【新文速递】2023年12月24日固体力学SCI期刊最新文章

今日更新：Composites Part A: Applied Science and Manufacturing 2 篇，Composites Part B: Engineering 4 篇，Composites Science and Technology 3 篇Composites Part A: Applied Science and ManufacturingElectrostatically self-assembled Fe3O4@SiO2/MXene 3D interlayered structure improves Ku-band microwave absorption efficiency of epoxy-based nanocompositesBin Du, Guodong Zhang, Xianhua Huan, Nanqing Chen, Yushun Zhao, Bin Gao, Liqing Liudoi:10.1016/j.compositesa.2023.107956静电自组装Fe3O4@SiO2/MXene三维层间结构提高了环氧基纳米复合材料的ku波段微波吸收效率It is challenging to develop lightweight and efficient frequency-selective microwave absorption materials due to the trade-off between impedance matching and microwave attenuation ability. This study proposes a multiple heterointerfaces engineering strategy via electrostatically assembling to construct Fe3O4@SiO2/MXene 3D interlayer structure, which fully exerted the synergistic effect of dielectric-magnetic components. The 3D interlayer heterostructure achieves good impedance matching due to electromagnetic coupling and extended microwave propagation path. Simultaneously, massive charge transfer and redistribution at multiple heterointerfaces embedded in this structure boost the polarization relaxation and dielectric loss ability. Consequently, the prepared nanocomposites exhibit remarkable Ku-band microwave absorption efficiency (-60.9 dB at a thickness of 1.0 mm), and have demonstrated valid practicality via Tesla wireless transmission shielding experiments. This study opens exciting possibilities for progress in the structural design, facile preparation and practical application of high-performance Ku-band microwave absorption materials.由于需要在阻抗匹配和微波衰减能力之间进行权衡，开发轻质、高效的频率选择性微波吸收材料是一项具有挑战性的工作。本研究提出了通过静电组装构建Fe3O4@SiO2/MXene三维层间结构的多异质界面工程策略，充分发挥了介电-磁元件的协同效应。三维层间异质结构由于电磁耦合和微波传播路径的延长，实现了良好的阻抗匹配。同时，该结构中嵌入的多个异质界面的大量电荷转移和再分配增强了极化弛豫和介电损耗能力。结果表明，制备的纳米复合材料具有显著的ku波段微波吸收效率(在厚度为1.0 mm时为-60.9 dB)，并通过特斯拉无线传输屏蔽实验证明了其实用性。本研究为高性能ku波段微波吸收材料的结构设计、简易制备和实际应用开辟了令人兴奋的可能性。A novel interfacial modification strategy to improve the wear resistance of PPESK compositesQingguang Bao, Nan Li, Bing Wang, Zhenguo Song, Bin Luo, Shan Cheng, Jingyao Feng, Mengting Li, Wenzhi Li, Yousi Chen, Xigao Jiandoi:10.1016/j.compositesa.2023.107966 一种提高PPESK复合材料耐磨性的新型界面改性策略High-speed and heavy-duty equipment transmission or rotation systems have experienced a significant increase in demand for wear-resistant, self-lubricating resin matrix composites. However, the interfacial interaction between the fillers and the matrix is nonetheless weak due to the fact that the composites are multi-component systems. This weak interaction negatively impacts wear resistance in practical applications. In this paper, a one-step modification method of multiple fillers based on coupling agent compounding by RSM design is proposed. The resulting PPESK composites exhibit excellent thermal (T5wt% = 517.6°C), mechanical (Rockwell hardness = 118 HRR), and wear (ω = 0.72 × 10-15m3/Nm) properties. In addition, PPESK composite bearings were prepared, which showed lightweight advantages, exhibited outstanding tribology performance (μ = 0.079, ω = 0.52×10-15m3/Nm), and demonstrated excellent media resistance (Swelling degree (90 days, 25℃) = 0.45%) in Jet fuel No.3. Therefore, these bearings have great application prospects in the field of aero-engine bearings.高速和重型设备的传动或旋转系统对耐磨、自润滑树脂基复合材料的需求显著增加。然而，由于复合材料是多组分体系，填料与基体之间的界面相互作用仍然很弱。在实际应用中，这种弱相互作用会对耐磨性产生负面影响。本文提出了一种基于RSM设计的偶联剂复合的多填料一步改性方法。得到的PPESK复合材料具有优异的热性能(T5wt% = 517.6°C)、力学性能(洛氏硬度= 118 HRR)和耐磨性能(ω = 0.72 × 10-15m3/Nm)。此外，制备的PPESK复合轴承具有重量轻的优点，具有优异的摩擦学性能(μ = 0.079， ω = 0.52×10-15m3/Nm)，并且在3号喷气燃料中具有优异的耐介质性(膨胀度(90天，25℃)= 0.45%)。因此，这些轴承在航空发动机轴承领域具有很大的应用前景。Composites Part B: EngineeringMechanical behaviour of C-S-H agglomerates at multiscaleZhe Zhang, Qiang Zhu, Guoqing Gengdoi:10.1016/j.compositesb.2023.111140多尺度C-S-H团聚体的力学行为Calcium-Silicate-Hydrate (C-S-H) is the primary binding phase in cement and plays a crucial role in lifecycle performance of concrete. Understanding its multiscale mechanical properties is essential for optimizing its performance. In this study, we employed atomic force microscopy (AFM), nanoindentation and oedometric test to characterize multi-scale mechanical behaviours of C-S-H with different chemical composition and microstructure. Moreover, a calculation framework is used to bridge inter-scale gaps. Our results reveal the complex hierarchical features of C-S-H and its impact on mechanical properties including elastic, plastic, and viscous responses. We also identify the critical role of chemical composition including calcium-to-silica ratio and water content on the observed mechanical behaviours. Additionally, our multiscale model provides a valuable tool for rational design of C-S-H-based materials with tailored mechanical properties at less material cost.水合硅酸钙(C-S-H)是水泥中的主要结合相，对混凝土的生命周期性能起着至关重要的作用。了解其多尺度力学特性对优化其性能至关重要。本研究采用原子力显微镜(AFM)、纳米压痕和尺度测试对不同化学成分和微观结构的C-S-H的多尺度力学行为进行了表征。此外，还采用了一种计算框架来弥补尺度间的差距。我们的研究结果揭示了C-S-H的复杂层次特征及其对力学性能的影响，包括弹性、塑性和粘性响应。我们还确定了化学成分(包括钙硅比和水含量)对观察到的力学行为的关键作用。此外，我们的多尺度模型为以更低的材料成本合理设计具有定制力学性能的c - s - h基材料提供了有价值的工具。Self-alignment of amino-functionalized Ti3C2Tx modified with cerium-doped ZIF-8 nanocontainer towards anti-corrosive/wear and self-healing applicationCan He, Meng Cai, Yu Huang, Xiaoqiang Fan, Minhao Zhudoi:10.1016/j.compositesb.2023.111144 掺杂铈的ZIF-8纳米容器修饰氨基功能化Ti3C2Tx的自对准及抗腐蚀磨损自修复应用Despite Ti3C2Tx MXene has certified tremendous promise for improving the anti-corrosion/wear of epoxy resin, it falls short of matching the protective standards under long-term extreme conditions. Herein, 2-methylimidazole zinc salt ZIF-8 was grown in-situ on amino-functionalized Ti3C2Tx nanosheets and doped with cerium cations (P+-Ti3C2Tx@ZCe). The Ti3C2Tx-based composite was then parallel arranged within epoxy coating utilizing electrophoretic deposition technique to prepare a novel self-healing intelligent coating (PMX@ZCe). The encapsulation structure of P+-Ti3C2Tx@ZCe was investigated by XRD, FTIR, XPS, FE-SEM, TEM, Zeta potential and TG techniques. Furthermore, the corrosion/wear resistance and self-healing performances of PMX@ZCe were discussed detailedly and the strengthening mechanism of P+-Ti3C2Tx@ZCe was revealed. Results indicate that PMX@ZCe maintains the highest |Z|0.01Hz value of 1.24 × 1010 Ω cm2 after 4 weeks of electrochemical test and exhibits excellent self-healing efficiency of 153 % under artificial scratch, which is ascribed to the release of Ce3+/Ce4+ that could form insoluble protective films at the coating/metal interface. The wear rate of PMX@ZCe is 2.29 × 10−5 mm3/N · m about 56 % lower than that of EP. PMX@ZCe possesses satisfactory corrosion/wear protection performance, thanks to the synergy of good interfacial interaction, parallel-aligned barrier effect and active-passive protection. This work provides a new design thinking for MXene-based intelligent protective coatings that can meet the demands of multi-service environments.尽管Ti3C2Tx MXene在提高环氧树脂的抗腐蚀/磨损性能方面有着巨大的潜力，但在长期极端条件下，它无法达到保护标准。本文将2-甲基咪唑锌盐ZIF-8原位生长在氨基功能化的Ti3C2Tx纳米片上，并掺杂铈阳离子(P+-Ti3C2Tx@ZCe)。然后利用电泳沉积技术将ti3c2tx基复合材料平行排列在环氧涂层中，制备了一种新型的自修复智能涂层(PMX@ZCe)。采用XRD、FTIR、XPS、FE-SEM、TEM、Zeta电位和TG等技术研究了P+-Ti3C2Tx@ZCe的包封结构。详细讨论了PMX@ZCe的耐蚀磨损性能和自愈性能，揭示了P+-Ti3C2Tx@ZCe的强化机理。结果表明:经过4周的电化学测试，PMX@ZCe保持了1.24 × 1010 Ω cm2的最高|Z|0.01Hz值，在人为划伤下表现出了153 %的优异自愈效率，这是由于Ce3+/Ce4+的释放可以在涂层/金属界面形成不溶性保护膜。PMX@ZCe的磨损率为2.29 × 10−5 mm3/N·m，比EP低56 %。PMX@ZCe由于良好的界面相互作用、平行排列的屏障效应和主动被动保护的协同作用，具有令人满意的腐蚀/磨损保护性能。该工作为基于mxeni的智能防护涂层提供了一种新的设计思路，可以满足多服务环境的需求。Synchronous manipulation of heterointerfaces and atomic hybrids in bimetallic MAX phase composites for advanced electromagnetic wave absorptionTongtong Xu, Jun Li, Dongpeng Zhao, Zhengyu Zhang, Xilong Li, Juan Cui, Xiping Chen, Guangai Sun, Zhongxiang Zhoudoi:10.1016/j.compositesb.2023.111148 用于先进电磁波吸收的双金属MAX相复合材料异质界面和原子杂化的同步操纵Rational constructing multi-phase interfaces and hetero-substituted sites structures holds extraordinary potential for harnessing tailorable electromagnetic (EM) responses and fascinating EM wave absorption. Herein, a series of new bimetallic MAX phase hybrid composites (Ti1-xVx)2AlCf with diverse dielectric behaviors integration are synthesized via a simple thermally driven gradient sintering strategy, using carbon fiber as the initial carbon source. Their chemical compositions, physical structures and EM properties are studied in detail, focusing on the resultant temperature and M-site vanadium atom substitutional engineering. Specifically, benefiting from the co-boosted interfacial/dipole polarization capabilities caused by the simultaneous manipulation of heterogeneous boundary states and intrinsic dipoles distribution at 1350 °C, the TiVAlCf composite exhibits an ultrahigh minimum reflection loss of −59.13 dB and an effective absorption bandwidth of 4.93 GHz, with a matching thickness of only 1.53 mm. Furthermore, multilayer gradient metamaterial model and a high-temperature tail nozzle model are constructed to further highlight the advanced EM functional application capacity of these MAX-based materials. This work is expected to provide an innovative platform for understanding cooperative multi-dielectric coupling mechanisms in the controllable design of high-efficient hybrid composite absorbers.合理构建多相界面和异取代位结构对于利用可定制的电磁响应和迷人的电磁波吸收具有非凡的潜力。本文以碳纤维为初始碳源，通过简单的热驱动梯度烧结策略，合成了一系列具有不同介电行为集成的新型双金属MAX相杂化复合材料(Ti1-xVx)2AlCf。详细研究了它们的化学组成、物理结构和电磁性能，重点研究了合成的温度和m位钒原子取代工程。具体来说，得益于在1350 °C时同时操纵非均质边界态和本征偶极子分布所引起的界面/偶极子极化能力的共同增强，TiVAlCf复合材料的最小反射损耗为- 59.13 dB，有效吸收带宽为4.93 GHz，匹配厚度仅为1.53 mm。构建了多层梯度超材料模型和高温尾喷嘴模型，进一步凸显了这些max基材料的先进EM功能应用能力。这项工作有望为理解高效混合复合材料吸波器可控设计中的协同多介电耦合机制提供一个创新平台。Dual-functional Polyindole/MXene composite for superior proton storage and corrosion protectionNianting Chen, Jing He, Hongye Xuan, Jing Jin, Ke Yu, Minjie Shi, Chao Yandoi:10.1016/j.compositesb.2023.111145 双功能聚吲哚/MXene复合材料具有优异的质子储存和防腐性能Although Polyindole (Pind) with a π-conjugated polymeric structure has been regarded as a promising organic material, the loosely packed and brittle backbones still hinder its long-term usage stability for various applications. Herein, a novel Pind/MXene composite with a 3D robust architecture has been developed by confining Pind nanoparticles in layered MXene through a simple and mild polymerization approach, which shows unique dual functionality for energy storage and corrosion protection for tcorrosion protection for the first time. On the one hand, the Pind/MXene composite as an electrode material exhibits a rapid, reversible, and stable energy storage behavior with a large proton-storage capacity of 118 mAh g−1 and excellent cycle stability (∼98.2 % after 2000 cycles) in aqueous electrolyte. On the other hand, the Pind/MXene composite as an anti-corrosion additive is introduced into the epoxy resin to achieve a coating, which shows a long-term anti-corrosion performance with a low corrosion rate of 9.17×10−6 mm a−1 and a high corrosion inhibition efficiency of 99.72 %. Furthermore, theoretical calculations prove the obvious electron transfer between Pind and MXene, endowing the Pind/MXene composite with enhanced redox capability, high electrochemical activity and robust structural stability, suggesting its great potential as the bi-functional material for high-performance energy storage and corrosion protection.具有π共轭聚合物结构的聚吲哚(Pind)被认为是一种很有前途的有机材料，但其骨架的松散和脆性仍然阻碍了其在各种应用中的长期使用稳定性。本文通过一种简单而温和的聚合方法，将Pind纳米颗粒限制在层状MXene中，开发出一种具有3D坚固结构的新型Pind/MXene复合材料，该复合材料首次显示出独特的储能和防腐蚀双重功能。一方面，Pind/MXene复合材料作为电极材料表现出快速、可逆和稳定的能量存储行为，具有118 mAh g - 1的大质子存储容量和优异的循环稳定性(循环2000次后为98.2% %)。另一方面，将Pind/MXene复合材料作为防腐添加剂引入到环氧树脂中，形成涂层，具有长期防腐性能，腐蚀速率低，为9.17×10−6 mm a−1，缓蚀效率高达99.72 %。此外，理论计算证明了Pind与MXene之间存在明显的电子转移，使得Pind/MXene复合材料具有较强的氧化还原能力、较高的电化学活性和较强的结构稳定性，表明其具有作为高性能储能和防腐双功能材料的巨大潜力。Composites Science and TechnologyAdditive manufacturing of hybrid piezoelectric/magnetic self-sensing actuator using pellet extrusion and immersion precipitation with statistical modelling optimizationJi Eun Lee, Yu-Chen Sun, Isobel Lees, Hani E. Naguibdoi:10.1016/j.compscitech.2023.110393 基于球团挤压和浸没沉淀的压电/磁混合自传感致动器增材制造及统计建模优化Additive manufacturing is a growing field of fast reliable processing as it can fabricate complex designs, both internally and externally. Multi-stimuli-responsive/-functional polymers can respond to numerous stimuli and execute multiple tasks. A thin flexible hybrid piezoelectric–magnetic self-sensing actuator (HPMSA) is printed utilizing pellet extrusion and immersion precipitation 3D printing (ip3DP) to enhance its performance as both a sensor and an actuator. Utilizing molecular interactions and pores created within the structure, ip3DP showcased a more stable and effective self-sensing actuator than pellet extruded samples. Additionally, HPMSA fabricated using either additive manufacturing methods had a higher overall crystal content of 62.1 % compared to the conventional process of compression molding and mechanical stretching, highlighting its scale-up fabrication whilst promoting piezoelectric crystals. For optimization, kernel ridge regression model was utilized to predict the optimal ip3DP condition, which was experimentally validated. As a vibration damper, the ip3DP HPMSA with an optimized geometry showcased an effective high voltage sensing output of 13 mV/g and maximum weighted damping of 1.8 m/s2, lowering passenger health risks to “caution zone” in high vibration environments. The thin and flexible HPMSA provides understanding into multi-stimuli/-functional materials, simultaneous alignment, and vibration control.增材制造是一个快速可靠的加工领域，因为它可以制造复杂的设计，无论是内部还是外部。多刺 激反应/功能聚合物可以对多种刺 激作出反应并执行多种任务。利用颗粒挤压和浸没沉淀3D打印技术(ip3DP)打印出一种薄型柔性混合压电-磁自传感执行器(HPMSA)，以提高其传感器和执行器的性能。利用分子相互作用和结构内产生的孔隙，ip3DP展示了比颗粒挤出样品更稳定、更有效的自传感驱动器。此外，与传统的压缩成型和机械拉伸工艺相比，使用增材制造方法制造的HPMSA的总晶体含量更高，为62.1 %，突出了其规模化制造，同时促进了压电晶体的发展。为了优化，利用核脊回归模型预测ip3DP的最优条件，并进行了实验验证。作为减震器，经过优化的ip3DP HPMSA的有效高压感应输出为13 mV/g，最大加权阻尼为1.8 m/s2，将乘客的健康风险降低到高振动环境中的“警戒区”。薄而灵活的HPMSA提供了对多刺 激/功能材料，同步校准和振动控制的理解。Effect of fabrication process on the microstructure and mechanical performance of carbon fiber reinforced PEEK composites via selective laser sinteringShuxiang Zhang, Haibin Tang, Danna Tang, Tingting Liu, Wenhe Liaodoi:10.1016/j.compscitech.2023.110396 选择性激光烧结制备工艺对碳纤维增强PEEK复合材料微观结构和力学性能的影响Carbon fiber reinforced PEEK (CF/PEEK) composites via selective laser sintering (SLS) are highly promising technologies for the fabrication of polymer-based components with excellent mechanical behavior. In order to further enhance the performance of SLS-CF/PEEK composites, the mixed CF/PEEK powders are designed and CF/PEEK composites are fabricated via SLS under different fabrication process parameters. The effect of laser power, layer thickness, paving speed, fiber weight fraction, and fiber length on the microstructure and mechanical performance along the powder spreading direction is investigated for SLS-CF/PEEK. The results show that the failure strength of 117 MPa is achieved while the layer thickness of 0.08 mm is adopted. Moreover, the fiber weight fraction of 15% is proven to be suited during the fabrication of SLS-CF/PEEK. The maximum failure strength is better than the results of SLS-CF/PEEK with the fiber weight fraction of 10%, and the average elastic modulus reaches 8400 MPa, which is the best result among those published works. In addition, it is found that the correlation between the failure strength and paving speed is non-monotonic, and the higher strength is obtained when the longer carbon fiber is used. Different from the distinct trends in failure strength, the sensitivity of modulus is much less obvious for SLS-CF/PEEK. This work provides guidance for the printing of high-strength CF/PEEK composites.采用选择性激光烧结(SLS)技术制备碳纤维增强PEEK (CF/PEEK)复合材料是一种具有良好力学性能的聚合物基复合材料。为了进一步提高SLS-CF/PEEK复合材料的性能，设计了CF/PEEK混合粉末，并在不同的制备工艺参数下通过SLS制备了CF/PEEK复合材料。研究了激光功率、铺层厚度、铺层速度、纤维重量分数和纤维长度对SLS-CF/PEEK粉末铺层方向微观结构和力学性能的影响。结果表明:当层厚为0.08 mm时，破坏强度达到117 MPa;此外，在SLS-CF/PEEK的制备过程中，纤维重量分数为15%是合适的。最大破坏强度优于纤维质量分数为10%的SLS-CF/PEEK，平均弹性模量达到8400 MPa，是已发表的研究成果中效果最好的。此外，还发现其破坏强度与铺装速度呈非单调相关关系，且碳纤维使用时间越长强度越高。与破坏强度变化趋势明显不同，SLS-CF/PEEK的模量敏感性不明显。本工作为高强度CF/PEEK复合材料的打印提供了指导。Robot-assisted laser additive manufacturing for high-strength/low-porosity continuous fiber-reinforced thermoplastic compositesZhen Ouyang, Lei Yang, Zhanpeng Pi, Zhihao Wang, Chunze Yan, Yusheng Shidoi:10.1016/j.compscitech.2023.110397 高强度/低孔隙度连续纤维增强热塑性复合材料的机器人辅助激光增材制造Additive manufacturing (AM) of continuous fiber-reinforced thermoplastic composites (CFRTPCs) has become a hot area for both academia and industry. In this paper, a robot-assisted laser additive manufacturing (RLAM) technique is proposed, which involves utilizing a laser beam to heat the filament to a semi-molten state, followed by compacting it with a roller and bonding it layer by layer to create densely structured components. Firstly, an integrated framework of hardware, software, and control systems is presented. Then, the relationship between the processing parameters and the properties of the final specimens was examined. Finally, a process strategy was proposed to improve the forming accuracy. Due to the effective impregnation of continuous carbon fibers, the printed CFRTPCs using the LRAM process exhibit comparatively low porosity and superior mechanical performance. Specifically, the flexural strength, flexural modulus, and interlayer shear strength reached 584 MPa, 43.7 GPa, and 28.0 MPa, respectively. The prepared specimens boast a porosity of 0.19%, approaching levels achieved through autoclave processes. In addition, it was found that the dynamic offset of the yaw axis could be utilized to correct the deviation of the actual forming path due to the pultrusion force, thus making the position of the towpreg under the rollers controllable and improving the accuracy of the parts. This new method combines the advantages of industrial robotics and laser&roller-based continuous fiber additive manufacturing processes to enable high-performance additively manufactured large and complex CFRTPCs, which shows great potential for printing lightweight structures in the rail transit and aerospace industries.连续纤维增强热塑性复合材料(cfrtpc)的增材制造(AM)已成为学术界和工业界的热门领域。本文提出了一种机器人辅助激光增材制造(RLAM)技术，该技术包括利用激光束将灯丝加热到半熔融状态，然后用滚轮压实并逐层粘合以创建密集结构的部件。首先，给出了硬件、软件和控制系统的集成框架。然后，研究了工艺参数与最终试样性能的关系。最后，提出了提高成形精度的工艺策略。由于连续碳纤维的有效浸渍，采用LRAM工艺打印的cfrtpc具有相对较低的孔隙率和优越的力学性能。其中，抗弯强度、抗弯模量和层间抗剪强度分别达到584 MPa、43.7 GPa和28.0 MPa。制备的试样孔隙率为0.19%，接近通过高压灭菌工艺达到的水平。此外，还发现可以利用横摆轴的动态偏移量来修正由于拉挤力造成的实际成形路径偏差，从而使托辊下的托辊位置可控，提高了零件的精度。这种新方法结合了工业机器人技术和基于激光和滚轴的连续纤维增材制造工艺的优势，可以实现高性能增材制造大型复杂cfrtpc，这在轨道交通和航空航天工业的轻型结构打印中显示出巨大的潜力。来源：复合材料力学仿真Composites FEM