【新文速递】2025年9月4日固体力学SCI期刊最新文章_ACT_Mechanical_Fluent

【新文速递】2025年9月7日复合材料SCI期刊最新文章

今日更新：Composite Structures 1 篇，Composites Part A: Applied Science and Manufacturing 1 篇，Composites Part B: Engineering 5 篇，Composites Science and Technology 2 篇Composite StructuresPhysical-data driven hybrid modelling for structural optimization of buckling resistance of wind turbine blades bio-inspired by beetle elytronShenglin Dai, Yuhang Wang, Xuhong Zhou, Yingyi Liu, Xiaoming Zhangdoi:10.1016/j.compstruct.2025.119634甲虫鞘翅仿生风力发电机叶片抗屈曲结构优化的物理数据驱动混合建模Wind turbine blades, designed as thin-walled hollow sections, are prone to compressive buckling, due to the Brazier effect caused by curvature that arises from flapwise bending deformations. To address this issue, this study proposes a beetle elytron-inspired trabecular core, consisting of thin-walled trabeculae with grid webs and chamfers, providing superior compressive performance compared to conventional web cores. However, the structural optimization for compressive strength (σu ) of trabecular cores remains unexplored. Three dimensionless trabecular-related parameters, including the ratios of trabecular radius to cellular length (η), chamfer radius to trabecular radius (ξt ) and core height to core thickness (β), were investigated through 32 sets of coupon tests, identifying local buckling as the preferred failure mode. The boundary condition, identified through a physical-data-driven hybrid modelling that combines the physical buckling mode with a data-driven regression model trained on experimental results, was incorporated into the development of optimization functions. Finally, the optimization results were validated using experimental data and numerical simulations, and applied to identify the optimal combination of trabecular-related parameters with various radius-to-thickness ratio (D) for the sectional design of trabecular cores in wind turbine blades.风力涡轮机叶片被设计为薄壁空心截面，由于由扑翼弯曲变形产生的曲率引起的火盆效应，容易产生压缩屈曲。为了解决这个问题，本研究提出了一种甲虫鞘翅启发的小梁核心，由带有网格网和倒角的薄壁小梁组成，与传统的腹板核心相比，它具有优越的压缩性能。然而，结构优化的抗压强度(σu )的小梁岩心仍未被探索。三维小梁相关参数，包括小梁半径与胞长之比（η）、倒角半径与小梁半径之比（ξ） )和岩心高度/岩心厚度（β），通过32组联片试验，确定局部屈曲是首选破坏模式。该边界条件通过物理-数据驱动混合模型确定，该模型将物理屈曲模式与基于实验结果训练的数据驱动回归模型相结合，并将其纳入优化函数的开发中。最后，通过实验数据和数值模拟对优化结果进行验证，并将优化结果应用于风电叶片小梁芯截面设计中不同半径厚比(D)下小梁相关参数的最优组合。Composites Part A: Applied Science and ManufacturingSynergistic effect of Li microalloying and pre-strain on manipulating precipitation behaviors in aluminum matrix compositesHaodong Xu, Genlian Fan, Kang Wang, Bo Cui, Zhanqiu Tan, Zhiqiang Li, Di Zhangdoi:10.1016/j.compositesa.2025.109285 Li微合金化和预应变对铝基复合材料析出行为的协同作用To improve the strength-ductility synergy of CNT/Al-Cu-Mg composites, we propose a strategy involving Li addition to modulate precipitation behaviors. In T6 temper, CNT/Al-Cu-Mg composites show uniform distribution of G.P. zones. However, Li addition will suppress precipitation of G.P. zones but promote formation of clusters by capturing quenched-in excess vacancies, leading to increased precipitation hardening. In T8 temper, pre-strain is found to promote growth of G.P. zones along dislocations, leading to non-uniform distribution of them in CNT/Al-Cu-Mg composites. Although higher forest dislocation strengthening is achieved in T8-CNT/Al-Cu-Mg composites, the precipitation hardening is weakened. To realize excellent precipitation hardening in T8 temper, the synergistic effect between Li microalloying and dislocations is utilized to regulate precipitation behaviors in CNT/Al-Cu-Mg-Li composites, resulting in more uniformly distributed G.P. zones. As a result, the T8-CNT/Al-Cu-Mg-Li composites achieves a better strength-ductility balance, with a yield strength of 594.67 ± 3.89 MPa and an elongation of 7.93 ± 0.43 %. This performance stems from best synergistic combination of precipitation hardening and forest dislocation strengthening. Our findings offer a viable approach for designing nanoprecipitate-strengthened composites with excellent mechanical properties.为了提高CNT/Al-Cu-Mg复合材料的强度-延性协同效应，我们提出了一种涉及Li添加的策略来调节沉淀行为。在T6回火条件下，CNT/Al-Cu-Mg复合材料的gp区分布均匀。然而，Li的加入会抑制gp区析出，但通过捕获淬火过量的空位促进团簇的形成，导致析出硬化增加。在T8回火条件下，预应变促进了位错沿线gp区生长，导致其在CNT/Al-Cu-Mg复合材料中的分布不均匀。虽然T8-CNT/Al-Cu-Mg复合材料具有较高的森林位错强化，但沉淀硬化被减弱。为了在T8回火条件下实现优异的析出硬化，利用Li微合金化和位错之间的协同效应调节CNT/Al-Cu-Mg-Li复合材料的析出行为，使gp区分布更加均匀。结果表明，T8-CNT/Al-Cu-Mg-Li复合材料的屈服强度为594.67 ± 3.89 MPa，伸长率为7.93 ± 0.43 %，达到了较好的强度-塑性平衡。这种性能源于沉淀硬化和森林位错强化的最佳协同组合。我们的发现为设计具有优异力学性能的纳米沉淀增强复合材料提供了一种可行的方法。Composites Part B: EngineeringBiomimetic 3D printed Herringbone-Bouligand cementitious composites for ultra-high impact performanceGuoqiang Du, Xiaowei Deng, Ye Qiandoi:10.1016/j.composites b.2025.112993 具有超高冲击性能的仿生3D打印人字形-布利甘胶凝复合材料Nature can create tough and lightweight materials under specific conditions. Learning from nature and developing novel biomimetic structures within synthetic materials is crucial for advancing impact-resistant materials. In this work, inspired by the dactyl club of mantis shrimp, we integrate Herringbone and Bouligand structures to produce 3D printed strain-hardening cementitious composites (SHCC) with ultra-high impact performance. Through the application of 3D concrete printing, SHCC filaments and fibers are arranged coaxially and form a Herringbone-Bouligand structure. The results indicated that the Herringbone-Bouligand structure significantly enhanced the impact performance of SHCC. The Herringbone-Bouligand structure exhibited the highest specific absorption energy of 843.3±45.19 mJ/cm3 and a specific impact force of 23.8±1.17 N/cm3. Its specific absorption energy was 290.8 times greater than that of plain concrete (2.9±0.08 mJ/cm3), while its specific impact force was 7.0 times higher than that of plain concrete (3.4±0.05 N/cm3). The toughening mechanis m is attributed to the sinusoidal arrangement of the SHCC filaments, which absorbs the impact force through spring deformation, and the Bouligand arrangement, which promotes crack twisting. This combination allows the structure to better absorb and release energy. The Herringbone-Bouligand structure offers a promising solution for protective applications in harsh environments and provides valuable insights for developing impact-resistant, lightweight cementitious materials through biomimetic strategies.大自然可以在特定条件下创造出坚韧而轻便的材料。从自然中学习，在合成材料中开发新的仿生结构是推进抗冲击材料的关键。在这项工作中，我们受到螳螂虾的dactyl俱乐部的启发，将Herringbone和Bouligand结构结合在一起，生产出具有超高冲击性能的3D打印应变硬化胶凝复合材料（SHCC）。通过应用3D混凝土打印技术，将SHCC细丝和纤维同轴排列，形成人字形-布利甘结构。结果表明，人字形- bouligand结构显著提高了SHCC的冲击性能。人字形-布利甘结构的比吸收能最高，为843.3±45.19 mJ/cm3，比冲击力为23.8±1.17 N/cm3。比吸收能是素混凝土的290.8倍（2.9±0.08 mJ/cm3），比冲击力是素混凝土的7.0倍（3.4±0.05 N/cm3）。其增韧机制主要是由于SHCC细丝的正弦分布（通过弹簧变形吸收冲击力）和Bouligand分布（促进裂纹扭转）。这种组合使结构能够更好地吸收和释放能量。Herringbone-Bouligand结构为恶劣环境下的防护应用提供了一种很有前途的解决方案，并通过仿生策略为开发抗冲击、轻质胶结材料提供了宝贵的见解。Asymmetric hierarchically structured composite aerogels with enhanced dual-spectral selectivity for efficient radiative coolingXiaohai Bu, Liyi Chai, Yanmei Liu, Bing Feng, Tao Lu, Mingxin Feng, Yuming Zhoudoi:10.1016/j.composites b.2025.112988具有增强双光谱选择性的非对称分层结构复合气凝胶，用于高效辐射冷却Passive radiative cooling (PRC) has emerged as a promising zero-energy cooling technology for achieving global carbon neutrality goals. However, conventional PRC materials face persistent challenges including seasonal overcooling effects and limited cooling efficiency due to unavoidable solar absorption and thermal conduction losses. In this work, we develop an asymmetric PLA/SiO2 composite aerogel with hierarchical porous structure through a facile water-induced phase separation strategy, where gravity-driven SiO2 particle sedimentation creates enhanced dual-spectral selectivity on the aerogel’s bottom surface. The composite aerogel integrates superior radiative cooling and thermal insulation functions in a single design, simultaneously achieving ∼97.1% solar reflectance, ∼95.6% atmospheric window emissivity, and ultralow thermal conductivity (0.032 W m-1 K-1). Outdoor measurements confirm effective cooling performance with temperature drops of ∼8.83°C under direct sunlight and ∼5.66°C in cloudy conditions. Moreover, the aerogel exhibits retained self-cleaning functionality and optical stability after various environmental durability tests, adapting to harsh real-world applications. Energy consumption simulations demonstrate that the aerogels have great potential of year-around energy saving and CO2 reduction in China for energy-efficient building models integrated with aerogels on roof and walls. This study pioneers the creation of biodegradable PRC materials that combine building thermal management with environmental sustainability, thereby propelling the advancement of next-generation energy-efficient buildings.被动辐射冷却（PRC）已成为实现全球碳中和目标的一种有前途的零能耗冷却技术。然而，传统的PRC材料面临着持续的挑战，包括季节性过冷效应和由于不可避免的太阳能吸收和热传导损失而导致的有限的冷却效率。在这项工作中，我们通过简单的水诱导相分离策略开发了具有分层多孔结构的不对称PLA/SiO2复合气凝胶，其中重力驱动的SiO2颗粒沉积在气凝胶底表面产生了增强的双光谱选择性。复合气凝胶在单一设计中集成了卓越的辐射冷却和隔热功能，同时实现了~ 97.1%的太阳反射率，~ 95.6%的大气窗口发射率和超低导热系数（0.032 W m-1 K-1）。室外测量证实了有效的冷却性能，在阳光直射下温度下降~ 8.83°C，在多云条件下温度下降~ 5.66°C。此外，在各种环境耐久性测试后，气凝胶显示出保持自清洁功能和光学稳定性，适应恶劣的实际应用。能耗模拟结果表明，在中国，气凝胶在屋顶和墙壁上集成气凝胶的节能建筑模型具有巨大的全年节能和二氧化碳减排潜力。这项研究开创了可生物降解PRC材料的创造，将建筑热管理与环境可持续性相结合，从而推动了下一代节能建筑的发展。Multifunctional Polydimethylsiloxane Composites with Interpenetrating Conductive Segregated Network for Exceptional Electromagnetic Interference ShieldingWeirui Zhang, Zhongjie He, Sijie Yu, Yangyang Xin, Fangfang Su, Dongdong Yao, Yudeng Wang, Yaping Zhengdoi:10.1016/j.composites b.2025.112989具有互穿导电隔离网络的多功能聚二甲基硅氧烷复合材料用于特殊的电磁干扰屏蔽Polydimethylsiloxane (PDMS) segregated composites incorporating MXene as a conductive filler were demonstrated significant advancements in electromagnetic interference (EMI) shielding applications. However, the EMI shielding effectiveness (EMI SE) at low conductive filler contents remains a challenge that requires further optimization. In this work, PDMS@MXene microspheres were prepared via electrostatic interactions and then integrated with silver nanowires (AgNWs) to construct a PDMS@MXene/AgNWs interpenetrating conductive network. Subsequently, the PDMS@MXene/AgNWs (PMA) composites were fabricated by infiltrating the PDMS matrix into the interpenetrating network. Within the PMA conductive composites, MXene nanosheets formed a continuous conductive network, while AgNWs served as bridging connectors to enhance charge transfer efficiency. Notably, the PMA composite at low conductive filler loading of 7.12 wt% achieved an electrical conductivity of 118.60 S·m-1 and an impressive EMI shielding efficiency/thickness (EMI SE/d) of 39.33 dB·mm-1. Furthermore, the PMA composite exhibited exceptional EMI shielding stability under various harsh environments, including extreme temperatures and acidic/basic chemical environments. Additionally, the photothermal conversion performance of the PMA composite and the capacitive sensing performance of sensors based on PMA composites highlighted their potential applications in body temperature regulation and information trans mission. This work provides a promising approach for designing PDMS-based multifunctional EMI shielding composites, which hold great promise for wearable electronic devices.以MXene为导电填料的聚二甲基硅氧烷（PDMS）分离复合材料在电磁干扰（EMI）屏蔽应用方面取得了重大进展。然而，在低导电填料含量下的电磁干扰屏蔽效率（EMI SE）仍然是一个需要进一步优化的挑战。在这项工作中，通过静电相互作用制备PDMS@MXene微球，然后与银纳米线（AgNWs）集成，构建PDMS@MXene/AgNWs互穿导电网络。随后，通过将PDMS基体渗透到互穿网络中制备PDMS@MXene/AgNWs （PMA）复合材料。在PMA导电复合材料中，MXene纳米片形成连续的导电网络，而AgNWs充当桥接连接器以提高电荷转移效率。值得注意的是，在7.12 wt%的低导电填料负载下，PMA复合材料的电导率为118.60 S·m-1， EMI屏蔽效率/厚度（EMI SE/d）为39.33 dB·mm-1。此外，PMA复合材料在各种恶劣环境下（包括极端温度和酸性/碱性化学环境）都表现出优异的电磁干扰屏蔽稳定性。此外，PMA复合材料的光热转换性能和基于PMA复合材料的传感器的电容传感性能突出了其在体温调节和信息传输方面的潜在应用。这项工作为设计基于pdms的多功能电磁干扰屏蔽复合材料提供了一种有希望的方法，该复合材料在可穿戴电子设备中具有很大的前景。3D-printed Boron Nitride Nanotube-reinforced Polymer-derived Ceramics with Reduced Porosity and Enhanced StrengthA. Sohrabi-Kashani, H. Yazdani Sarvestani, T. Lacelle, Y. Martinez-Rubi, S. Zou, A. Robitaille, H. Lavoie, M.B. Jakubinek, B. Ashrafidoi:10.1016/j.composites b.2025.112991 3d打印氮化硼纳米管增强聚合物衍生陶瓷，具有降低孔隙率和增强强度This study introduces a novel approach for fabricating ceramic structures using a silicon oxycarbide (SiOC) preceramic resin enhanced with boron nitride nanotubes (BNNTs) through digital light processing (DLP). These ceramics feature intricate shapes and high-resolution triply periodic minimal surface (TPMS) architectures with low relative density structures but dense (low-porosity) ceramic features. Incorporating BNNTs at low concentrations (0.2, 0.4, and 0.8 wt%) into a commercially available SiOC precursor, which was then formulated to for DLP printing, resulted in a significant reduction in porosity and improved mechanical performance in the polymer-derived SiOC. This combined effect preserved original designs with higher accuracy and significantly enhanced energy absorption and compressive strength of the 3D-printed ceramics compared to baseline SiOC lattices, by factors of 4.4 and 6 times, respectively. Characterization revealed modest changes in storage and loss modu li with BNNT addition, while the BNNT-modified formulation exhibited excellent printability, and ceramic density measurements confirmed a slight increase with BNNT incorporation. This innovative approach, paired with the versatility of additive digital manufacturing, enables the creation of customizable, bio-inspired ceramic structures with tunable properties for aerospace, energy, and biomedical applications.本研究介绍了一种利用氮化硼纳米管（bnnt）增强碳化硅（SiOC）预陶瓷树脂通过数字光处理（DLP）制备陶瓷结构的新方法。这些陶瓷具有复杂的形状和高分辨率的三周期最小表面（TPMS）结构，具有低相对密度结构但致密（低孔隙率）的陶瓷特征。将低浓度（0.2、0.4和0.8 wt%）的bnnt加入到市购的SiOC前驱体中，然后将其配制成用于DLP印刷，从而显著降低了聚合物衍生的SiOC的孔隙率，提高了其机械性能。与基线SiOC晶格相比，这种综合效应以更高的精度保留了原始设计，并显著提高了3d打印陶瓷的能量吸收和抗压强度，分别提高了4.4倍和6倍。表征表明，加入BNNT后，存储模量和损耗模量发生了适度的变化，而BNNT修饰的配方表现出优异的印刷性能，陶瓷密度测量证实，加入BNNT后，陶瓷密度略有增加。这种创新的方法与增材数字化制造的多功能性相结合，可以为航空航天、能源和生物医学应用创建具有可调特性的可定制生物陶瓷结构。CoF2 nanodots embedded N-doped carbon polyhedrons as a multifunctional interlayer for dendrite-free and stable lithium-sulfur batteriesZiheng Zhang, Daiqian Chen, Hesheng Yu, Xinsheng Li, Yue Wang, Jinri Huang, Yu Wu, Yuanfu Chendoi:10.1016/j.composites b.2025.113002 CoF2纳米点嵌入n掺杂碳多面体作为无枝晶稳定锂硫电池的多功能中间层The shuttle effect of lithium polysulfides (LiPSs) and the uncontrolled growth of lithium dendrites remain formidable barriers to the large-scale commercialization of lithium-sulfur (Li–S) batteries. In order to simultaneously address both issues, herein, for the first time, we present MOF-derived CoF2 nanodots embedded nitrogen-doped carbon polyhedrons (CoF2@NCP) as a multifunctional separator interlayer. The conductive NCP and in-situ grown CNTs provide efficient electron transfer network. Most importantly, the homogeneously distributed polar and lithiophilic CoF2 nanodots can not only strongly chemisorb and effectively catalytically convert LiPSs to suppress shuttle effect, but also uniformly regulate the Li-ion flux to realize s mooth stripping/plating, thus inhibiting dendrite growth. Benefiting from the merits, the Li||Li symmetric cells with CoF2@NCP sustain stable cycling for 1000 h at 1 mA cm-2 and remain stable at 4 mA cm-2; the Li–S full cells with CoF2@NCP deliver an outstanding initial capacity of 1514.8 mAh g-1 at 0.2 C, retain 935.2 mAh g-1 after 150 cycles, and exhibit a high capacity of 753.9 mAh g-1 at a high rate of 4 C. In-situ Raman spectroscopy and Li2S6 adsorption tests confirm effective LiPSs immobilization and accelerated redox kinetics. This work offers a rational strategy for designing multifunctional interlayers for dendrite-free and stable Li–S batteries.锂多硫化物（LiPSs）的穿梭效应和锂枝晶不受控制的生长仍然是锂硫（li -硫）电池大规模商业化的巨大障碍。为了同时解决这两个问题，在这里，我们首次提出了mof衍生的CoF2纳米点嵌入氮掺杂碳多面体（CoF2@NCP）作为多功能分隔层。导电NCP和原位生长的碳纳米管提供了高效的电子转移网络。最重要的是，均匀分布的极性亲锂CoF2纳米点不仅能强化学吸附和有效催化转化LiPSs，抑制穿梭效应，还能均匀调节锂离子通量，实现顺利剥离/镀，从而抑制枝晶生长。利用上述优点，含有CoF2@NCP的Li||Li对称电池在1ma cm-2下可稳定循环1000 h，在4ma cm-2下仍能保持稳定；含有CoF2@NCP的锂-s电池在0.2℃时的初始容量为1514.8 mAh g-1，在150次循环后保持95.2 mAh g-1，在4℃的高速率下显示753.9 mAh g-1的高容量。原位拉曼光谱和Li2S6吸附测试证实了有效的lips固定和加速氧化还原动力学。这项工作为设计无枝晶稳定锂电池的多功能中间层提供了一种合理的策略。Composites Science and TechnologyA SCA-based Concurrent Multiscale Thermo-mechanical Model for Transient Thermal Ablative and Mechanical Damage Properties of SiFPRCsShuo Cao, Yiqi Mao, Wenyang Liu, Shujuan Houdoi:10.1016/j.compscitech.2025.111368 基于sca的sifrcs瞬态热烧蚀和力学损伤的多尺度热力学模型Accurate numerical simulation of the ablation process in silica fiber-reinforced phenolic resin composites (SiFPRCs) is critical for advanced thermal protection applications. However, conventional dual-scale finite element (FE2) methods incur prohibitive computational costs when capturing the strongly nonlinear responses induced by multiple dissipative mechanis ms during thermochemical ablation. To address this issue, we propose a dual-scale framework (FEM-SCA) that integrates the finite element method (FEM) with self-consistent clustering an alysis (SCA). At the macroscopic level, FEM captures the overall thermo-mechanical response, while nested mesoscale representative volume elements (RVEs) are solved using the SCA to capture dissipative processes, including heat radiation, phenolic resin pyrolysis, thermal blocking, silica fiber phase transitions, carbon-silicon reaction, and mechanical degradation. A staggered incremental scheme enables efficient transient coupling across scales. Validation against FE2 benchmarks demonstrates that FEM-SCA reproduces thermal conduction and pyrolysis behavior with < 5% error, while reducing computational cost by over two orders of magnitude. The proposed framework offers a computationally efficient and physically grounded approach for simulating ablation in woven composites.硅纤维增强酚醛树脂复合材料（sifprc）烧蚀过程的精确数值模拟对于先进的热防护应用至关重要。然而，传统的双尺度有限元（FE2）方法在捕获热化学烧蚀过程中由多种耗散机制引起的强烈非线性响应时，会产生令人望而却步的计算成本。为了解决这一问题，我们提出了一种双尺度框架（FEM-SCA），该框架将有限元方法（FEM）与自洽聚类分析（SCA）相结合。在宏观层面上，FEM捕获了整体的热-力学响应，而嵌套的中尺度代表性体积元（RVEs）则使用SCA求解，以捕获耗散过程，包括热辐射、酚醛树脂热解、热阻塞、硅纤维相变、碳-硅反应和机械降解。交错增量方案使跨尺度的有效瞬态耦合成为可能。对FE2基准的验证表明，FEM-SCA再现热传导和热解行为的误差小于5%，同时将计算成本降低了两个数量级以上。所提出的框架提供了一种计算高效和物理接地的方法来模拟编织复合材料的烧蚀。Elevating the Performance of Bio-based Epoxidized Natural Rubber/Natural Rubber/Silica Nanocomposites via Strategic Manipulation of Silica Phase-Selective DistributionZixuan Wang, Ruoyu Wang, Yanguo Li, Yanjin Zhu, Weixiao Song, Xiaohui Wu, Guo-Hua Hu, Liqun Zhangdoi:10.1016/j.compscitech.2025.111372 通过调控二氧化硅相选择分布提高生物基环氧化天然橡胶/天然橡胶/二氧化硅纳米复合材料的性能Epoxidized natural rubber (ENR) combines the excellent elasticity and mechanical strength of natural rubber (NR) with the polarity, oil resistance, and wet skid resistance imparted by the introduction of epoxy groups. In particular, ENR show strong affinity with silica, endowing it great development potential in the field of green tires. However, in the silica-based composite system, ENR and NR is incompatible and forms a phase-separated structure, hindering the performance improvement of the composite. In this work, silane coupling agent bis(γ-triethoxysilylpropyl) tetrasulfide (TESPT) was pre-incorporated into NR to prepare NR-TESPT masterbatch to improve the affinity between the NR and silica. NR-TESPT masterbatch with different TESPT content were prepared and mixed with ENR and silica to fabricate ENR/NR/silica (ENR/NR-xT) composites. The phase-selective dispersion mechanis m of silica in the ENR and NR matrix was observed by AFM-Nano-FTIR and TEM. The results shows that both the ENR phase and the NR-TESPT phase can form strong coupling interactions with silica. And a double-coupling structure of epoxy-silanol and silanol-TESPT-double bond is formed to enhance the uniform silica dispersion and the comprehensive properties of composites. The ENR/NR-4T composite exhibits significant performance improvements compared to the NR-6T composite, with a 115% increase in anti-wet skid performance, a 30.9% increase in tensile strength, and a 61.9% increase in tear strength.环氧化天然橡胶（ENR）将天然橡胶（NR）的优异弹性和机械强度与引入环氧基团所赋予的极性，耐油性和湿滑性相结合。特别是ENR与二氧化硅具有较强的亲和性，在绿色轮胎领域具有很大的发展潜力。但在硅基复合体系中，ENR与NR不相容，形成相分离结构，阻碍了复合材料性能的提高。本研究将硅烷偶联剂双（γ-三乙氧基硅丙基）四硫醚（TESPT）预掺入NR中制备NR-TESPT母粒，以提高NR与二氧化硅的亲合力。制备了不同含量的NR-TESPT母粒，并与ENR和二氧化硅混合，制备了ENR/NR/二氧化硅（ENR/NR- xt）复合材料。采用原子力显微镜-纳米傅里叶变换红外光谱（afm）和透射电镜（TEM）观察了二氧化硅在ENR和NR基体中的相选择分散机制。结果表明，ENR相和NR-TESPT相均能与二氧化硅形成强耦合相互作用。形成了环氧-硅醇和硅醇- tespt -双键的双偶联结构，增强了二氧化硅的均匀分散和复合材料的综合性能。与NR-6T复合材料相比，ENR/NR-4T复合材料的性能得到了显著改善，抗湿滑性能提高了115%，抗拉强度提高了30.9%，撕裂强度提高了61.9%。来源：复合材料力学仿真Composites FEM

【新文速递】2025年9月4日固体力学SCI期刊最新文章

International Journal of Solids and Structures

Journal of the Mechanics and Physics of Solids

Mechanics of Materials

Thin-Walled Structures

【新文速递】2025年9月7日复合材料SCI期刊最新文章