Advanced Industrial and Engineering Polymer Research最新文献_第2页

Dual interface strategies using carbon dots for fabricating thermally conductive polymers by pyrrhotite and waste plastics 利用碳点制备磁黄铁矿和废塑料导热聚合物的双界面策略

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2026-01-01 DOI: 10.1016/j.aiepr.2025.09.006

Zhiyi Wang , Jianchao Wang , Hui Wang , Hongru Jiang , Chongqing Wang , Yingshuang Zhang , Hongshuai Hou , Lingyue Zhang

The thermally conductive polymers used in modern microelectronic devices have been a hot topic around the world. Herein, we proposed a novel dual interface strategy to fabricate thermally conductive polymer with waste plastics and pyrrhotite (Pyr), and decipher the interface coupling mechanisms facilitated by carbon dots (CDs). First, through hot-pressing, the polymer composites (ABS/S@CD-Pyr) were fabricated using waste poly(acrylonitrile-co-butadiene-co-styrene) (ABS) and Pyr. The thermal conductivity (TC) of polymer composites was affected by various parameters, and the highest TC reached 1.68 W/m·K. Second, the interfacial coupling of ABS/S@CD-Pyr was elucidated via the systematical characterization and molecular dynamics (MD) simulation, and the chemical coupling (C–S and CS bonds) and nanoscale effects of CDs were mainly responsible for the reduced interfacial thermal resistance and the enhanced thermal conductivity. Third, the other critical properties of polymer composites were estimated, and ABS/S@CD-Pyr possessed good electrical resistivity, electromagnetic interference shielding performance, thermal stability, mechanical strength, thermal cycling, and water resistance. Finally, the applicability of proposed strategy was tested with various types of waste plastics, and in most cases, the TC of polymer composites was above 1.60 W/m·K. These findings would provide valuable insights into the high-value resource utilization of waste plastics and Pyr tailings.

导热聚合物在现代微电子器件中的应用已成为国内外研究的热点。在此，我们提出了一种新的双界面策略，以废塑料和磁黄铁矿（Pyr）制备导热聚合物，并解释了碳点（CDs）促进的界面耦合机制。首先，以废聚丙烯腈-共丁二烯-共苯乙烯（ABS）和吡啶（Pyr）为原料，通过热压法制备聚合物复合材料（ABS/S@CD-Pyr）。聚合物复合材料的导热系数（TC）受各种参数的影响，最高的TC可达1.68 W/m·K。其次，通过系统表征和分子动力学（MD）模拟阐明了ABS/S@CD-Pyr的界面偶联，CDs的化学偶联（C-S键和CS键）和纳米级效应是降低界面热阻和提高导热系数的主要原因。第三，对聚合物复合材料的其他关键性能进行了评估，ABS/S@CD-Pyr具有良好的电阻率、电磁干扰屏蔽性能、热稳定性、机械强度、热循环性能和耐水性。最后，对不同类型的废塑料进行了适用性测试，在大多数情况下，聚合物复合材料的TC都在1.60 W/m·K以上。这些发现将为废塑料和尾矿的高价值资源化利用提供有价值的见解。

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引用次数: 0

Cryo-polymerization-assisted additive manufacturing of hierarchical porous epoxy framework for multifunctional protection 低温聚合辅助增材制造多级多孔环氧树脂多功能防护骨架

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2026-01-01 DOI: 10.1016/j.aiepr.2025.10.003

Zhenyu Wang , Chenxi Hua , Tao Zhang , Peng Chen , Xinyu Song , Shixuan Xu , Ming Li , Jiehao Zhang , Yuyang Lu , Ling Tu , Boxian Liu , Xi Shen , Congbin Yin , Yu Liu

Electronic components are highly susceptible to harsh environmental conditions, underscoring the urgent demand for multifunctional protective materials. In this study, we propose a cryo-polymerization-assisted additive manufacturing technique to fabricate hierarchically porous epoxy frameworks with superior electronic protection capabilities. A room-temperature-processable aqueous ink system incorporating carbon nanofibers and waterborne epoxy is developed, enabling the precise additive manufacturing of 3D lattice structures featuring well-ordered macroscale pores. Subsequent cryo-polymerization process further generates microporous networks within the additively manufactured filaments, yielding a hierarchical architecture with multiscale porosity. This unique structural design endows the resulting composite with remarkable multifunctionality, combining impact absorption (86 %), fracture toughness (1.41 MPa·m^1/2), and thermal insulation (0.13 W·m⁻¹·K⁻¹). The composite maintains over 90 % strength under harsh conditions while demonstrating strong hydrophobicity (water contact angle of 120°) and superior EMI shielding effectiveness (>40 dB). This work establishes a versatile platform for high-performance protective devices and paves the way for next-generation smart materials in advanced electronic protection systems.

电子元器件极易受到恶劣环境条件的影响，对多功能防护材料的需求十分迫切。在这项研究中，我们提出了一种低温聚合辅助增材制造技术来制造具有优越电子保护能力的分层多孔环氧树脂框架。开发了一种含碳纳米纤维和水性环氧树脂的室温可加工水性油墨系统，实现了具有有序宏观孔隙的三维晶格结构的精确增材制造。随后的低温聚合过程进一步在增材制造的长丝中产生微孔网络，产生具有多尺度孔隙度的分层结构。这种独特的结构设计使复合材料具有显著的多功能性，结合了冲击吸收（86%），断裂韧性（1.41 MPa·m1/2）和绝热性（0.13 W·m−1·K−1）。该复合材料在恶劣条件下保持90%以上的强度，同时表现出强疏水性（水接触角120°）和卓越的电磁干扰屏蔽效果（>40 dB）。这项工作为高性能保护装置建立了一个通用平台，并为先进电子保护系统中的下一代智能材料铺平了道路。

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引用次数: 0

Robust structure and superhydrophobic PLA/ZrO2 fiber aerogel for daytime radiative cooling 坚固的结构和超疏水PLA/ZrO2纤维气凝胶用于日间辐射冷却

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2026-01-01 DOI: 10.1016/j.aiepr.2025.10.001

Shuo Zhang , Qian Zhang , Xiaowei Huang , Xin Ning , Jinfa Ming

Daytime radiative cooling as an environmentally energy-saving strategy, achieves cooling without any power consumption by reflecting sunlight and radiating energy to outer space. In our work, an eco-friendly and degradable poly (lactic acid) (PLA) fibers derived from discarded nonwovens are used to prepare aerogels by combing with ZrO₂ nanoparticles with silane coupling agent (VTMS) crosslinking. The composite aerogel with low density (26.3–30.7 mg/cm³) exhibits high solar reflectance (77 %), emissivity (94.31 %), low thermal conductivity, and high compressive stress (9.0 kPa under 60 % compressive strain). Thermal insulation test demonstrates that the aerogel can achieve temperature drops of 31.3 °C and 41.4 °C under the temperature of heating table 60 °C and 80 °C. Radiative cooling test shows aerogel with 15 wt% ZrO₂ can achieve a temperature drop of 9.14 °C during daytime. Meanwhile, the aerogel cooler presents excellent superhydrophobic (150°), self-cleaning performance, and cyclic compression performance. This findings will promote the field of passive radiative cooling toward a greener and more sustainable direction.

白天辐射制冷作为一种环保节能策略，通过反射太阳光，将能量辐射到外层空间，实现不耗电的制冷。在我们的工作中，利用一种从废弃非织造布中提取的环保可降解聚乳酸（PLA）纤维，通过与具有硅烷偶联剂（VTMS）交联的ZrO2纳米颗粒结合，制备气凝胶。该复合气凝胶具有低密度（26.3 ~ 30.7 mg/cm3）、高太阳反射率（77%）、高发射率（94.31%）、低导热系数和高压应力（60%压应变下为9.0 kPa）等特点。保温试验表明，在加热表温度为60℃和80℃下，气凝胶的降温效果分别为31.3℃和41.4℃。辐射冷却试验表明，含15 wt% ZrO2的气凝胶在白天可实现9.14℃的降温。同时，气凝胶冷却器具有优异的超疏水（150°）、自清洁性能和循环压缩性能。这一发现将推动被动辐射冷却领域朝着更绿色、更可持续的方向发展。

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引用次数: 0

Thermoelectric-driven temperature-sensing multifunctional hydrogel for smart applications 用于智能应用的热电驱动温度传感多功能水凝胶

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2026-01-01 DOI: 10.1016/j.aiepr.2025.09.008

Yuxuan Wu , Yujie Chen , Yitong Zhou , Qiuyun Zhang , Zimo Pang , Sijia Li , Hezhou Liu

Conductive hydrogels, valued for their ease of fabrication, mechanical flexibility, high stretchability, and excellent biocompatibility, are extensively utilized as core components in electronic skin and wearable sensors. However, their applications in complex environments remain limited by insufficient multifunctionality and dependence on single-sensing mechanisms, such as strain-responsive resistance changes. In this study, we innovatively introduced two-dimensional layered double hydroxides (LDH) into conductive hydrogels to create a multifunctional hydrogel primarily crosslinked through electrostatic interactions. This design integrated high mechanical properties, self-healing capabilities, strong adhesiveness, environmental stability (water retention and freeze resistance), and dual sensing capabilities. Unlike conventional strain-responsive hydrogels, our material leveraged skin-inspired thermoelectric effects to achieve temperature sensing, exhibiting a Seebeck coefficient of 3.04 mV K⁻¹. When adhered to skin, it detected high-temperature threats within 2 s with rapid warning response. By transcending deformation-dependent resistance sensing, this work pioneered a skin-inspired thermoelectric approach, offering a paradigm for hazard detection and multidimensional sensing in electronic skin and adaptive electronic interfaces.

导电水凝胶因其易于制造、机械柔韧性、高拉伸性和优异的生物相容性而受到重视，被广泛用作电子皮肤和可穿戴传感器的核心部件。然而，它们在复杂环境中的应用仍然受到多功能性不足和依赖单一传感机制（如菌株响应性电阻变化）的限制。在这项研究中，我们创新地将二维层状双氢氧化物（LDH）引入导电水凝胶中，以创建主要通过静电相互作用交联的多功能水凝胶。该设计集高机械性能、自愈能力、强粘附性、环境稳定性（保水性和抗冻性）和双传感能力于一体。与传统的应变响应水凝胶不同，我们的材料利用皮肤激发的热电效应来实现温度传感，其塞贝克系数为3.04 mV K−1。当它附着在皮肤上时，可以在2秒内检测到高温威胁，并迅速做出预警反应。通过超越变形相关的电阻传感，这项工作开创了一种皮肤启发的热电方法，为电子皮肤和自适应电子接口中的危险检测和多维传感提供了范例。

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引用次数: 0

Microencapsulation of clean gaseous fire-extinguishing agents for fire-retardant coatings 阻燃涂料用洁净气体灭火剂的微胶囊化

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2026-01-01 DOI: 10.1016/j.aiepr.2025.09.013

Xueshun Ji , Manwen Zhang , Fangyuan Li , Xueting Hua , Yanbei Hou , Weizhao Hu , Yuan Hu

Most initial fires that originate in confined spaces cannot be effectively controlled by automatic fire suppression systems. Microcapsule fire-extinguishing agents, which exhibit stimulus-responsive behavior, are not constrained by storage and transportation conditions, thus enabling efficient suppression of initial fires. However, microencapsulation of low-boiling-point gaseous fire-extinguishing agents remains a significant challenge. In this study, fire-extinguishing microcapsules with both automatic response and fire suppression functions were successfully fabricated via suspension polymerization. These microcapsules have a stable core-shell structure with a robust, airtight shell, and effectively encapsulating the fire-extinguishing agent in a high-pressure liquefied state. By optimizing the formulation and preparation parameters, their morphologies and thermal responses were analyzed. The resulting microcapsules exhibited uniform particle size, optimal shape, targeted temperature-triggered release, and high encapsulation ratio and efficiency. They also demonstrated good storage stability and outstanding performance in laboratory fire suppression tests. When incorporated into flammable resins, they significantly enhanced their flame retardancy. This study shows promise for fire safety in confined areas and applications for fire-retardant coatings.

大多数发生在密闭空间的火灾不能被自动灭火系统有效控制。微胶囊灭火剂表现出刺激响应行为，不受储存和运输条件的限制，因此能够有效地抑制初始火灾。然而，低沸点气体灭火剂的微胶囊化仍然是一个重大挑战。本研究采用悬浮聚合法制备了同时具有自动反应和灭火功能的灭火微胶囊。这些微胶囊具有稳定的核壳结构，外壳坚固、气密，能在高压液化状态下有效封装灭火剂。通过优化配方和制备参数，对其形貌和热响应进行了分析。制备的微胶囊具有粒径均匀、形状优化、温度触发释放靶向性好、包封率高、包封效率高等特点。在实验室灭火试验中也表现出良好的储存稳定性和优异的性能。当掺入可燃树脂时，它们显著增强了阻燃性。这项研究为密闭区域的消防安全以及防火涂料的应用提供了前景。

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引用次数: 0

Research on sodium bicarbonate abrasive jet machining technology for post-processing treatments of 3D printed PEEK implant to achieve non-destructive deburring and enhancing cell adhesion 用于3D打印PEEK植入体后处理的碳酸氢钠磨料射流加工技术研究，实现非破坏性去毛刺和增强细胞粘附

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-10-01 DOI: 10.1016/j.aiepr.2025.06.004

Zhouyu Jiang , João Pedro Oliveira , Yuchen Zhang , Lei Liu , Jiajia Shen , Wenhao Su , Zihui Jing , Mingliang Wang

The non-destructive deburring and hydrophilic surface machining of 3D printed Polyetheretherketone (PEEK) implants surface is critical for post-processing production of the implants. A green sodium bicarbonate abrasive jet machining technology was proposed in this study, aiming to ensure low damage of implants surface while effectively deburring and creating a hydrophilic surface conducive to cell adhesion. By comparing the machining effects of sodium bicarbonate abrasive and other hard abrasives (alumina and glass bead) under various jet pressures and angles, it was confirmed that sodium bicarbonate abrasive jet machining technology could provide the low damage (Ra = 1.75∼3.73 μm), moderate machining rate (0.24∼2.26 mg/s), excellent deburring performance, and outstanding surface cleanliness. Based on the comparison of experimental data and finite element simulation results, the fluid characteristics of abrasive particle beam and the combined machining mechanism (compression and plowing effect) of sodium bicarbonate abrasive jet machining technology were determined. Based on the consistent crystal phase and high purity displayed in the characterization of recycled abrasives, the feasibility of the designed abrasive recycling procedure was confirmed. Moreover, the fluorescence staining results of the adherent cell proliferation experiments confirmed that the sodium bicarbonate abrasive jet machining technology could effectively promote cell adhesion and growth by providing the matte elongated scratch-like micro-texture for the PEEK implants surface. In the future, this technology could facilitate the development for post-processing treatments in 3D printed PEEK implants additive manufacturing process.

3D打印聚醚醚酮（PEEK）植入物表面的无损去毛刺和亲水表面加工是植入物后处理生产的关键。本研究提出了一种绿色碳酸氢钠磨料射流加工技术，旨在保证种植体表面的低损伤，同时有效地去毛刺，形成有利于细胞粘附的亲水表面。通过对比碳酸氢钠磨料与其他硬质磨料（氧化铝和玻璃珠）在不同射流压力和角度下的加工效果，证实碳酸氢钠磨料射流加工技术具有低损伤（Ra = 1.75 ~ 3.73 μm）、中等加工速率（0.24 ~ 2.26 mg/s）、优异的去毛刺性能和优异的表面清洁度。在实验数据与有限元仿真结果对比的基础上，确定了磨料颗粒束的流体特性以及碳酸氢钠磨料射流加工技术的复合加工机理（压缩和犁耕效应）。基于回收磨料所表现出的晶相一致、纯度高的特性，验证了所设计的磨料回收工艺的可行性。此外，粘附细胞增殖实验的荧光染色结果证实，碳酸氢钠磨料射流加工技术可以有效地促进细胞的粘附和生长，为PEEK植入物表面提供亚光细长的划痕状微纹理。在未来，该技术可以促进3D打印PEEK植入物增材制造工艺的后处理处理的发展。

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引用次数: 0

Integrated flexible composite for robotic skin applications with sensing, EMI shielding, and flame/explosion resistance 集成柔性复合材料的机器人皮肤应用与传感，电磁干扰屏蔽，和火焰/防爆

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-10-01 DOI: 10.1016/j.aiepr.2025.07.001

Muchao Qu , Jinfeng Cai , Zhenyu Chen , Hangsheng Weng , Guanda Yang , Dirk W. Schubert , Zhenxing Zheng , Chenzhong Mu , Xianhu Liu

In this study, a multifunctional composite membrane is developed for advanced robotic skin applications, combining strain sensing, EMI shielding, and flame/explosion resistance. The membrane is fabricated by coating copper onto woven polyester fabric, followed by a layer of cobalt oxide-doped polyurea. This structure achieves high tensile strength (∼40 MPa), a Young's modulus of ∼328 MPa, and excellent flexibility. The composite membrane exhibits stable strain response, EMI shielding effectiveness up to 34 dB (X-band), and dominant absorption characteristics. Enhanced flame retardancy and explosion resistance result from the synergistic effects of the copper network and PU coating, which enable thermal insulation and protective char formation. These integrated properties make the copper-deposited fabric reinforced with CoO-doped polyurea a promising candidate for robust, lightweight robotic skins operating in harsh environments.

在这项研究中，开发了一种多功能复合膜，用于先进的机器人皮肤应用，结合了应变传感，EMI屏蔽和阻燃/防爆性。该膜是通过在编织聚酯织物上涂上铜，然后涂上一层氧化钴掺杂的聚脲来制造的。该结构具有高抗拉强度（~ 40 MPa）、杨氏模量（~ 328 MPa）和优异的柔韧性。该复合膜具有稳定的应变响应、高达34 dB （x波段）的电磁干扰屏蔽效果和显著的吸收特性。铜网和PU涂层的协同作用增强了阻燃性和防爆性，从而实现了隔热和保护炭的形成。这些综合性能使掺杂钴的聚脲增强的铜沉积织物成为在恶劣环境下运行的坚固，轻质机器人皮肤的有希望的候选者。

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引用次数: 0

Mechanical and thermal properties of epoxy hybrid foams with inorganic and organic microspheres 无机微球和有机微球环氧复合泡沫塑料的力学和热性能

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-10-01 DOI: 10.1016/j.aiepr.2025.08.001

Haiwen Tang , Yingqing Zhan , Fan Lei , Zhoukun He , Fei Zhong , Ying Li , Pan Wang , Kui Li , Zhongxiang Bai , Wei Feng , Xulin Yang

This study reports the preparations and properties of hybrid composite foams composed of epoxy (E−51) resin, organic expandable microspheres (EMP), and inorganic hollow glass microspheres (HGM). The EMP content was fixed 4 wt% and the effect of HGM loading on the microstructure, mechanical and thermal properties of E−51/EMP/HGM foams were systematically evaluated. E−51/EMP/HGM foam achieved a low density of 0.5 g/cm³ and a high porosity of 60 %, with no visible superficial defects. A microstructure transition from organic-dominant to inorganic-dominant was observed at 4 wt% HGM content. This transition profoundly influenced its compressive failure mechanism, with the organic-dominant structure exhibiting superior load-bearing capacity. The char residue of E−51/EMP/HGM foam is 12.67 % higher than E−51/EMP foam. At equivalent thermal-insulation levels, E−51/EMP/HGM foam surpasses E−51/EMP foam in mechanical properties and thermal stability, while simultaneously lowering raw-material costs and reducing processing complexity. This work provides valuable insights into the industrial development of epoxy foams through the combination of inorganic and organic microspheres.

本文报道了环氧树脂（E−51）、有机可膨胀微球（EMP）和无机中空玻璃微球（HGM）复合泡沫材料的制备及其性能。EMP含量固定为4 wt%，系统评价了HGM加载对E−51/EMP/HGM泡沫的微观结构、力学性能和热性能的影响。E - 51/EMP/HGM泡沫实现了0.5 g/cm3的低密度和60%的高孔隙率，没有明显的表面缺陷。当HGM含量为4 wt%时，观察到微观结构从有机为主转变为无机为主。这种转变深刻影响了其压缩破坏机制，有机主导结构表现出优越的承载能力。E−51/EMP/HGM泡沫炭渣比E−51/EMP泡沫炭渣高12.67%。在同等隔热水平下，E - 51/EMP/HGM泡沫在机械性能和热稳定性方面优于E - 51/EMP泡沫，同时降低了原材料成本并降低了加工复杂性。通过无机微球和有机微球的结合，为环氧泡沫塑料的工业发展提供了有价值的见解。

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引用次数: 0

Machine learning as a surrogate for FEM: Predicting mechanical properties of tyres 机器学习作为FEM的替代品：预测轮胎的机械性能

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-10-01 DOI: 10.1016/j.aiepr.2025.08.003

Yang Pei, Bing Han, Dileep Kumar, Scott Adams, Sui Yang Khoo, Michael Norton, Abbas Z. Kouzani

Accurately characterizing the mechanical properties of tyre materials remains a critical challenge due to their heterogeneous composition and anisotropic behaviour. This study introduces a comprehensive modelling pipeline that integrates composite-informed Finite Element Methods (FEM) with supervised machine learning techniques to enable robust prediction of the mechanical properties of waste tyre materials. Incorporating composite-structure principles into FEM enables the development of a high-fidelity, well-parameterised simulation model capable of generating diverse synthetic datasets. These datasets are used to train and evaluate a range of predictive models, including deep learning architectures such as Long Short-Term Memory (LSTM) and Feedforward Neural Networks (FNN), as well as traditional machine learning algorithms such as Extreme Gradient Boosting (XGBoost). The results demonstrate that deep learning approaches consistently outperform conventional machine learning methods in predictiion accuracy, with XGBoost identified as the most effective among traditional machine learning approaches. Experimental validation confirms the reliability and physical relevance of the proposed framework. Sensitivity and data-efficiency analyses indicate that 500–800 simulated samples are sufficient for accurate predictions. Furthermore, directional dependency in mechanical behaviour is captured, with peak Young's modulus observed along orientations aligned with the tyre's rolling direction. This study establishes a validated, machine-learning-based surrogate modelling approach as a fast and reliable alternative to FEM analysis of complex waste tyre composites for predicting their mechanical properties. Beyond tyre recycling, the methodology provides a scalable and transferable framework for the mechanical characterization of other anisotropic and heterogeneous materials in engineering design and sustainable material reuse.

由于轮胎材料的非均匀成分和各向异性行为，准确表征其机械性能仍然是一个关键的挑战。本研究介绍了一种综合建模管道，该管道将复合材料有限元方法（FEM）与监督机器学习技术相结合，能够对废轮胎材料的机械性能进行稳健预测。将复合结构原理结合到FEM中，可以开发出高保真度、参数化良好的仿真模型，能够生成各种合成数据集。这些数据集用于训练和评估一系列预测模型，包括长短期记忆（LSTM）和前馈神经网络（FNN）等深度学习架构，以及极端梯度增强（XGBoost）等传统机器学习算法。结果表明，深度学习方法在预测精度方面始终优于传统机器学习方法，XGBoost被认为是传统机器学习方法中最有效的方法。实验验证证实了所提出框架的可靠性和物理相关性。灵敏度和数据效率分析表明，500-800个模拟样本足以进行准确的预测。此外，机械行为的方向依赖性被捕获，峰值杨氏模量沿着与轮胎滚动方向对齐的方向观察到。本研究建立了一种经过验证的、基于机器学习的代理建模方法，作为复杂废轮胎复合材料有限元分析的一种快速可靠的替代方法，用于预测其力学性能。除了轮胎回收之外，该方法还为工程设计和可持续材料再利用中的其他各向异性和异质材料的力学特性提供了可扩展和可转移的框架。

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引用次数: 0

Optimizing interfacial stability of sulfurized polyacrylonitrile batteries by fluorinated composite polymer electrolytes 氟化复合聚合物电解质优化硫化聚丙烯腈电池界面稳定性

IF 12 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Industrial and Engineering Polymer Research

Pub Date : 2025-10-01 DOI: 10.1016/j.aiepr.2025.07.004

Junshi Zhang, Linglan He, Chen Li, Zhaokun Wang, Zuohang Li, Yue Ma, Xixi Shi, Hongzhou Zhang, Dawei Song, Lianqi Zhang

Sulfurized polyacrylonitrile (SPAN) is a promising cathode to address the notorious polysulfide shuttle effect sluggish and reaction dynamics of traditional lithium-sulfur (Li–S) batteries through its conductive pyridinic framework. However, the stability of lithium anode interface remains a hot potato due to the high working current density. Herein, a new polymer electrolyte (PHL5) comprising poly(vinylidene fluoride)-hexafluoropropylene (PVDF-HFP) polymer matrix and 5 % garnet-type Li₇La₃Zr₂O₁₂ (LLZO) filler is developed to regulate uniform Li⁺ deposition and enhance Li⁺ transport efficiency for Li-SPAN batteries. The Lewis acid-base interaction between PVDF-HFP and LLZO is verified through Raman. Theoretical calculations further reveal that PHL5 exhibits lower binding energy with Li⁺ while showing higher binding energy with PF₆⁻, thereby promoting lithium salt dissociation and facilitating enhanced ion transport kinetics. Distribution of relaxation times (DRT) and in situ microscopic-electrochemical battery test demonstrate that the incorporation of LLZO effectively regulates Li⁺ deposition. Specifically, Li/PHL5/SPAN battery presents a remarkable capacity of 1010.9 mAh g⁻¹ after 300 cycles at a high rate of 0.5C, higher than those of PVDF-HFP (PH) and liquid electrolyte counterparts (LE). Additionally, Li/PHL5/SPAN pouch battery maintains a stable voltage profile and operates reliably under extreme mechanical conditions, including hammering, folding and cutting. This strategy offers a novel approach for developing high-performance and practical Li–S battery technologies.

硫化聚丙烯腈（SPAN）通过其导电吡啶框架，有望解决传统锂硫电池（li -硫）的多硫穿梭效应缓慢和反应动力学问题。然而，由于工作电流密度大，锂阳极界面的稳定性一直是一个棘手的问题。本文研制了一种由聚偏氟乙烯-六氟丙烯（PVDF-HFP）聚合物基体和5%石榴石型Li7La3Zr2O12 （LLZO）填料组成的新型聚合物电解质（PHL5），可调节Li- span电池中Li+的均匀沉积，提高Li+的传输效率。通过拉曼实验验证了PVDF-HFP与LLZO之间的Lewis酸碱相互作用。理论计算进一步表明，PHL5与Li+的结合能较低，而与PF6−的结合能较高，从而促进锂盐解离，促进离子运输动力学的增强。弛豫时间（DRT）分布和原位显微电化学电池测试表明，LLZO的掺入有效地调节了Li+的沉积。具体而言，Li/PHL5/SPAN电池在0.5C的高倍率下循环300次后的容量为1010.9 mAh g−1，高于PVDF-HFP （PH）和液体电解质（LE）电池。此外，Li/PHL5/SPAN袋式电池保持稳定的电压分布，并在极端机械条件下可靠地运行，包括锤击，折叠和切割。该策略为开发高性能和实用的锂电池技术提供了一种新的方法。

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引用次数: 0