Composites Part B: Engineering最新文献_第2页

From nanoscale to printed products: Multiscale modeling and experimental characterization of graphene-enhanced polylactic acid composites for 3D printing 从纳米级到打印产品：用于 3D 打印的石墨烯增强聚乳酸复合材料的多尺度建模和实验表征

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112354

Atta Muhammad , Clara Valero , Paolo De Angelis , Nikolaos Koutroumanis , Dionisis Semitekolos , Bárbara Jiménez , Rubén Rivera , Carlos Sáenz Ezquerro , Rajat Srivastava , Panagiotis-Nektarios Pappas , Costas Galiotis , Costas A. Charitidis , Eliodoro Chiavazzo , Pietro Asinari , Manuel Laspalas , Agustín Chiminelli , Matteo Fasano

Carbon-based nanoparticles can significantly enhance the specific characteristics of polymers, impacting mechanical, thermal, electrical, and magnetic properties. However, incorporating these enhancements into final products can be challenging due to the influences of subsequent processing steps required to transform the material into components. This is the case of nano-modifications of 3D printing thermoplastic filaments. The filament characteristics and the printing process’s resulting material microstructure affect the final properties of the material produced. The resulting material exhibits a hierarchical multiscale structure, necessitating a combination of various simulation approaches and methods to capture the relevant effects and influences across different scales, ultimately allowing for accurate prediction of the final material response in the product. This study focuses on predicting key thermal and mechanical properties of polymer nanocomposites and 3D printing materials. The analysis is based on coarse-grained molecular dynamics and continuum models across different scales, complemented by experimental characterization of the base material (filament) and micrographic analysis of the printed material. The findings demonstrate the potential of modeling to predict various material responses. The multiscale model reveals that with a modest addition of nanofiller (up to 2 wt%), the Young’s modulus and thermal conductivity show up to 11% enhancement. These predictions closely align with the experiments, exhibiting a maximum deviation of 2.3%. In conclusion, this study demonstrates that the combination of diverse modeling techniques and experimental validation provides valuable guidance for materials development and engineering, as well as a deeper understanding of the process/structure/properties relationships.

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引用次数: 0

Influence of fiber/matrix interface on gas permeability properties of CF/TP composites

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112358

Gautier Allusse , Olivier De Almeida , Quentin Govignon , Monica Pucci , Fabrice Schmidt

For hydrogen application, one of the most important material property required is low gas permeability. In composite materials, this property depends on the materials but also on the processing parameters. In particular the residual porosity, but also the quality of the fiber/matrix interface, play a crucial role. This is particularly the case in composites involving a thermoplastic matrix with carbon fibers as the lack of reactive groups on the fiber surface can limit the level of interfacial interactions between the reinforcement and the matrix. In this study, the role of the interface is analyzed through the investigation of the hydrogen permeability of carbon fiber reinforced thermoplastics (CF/PVDF and CF/PPS) using different polymers and carbon fibers. The hydrogen permeability of the composites was measured, and a correlation with the crystallization behavior of the matrix on the fiber surface was identified. Hydrogen permeability decreases when the fiber favors matrix nucleation. Nucleation is improved by increasing the surface roughness of the carbon fiber.

氢气应用所需的最重要材料特性之一是低气体渗透性。在复合材料中，这一特性不仅取决于材料，还取决于加工参数。尤其是残余孔隙率，以及纤维/基体界面的质量都起着至关重要的作用。热塑性基体与碳纤维的复合材料尤其如此，因为纤维表面缺乏活性基团会限制增强材料与基体之间的界面相互作用水平。在本研究中，通过研究使用不同聚合物和碳纤维的碳纤维增强热塑性塑料（CF/PVDF 和 CF/PPS）的氢渗透性，分析了界面的作用。测量了复合材料的透氢率，并确定了纤维表面基体结晶行为的相关性。当纤维有利于基体成核时，透氢率会降低。提高碳纤维的表面粗糙度可改善成核现象。

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引用次数: 0

Microstructure and mechanical properties of nano TiB whisker-reinforced titanium matrix composites using atomized Ti–TiB composite powder as raw materials

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112392

Lei Liu , Shufeng Li , Shaolong Li , Huiying Liu , Shaodi Wang , Dongxu Hui , Xin Zhang , Shota Kariya , Ammarueda Issariyapat , Junko Umeda , Katsuyoshi Kondoh , Bolv Xiao , Zongyi Ma

In situ formed TiB-reinforced titanium matrix composites (TMCs) have gained significant attention for their high specific modulus and strength. However, the high sintering temperatures required for in situ reactions and densification can cause rapid coarsening of TiB whiskers, limiting the improvements in mechanical properties. This study proposes a "low-temperature sintering + hot extrusion" method to prepare nano TiB-reinforced Ti–TiB composites. The process involves low-temperature sintering at 800 °C—below the HCP-Ti phase transformation temperature—followed by hot extrusion for densification. The resulting Ti–TiB composites feature TiB with diameters of approximately 123 nm. The yield strength (YS) and ultimate tensile strength (UTS) of the nano TiB-reinforced Ti–TiB composites reach 632 MPa and 833 MPa, respectively, reflecting increases of 70 % and 51 % compared to microscale TiB-reinforced Ti–TiB composites, while maintaining an elongation (El) of 13.97 %. The size evolution of TiB in the composites follows a temperature-dependent progression. Below 800 °C, TiB remains nanoscale, while temperatures above 800 °C, TiB grows to the microscale. The failure mode also shifts with TiB size, from interfacial debonding at the microscale to load-bearing fracture at the nanoscale. Additionally, the refinement of matrix grains and the obstruction of dislocations by nanoscale TiB further improve mechanical properties. This work opens a new controllable and facile route for preparing nano TiB-reinforced titanium matrix composites with promising properties.

{"title":"Microstructure and mechanical properties of nano TiB whisker-reinforced titanium matrix composites using atomized Ti–TiB composite powder as raw materials","authors":"Lei Liu , Shufeng Li , Shaolong Li , Huiying Liu , Shaodi Wang , Dongxu Hui , Xin Zhang , Shota Kariya , Ammarueda Issariyapat , Junko Umeda , Katsuyoshi Kondoh , Bolv Xiao , Zongyi Ma","doi":"10.1016/j.compositesb.2025.112392","DOIUrl":"10.1016/j.compositesb.2025.112392","url":null,"abstract":"<div><div>In situ formed TiB-reinforced titanium matrix composites (TMCs) have gained significant attention for their high specific modulus and strength. However, the high sintering temperatures required for in situ reactions and densification can cause rapid coarsening of TiB whiskers, limiting the improvements in mechanical properties. This study proposes a \"low-temperature sintering + hot extrusion\" method to prepare nano TiB-reinforced Ti–TiB composites. The process involves low-temperature sintering at 800 °C—below the HCP-Ti phase transformation temperature—followed by hot extrusion for densification. The resulting Ti–TiB composites feature TiB with diameters of approximately 123 nm. The yield strength (YS) and ultimate tensile strength (UTS) of the nano TiB-reinforced Ti–TiB composites reach 632 MPa and 833 MPa, respectively, reflecting increases of 70 % and 51 % compared to microscale TiB-reinforced Ti–TiB composites, while maintaining an elongation (El) of 13.97 %. The size evolution of TiB in the composites follows a temperature-dependent progression. Below 800 °C, TiB remains nanoscale, while temperatures above 800 °C, TiB grows to the microscale. The failure mode also shifts with TiB size, from interfacial debonding at the microscale to load-bearing fracture at the nanoscale. Additionally, the refinement of matrix grains and the obstruction of dislocations by nanoscale TiB further improve mechanical properties. This work opens a new controllable and facile route for preparing nano TiB-reinforced titanium matrix composites with promising properties.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112392"},"PeriodicalIF":12.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Collaborative improvement of interfacial properties of carbon fiber/epoxy resin composites through modulus/toughness matching and gradient interface

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112398

Yujie Yue , Guojun Song , Li Li , Jie Zhao , Xupeng Li , Guoqiang Cao , Xiang Luo , Bentao Yu , Min Fang , Yuankai Li , Guangshun Wu , Lichun Ma

The interface is crucial for the mechanical properties of composite which is tightly linked to the microstructure of CF surface and resin matrix. However, the modulus mismatch between CF and resin leads to stress concentration and poor interfacial performance. This study proposes a bidirectional structural design strategy aimed at optimizing the interfacial performance of CF/epoxy composites from the perspective of interfacial construction and modulus matching. An organic-inorganic three-dimensional hybrid particle <PDI,GO> (the notation <PDI,GO> indicates a composite formed between PDI and GO through both chemical and physical interactions) was synthesized to enhance the modulus and toughness of resin, as well as the chemical bonding, mechanical entanglement and wettability with resin of CF surface. Compared to the original and single pathway (either the CF or resin), the transverse tensile strength of the bidirectionally modified composites increased by 68.4%, 31.2% and 18.0%, and the interlaminar shear strength increased by 23.6%, 8.5%, 18.6%, respectively. Furthermore, a comprehensive exploration of synergistic reinforcement mechanisms and stress dispersion patterns at the composites was conducted. This bidirectional structural design strategy provides a new avenue for the next-generation high-performance composites in the fields of aerospace, rail transit and so on.

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引用次数: 0

Integrated hydrogel of fucoidan and rhCol III for bioprosthetic heart valves to promote the antithrombosis, anti-inflammatory, and anti-calcification properties

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112396

Kaiyang Huang , Cheng Zheng , Xueyu Huang , Bangquan Wei , Lepeng Chen , Gaocan Li , Li Yang , Yunbing Wang

Glutaraldehyde cross-linked bioprosthetic heart valves (BHVs) have been widely used in clinical practice for its superior hemodynamic properties and significantly reduced requirement on anticoagulant therapy. However, the lifespan and biocompatibility of BHVs remain limited due to thrombus accumulation, poor endothelialization, inflammation, and progressive calcification. In this study, we introduced heparin-like fucoidan and recombinant humanized type III collagen (rhCol III) into glutaraldehyde cross-linked BHVs (GLUT) through photoinduced polymerization, thereby preparing an integrated hydrogel functionalized BHV (Fu-rhCol III). This multifunctional hydrogel formed a biocompatible barrier, providing robust protection for internal valve fibers and exhibiting strong resistance to platelet adhesion and thrombus formation in vitro. The Fu-rhCol III effectively reduced the cytotoxicity of GLUT, accelerating the endothelialization process. Fu-rhCol III maintained the structural stability and mechanical properties brought by glutaraldehyde cross-linking. This composite hydrogel demonstrated the significant suppression of acute inflammatory responses and satisfactory anti-calcification effect in subcutaneous implantation test. 60-day implantation results indicated that calcium deposition of Fu-rhCol III decreased by 96 % compared with GLUT. In summary, this integrated hydrogel modification provides a promising strategy for future design of BHVs.

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引用次数: 0

3D printing of heat-resistant thermosetting polyimide composite with high dimensional accuracy and mechanical property 三维打印具有高尺寸精度和机械性能的耐热热固性聚酰亚胺复合材料

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112394

Xinyu Du , Yi Liu , Wei Zhao , Lin Fan , Song Mo , Lei Zhai , Minhui He , Dan Peng , Qiuhong Mou , Gong Wang

3D printing of polyimide parts with high heat resistance, dimensional accuracy and mechanical property is quite challenging because the manufacturing requirements restrict molecular structural design. Hence, combination of molecular design of thermosetting polyimide oligomer and a two-step reactive 3D printing strategy is conducted. Siloxane-containing phenylethynyl-terminated polyimide oligomer powders with milled carbon fibers are developed, which can be precured with laser scanning in a selective laser sintering (SLS) equipment, forming self-standing green parts with complex geometries. These green parts can be thermally postcured to polyimide parts with high dimensional stability. The linear shrinkage in Z axis is less than 4.74 %. Oligomers experience crosslinking of phenylethynyl groups and oxidation crosslinking of siloxane units during SLS and postcuring. Therefore, the printed polyimide parts give a tensile strength of 82 MPa and a glass transition temperature of 419 °C. Honeycombs fabricated by this strategy give higher specific compression strength and can withstand temperature as high as 400 °C. The wear-resistant self-lubricating materials prepared by this approach exhibit a reliable tribological property after atomic oxygen and ultraviolet irradiations. These findings will provide useful insight for designing and fabricating structural components with complex shapes that might be applied in aerospace extreme environment.

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引用次数: 0

Combined experiment and simulation on pore structure of graphene aerogel for microwave absorption and thermal insulation

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112397

Guangyu Qin , Yanan Liu , Yuefeng Yan , Ziyan Cheng , Guansheng Ma , Kaili Zhang , Xiaoxiao Huang

The configuration of pore structures is of paramount importance for the microwave absorption and thermal insulation of conductive aerogels. Nevertheless, design methodologies that rely on extensive experimental experience have limited the applicability of conductive aerogels in radar-infrared compatible stealth applications. In this study, finite element simulations of microwave absorption and heat transfer properties are conducted using a simplified two-dimensional model. The wave-absorbing and heat-insulating properties of graphene aerogel as influenced by the pore structure are accurately predicted. The preparation of foamed graphene aerogels with isolated pores was conducted using a surfactant foaming process, with the process guided by simulation predictions. The size, number, and spacing of the bubbles can be flexibly controlled to provide the aerogel with an appropriate density and porosity, which balances the contradiction between the high attenuation capability and the impedance-matching nature. This enables the foamed aerogel to achieve reflection loss of −75.5 dB and ultra-wide effective absorption bandwidth of 9.5 GHz. Furthermore, the low density and isolated pores bestow upon the aerogel material exemplary thermal insulation capabilities, which masked the radiant temperature of a hot object from 135 °C to 50.8 °C. This work offers novel insights and a theoretical foundation for the design of pore structures in radar-infrared compatible stealth aerogels.

{"title":"Combined experiment and simulation on pore structure of graphene aerogel for microwave absorption and thermal insulation","authors":"Guangyu Qin , Yanan Liu , Yuefeng Yan , Ziyan Cheng , Guansheng Ma , Kaili Zhang , Xiaoxiao Huang","doi":"10.1016/j.compositesb.2025.112397","DOIUrl":"10.1016/j.compositesb.2025.112397","url":null,"abstract":"<div><div>The configuration of pore structures is of paramount importance for the microwave absorption and thermal insulation of conductive aerogels. Nevertheless, design methodologies that rely on extensive experimental experience have limited the applicability of conductive aerogels in radar-infrared compatible stealth applications. In this study, finite element simulations of microwave absorption and heat transfer properties are conducted using a simplified two-dimensional model. The wave-absorbing and heat-insulating properties of graphene aerogel as influenced by the pore structure are accurately predicted. The preparation of foamed graphene aerogels with isolated pores was conducted using a surfactant foaming process, with the process guided by simulation predictions. The size, number, and spacing of the bubbles can be flexibly controlled to provide the aerogel with an appropriate density and porosity, which balances the contradiction between the high attenuation capability and the impedance-matching nature. This enables the foamed aerogel to achieve reflection loss of −75.5 dB and ultra-wide effective absorption bandwidth of 9.5 GHz. Furthermore, the low density and isolated pores bestow upon the aerogel material exemplary thermal insulation capabilities, which masked the radiant temperature of a hot object from 135 °C to 50.8 °C. This work offers novel insights and a theoretical foundation for the design of pore structures in radar-infrared compatible stealth aerogels.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"298 ","pages":"Article 112397"},"PeriodicalIF":12.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unexpected processing-induced particle/matrix interactions in magnetic composites based on thermoplastic matrix

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.compositesb.2025.112399

Andrei Munteanu , Alenka Vesel , Arman Moini Jazani , Michal Sedlacik , Petra Drohsler , Martin Cvek

Understanding processing-induced changes in the polymer composites is of the utmost necessity as it affects the final properties and the reliability of the products. Despite their importance, related investigations are frequently overlooked, especially in the case of magnetorheological elastomers (MREs). In this study, the processing-induced changes were investigated within an isotropic MRE based on a thermoplastic elastomer (TPE) matrix loaded with carbonyl iron (CI) microparticles. Systematic thermomechanical tests in the molten state were used to mimic the processing conditions, revealing the time evolution of the particle/matrix interactions. The interactions manifested as an increase in the viscoelastic properties, which was attributed to the development of a secondary network composed of the confined polymer chains in the vicinity of the CI particles. The restricted mobility improved the reinforcing effect and structural integrity but diminished the field-induced stiffening of the composite, i.e., the magnetorheological effect. The existence of the particle/matrix covalent bonding was postulated and explained based on the coupling reaction between the thermomechanically-induced radicals formed in the polymer chain and the alkoxyl radicals on the surface of the CI particles. The new findings are highly relevant for the further development of reprocessable and recyclable TPE-based MREs, while the robust measuring protocol is deemed to be implementable for studying particle/matrix interactions in diverse composite systems.

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引用次数: 0

The synergistic regulation of micro sequence interface and macro bionic structure for superior microwave absorption performance

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-09 DOI: 10.1016/j.compositesb.2025.112380

Yunfeng Bao , Wenrui Wang , Xiaoqiang Qi , Siyao Guo , Yu Liu , Zhiqing Jia , Zuquan Jin

Micro-interface control and macro-structure design are crucial factors in achieving outstanding electromagnetic wave absorption (EMA) absorbers. However, it is still a challenge to obtain efficient EMA materials to satisfy practical applications through the synergistic regulation of the two. Herein, unique sequential interface engineering is proposed to ingeniously customize a series of FeCo nanochains (FC NCs) with various particle interface self-assembly combination modes, including face-to-face, corner-to-corner, and squeeze-to-squeeze. The dipole polarization, interfacial polarization, and magnetic coupling strength were enhanced to realize dielectric-magnetic synergies coupled with Ti₃C₂T_x MXene for exceptional EMA performance. The optimized squeeze-to-squeeze-shaped FeCo Nanochains/Ti₃C₂T_x MXene (FC3/MXene) exhibits the minimum reflection loss (RL_min) value of −60.95 dB at 1.897 mm and the reflection loss (RL) value of −51.46 dB at an ultralow thickness of 1.143 mm (The EMA efficiency exceeds 99.999 %). Additionally, a bionic periodic structure inspired by the sea urchin shell was designed based on the high-performance absorber FC3/MXene, achieving the impressive value of −64.48 dB and a whole absorption band covering 2−18 GHz, thanks to its isotropic structure and high porosity. Furthermore, in radar cross-section (RCS) simulations, FC3/MXene absorbers effectively reduce the radar detection distance of an unmanned aerial vehicle (UAV), demonstrating excellent stealth characteristics. Looking ahead, this work not only achieves strong RL intensity at ultralow thickness through sequential interface engineering but also obtains the super wide absorption band by bionic periodic structure design, opening new possibilities for diverse advanced technological applications.

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引用次数: 0

Synergy between nano SiO2-modified SAP and RHA in cement pastes: Shrinkage, microstructure, and strength

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering

Pub Date : 2025-03-09 DOI: 10.1016/j.compositesb.2025.112368

Dongbing Jiang , Xiangguo Li , Changjiao Li , Yang Lv , Hui Rong , Deqiang Zhao , Zhengyu Yu , Konstantin Sobolev , Piqi Zhao , Xin Cheng

The application of a single internal curing material is incapable of effectively balancing shrinkage inhibition and strength development. This paper investigated the effect of nano SiO₂-modified superabsorbent polymer (SAP-n) synergized with rice husk ash (RHA) on the shrinkage and mechanical properties of cement pastes. The water desorption process of the SAP-n/RHA composite within cement pastes was characterized using ¹H NMR, isothermal calorimetry, and internal relative humidity. Moreover, the hydration kinetics and microstructure of internally cured pastes were revealed. The results demonstrated that the addition of RHA reduced the amount of water released from hybrid system before the final set, and accelerated the desorption rate of SAP afterward, effectively mitigating self-desiccation. A “three-stage” gradient water release model of SAP-n/RHA composite driven by osmotic pressure and humidity differences was proposed. The porous RHA was uniformly distributed in the matrix, especially around the SAP, contributing to internal curing at later ages while providing extra silica to repair voids and densify the pore structure. Compared to pastes containing commercial SAP, the 91-day dry shrinkage of specimens with 0.2 wt% SAP-n and 3.6 wt% RHA was reduced by 16.1 % without compromising autogenous shrinkage inhibition efficiency, and the 28-day strength was increased by 20.6 %.

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引用次数: 0