Composites Part B: Engineering最新文献

{"title":"Impact resistance of biomimetic gradient sinusoidal composites by 3D printing: Tunable structural stiffness and damage tolerance","authors":"Junfan Shang ,&nbsp;Fei Liu ,&nbsp;Jiarui Zhang ,&nbsp;Baoning Chang ,&nbsp;Chenkai Zhu ,&nbsp;Wuxiang Zhang ,&nbsp;Yingdan Zhu ,&nbsp;Xilun Ding","doi":"10.1016/j.compositesb.2024.112016","DOIUrl":"10.1016/j.compositesb.2024.112016","url":null,"abstract":"<div><div>Taking inspiration from the remarkable impact resistance of the dactyl club of <em>Odontodactylus scyllarus</em> and utilizing the material extrusion-based 3D printing process for continuous fiber reinforced composites (CFRCs), the biomimetic gradient sinusoidal CFRCs (BGS-CFRCs) was designed and manufactured. This material combines the bidirectional sinusoidal structure with a gradient layering configuration, mimicking the natural design found in the dactyl club. Experimental tests revealed that BGS-CFRCs achieved a Charpy impact strength of up to 63.24 kJ/m², surpassing flat-layered polylactic acid (PLA) and continuous carbon fiber reinforced PLA (CCF/PLA) specimens by 143 % and 80 %, respectively. Moreover, BGS-CFRCs exhibited tunable structural stiffness and damage tolerance. This can be attributed to the innovative in-plane fiber architecture and out-of-plane material gradient, revealing the synergistic effects of composite materials, bidirectional sinusoidal structure, and gradient layering configuration. Overall, this study combines multi-degree-of-freedom 3D printing of CFRCs with biomimetic structural design, providing new dimensions of design space. This breakthrough surpasses the limitations of traditional additive manufacturing techniques and structural design of composites, opening new possibilities for developing next-generation high-performance structural materials.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112016"},"PeriodicalIF":12.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743578","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}

{"title":"An organic-inorganic interface structure for CFRP and the enhancement of mechanical properties at room/high temperature","authors":"Yuchen Tong ,&nbsp;Zhufeng Hu ,&nbsp;Wen Zhao ,&nbsp;Duo Wang ,&nbsp;Huijuan Bai ,&nbsp;Junbo Xu ,&nbsp;Chao Yang","doi":"10.1016/j.compositesb.2024.112009","DOIUrl":"10.1016/j.compositesb.2024.112009","url":null,"abstract":"<div><div>The performance of carbon fiber reinforced polymers (CFRP) depends on various factors, with particular emphasis on the intricate microscopic interface. Through the combined interface modification by nanomaterials (ZrO₂) and polyimide (PI), an organic-inorganic interface enhanced structure of CFRP with phenolic resin (PR) have been successfully devised and fabricated. The analysis encompassed the surface morphology, contact angle and surface energy of carbon fibers (CF), aimed at characterizing the interaction of grafted ZrO₂/PI on interfacial properties. Single fiber pull-out testing was employed to ascertain both the failure mode of the interface and the interfacial shear strength (IFSS). The results revealed that the surface modification augmented the IFSS by 70 %. The fortified organic-inorganic interface layer resulted in enhancements of 14 % and 15 % in tensile strength and flexural strength, respectively, in comparison to untreated CFRP. Moreover, even under high-temperature condition (300 °C), the tensile properties of modified CFRP exhibited only 22 %–26 % reduction, which demonstrated the advantages of composites in harsh environments. This can be primarily attributed to the strengthened layers of ZrO₂/PI, which securely anchored the matrix and reinforcement, thereby mitigating stress concentration in CFRP under extreme conditions.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112009"},"PeriodicalIF":12.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142758978","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}

{"title":"Enhancing the bonding reliability of titanium alloy / CFRTP hybrid joint by directionally inducing high-density covalent bond and secondary interaction via functional diblock copolymer","authors":"Jianhui Su ,&nbsp;Caiwang Tan ,&nbsp;Xinbo Wang ,&nbsp;Yifan Liu ,&nbsp;Xueyan Zhang ,&nbsp;Swee Leong Sing ,&nbsp;Bo Chen ,&nbsp;Yunhua Deng ,&nbsp;Xiaoguo Song","doi":"10.1016/j.compositesb.2024.112017","DOIUrl":"10.1016/j.compositesb.2024.112017","url":null,"abstract":"<div><div>The hybrid joint of titanium alloy (Ti–6Al–4V)/carbon fibers reinforced thermoplastic (CFRTP) has gained high interest from the industry due to lightweight. However, the bonding reliability of fabricated joints is relatively low due to the confined mechanical interlocking and weak interfacial chemical interactions, which limits its application for engineering. Herein, the novel functional poly glycidyl methacrylate-<em>b</em>-poly methacryloxy propyl trimethoxyl silane (PGMA-<em>b</em>-PMPTS) diblock copolymers were synthesized and introduced at the contact interface of Ti–6Al–4V/carbon fibers reinforced polyether-ether-ketone joints for enhancing the bonding reliability by directional induction of chemical interactions. Fourier-transform infrared spectroscopy (FT-IR) analysis and density functional theory (DFT) simulation calculation proved that both the Si–O–Ti covalent bonds and secondary interactions were successfully induced directionally at the bonding interface. The tensile-shear strength and bending strength were thus significantly improved by 341 % to 40.17 MPa and 152 % to 238.53 MPa compared with that of 9.09 MPa and 94.53 MPa in pretreated case. The bonding reliability improved gradually with the increase of molecular weight and molecular weight ratios between functional groups of PGMA-<em>b</em>-PMPTS diblock copolymers. The adhesion ratio of resin-carbon fibers mixture on failure surface increased to 89.6 % after the modification with synthesized PGMA-<em>b</em>-PMPTS diblock copolymers, which further verified the feasibility of promoting bonding strength of Ti–6Al–4V/CFRTP by inducing the high-density interfacial interactions directionally. Current work exhibits a simple yet attractive interfacial modification strategy to achieve high-reliability hybrid joints between metal and thermoplastics.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112017"},"PeriodicalIF":12.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719852","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}

{"title":"Design and manufacture of structure-function integrated carbon fiber reinforced plastics for composite construction","authors":"Zhongyuan Shi ,&nbsp;Qingxin Ma ,&nbsp;Xu Liu ,&nbsp;Yuan Li ,&nbsp;Yan Lu ,&nbsp;Wenxi Wang ,&nbsp;Qigang Han","doi":"10.1016/j.compositesb.2024.112030","DOIUrl":"10.1016/j.compositesb.2024.112030","url":null,"abstract":"<div><div>Structure-function integrated composite can replace traditional structural components to bear loads, offering an innovative solution to reduce overall weight while storing energy in aircraft composite wings. The structural electrolyte featuring high ionic conductivity and tough mechanical properties is one of the vital components to realize high-performance multifunctional structural composite batteries. Herein, a functional ternary hydrogel electrolyte (i.e., MAP electrolyte) is elaborately engineered through the strategical incorporation of multiple hydrogen bonding among polyacrylamide (PAM) with rigid-reinforcing aramid nanofibers (ANFs) and ion-conductive Ti₃C₂T_x MXene nanosheets. Accordingly, the ANFs fortify the fracture toughness and self-healing properties of MAP hydrogel, and the MXene enables a doubled ionic conductivity of MAP electrolyte (32.48 mS cm⁻¹) than that of pure PAM (16.18 mS cm⁻¹). In addition, the capacity retention of the MAP-based full cell (81.9 %) is double of the liquid electrolyte (40.6 %) within 1000 cycles at 1 A g⁻¹. Impressively, the MAP electrolyte remarkably enhances the flexural performance of structural batteries, with a flexural modulus (14.5 GPa) nearly three times that of structural batteries with liquid electrolytes (5.3 GPa) due to hydrogen-bonded ANFs. Simulation results and mechanical-electrochemical tests further underscore the imperative functions of MAP electrolyte as a structural component to empower the stiffness and maintain the integrity of structural batteries. Moreover, fabricating curved wing scaled components utilizing multi-point flexible forming technology demonstrates the practical feasibility of replacing structural components with complex shapes. This work will expedite the exploitation of structural battery prototypes and their real applications in EVs, UAVs, and electric-powered maritime vehicles.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112030"},"PeriodicalIF":12.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743533","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}

{"title":"Magnetic isocyanate-based polyimide composite foam for efficient microwave absorption","authors":"Shuangshuang Li ,&nbsp;Tiantian Ma ,&nbsp;Mingyang Zhu ,&nbsp;Yezi Lu ,&nbsp;Xinwei Tang ,&nbsp;Wei Li ,&nbsp;Wei Hong ,&nbsp;Siyuan Yang ,&nbsp;Yufei Li ,&nbsp;Penglun Zheng ,&nbsp;Xu Zhang ,&nbsp;Zicheng Wang ,&nbsp;Tianxi Liu","doi":"10.1016/j.compositesb.2024.112011","DOIUrl":"10.1016/j.compositesb.2024.112011","url":null,"abstract":"<div><div>Developing and fabricating high-performance microwave absorption materials with excellent comprehensive properties becomes an urgent necessity. In this work, a facile magnetic isocyanate-based polyimide foam with strong interfacial interaction is fabricated by vacuum-impregnating carbon nanotube (CNT)/anisotropic iron flake polyamide acid (PAA)-suspension on the surface of the skeleton. The successful loading of conductive CNT and anisotropic iron flake can facilitate the optimization of impedance matching and the generation of multiple loss mechanisms in foam, endowing it with an efficient microwave absorption performance. More importantly, self-enhancement effect of PAA as the precursor of polyimide significantly reinforces the interfacial interaction between foam and CNT/anisotropic iron flake, due to the similar molecular structure with the isocyanate-based polyimide. The strong interfacial interaction combined with their intrinsic properties further contributes to the improvement of stability and durability, such as high/low-temperature, corrosion, and flame resistance. Therefore, such excellent comprehensive performance makes it possible to become a promising defense material to be applied in harsh marine environments.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112011"},"PeriodicalIF":12.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743645","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}

{"title":"Growth factor collected cell membrane-functionalized matrix for vascular-innervated bone regeneration","authors":"Fangyu Qiao ,&nbsp;Yang Zou ,&nbsp;Yonggang Lv","doi":"10.1016/j.compositesb.2024.112019","DOIUrl":"10.1016/j.compositesb.2024.112019","url":null,"abstract":"<div><div>Peripheral nerves and blood vessels regulate the development process of bone tissue by delivering neural and vascular-related cytokines. However, challenge of preventing the loss of neural and vascular growth factors and ensuring their long-term availability for bone defects was often been overlooked. The current study designed a hybrid cell membrane with specific surface receptors for calcitonin receptor (CTR) and vascular endothelial growth factor receptor (VEGFR) through overexpressed the CTR receptor gene (<em>Calcr</em>) and the VEGFR 1 gene (<em>Flt-1</em>). The bone repair matrix functionalized by the hybrid cell membrane (GCMs) had collecting property for neurogenic growth factor (NGF) and vascular endothelial growth factor (VEGF). Furthermore, GCMs enhanced neural and vascular differentiation in mesenchymal stem cells (MSCs) and stimulated osteogenic differentiation of MSCs through neural and vascular-related paracrine signals. GCMs also facilitated the angiogenesis and neurogenesis around bone defects, further promoted the repair of rat skull defects. This study suggests a promising approach for using cell membranes to harvest growth factors for innervation and vascularization in bone reconstruction.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112019"},"PeriodicalIF":12.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719853","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}

{"title":"Dual hetero-structured Ti composites by manipulating self-assembled powder embedded with nano-reinforcements","authors":"Shuhui Feng ,&nbsp;Yuanfei Han ,&nbsp;Du Cheng ,&nbsp;Huaqiang Liu ,&nbsp;Fu Chen ,&nbsp;Jianwen Le ,&nbsp;Kang Wang ,&nbsp;Guangfa Huang ,&nbsp;Weijie Lu","doi":"10.1016/j.compositesb.2024.111999","DOIUrl":"10.1016/j.compositesb.2024.111999","url":null,"abstract":"<div><div>Traditional discontinuously micro-reinforced titanium matrix composites (DRTMCs) produced by casting or forging, are usually confronted with the strength-ductility trade-off dilemma. Their micro-scale reinforcements easily cause incompatible deformation and stress localization. Novel self-assembled composite powder embedding nano-reinforcements paired with additive manufacturing technology has great potential to address this dilemma. Here, we report a special dual-heterogeneous structure with micro-scale networks and grain size gradients. It bespoke exciting strength-ductility synergy and excellent uniform elongation surpassing the as-deposited Ti6Al4V alloy by 32 %, while manifesting a steadier strain hardening behavior. Primarily, alternating basal &lt;a&gt; and pyramidal &lt;a&gt; slips together with substantial pyramidal &lt;c+a&gt; slips induced by hetero-interfaces significantly improved the uniform deformation ability. Then geometrically necessary dislocation (GNDs) and long-range back stress induced by strain inhomogeneity remarkably enhanced the strain hardening ability. This work firstly determined the most preferred orientation relationship (OR) (58.91°/ <span><math><mrow><msub><mrow><mo>[</mo><mn>010</mn><mo>]</mo></mrow><mrow><mi>T</mi><mi>i</mi><mi>B</mi></mrow></msub></mrow></math></span>) between TiB_w and the adjoining α-Ti in as-deposited composites. These interfaces showed higher interface strength (16.42 GPa) than those with the most preferred OR of 0°/ <span><math><mrow><msub><mrow><mo>[</mo><mn>010</mn><mo>]</mo></mrow><mrow><mi>T</mi><mi>i</mi><mi>B</mi></mrow></msub></mrow></math></span> in as-forged TMCs, making more contributions to promoting the load bearing capacity of TiB_w. It provided scientific guidance for in-situ synthesizing heterogeneous structures with attractive mechanical properties in Ti composites.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 111999"},"PeriodicalIF":12.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142758940","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}

{"title":"Decoupling enhancements of breakdown strength and dielectric constant in PMIA-based composite films for high-temperature capacitive energy storage","authors":"Wenqi Zhang ,&nbsp;Xin Xu ,&nbsp;Sidi Fan ,&nbsp;Zhen Zhang ,&nbsp;Dan Wu ,&nbsp;Xiao Yang ,&nbsp;Rui Yang ,&nbsp;Kaixuan Sun ,&nbsp;Fangcheng Lv ,&nbsp;Xiang Yu","doi":"10.1016/j.compositesb.2024.112013","DOIUrl":"10.1016/j.compositesb.2024.112013","url":null,"abstract":"<div><div>Polymer-based dielectric films are increasingly demanded for capacitive energy storage. However, the negative coupling between dielectric constant (<em>ɛ</em>_r) and breakdown strength (<em>E</em>_b) presents a significant challenge to further enhancements, especially at high temperatures. Here, we propose dielectric composite films employing poly(<em>m</em>-phenylene isophthalamide) (PMIA) as the matrix, with nanodiamond (ND) particles modified by polydopamine (PDA) serving as reinforcing fillers. At 150 °C, the 1.0 wt% film demonstrates an ultrahigh discharge energy density (<em>U</em>_e) of 5.15 J/cm³ at a charge-discharge efficiency (<em>η</em>) exceeding 90 %. Even the temperature increases to 200 °C, the film maintains a desirable <em>U</em>_e of 2.36 J/cm³ with <em>η</em> &gt; 90 %, achieving a record energy storage performance that outperforms numerous previous works. In addition to the inherent hydrogen bonds among PMIA molecular chains, ND@PDA fillers, enriched with hydroxyl groups, facilitate the formation of additional hydrogen bonds with PMIA, generating a hydrogen bonding network. This network provides additional dipoles for overall polarization, enhances Young's modulus for electromechanical resistance, and suppresses dielectric loss upon temperature increase, thereby reducing conduction loss. Both experimental and simulation results indicate that this hydrogen bonding network is extremely stable at high temperatures, effectively promoting the decoupling enhancements of <em>ɛ</em>_r and <em>E</em>_b for high-temperature energy storage applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112013"},"PeriodicalIF":12.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719968","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}

{"title":"Multifunctional manganese-based nanogels catalyze immune energy metabolism to promote bone repair","authors":"Ziyan Huang ,&nbsp;Xinzhao Jiang ,&nbsp;Lichen Zhang ,&nbsp;Wei Wang ,&nbsp;Ziang Li,&nbsp;Yiyang Huang,&nbsp;Yichang Xu,&nbsp;Liang Zhou,&nbsp;Jie Wu,&nbsp;Jincheng Tang,&nbsp;Kun Xi,&nbsp;Yu Feng,&nbsp;Liang Chen","doi":"10.1016/j.compositesb.2024.112005","DOIUrl":"10.1016/j.compositesb.2024.112005","url":null,"abstract":"<div><div>Tissue regeneration during bone defect repair is regulated by the energy metabolism of macrophages. Abnormal energy metabolism can negatively affect bone repair in pathological conditions. A promising strategy involves developing biomaterials that regulate macrophage energy metabolism to coordinate immune response and bone regeneration. In this study, hollow mesoporous MnO₂, known for its excellent reactive oxygen species (ROS) scavenging and drug-loading abilities, was loaded with dexamethasone. This was followed by electrostatic self-assembly using chitosan coating to create nanogels (Alg-MD@CS). In vitro experiments showed that the nanogel effectively scavenged excess ROS, restored mitochondrial function, and reduced the levels of inflammatory factors. It downregulated glycolysis by inhibiting the ERK/HIF-1α/GLUT1 pathway, facilitating the M1-to-M2 phenotype switch to promote an anti-inflammatory and pro-regenerative ecological environment. In vivo experiments confirmed these findings. The nanogel reduced ROS levels in rats, reshaped the local immune microenvironment, and promoted bone regeneration. In summary, we developed a multifunctional nanogel for bone defect repair and demonstrated the significance and feasibility of reverse reprogramming by regulating the energy metabolism of macrophages during bone regeneration.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112005"},"PeriodicalIF":12.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700001","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}

{"title":"Investigation of two sandwich-structured nanohybrid coating derived from graphene oxide/carbon nanotube on interfacial adhesion and fracture toughness of carbon fiber composites","authors":"Qing Wu ,&nbsp;Yating Li ,&nbsp;Jun Chang ,&nbsp;Dan Jin ,&nbsp;Bolin Xiao ,&nbsp;Renjie Yao ,&nbsp;Jianfeng Zhu","doi":"10.1016/j.compositesb.2024.112007","DOIUrl":"10.1016/j.compositesb.2024.112007","url":null,"abstract":"<div><div>Designing stronger interphase towards solving the long-standing dilemma of interfacial delamination is critical for stable application of carbon fiber composites. Herein, nano-scale sandwich-structured coatings, where carbon nanotubes (CNTs) were uniformly anchored on both sides of graphene oxide (GO) layer (abbreviated as C/GO/C) and its reverse, that is double GO layers encapsulated CNT network (G/CNT/G in short), were reported around fiber periphery via vacuum filtration method. The effects of surface structure differences on interfacial shear strength (IFSS) and fracture toughness were compared in epoxy matrix. Impressively, composite incorporating G/CNT/G modified fiber delivered prominent IFSS and interfacial fracture toughness of 114.6 MPa and 137.0 J/m², 105.7 % and 279.5 % increases over control fiber composite. This strategy was also superior to C/GO/C and other reported GO and CNT related works. The main factors for maximal IFSS offered by G/CNT/G are that two GO panels enrich active sites to tightly bridge fiber and epoxy, as well as its layered feature and large surface area provide a stable “skeleton” at interphase for stress transfer. Additionally, the G/CNT/G “skeleton” is closer to sandwich structure of iris leaf, in which the porous CNT intermediate network creates larger deformation and adsorb more energy, leading to peak interfacial fracture toughness.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112007"},"PeriodicalIF":12.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743535","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}