Composites Part A: Applied Science and Manufacturing最新文献_第3页

Micro cross-linking strategy with dynamic covalent bond for high-performance epoxy-based thermoplastic polymer and polymer composites 高性能环氧基热塑性聚合物及聚合物复合材料的动态共价键微交联策略

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-26 DOI: 10.1016/j.compositesa.2025.109324

Duo Chen , Yujing Miao , Dongwei Xu , Shichao Li , Tengteng Li , Cong Peng , Xiaoqin Guo , Zhanjun Wu

{"title":"Micro cross-linking strategy with dynamic covalent bond for high-performance epoxy-based thermoplastic polymer and polymer composites","authors":"Duo Chen , Yujing Miao , Dongwei Xu , Shichao Li , Tengteng Li , Cong Peng , Xiaoqin Guo , Zhanjun Wu","doi":"10.1016/j.compositesa.2025.109324","DOIUrl":"10.1016/j.compositesa.2025.109324","url":null,"abstract":"<div><div>Developing high-performance thermoplastic polymer and polymer composites with convenient manufacturing and recycling performance still presents a challenge. Herein, a micro cross-linking strategy was introduced to balance the relationship between processability and mechanical properties of thermoplastic polymer. Though this strategy, a polyfunctional aromatic amine containing disulfide bond (AFD) was used as chain extender to prepare the micro cross-linking thermoplastic epoxy (MTPE). By controlling the AFD content, MTPE with various cross-linking densities were successfully synthesized. Compared with linear thermoplastic epoxy (TPE), the glass transition temperature and tensile strength of MTPE, and the tensile properties of carbon fiber reinforced MTPE composites (CF/MTPE) was significantly increased by 11.5 %, 16.3 % and 7.8 %, respectively. And, due to the dynamic exchange characteristics of disulfide bonds, the processing temperature of MTPE could be consistent with that of TPE. Additionally, full-length carbon fibers could be conveniently and rapidly recovered from CF/MTPE composites. Due to the excellent compatibility between MTPE and difunctional epoxides, the fine powder of CF/MTPE composites could be treated as a filler to enhance the mechanical properties of difunctional epoxides-based thermosets. This micro cross-linking strategy provides a new way for producing high-performance thermoplastic polymers and offers valuable insights into the recycling of composite materials.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109324"},"PeriodicalIF":8.1,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Temperature-dependent toughening of carbon/epoxy composites using rubbery NBR/PCL nanofibers: Mode I fracture and damage mechanisms 丁腈橡胶/PCL纳米纤维对碳/环氧复合材料的温度依赖增韧：I型断裂和损伤机制

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-25 DOI: 10.1016/j.compositesa.2025.109321

Hesamaldin Saghafi , Isa Ahmadi , Ramin Khamedi , Hamed Saghafi , Tommaso Maria Brugo , Emanuele Maccaferri , Francesco Mongioì , Andrea Zucchelli

{"title":"Temperature-dependent toughening of carbon/epoxy composites using rubbery NBR/PCL nanofibers: Mode I fracture and damage mechanisms","authors":"Hesamaldin Saghafi , Isa Ahmadi , Ramin Khamedi , Hamed Saghafi , Tommaso Maria Brugo , Emanuele Maccaferri , Francesco Mongioì , Andrea Zucchelli","doi":"10.1016/j.compositesa.2025.109321","DOIUrl":"10.1016/j.compositesa.2025.109321","url":null,"abstract":"<div><div>This study evaluates the temperature-dependent toughening effect of rubbery NBR/PCL nanofibers in carbon/epoxy composites under mode I loading. Double Cantilever Beam (DCB) tests at six temperatures (−30 °C to 120 °C) measured interlaminar fracture toughness in non-modified and nano-modified laminates. At 30 °C, modified specimens achieved 164 % higher initiation toughness and 394 % higher propagation toughness than non-modified ones, driven by nano-modified interactions that enhanced energy dissipation through plastic deformation and fiber bridging. However, at elevated temperatures (90 °C and 120 °C), toughness declined sharply due to modified matrix softening above the rubber’s glass transition temperature (T<sub>g</sub>) and PCL melting point, impairing crack-bridging efficacy. Fractographic analysis revealed contrasting failure modes: non-modified specimens exhibited matrix cracking (cusps) and fiber–matrix debonding, with cusp height reduction at higher temperatures. Nano-modified specimens showed hole-rich fracture surfaces and robust fiber–matrix adhesion at lower temperatures, confirming nanofiber-mediated toughening. This effect diminished at higher temperatures as nanofibers softened, reducing energy absorption. The results underscore the temperature sensitivity of NBR/PCL nanofibers in enhancing fracture resistance, with peak performance at lower temperatures. These findings provide critical insights for optimizing composite designs for applications exposed to varying thermal conditions, balancing toughening benefits against temperature-induced limitations.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109321"},"PeriodicalIF":8.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Microstructure-driven hydrogen permeability in thin-ply thermoplastic composites: Insights for Type V storage tanks 薄层热塑性复合材料中微结构驱动的氢渗透性：对V型储罐的见解

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-24 DOI: 10.1016/j.compositesa.2025.109316

F.E. Oz , A. Wagih , B. Joarder , S.J. Datta , M. Eddaoudi , G. Lubineau

{"title":"Microstructure-driven hydrogen permeability in thin-ply thermoplastic composites: Insights for Type V storage tanks","authors":"F.E. Oz , A. Wagih , B. Joarder , S.J. Datta , M. Eddaoudi , G. Lubineau","doi":"10.1016/j.compositesa.2025.109316","DOIUrl":"10.1016/j.compositesa.2025.109316","url":null,"abstract":"<div><div>The potential of thermoplastic composites for gas storage in Type V tanks remains to be fully assessed. Yet, we demonstrate for thin-ply carbon fiber-reinforced polyamide 6 (CF/PA6) composites a strong dependence of the hydrogen permeability to their microstructure. Cross-ply laminates with layer thicknesses of <span><math><mrow><mn>42</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span>, <span><math><mrow><mn>84</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span>, and <span><math><mrow><mn>168</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> were tested under hydrogen feed pressures of 5, 10, and 15 bar in pristine and pre-damaged states, induced by tensile loading to 60%–80% of ultimate strength. In pristine condition, thin-layer laminates exhibited higher permeability due to lower crystallinity, greater amorphous content, and lower flexural modulus. Thick-layer laminates, with larger crystalline domains, developed more tortuous diffusion paths leading to lower permeability. Increasing pressure decreased permeability through hydrogen-induced crystallization. Thin layers sustained early damage, maintaining consistent damage content at high strains, ensuring allowable permeability, while thick layers resisted initial damage but degraded at high strains, increasing permeability significantly. The findings highlight the impact of microstructure on hydrogen transport and provide key design insights for safe hydrogen storage in Type V tanks using thin-ply CF/PA6 composites.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109316"},"PeriodicalIF":8.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

“Lock–anchor chain” structure inspired double-crosslinked interface for improving the interfacial adhesion of CF/PEEK composites 采用“锁锚链”结构设计双交联界面，提高CF/PEEK复合材料的界面附着力

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-24 DOI: 10.1016/j.compositesa.2025.109319

Chengzhi Qin , Wei Wang , Liu Liu

{"title":"“Lock–anchor chain” structure inspired double-crosslinked interface for improving the interfacial adhesion of CF/PEEK composites","authors":"Chengzhi Qin , Wei Wang , Liu Liu","doi":"10.1016/j.compositesa.2025.109319","DOIUrl":"10.1016/j.compositesa.2025.109319","url":null,"abstract":"<div><div>A novel approach was developed to overcome the issue of weak interfacial adhesion in carbon fiber/polyether–ether–ketone (CF/PEEK) composites, combining surface modification via sizing with diazotization chemistry. In this “lock–anchor chain” structure–inspired design, carboxylated PEEK served as the “chain” and naphthyl groups introduced via esterification acted as the “anchor,” successfully yielding a waterborne crosslinkable PEEK-NAP sizing agent for enhancing interfacial interactions. In addition, the naphthyl groups are chemically grafted onto the surface of CF by diazotization reaction, functioning as a “locking mechanism” that enabled interactions with the anchor chain. Introduction of naphthalyl design markedly improves the interfacial interaction between the sizing agent and the CF. The distinguishing characteristic of this system manifests in the thermally induced self-crosslinking of naphthyl moieties during hot-pressing, resulting in a robust and stable structural framework. This framework imparts exceptional solvent resistance and unconventional interfacial stability to the composites. Experimental findings indicate that the implementation of this “lock–anchor chain” strategy engender marked enhancements in mechanical performance, with significant increases of 63.4% (flexural strength), 53.0% (interlaminar shear strength), and 82.3% (interfacial shear strength). These improvements are primarily ascribed to the synergistic effects of mechanical anchoring and interfacial bonding facilitated by the anchor-shaped PEEK-NAP sizing agent. Notably, even after solvent aging, modified CF composites retain their excellent mechanical properties.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109319"},"PeriodicalIF":8.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Orientation effects on the damage tolerance of carbon nanotube-reinforced aluminum composites 取向对碳纳米管增强铝复合材料损伤容限的影响

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-23 DOI: 10.1016/j.compositesa.2025.109320

Han Zhu , Zengqian Liu , Xiaonan Li , Hanzhong Liu , Xuegang Wang , Jiapeng Hou , Zhenyu Liu , Bolv Xiao , Zongyi Ma , Zhefeng Zhang

{"title":"Orientation effects on the damage tolerance of carbon nanotube-reinforced aluminum composites","authors":"Han Zhu , Zengqian Liu , Xiaonan Li , Hanzhong Liu , Xuegang Wang , Jiapeng Hou , Zhenyu Liu , Bolv Xiao , Zongyi Ma , Zhefeng Zhang","doi":"10.1016/j.compositesa.2025.109320","DOIUrl":"10.1016/j.compositesa.2025.109320","url":null,"abstract":"<div><div>Carbon nanotube (CNT)-reinforced aluminum matrix composites have attracted significant attention due to their promising properties. Fracture toughness and impact toughness are essential for their use in structural applications. In this study, CNT-reinforced 2009Al alloy composites with varying CNT contents were fabricated, and their microstructure, nanoindentation and tensile properties, fracture toughness, and impact toughness were systematically characterized and compared with those of CNT-free alloy. The results reveal anisotropic structural characteristics of the composites across multiple length scales, leading to pronounced mechanical anisotropy, with properties along the extrusion direction markedly surpassing those along the transverse direction. The increase in CNT content leads to enhanced nanoindentation hardness, reduced modulus, and tensile strength, but results in a compromise in plasticity and toughness. The mechanical properties were analyzed in relation to the microstructures and microscopic fracture characteristics. This study is expected to offer insights for the structural applications and component design of CNT-reinforced aluminum matrix composites.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109320"},"PeriodicalIF":8.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Through-thickness crystallinity gradient controls warpage reduction in CF/PAEK via in-situ consolidation automated fiber placement 通过原位固结自动纤维放置，通过厚度结晶度梯度控制CF/PAEK的翘曲减少

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-21 DOI: 10.1016/j.compositesa.2025.109310

Ye Wang , Zhibo Xin , Jie Yuan , Yugang Duan , Hong Xiao , Fanghong Yang , Daijun Zhang , Fuping Li

{"title":"Through-thickness crystallinity gradient controls warpage reduction in CF/PAEK via in-situ consolidation automated fiber placement","authors":"Ye Wang , Zhibo Xin , Jie Yuan , Yugang Duan , Hong Xiao , Fanghong Yang , Daijun Zhang , Fuping Li","doi":"10.1016/j.compositesa.2025.109310","DOIUrl":"10.1016/j.compositesa.2025.109310","url":null,"abstract":"<div><div>Aiming at reducing the warpage that occurs during in-situ consolidation automated fiber placement (ISC-AFP) of thermoplastic composites, this article explores, for the first time, the through-thickness crystallinity distribution characteristics of laminate and its effect on warpage. A tool-temperature-compensation isothermal consolidation (TTC-IC) technology is proposed to achieve warpage suppression. The research results indicate that laminate crystallinity decreases gradually from the bottom to the top layer. At a fixed initial consolidation temperature, higher tool temperatures (T<sub>tool</sub>) reduce the through-thickness temperature gradient during consolidation. However, as T<sub>tool</sub> increases, the through-thickness crystallinity gradient of the laminate also increases, resulting in greater warpage. This indicates that crystallinity gradient dominates the warpage. Via the proposed TTC-IC technology, the through-thickness crystallization gradient of the laminate was reduced, achieving a reduction of 33.33% in warpage and 46.1% in porosity. This study addresses the knowledge gap in warpage formation mechanisms for laminates fabricated via ISC-AFP and introduces a novel in-situ technological approach for warpage control.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109310"},"PeriodicalIF":8.1,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Rate-dependent 3D forming simulation of thermoplastic composite materials using visco-hyperelastic material modeling and 3D hexahedral solid-shell elements 热塑性复合材料的速率相关三维成形模拟使用粘超弹性材料建模和三维六面体固体壳单元

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-20 DOI: 10.1016/j.compositesa.2025.109306

Johannes Mitsch, Bastian Schäfer, Luise Kärger

{"title":"Rate-dependent 3D forming simulation of thermoplastic composite materials using visco-hyperelastic material modeling and 3D hexahedral solid-shell elements","authors":"Johannes Mitsch, Bastian Schäfer, Luise Kärger","doi":"10.1016/j.compositesa.2025.109306","DOIUrl":"10.1016/j.compositesa.2025.109306","url":null,"abstract":"<div><div>The Finite Element Method is a widely applied approach for predicting manufacturing effects in the thermoforming process of fiber-reinforced composite materials. The majority of macroscopic simulation approaches are based on shell elements with two-dimensional (2D) stress states and provide efficient predictions of the forming process of composite materials. However, they lack the ability to capture through-thickness behavior due to their dimensional limitations. The present study proposes a three-dimensional (3D) solid-shell element formulation that incorporates rate-dependent material modeling thus enabling the simulation of the thermoforming process of thermoplastic composites. The solid-shell element formulation provides a locking-free formulation, an hourglass stabilization technique to prevent zero-energy modes, a reduced integration scheme, and the consideration of a rate-dependent material behavior. An analysis of the correspondence between the material parameters of the 3D solid-shell element and an experimentally validated 2D approach indicates that the 2D approach can effectively be employed to characterize in-plane and bending material parameters for the 3D solid-shell element formulation, streamlining and accelerating its material parameter identification process. The parameterization of the nonlinear compaction behavior of the solid-shell element exhibits a strong correlation with experimental results from existing literature. Finally, the solid-shell element is utilized to simulate the thermoforming process of a thermoplastic tape, yielding results that closely match those obtained from a 2D approach. The predicted thickness distribution, determined by the new 3D solid-shell, agrees well with the expected results, confirming the validity and practical potential of the proposed approach.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109306"},"PeriodicalIF":8.1,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Simulation and experimental study of bending mechanical properties and damage evolution of carbon/glass hybrid fiber reinforced titanium alloy laminates at room temperature 碳/玻璃混杂纤维增强钛合金层合板室温弯曲力学性能及损伤演化的模拟与实验研究

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-19 DOI: 10.1016/j.compositesa.2025.109312

Haiying Li , Peng Yang , Shujian Li, Qiang Li, Shi Zou, Weiyin Liang, Tengfei Chang, Jinglong Sun

{"title":"Simulation and experimental study of bending mechanical properties and damage evolution of carbon/glass hybrid fiber reinforced titanium alloy laminates at room temperature","authors":"Haiying Li , Peng Yang , Shujian Li, Qiang Li, Shi Zou, Weiyin Liang, Tengfei Chang, Jinglong Sun","doi":"10.1016/j.compositesa.2025.109312","DOIUrl":"10.1016/j.compositesa.2025.109312","url":null,"abstract":"<div><div>This study aims to investigate the flexural mechanical properties and damage evolution behavior of carbon/glass hybrid fiber reinforced titanium alloy laminates (HFTLs) at room temperature through the combination of numerical simulation and experimental research. The three-point bending finite element model of HFTLs with 2/1 structure (the titanium alloys are used as the outer layer and the composite structure is the sandwich layer) is established, and the stress and strain evolution mechanisms are analyzed. Combining DIC online monitoring and SEM microscopic detection, the flexural response and failure behavior of HFTLs are discussed. Furthermore, the effect of the carbon/glass hybrid ratio (<em>N</em><sub>CG</sub> = 0 %, 25 %, 50 %, 75 % and 100 %) on the flexural properties of HFTLs is investigated. The results show that HFTLs exhibit significant stress gradient characteristics under bending loads at room temperature. When the upper titanium alloy layer is subjected to compressive stress, the lower titanium alloy layer mainly bears tensile stress, and the intermediate hybrid fiber layers mainly bear shear stress. Especially, the stress level of the hybrid fiber layers is lower than that of the titanium alloy layers, with an average stress reduction of approximately 76.4 %. By introducing hybrid glass fiber layers, the flexural strength and flexural modulus of HFTLs can be increased by 24.44 % and 12.90 %, respectively. The flexural failure of HFTLs primarily exhibits a mixed failure mode, which is closely related to the carbon/glass hybrid ratio. The failure modes manifest as brittle fracture of CFRP, matrix cracking, and delamination at the Ti/Gf and Gf/Cf interfaces.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109312"},"PeriodicalIF":8.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Sizing comingled CF/PA 6 fibers with cellulose nanofibrils for enhanced performance properties 纤维素纳米原纤维与CF/ pa6混纺纤维施胶，增强其性能

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-18 DOI: 10.1016/j.compositesa.2025.109308

Umesh Marathe , Halil Tekinalp , Georges Chahine , Adwoa Kyeiwaa Owusu , Akash Phadatare , Chinmay Mungale , David Rivera-Gonzalez , Saunak Niroula , Cait Clarkson , Sanjita Wasti , Katie Copenhaver , Merlin Theodore , Soydan Ozcan , Uday Vaidya

{"title":"Sizing comingled CF/PA 6 fibers with cellulose nanofibrils for enhanced performance properties","authors":"Umesh Marathe , Halil Tekinalp , Georges Chahine , Adwoa Kyeiwaa Owusu , Akash Phadatare , Chinmay Mungale , David Rivera-Gonzalez , Saunak Niroula , Cait Clarkson , Sanjita Wasti , Katie Copenhaver , Merlin Theodore , Soydan Ozcan , Uday Vaidya","doi":"10.1016/j.compositesa.2025.109308","DOIUrl":"10.1016/j.compositesa.2025.109308","url":null,"abstract":"<div><div>Compatibility between the reinforcing phase and the polymer matrix is critical to achieving the desired mechanical and thermal performance of composite materials. Several mechanisms can enhance this interfacial interaction, including surface treatments (e.g., oxidation, plasma, or irradiation), in-situ nanoparticle deposition, and fiber sizing. In this study, cellulose nanofibrils (CNF) were employed as a sustainable sizing agent to modify the interface in commingled carbon fiber (CF)/polyamide 6 (PA 6) yarns, in which CF and PA6 filaments are intimately blended to enable simultaneous consolidation. A 0.25 wt% CNF aqueous suspension was applied under bath sonication to ensure uniform dispersion and minimize agglomeration. CNF-sized and unsized yarns were used to fabricate unidirectional composite plates via filament winding on a flat mandrel, followed by compression molding. Scanning electron microscopy confirmed CNF presence on both CF and PA6 filaments. CNF-sized composites exhibited increments in interlaminar shear strength (ILSS) by 50%, flexural strength by 11%, and tensile strength by 2.5% compared to unsized composites. Thermal analysis showed minimal changes in degradation temperature and crystallinity. These findings demonstrate that CNF sizing enhances interfacial bonding and mechanical performance, offering a scalable and environmentally friendly strategy for thermoplastic composite manufacturing along with yarn/tow handleability.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109308"},"PeriodicalIF":8.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The entangled CNT anchoring in graphene using CVD approach for intelligent absorbing materials with thermal sensitivity effect 利用CVD方法将碳纳米管在石墨烯中进行纠缠锚定制备具有热敏效应的智能吸波材料

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-18 DOI: 10.1016/j.compositesa.2025.109311

Suyun Tian , Chuankai Yang , Yingzi Gu , Shengzhe Zhao , Xian Jian

{"title":"The entangled CNT anchoring in graphene using CVD approach for intelligent absorbing materials with thermal sensitivity effect","authors":"Suyun Tian , Chuankai Yang , Yingzi Gu , Shengzhe Zhao , Xian Jian","doi":"10.1016/j.compositesa.2025.109311","DOIUrl":"10.1016/j.compositesa.2025.109311","url":null,"abstract":"<div><div>Single-type carbon material is often limited in its application in the field of intelligent absorption due to their lack of outstanding performance. However, traditional physical mixing methods are difficult to achieve effective interface bonding and multifunctional coupling of carbon materials. Here, we developed an effective method to prepare the entangled CNTs anchoring in graphene for intelligent absorbing materials possessing thermal sensitivity effect combing hydrothermal and CVD methods. Interestingly, ultrafine CNTs with diameter below 18 nm catalyzed from Fe/Co nanocrystals well dispersed on rGO surfaces. The as-designed dielectric rGO-CNTs hybrids strongly bonding with magnetic Fe/Co catalyst have the excellent microwave absorption performance. The RL<sub>min</sub> value of the −37.7 dB at thickness of 1.6 mm is obtained for rGO-CNTs, which is better than pure carbon materials. Furthermore, this rGO-CNTs microwave absorbing materials also possess thermal sensitivity effect. The linear fitted relationship of (R-R<sub>0</sub>)/R<sub>0</sub> −temperature is found with the slope of 0.2 %/°C, showing the regular and steady trends. It indicates a highly thermal sensitive feature has great potential for intelligent absorbing materials. This study opens a novel pathway for ultrafine CNTs entangled with graphene enhancing its high-performance microwave absorption coupled with thermal sensitivity effect.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"200 ","pages":"Article 109311"},"PeriodicalIF":8.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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