MXene作为机械支撑核，通过溶剂热法在其表面原位生长镍铝层状双氢氧化物（LDH）壳层，然后使用硅烷偶联剂将1-丁基-3-甲基咪唑甲酯离子液体共价固定在杂化表面。实验结果表明，在玄武岩纤维/聚四氟乙烯复合材料中掺入1wt %的杂化材料，其磨损率显著降低37.5%。优异的摩擦学性能源于多组分的协同作用：MXene核心有效分散应力，LDH壳增强界面稳定性，并在摩擦界面转化为保护纳米晶氧化物，而共价键合的离子液体外层提供持久的润滑和出色的热管理。该研究为解决传统润滑填料易迁移和相容性差的问题提供了新的见解，为开发高性能摩擦衬垫材料奠定了坚实的基础。

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