【新文速递】2025年11月14日复合材料SCI期刊最新文章

今日更新：Composite Structures 4 篇，Composites Part A: Applied Science and Manufacturing 2 篇，Composites Part B: Engineering 3 篇，Composites Science and Technology 4 篇Composite StructuresLearning the history-dependent material behavior of viscoelastic composites using recurrent neural operatorMin Shen, Sheng Maodoi:10.1016/j.compstruct.2025.119718用递归神经算子学习粘弹性复合材料的历史依赖材料行为Modeling the finite-deformation, history-dependent behavior of heterogeneous viscoelastic composites remains a challenge due to the complex interactions across multiple scales. High-fidelity methods, such as FE2 methods, can capture the detailed physics of composites at mesoscopic scales, but are often computationally prohibitive. In this work, we propose a recurrent neural operator (RNO)-based framework that efficiently captures the multiscale viscoelastic response of composite materials under large strains. Data used for training the RNO model is generated by offline calculation at the level of representative volume element (RVE) and by the use of proper sampling method and neural network architecture, the RNO model is able to predict both the macroscopic stress and the evolution of internal state variables, achieving accurate and physically consistent results. The developed framework preserves key physical properties, such as objectivity and thermodynamic consistency, and enables flexible deployment across different loading rates and resolutions without retraining. The model was further validated through macroscopic examples, confirming the model’s capability to capture complex path-dependent effective responses with high fidelity. This study demonstrates the potential of operator learning to transform multiscale modeling of complex materials, offering an efficient and scalable alternative to conventional approaches.由于多尺度复杂的相互作用，非均质粘弹性复合材料的有限变形、历史依赖行为建模仍然是一个挑战。高保真度方法，如FE2方法，可以在介观尺度上捕获复合材料的详细物理，但通常在计算上是禁止的。在这项工作中，我们提出了一个基于递归神经算子（RNO）的框架，该框架可以有效地捕获大应变下复合材料的多尺度粘弹性响应。用于RNO模型训练的数据是通过代表性体积元（representative volume element， RVE）层面的离线计算生成的，通过适当的采样方法和神经网络架构，RNO模型既能预测宏观应力，又能预测内部状态变量的演化，得到准确且物理一致的结果。开发的框架保留了关键的物理特性，例如客观性和热力学一致性，并且无需重新培训即可灵活部署不同的加载速率和分辨率。通过宏观算例进一步验证了该模型，证实了该模型能够以高保真度捕获复杂路径依赖的有效响应。这项研究展示了操作员学习在转换复杂材料的多尺度建模方面的潜力，为传统方法提供了一种高效和可扩展的替代方案。Damage detection and evaluation in composite laminates using path length between adjacent peaks of AE signal from fiber optic sensorByeong-Wook Jangdoi:10.1016/j.compstruct.2025.119729基于光纤传感器声发射信号相邻峰间路径长度的复合材料层合板损伤检测与评价A low-velocity impact is one of the events that has a critical effect on the safety of composite laminated structures. This paper addresses the difficulty of detecting invisible damages induced by an impact in order to prevent structural failures. Composite flat plates were prepared for impact experiments, and acoustic emission signals were measured by fiber Bragg grating sensors. Firstly, the differences in signal characteristics in the intact and damaged cases were investigated. For intact cases, the waveform was symmetrical and the generated signal peaks were uniform. On the contrary, the signals of damaged cases were contaminated by emitted acoustic waves induced from damages. Through signal processing that identifies such differences, damages could be detected. Also, due to the influence of the AE signals from the damage that is generated between each lamina, the peaks tend to occur irregularly in the signal. It means that the number of peaks increased and frequent changes of path length between adjacent peaks occurred in the signals of damaged cases. By quantifying these phenomena, the induced damages were evaluated and validated from experimental results. This paper offers efficient and robust method for measuring delamination of laminated composites using the simple fiber optic sensing system.低速碰撞是影响复合材料层合结构安全的关键事件之一。本文解决了检测由冲击引起的无形损伤以防止结构失效的困难。制备了用于冲击实验的复合材料平板，利用光纤光栅传感器对声发射信号进行了测量。首先，研究了完好和受损情况下信号特征的差异。完整情况下，波形对称，产生的信号峰均匀。相反，受损壳体的信号受到损伤引起的发射声波的污染。通过识别这些差异的信号处理，可以检测到损坏。此外，由于各层之间产生的损伤对声发射信号的影响，信号中的峰值倾向于不规则地出现。这意味着在受损情况下，信号中出现了峰数增加、相邻峰间路径长度频繁变化的现象。通过对这些现象进行量化，从实验结果中对诱导损伤进行评价和验证。本文提出了一种利用简单光纤传感系统测量复合材料分层的有效方法。Residual mechanical properties of GFRP composites from decommissioned wind turbine blades for structural reuseNagesh Ramaswamy, Bhupendra Joshi, Gangbing Song, Y.L. Modoi:10.1016/j.compstruct.2025.119739退役风力涡轮机叶片GFRP复合材料的残余力学性能研究The increasing number of decommissioned wind turbine blades (DWTBs) presents significant environmental and disposal challenges. This study evaluates the residual mechanical properties ofGFRPcomposites extracted from the spar cap of a 1.5 MW GE37 wind turbine blade after 11 years of service.An experimental program was conducted including tensile, compressive, flexural, and short beam shear tests in both longitudinal and transverse directions. Longitudinal specimens retained high tensile strength (621 MPa), compressive strength (372 MPa), and modulus (37.5 GPa), representing 76–96 % of pristine GFRP values.In contrast,the transverse directionspecimen exhibited relatively lower mechanical properties due to the anisotropic nature of the composite material. The characteristic values of the mechanical properties were estimated using the t-distribution method at 80 % and 90 % confidence levels providing a statistically reliable lower bound for conservative and safe design applications. The anisotropic behavior of the composites was clearly observed, reinforcing the importance of fiber orientation in load-bearing applications. These findings confirm the potential for reusing DWTB composites in secondary structural elements, particularly in civil infrastructure applications. By demonstrating retained structural capacity, this study supports circular economy initiatives and provides engineers with the necessary data for integrating recycled composites into sustainable construction practices.越来越多的风力涡轮机叶片退役给环境和处理带来了重大挑战。本研究评估了从1.5 MW GE37风力涡轮机叶片的梁帽中提取的gfrp复合材料在11 年的使用后的残余力学性能。实验程序进行了包括拉伸，压缩，弯曲和短梁剪切试验在纵向和横向。纵向试样保持高抗拉强度（621 MPa）、抗压强度（372 MPa）和模量（37.5 GPa），占原始GFRP值的76 - 96% %。相反，由于复合材料的各向异性，横向试样的力学性能相对较低。力学性能的特征值使用t分布方法在80 %和90 %置信水平上进行估计，为保守和安全设计应用提供了统计可靠的下限。复合材料的各向异性行为被清楚地观察到，增强了纤维取向在承载应用中的重要性。这些发现证实了DWTB复合材料在二级结构元件中的再利用潜力，特别是在民用基础设施应用中。通过展示保留的结构能力，本研究支持循环经济倡议，并为工程师将再生复合材料整合到可持续建筑实践中提供必要的数据。Coarse-grained molecular dynamics study of modulus transition and effects of debonding condition on debonding behavior at fiber-resin interfacesJialiang Li, Zeyu Li, Haiyang Gong, Yujun Li, Jianjun Jiangdoi:10.1016/j.compstruct.2025.119749 纤维-树脂界面模量转变的粗粒度分子动力学研究及脱粘条件对脱粘行为的影响Mechanical performance of fiber-reinforced composites is dictated by stress transfer and energy dissipation within the fiber-resin interphase, governed by its modulus gradient and rate-dependent behavior. However, the coupled influence of interphase thickness and strain rate on these properties, particularly the governing physics of the modulus transition, remains insufficiently characterized. This study employs coarse-grained molecular dynamics simulations to systematically investigate the debonding of a carbon fiber/epoxy interphase across a range of thicknesses (8–20 nm) and velocities (0.00001–0.001 Å/fs). The simulations reveal strong rate dependency: higher velocities suppress polymer chain relaxation, promoting more pronounced irreversible deformation that enhances interfacial strength and toughness. Notably, thinner interphases exhibit heightened sensitivity to loading rate. Their strength increases by 41.7 % over the velocity range, compared to 28.8 % for thicker counterparts, highlighting the pivotal role of chain dynamics. A distinct modulus gradient, originating from nanoconfinement-induced non-uniformities in chain mobility and stress distribution, is observed extending from the fiber surface into the matrix. Based on these findings, an exponential decay model is proposed that accurately captures this modulus profile, providing an essential constitutive input for multiscale modeling. These findings elucidate fundamental failure mechanis ms and offer a theoretical framework for the rational design of tailored interphases for high-performance composites.纤维增强复合材料的力学性能取决于纤维-树脂界面内的应力传递和能量耗散，受其模量梯度和速率依赖行为的支配。然而，界面厚度和应变速率对这些特性的耦合影响，特别是模量转变的控制物理，仍然没有充分表征。本研究采用粗粒度分子动力学模拟系统地研究了碳纤维/环氧树脂界面相在厚度（8-20 nm）和速度（0.00001-0.001 Å/fs）范围内的脱粘。模拟结果表明，高速度抑制聚合物链弛豫，促进更明显的不可逆变形，从而提高界面强度和韧性。值得注意的是，更薄的界面对加载速率的敏感性更高。在速度范围内，它们的强度增加了41.7%，而较厚的同类则增加了28.8%，突出了链动力学的关键作用。一个明显的模量梯度，起源于纳米束缚引起的链迁移率和应力分布的不均匀性，观察到从纤维表面延伸到基体。基于这些发现，我们提出了一个指数衰减模型，该模型可以准确地捕获这种模量分布，为多尺度建模提供必要的本构输入。这些发现阐明了基本的失效机制，并为高性能复合材料定制界面的合理设计提供了理论框架。Composites Part A: Applied Science and ManufacturingPhosphorus-nitrogen synergistic flame retardant system for high-performance polypropylene composites reinforced with recycled wind turbine blade powderPeng Chen, Chunming Zhang, Haowen Sun, Zhilong Pu, Shuangqiao Yang, Yuan Liudoi:10.1016/j.compositesa.2025.109340 再生风力发电机叶片粉末增强高性能聚丙烯复合材料的磷氮协同阻燃系统Recycling decommissioned wind turbine blades (WTBs) as reinforcing fillers in polypropylene (PP) composites offers a sustainable solution for WTB waste management. However, the intrinsic ‘wick effect’ of WTB particles severely compromises the flame retardancy of resulting composites. To address this challenge, we developed a novel phosphorus-rich flame retardant via an electrostatic assembly strategy, combining phytate piperazine (PAPI) with melamine polyphosphate (MPP) in a 2:1 ratio. The rPP/FR-5 composite (PAPI/MPP 20 wt% total loading) exhibits exceptional condensed-phase char formation and phosphorus-nitrogen synergy, achieving a 67.90 % reduction in peak heat release rate (PHRR), 26.21 % lower total heat release (THR), and a limiting oxygen index (LOI) of 28.6 %, successfully attaining the UL-94 V-0 standard. Remarkably, the rPP/FR-5 composite simultaneously displays enhanced tensile and flexural strength (increased by 13.8 % and 34.0 % respectively) alongside impact resistance comparable to that of PP, attributed to superior dispersion and interfacial compatibility of the flame retardant. In summary, this work provides a scalable strategy to suppress the ‘wick effect’ in WTB-reinforced PP composites, advancing both fire safety and mechanical performance for high-performance structural applications.回收退役的风力涡轮机叶片（WTBs）作为聚丙烯（PP）复合材料的增强填料，为WTBs废物管理提供了一个可持续的解决方案。然而，WTB颗粒固有的“灯芯效应”严重损害了所得复合材料的阻燃性。为了解决这一挑战，我们通过静电组装策略开发了一种新型富磷阻燃剂，将植酸哌嗪（PAPI）与三聚氰胺聚磷酸（MPP）以2:1的比例结合。rPP/FR-5复合材料（PAPI/MPP 20 wt%总负荷）表现出优异的凝聚相炭形成和磷氮协同作用，峰值放热率（PHRR）降低67.90 %，总放热率（THR）降低26.21 %，极限氧指数（LOI）降低28.6 %，成功达到UL-94 V-0标准。值得注意的是，rPP/FR-5复合材料同时显示出与PP相当的拉伸和弯曲强度（分别增加13.8 %和34.0 %）以及抗冲击性，这归功于阻燃剂的优异分散性和界面相容性。总之，这项工作提供了一种可扩展的策略来抑制wtb增强PP复合材料的“灯芯效应”，提高了高性能结构应用的消防安全和机械性能。Multiphase-synergistic regulation strategy achieving superior strength-plasticity and prolonged strain-hardening of (Ti, Nb)B-reinforced Ti2AlNb compositeZiyuan Jia, Yu Zhang, Jiayi Jin, Hao Sun, Zibo Zhao, Weihang Lu, Lujun Huang, Lin Gengdoi:10.1016/j.compositesa.2025.109351 多相协同调控策略实现了（Ti, Nb） b增强Ti2AlNb复合材料优异的强度塑性和长时间的应变硬化Achieving excellent strength and plasticity of Ti2AlNb alloys is vital for aerospace applications, while this goal is often impeded by a strength-plasticity trade-off. Here, the stable network configuration was tailored through tiny (Ti, Nb)B whiskers, which decreased the primary B2 grain size from 647.1 μm of the sintered alloy to ∼ 100 μm. This study proposed a multiphase-synergistic regulation strategy by employing one-step solution treatment to simultaneously regulate matrix microstructure and retain the network configuration. Through the strategy, the superior tensile strength of 1087.1 MPa, yield strength of 954.1 MPa, and excellent uniform elongation of 16.6 % were achieved. Compared to the sintered alloy, the tensile strength and elongation of composite were enhanced by 13 % and 8.7 times, respectively. The refined O lamellae, interconnected B2 phase enhanced dislocation storage capacity, leading to higher dislocation density and prolonged strain hardening. The significantly enhanced strength benefited from solid solution strengthening, fine grain strengthening and load transfer strengthening. The excellent plasticity arose from relatively uniform strain partitioning between O and B2 phases at high strain levels, enabled by the activation of multi-system slips. This study emphasizes the importance of reinforcement configuration and microstructure control for advanced TiAl-based composite design.实现优异的Ti2AlNb合金的强度和塑性对于航空航天应用至关重要，而这一目标往往受到强度-塑性权衡的阻碍。在这里，通过微小的（Ti, Nb）B晶须定制稳定的网络结构，将烧结合金的初级B2晶粒尺寸从647.1 μm降低到 ~ 100 μm。本研究提出了一种多相协同调节策略，通过一步固溶处理同时调节基体微观结构并保持网络结构。通过该策略，获得了优异的抗拉强度1087.1 MPa，屈服强度954.1 MPa，均匀伸长率16.6 %。与烧结合金相比，复合材料的抗拉强度和伸长率分别提高了13 %和8.7倍。细化的O片层和相互连接的B2相增强了位错的存储能力，导致位错密度增大，延长了应变硬化时间。固溶强化、细晶强化和载荷传递强化均显著提高了材料的强度。优异的塑性源于高应变水平下O相和B2相之间相对均匀的应变分配，这是由多系统滑移激活所实现的。本研究强调了增强结构和微观结构控制对先进tial基复合材料设计的重要性。Composites Part B: EngineeringMultifunctional metamaterials based on MXene composite aerogels for integrated load-bearing and multiphysics wave attenuationXiangxiang Zhang, Zhicheng Wang, Guotai Zhou, Jun Li, Chao Li, Cheng Lin, Xiaozhou Xindoi:10.1016/j.composites b.2025.113075基于MXene复合气凝胶的综合承载和多物理场波衰减多功能超材料Multifunctional aerogel has a wide range of prospects for application in aerospace and other fields, but its low strength and easy peeling limited the further application. In this work, multifunctional metamaterials consisting of 4D-printed bio-inspired mechanical metamaterials and multifunctional aerogels was developed, which combined advantages of lightweight, excellent mechanical behaviors, electromagnetic wave absorption, thermal insulation and sound absorption. In particular, 4D printed shape memory mechanical metamaterials exhibited excellent load-bearing and energy-absorbing properties as well as programmability of their configuration and mechanical properties. Composite aerogel-based multifunctional metamaterials exhibited excellent properties of infrared thermal stealth, adjustable sound absorption and electromagnetic wave absorption, which covered almost the entire Ku-band. The developed metamaterial integrates mechanical, electromagnetic, acoustic and thermal functions, demonstrating broad application prospects in the aerospace field.多功能气凝胶在航空航天等领域具有广泛的应用前景，但其强度低、易剥离等缺点限制了其进一步应用。本研究开发了由3d打印仿生机械超材料和多功能气凝胶组成的多功能超材料，该材料结合了轻质、优异的力学性能、电磁波吸收、隔热和吸声等优点。特别是4D打印的形状记忆机械超材料表现出优异的承载和吸能性能，以及结构和力学性能的可编程性。复合气凝胶基多功能超材料具有优异的红外热隐身性能、可调吸声性能和电磁波吸收性能，几乎覆盖了整个ku波段。所开发的超材料集机械、电磁、声学和热学功能于一体，在航空航天领域具有广阔的应用前景。Bionic nanofiber membrane with hierarchical structure for directional sweat transport, photothermal conversion, electromagnetic protection and motion monitoringShushu Jia, Yanxu Lu, Yu Bai, Xiaohan Mei, Chunqi Guo, Xinyuan Shi, Guibin Wang, Shuling Zhangdoi:10.1016/j.composites b.2025.113088 具有层次化结构的仿生纳米纤维膜，可用于定向排汗、光热转换、电磁防护和运动监测The demand for multifunctional s mart materials is constantly increasing with the development of wearable electronic devices. However, persistent challenges remain in simultaneously achieving personal sweat management, photothermal conversion, electromagnetic protection and sport monitoring. Inspired by vascular plants, we prepared all-in-one nanofiber membranes (CuS@PDA/PAN-MXene-TPU) with multilayer structures through interface interaction between components, which showed the wettability and pore size gradients in the thickness direction. The biomimetic gradient structure achieved directional sweat transport (10 s) under antigravity conditions, and the water evaporation rate was 688 g·m-2·d-1. Furthermore, due to the synergistic effect of CuS and MXene, the membrane had photothermal conversion performance, with the temperature increasing from 25°C to 49°C under 50 mW·cm-2 near infrared (NIR) irradiation. In outdoor tests, the temperature of the biomimetic membrane was 15°C and 9°C higher than that of the cotton on sunny and cloudy days, respectively. The combination of directional sweat removal and photothermal conversion enhanced the comfort during outdoor activities in cold climates. Meanwhile, the dual-channel conductive network of CuS and MXene made CuS@PDA/PAN-MXene-TPU exhibit good electromagnetic interference (EMI) shielding effectiveness (48 dB) and sensitive strain-sensing capabilities (80 ms). This work provides a promising design strategy for the development of multifunctional s mart wearable materials.随着可穿戴电子设备的发展，对多功能智能材料的需求不断增加。然而，在同时实现个人汗液管理、光热转换、电磁保护和运动监测方面，仍然存在持续的挑战。受维管植物的启发，我们通过组分之间的界面相互作用，制备了具有多层结构的一体化纳米纤维膜（CuS@PDA/PAN-MXene-TPU），并在厚度方向上显示出润湿性和孔径梯度。仿生梯度结构在反重力条件下实现了定向输汗（10 s），水分蒸发速率为688 g·m-2·d-1。此外，由于cu和MXene的协同作用，膜具有光热转化性能，在50 mW·cm-2近红外（NIR）照射下，温度从25℃升高到49℃。在室外试验中，在晴天和阴天，仿生膜的温度分别比棉花高15℃和9℃。定向排汗和光热转换的结合增强了寒冷气候下户外活动的舒适性。同时，制备的cu和MXene双通道导电网络CuS@PDA/PAN-MXene-TPU具有良好的电磁干扰（EMI）屏蔽效果（48 dB）和灵敏的应变传感能力（80 ms）。这项工作为多功能智能可穿戴材料的开发提供了一种有前途的设计策略。High-performance dual-strategy reinforced spontaneously polarized nanofibers with tailored MXene interfaces for sustainable multifunctional intelligent textilesArchana Pandiyan, Renganathan Vengudusamy, Loganathan Veeramuthu, Amirthavarshini Muthuraman, Snekaa Babu, Hemanth Jawaharlal, Hao-Yuan Chen, Po-Hao Chen, Yu-Chen Wang, C.R. Kao, Hyunjin Lee, Tao Zhou, Chi-Ching Kuodoi:10.1016/j.composites b.2025.113089 高性能双策略增强自发极化纳米纤维与定制的MXene界面可持续多功能智能纺织品 S mart wearables have significantly transformed contemporary lifestyles by effectively integrating health monitoring, energy harvesting, and sustainable technology, thereby fostering innovative progress in both personal health and environmental sustainability. This study introduces reinforced spontaneously polarized nanofibers (RSNF) produced through a straightforward electrospinning method, which incorporates size confined and surface tailored (SCST) vanadium carbide (VC) MXene nanosheets into a poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) nanofiber composite. The addition of MXene promotes the self-assembly of crystalline phases into the piezoelectric β-phase, thereby substantially improving charge transfer efficiency. The developed piezoelectric nanogenerator utilizing RSNF membranes effectively harvested biomechanical energy, achieving a high output voltage of ∼27.8 V and current of ∼1.45 μA. Furthermore, the RSNF membranes displayed remarkable photo-piezocatalytic capabilities in the degradation of charged dyes, including Rhodamine B, Alizarin Red, and Indigo Carmine, under the influence of mechanical vibration and solar irradiation. Notably, Rhodamine B degradation reached 90% within 120 minutes through synergistic piezo-photocatalysis, exceeding the performance of standalone photocatalysis (41%) and piezocatalysis (61%) under the same conditions, thereby highlighting the enhanced catalytic activity resulting from the synergistic interaction between MXene and PVDF-HFP. The as-developed RSNF retained 88% piezoelectric performance after recycling, demonstrating scalable potential for advanced sustainable solutions in intelligent textiles and environmental remediation.智能可穿戴设备通过有效地整合健康监测、能量收集和可持续技术，显著改变了当代的生活方式，从而促进了个人健康和环境可持续性的创新进步。本研究介绍了通过直接静电纺丝方法生产的增强自发极化纳米纤维（RSNF），该方法将尺寸限制和表面定制（SCST）碳化钒（VC） MXene纳米片纳入聚偏氟乙烯-共六氟丙烯（PVDF-HFP）纳米纤维复合材料中。MXene的加入促进了晶体相自组装成压电β相，从而大大提高了电荷转移效率。利用RSNF膜开发的压电纳米发电机有效地收集了生物机械能，实现了高达27.8 V的高输出电压和1.45 μA的电流。此外，在机械振动和太阳辐照作用下，RSNF膜在降解罗丹明B、茜素红和靛蓝胭脂红等带电染料方面表现出了显著的光压电催化能力。值得注意的是，通过协同压电-光催化，Rhodamine B的降解在120分钟内达到90%，超过了相同条件下单独光催化（41%）和压电催化（61%）的性能，从而突出了MXene与PVDF-HFP之间的协同作用增强了催化活性。开发的RSNF在回收后保持了88%的压电性能，展示了在智能纺织品和环境修复中先进可持续解决方案的可扩展潜力。Composites Science and TechnologyBio-based Cyclic Acetal Epoxy Vitrimer Upcycling: From Composite Matrix to InterfaceZidie Song, Kangle Xue, Yuliang Xia, Hailong Liu, Tao You, Zibo Hua, Hong Cui, Li Liu, Zhen Hu, Yudong Huangdoi:10.1016/j.compscitech.2025.111411 生物基环缩醛环氧玻璃体升级回收：从复合基质到界面Epoxy resins, extensively employed as the polymer matrix in composites, face significant environmental challenges owing to their non-degradability. While incorporating dynamic acetal bonds offers promise, current acetal epoxies suffer from low modulus, poor thermal stability, and unoptimized degradation kinetics/performance balance. Furthermore, upcycling their degradation products yields only low-value additives with compromised properties. We present a bio-based epoxy vitrimer reconciling performance and circularity. Synthesized from vanillin and sorbitol, its key innovation is integrating multicyclic acetal motifs within the network. This vitrimer overcomes traditional limitations, achieving a high tensile modulus (3.63 GPa) and thermal stability (Td5: 331 °C), suitable for demanding applications. Its molecular design enables ultrafast degradation (within 6 min, 65 °C) in diluted acid, facilitated by high-density labile cyclic acetal crosslinks. Crucially, the aldehyde/hydroxyl-rich degradation products are upcycled into high-performance sizing agents for carbon fiber composites. These agents achieve interfacial shear strengths of 70-80 MPa, matching industrial standards and resolving the acetal-epoxy upcycling challenge. This work establishes a scalable, sustainable framework for high-performance polymers, enabling efficient composite recycling and aligning industrial needs with circular economy principles.环氧树脂作为复合材料中广泛使用的聚合物基体，由于其不可降解性而面临着重大的环境挑战。虽然加入动态缩醛键带来了希望，但目前的缩醛环氧树脂存在模量低、热稳定性差、降解动力学/性能平衡未优化等问题。此外，升级回收它们的降解产物只产生低价值的添加剂，性能受损。提出了一种性能与圆度相协调的生物基环氧树脂。由香兰素和山梨醇合成，其关键创新是在网络中整合多环缩醛基序。这种玻璃聚合物克服了传统的限制，实现了高拉伸模量（3.63 GPa）和热稳定性（Td5: 331°C），适用于要求苛刻的应用。它的分子设计能够在稀释酸中进行超快速降解（6分钟，65°C），通过高密度不稳定的环缩醛交联促进。至关重要的是，这些富含醛/羟基的降解产物被升级为碳纤维复合材料的高性能施胶剂。这些试剂的界面剪切强度达到70- 80mpa，符合工业标准，解决了缩醛-环氧树脂升级回收的挑战。这项工作为高性能聚合物建立了一个可扩展的、可持续的框架，实现了高效的复合材料回收，并将工业需求与循环经济原则相结合。Functionalized Degradable Soybean Oil-Based Biomimetic Porous Scaffolds for Complex Bone Defects: Vat Photopolymerization Additive Manufacturing, Photothermal-Mediated Shape Memory and Tumor ThermotherapyWang Guo, Yanting Wei, Chen Xu, Bowen Li, Yunlei Wu, Yu Gong, Huaming Mai, Shan Wang, Yong Zhang, Yu Longdoi:10.1016/j.compscitech.2025.111412 基于功能化可降解大豆油的复杂骨缺损仿生多孔支架：还原光聚合增材制造、光热介导的形状记忆和肿瘤热治疗Complex bone defects caused by trauma or disease represent a significant challenge in the field of bone tissue engineering. Additive manufacturing (AM)-based functionalized bone scaffolds offer promising potential for providing personalized solutions to treat such complex defects. Among these, epoxidized soybean oil acrylate (AESO), as an attractive bio-based photocurable resin, has enormous application potential in tissue engineering; however, issues such as high viscosity and low photosensitivity hinder its widespread use in vat photopolymerization (VPP). This study proposes improving the digital light processing (DLP) printing performance of AESO systems by incorporating isobornyl methacrylate (IBOMA), and simultaneously developing a shape-memory polymer (S MP) resin system. Furthermore, the scaffolds are endowed with NIR-triggered photothermal functionality through the incorporation of calcium lignosulfonate (CL), aiming to enable photothermal-mediated wireless remote shape memory and tumor suppression. Results show that DLP-fabricated triply periodic minimal surface (TPMS) composite bone scaffolds exhibit controllable biomimetic porous surfaces and tunable mechanical properties. The addition of CL endows the scaffolds with composition-dependent and NIR irradiation-modulated controllable photothermal response behavior under simulated physiological conditions, facilitating remote, controlled shape memory activation and mild, safe tumor cell suppression via photothermal therapy. Moreover, CL enhances scaffold hydrophilicity, promotes degradation through preferential dissolution and micro-porous surface formation, and enables sustained calcium ion release. These features improve biomineralization, supporting cell proliferation and osteogenic differentiation. This research provides a promising solution for the fabrication of biomimetic porous bone scaffolds using soybean oil-based photoreactive materials via VPP technology, with multifunction to address complex, irregular, and tumor-associated bone defects.创伤或疾病引起的复杂骨缺损是骨组织工程领域的一个重大挑战。基于增材制造（AM）的功能化骨支架为治疗此类复杂缺陷提供个性化解决方案提供了巨大的潜力。其中，环氧大豆油丙烯酸酯（AESO）作为一种极具吸引力的生物基光固化树脂，在组织工程中具有巨大的应用潜力；然而，高粘度和低光敏性等问题阻碍了其在还原光聚合（VPP）中的广泛应用。本研究提出通过加入甲基丙烯酸异硼酸酯（IBOMA）来改善AESO系统的数字光处理（DLP）打印性能，同时开发形状记忆聚合物（S MP）树脂体系。此外，通过加入木质素磺酸钙（CL），支架被赋予nir触发的光热功能，旨在实现光热介导的无线远程形状记忆和肿瘤抑制。结果表明，dlp制备的三周期最小表面（TPMS）复合骨支架具有可控的仿生多孔表面和可调的力学性能。CL的加入使支架在模拟生理条件下具有成分依赖和近红外辐射调节的可控光热响应行为，有利于通过光热治疗实现远程可控的形状记忆激活和轻度、安全的肿瘤细胞抑制。此外，CL增强支架的亲水性，通过优先溶解和微孔表面形成促进降解，并使钙离子持续释放。这些特征促进生物矿化，支持细胞增殖和成骨分化。本研究为利用大豆油基光反应材料通过VPP技术制备仿生多孔骨支架提供了一种有前景的解决方案，该材料具有多种功能，可解决复杂、不规则和肿瘤相关的骨缺损。Rigid-Flexible Interface Engineering of PANI/ZIF-67 Coated Basalt Fibers for High-Performance Epoxy Composites with EMI Shielding CapabilityWanghai Chen, Xuanyi Xu, Xinran Yang, Yuzi Jian, Jiazi Hou, Quanming Li, Yanli Doudoi:10.1016/j.compscitech.2025.111413 具有电磁干扰屏蔽性能的高性能环氧复合材料PANI/ZIF-67涂层玄武岩纤维的刚柔界面工程To enhance the interfacial adhesion and electromagnetic interference (EMI) shielding performance of basalt fiber-reinforced epoxy (BF/EP) composites, a hierarchical rigid–flexible structure was constructed by sequentially depositing polyaniline (PANI) and in-situ grown ZIF-67 nanosheets on basalt fibers. The PANI coating established a conductive network that facilitated charge transport and interfacial polarization, significantly improving electromagnetic wave absorption. Concurrently, the vertically aligned ZIF-67 provided structural rigidity and abundant interfacial bonding sites, promoting mechanical interlocking and stress transfer. This synergistic architecture created a gradient modulus interface, which effectively mitigated interfacial delamination and improved stress transfer efficiency. Compared to the BF/EP composites, the optimized Z3-PBF/EP composites demonstrated significant improvements in interfacial shear strength (63.7%), interlaminar shear strength (78.6%), flexural strength (44.2%), flexural modulus (68.1%) and impact strength (61.6%). The EMI shielding effectiveness reached 32.74 dB, dominated by absorption loss due to the integrated conductive and porous architecture. This work provides an effective and facile strategy for simultaneously improving the mechanical properties of the composite and imparting EMI shielding capability to basalt fiber composites.为了提高玄武岩纤维增强环氧树脂（BF/EP）复合材料的界面附着力和电磁干扰屏蔽性能，将聚苯胺（PANI）和原位生长的ZIF-67纳米片依次沉积在玄武岩纤维上，构建了刚柔复合材料的层次化结构。聚苯胺涂层建立了一个导电网络，促进了电荷传输和界面极化，显著提高了电磁波吸收。同时，垂直排列的ZIF-67提供了结构刚度和丰富的界面键合位点，促进了机械联锁和应力传递。这种协同结构创造了一个梯度模量界面，有效地缓解了界面分层，提高了应力传递效率。与BF/EP复合材料相比，优化后的Z3-PBF/EP复合材料在界面抗剪强度（63.7%）、层间抗剪强度（78.6%）、抗弯强度（44.2%）、抗弯模量（68.1%）和冲击强度（61.6%）方面均有显著提高。电磁干扰屏蔽效率达到32.74 dB，主要是由于导电和多孔结构的综合吸收损失。这项工作为同时提高玄武岩纤维复合材料的力学性能和增强电磁干扰屏蔽能力提供了一种有效而简便的策略。Modifying stacking sequences to leverage the effects of shear thickening gel (STG) on the impact resistance of the STG applied carbon fibre-reinforced polymer (SACFRP) composite laminatesWanrui Zhang, Jianchao Zou, Zongyou Wei, Zhibin Han, Lei Yang, Weizhao Zhangdoi:10.1016/j.compscitech.2025.111414 修改堆叠顺序，利用剪切增稠凝胶（STG）对STG应用于碳纤维增强聚合物（SACFRP）复合材料层合板的抗冲击性的影响In this work, shear-thickening-gel applied CFRP (SACFRP) composite laminates were developed to enhance the impact resistance of the composites under low-velocity impact (LVI) conditions, where the incorporated shear thickening gel (STG) worked as the interphase material between fibres and resin matrix. To ana lyse the effects of STG in its composites, static tensile and shear tests were first conducted on longitudinally and transversely positioned unidirectional (UD) SACFRP and its CFRP reference, respectively. Experimental results indicated that the corresponding reduction of the resin matrix due to the incorporation of the relatively soft STG weakened the interlaminar behaviour of the SACFRP laminates during static mechanical tests. However, the transverse tensile toughness of the SACFRP exhibited a remarkable 139% improvement compared to the CFRP reference, demonstrating significant interfacial toughening of the developed composites, as verified through SEM an alysis. To leverage the effects of the STG on the composites, this work modified the stacking sequences of SACFRP laminates. LVI tests and recurring LVI tests demonstrated the substantial improvement of impact performance for layup-designed SACFRP laminates since the impact-resistant mechanis m transitioned from the local damage of CFRPs to the global flexural behaviour of SACFRPs. Timoshenko’s an lytical model validated the resistant mechanis m transition of layup-designed SACFRP during LVI tests. Therefore, the SACFRP laminates with modified stacking sequences demonstrate outstanding potential for use under extreme loading conditions involving complex and unavoidable impacts, highlighting their broad applicability across various industries.在这项工作中，开发了剪切增稠凝胶应用于CFRP （SACFRP）复合材料层合板，以提高复合材料在低速冲击（LVI）条件下的抗冲击性，其中掺入的剪切增稠凝胶（STG）作为纤维和树脂基体之间的界面材料。为了分析STG在其复合材料中的作用，首先分别对纵向和横向定位的单向（UD） SACFRP及其CFRP基准进行了静态拉伸和剪切试验。实验结果表明，在静态力学试验中，相对柔软的STG掺入导致树脂基体的相应减少，削弱了SACFRP层合板的层间行为。然而，与CFRP相比，SACFRP的横向拉伸韧性提高了139%，表明复合材料的界面增韧显著，通过SEM分析证实了这一点。为了充分利用STG对复合材料的影响，本工作修改了SACFRP层压板的堆叠顺序。LVI试验和重复LVI试验表明，由于抗冲击机制从cfrp的局部损伤转变为SACFRP的整体弯曲行为，分层设计的SACFRP层合板的冲击性能有了实质性改善。Timoshenko的分析模型在LVI试验中验证了分层设计SACFRP的抗性机制转变。因此，改进堆叠顺序的SACFRP层压板在涉及复杂和不可避免影响的极端负载条件下显示出出色的使用潜力，突出了其在各个行业的广泛适用性。 来源：复合材料力学仿真Composites FEM