Composites Science and Technology最新文献

{"title":"Data-driven engineering and analysis of polymer composites with high thermal conductivity","authors":"Chaeseong Na ,&nbsp;Sangsoo Shin ,&nbsp;Donghun Lee ,&nbsp;Yeomyung Yoon ,&nbsp;Suk-kyun Ahn ,&nbsp;Hyosung An ,&nbsp;Jaegeun Lee ,&nbsp;Chae Bin Kim","doi":"10.1016/j.compscitech.2025.111400","DOIUrl":"10.1016/j.compscitech.2025.111400","url":null,"abstract":"<div><div>The inherent stochastic nature of the structure–property relationships in polymer composites has long posed a challenge, making accurate prediction and optimization nearly impossible. To address this issue, a data-driven engineering approach is presented for designing polymer composites with exceptionally high thermal conductivities (TCs) using polydimethylsiloxane and spherical alumina particles as the model matrix and filler, respectively. Bayesian optimization is performed to determine the optimal composition of spherical alumina fillers with average diameters of 90, 20, 3, and 0.6 μm. The resulting composite exhibits optimized filler packing and a TC of approximately 6.89 W m⁻¹ K⁻¹, surpassing previously reported values. High-resolution 3D X-ray computed tomography combined with quantitative structural analysis further reveals that microstructural features, such as particle connectivity and interfacial characteristics, critically influence the TC of the composite. These findings highlight the effectiveness of machine learning–driven optimization and advanced imaging techniques in capturing the probabilistic nature of composite behavior, enabling the development of high-performance thermal interface materials with enhanced TC, mechanical strength, and reduced thermal expansion.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111400"},"PeriodicalIF":9.8,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227312","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":"Enhanced self-lubricating and wear-resistance of epoxy composites synergistically reinforced by HBPSi and MXene/WS2 heterostructured filler","authors":"Zhengyan Chen ,&nbsp;Zhou Lan ,&nbsp;Wei Huang ,&nbsp;Penggang Ren ,&nbsp;Hongxia Yan ,&nbsp;Zhengzheng Guo ,&nbsp;Yanling Jin ,&nbsp;Zhenfeng Sun","doi":"10.1016/j.compscitech.2025.111397","DOIUrl":"10.1016/j.compscitech.2025.111397","url":null,"abstract":"<div><div>Despite the evident potential of layered MXene and WS₂ as lubricant additives for epoxy (EP) resin, their practical applications are significantly hindered by inadequate interfacial adhesion with the EP matrix. Herein, hyperbranched polysiloxane with hydroxyl terminal groups (HBPSi–OH) was synthesized, which serves as a “bridge” agent to improve the interfacial adhesion between heterostructured MXene/WS₂ filler and EP resin. Then, HBPSi and MXene/WS₂ hybrids were incorporated into EP as toughening agents and lubricant additives to fabricate composites. Benefiting from enhanced interfacial bonding strength, prominent toughening effect of HBPSi, “soft-rigid” synergy of HBPSi and MXene/WS₂, the MXene/WS₂/HBPSi/EP (MWH/EP) composites exhibited remarkable mechanical and tribological properties. Notably, compared with pristine EP, 0.6 wt% MXene/WS₂-1/4 wt% HBPSi/EP composite demonstrated significant increases of 74.6 % and 48.3 % in impact and flexural strengths. The average coefficient of friction reaches the lowest value of 0.30, concomitant with a reduction in the volumetric wear rate exceeding 97 %. This study offers significant contributions to the advancement of high-performance solid lubricant additives for polymeric composites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111397"},"PeriodicalIF":9.8,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227314","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":"Gallium-infused carbon fiber/EVA multilayer composites with sensing, self-healing, and electromagnetic attenuation capabilities","authors":"Jinfeng Cai ,&nbsp;Jinchuan Liu ,&nbsp;Hangsheng Weng ,&nbsp;Shuiyan Liu ,&nbsp;Dezhi Zhu ,&nbsp;Guanda Yang ,&nbsp;Jian Liu ,&nbsp;Li Zhou ,&nbsp;Muchao Qu","doi":"10.1016/j.compscitech.2025.111398","DOIUrl":"10.1016/j.compscitech.2025.111398","url":null,"abstract":"<div><div>In this study, a multilayer flexible composite membrane (<strong><em>EVA/Ga@CF</em></strong>) was developed by constructing a stable liquid metal conductive network on continuous carbon fiber fabrics. Mechanical testing revealed that <strong><em>EVA/Ga@CF</em></strong> achieved a tensile strength of 2.1 GPa and a Young's modulus of 12.6 GPa, confirming the critical role of liquid gallium in interfacial bridging and stress transfer. Self-healing evaluation showed that the water contact angle at scratched regions returned to its initial value within 120 s subjected to electrical stimulation. Electromagnetic performance tests indicated that <strong><em>EVA/Ga@CF</em></strong> maintained a total shielding effectiveness (SE-T) of approximately 35 dB across the X-band (8.2–12.4 GHz), achieving superior efficiency in both thickness-normalized and metal content-normalized metrics. Furthermore, the introduction of the continuous liquid gallium network significantly enhanced dielectric polarization and electromagnetic wave attenuation capabilities. Overall, this work proposes a new strategy for co-engineering liquid metals and high-strength carbon fiber frameworks, highlighting their potential for applications in high-performance flexible electronics and robotic exoskeleton systems.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111398"},"PeriodicalIF":9.8,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227313","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":"A size effect model for predicting in-plane mechanical isotropy of triaxial woven composite strips","authors":"Bo Song ,&nbsp;Guochang Lin ,&nbsp;Xudong Huang ,&nbsp;Xueyan Chen ,&nbsp;Shaozhu Liu ,&nbsp;Huifeng Tan","doi":"10.1016/j.compscitech.2025.111399","DOIUrl":"10.1016/j.compscitech.2025.111399","url":null,"abstract":"<div><div>Two-dimensional triaxial woven fabrics (TWF) and corresponding composites (TWFC) exhibit advantages such as in-plane quasi-isotropy, lightweight, and high dimensional stability, making them ideal materials for space-deployable structures. However, the quasi-isotropy behavior of these materials exhibits pronounced size-dependent characteristics at finite dimensions, posing challenges for accurate prediction using conventional unit cell models. This study investigates the size effect on the tensile properties in TWF systems under various loading orientations. By integrating elastic mechanics theory with analytical geometry, a novel mechanical model is established to quantify the relationship among specimen dimensions, tensile modulus and loading angles. The model reveals the mechanical response governed by local constraints from fiber bundles. Additionally, it quantifies the strengthening effects of the woven architecture on macroscopic mechanical behavior. Theoretical derivation reveals a three-stage size effect in the mechanical response, delineated by two critical aspect ratio thresholds. For aspect ratios below <span><math><mrow><mn>1</mn><mo>/</mo><msqrt><mn>3</mn></msqrt></mrow></math></span>, the quasi-isotropic properties virtually vanished in both TWF and TWFC rectangular specimens. Between aspect ratios of <span><math><mrow><mn>1</mn><mo>/</mo><msqrt><mn>3</mn></msqrt></mrow></math></span> and <span><math><mrow><msqrt><mn>3</mn></msqrt></mrow></math></span>, quasi-isotropy progressively improved with increasing aspect ratio. For aspect ratios exceeding <span><math><mrow><msqrt><mn>3</mn></msqrt></mrow></math></span>, TWF samples achieved peak quasi-isotropic behavior, whereas TWFC exhibited continuous enhancement. Furthermore, uniaxial tensile experiments and finite element simulations validate the model's precision, showing a deviation of less than 5 %. This model addresses the limitation of the representative volume element analytical method which neglects boundary effects, providing a theoretical tool for the coordinated design of material and dimensions in aerospace deployable structures such as space-deployable antennas.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111399"},"PeriodicalIF":9.8,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227253","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":"Effect of low temperature on the mechanical properties and failure characteristics of an infused non-crimp fabric glass fiber-reinforced reactive thermoplastic","authors":"Erli Shi,&nbsp;John Montesano","doi":"10.1016/j.compscitech.2025.111396","DOIUrl":"10.1016/j.compscitech.2025.111396","url":null,"abstract":"<div><div>Fiber-reinforced reactive thermoplastic composites have emerged as promising candidates for primary load-bearing structures such as wind turbine blades, where extremely low service temperatures place significant demands on structural integrity. While the effect of low temperature on the behaviour of epoxy-based composites has been previously studied, analogous investigations of reactive thermoplastic composites and comparisons between material systems remain limited. In this work, the mechanical performance and failure characteristics of vacuum-infused unidirectional non-crimp glass fiber/reactive thermoplastic composites (NCF-GF/acrylic) were investigated and compared with epoxy-based counterparts (NCF-GF/epoxy) at room and low temperatures (i.e., −50 °C) under different tensile and shear loading modes. Both materials exhibited nearly linear elastic longitudinal tensile behaivour, with strength increasing 8–9 % and failure characterized by greater tow splitting crack density at low temperature (LT). Both materials also showed a pronounced nonlinear transverse tensile response, with strain at failure increasing by approximately 50 % at LT, mainly due to an increased density of tow cracks. The NCF-GF/acrylic exhibited increased supporting fiber yarn splitting/breakage and reduced fiber tow bridging at LT, distinct from NCF-GF/epoxy. Both materials exhibited a notable reduction in nonlinear shear response, accompanied by increases in shear strength and modulus of approximately 24 % and 51 % for the NCF-GF/acrylic and 45 % and 35 % for the NCF-GF/epoxy, respectively, with the NCF-GF/acrylic once again transitioning from ductile to brittle failure. This study provides the first understandings into the LT behaviour of reactive thermoplastic-based composites under various loading modes, offering guidance for optimizing performance in extreme environments.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111396"},"PeriodicalIF":9.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227316","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":"Plasma-textured bamboo metamaterials with tree frog-inspired hierarchical topography and self-healing interface for synergistic acoustics","authors":"Yinxuan Li,&nbsp;Guotao Liang,&nbsp;Mingpeng Li,&nbsp;Ying Zhu,&nbsp;Jingtian Wu,&nbsp;Haitao Cheng","doi":"10.1016/j.compscitech.2025.111394","DOIUrl":"10.1016/j.compscitech.2025.111394","url":null,"abstract":"<div><div>Natural bamboo fiber (BF) composites offer a sustainable alternative to non-biodegradable synthetic polymers (e.g., polypropylene, PP) in noise control, yet face dual challenges: disordered surface morphology limits acoustic energy conversion, and weak fiber-matrix interfacial bonding induces performance degradation. Inspired by the multi-scale sound-dissipation architecture of tree frog skin (micro-papillae attenuating 3000–5000 Hz noise and nanofolds reducing reflectivity by 62 %), we propose a cross-scale synergistic strategy integrating plasma-induced surface reconstruction (300W/180s/O₂) and covalent-supramolecular dual-network (DCN-PEI) interfacial engineering. Plasma treatment constructs “groove-particle” hierarchical structures (groove depth: 1.2 ± 0.3 μm, particle diameter: 80 ± 20 nm), while KH550 silanization forms Si–<em>O</em>–C bonds increasing the contact angle to 111.1° ± 2.3°, mimicking the hydrophobic barrier function of glycoprotein mucus. The biomimetic composite achieves: 1) Record-high sound absorption coefficient (SAC) (α = 0.82 ± 0.03 at 2000–4000 Hz, 35 % enhancement vs. untreated BF); 2) Ultrahigh transmission loss (&gt;55 dB at 1000–6300 Hz, thickness: 6 mm, density: 0.5 g/cm³), outperforming palm fiber by 42 % in SAC and commercial PP board by 2.6-fold in noise reduction (29.6 dB vs. 11.6 dB); 3) Self-healing functionality with 34 % ± 3 % scratch depth recovery via dynamic H-bonds and transesterification. This work pioneers cross-scale integration of biological acoustic mechanisms and self-repair, establishing a “morphology-interface-function” trilevel design paradigm for sustainable acoustics.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111394"},"PeriodicalIF":9.8,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227315","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":"Low-dielectric and hydrophobic thermotropic liquid crystalline polyester composites reinforced with hollow glass microspheres for next-generation electronic board materials","authors":"Jun-Hyeop Lee,&nbsp;Ya-Rin Shin,&nbsp;Gyeong-Ig Hwang,&nbsp;Shinwoo Lee,&nbsp;Jongho Moon,&nbsp;Young Gyu Jeong","doi":"10.1016/j.compscitech.2025.111395","DOIUrl":"10.1016/j.compscitech.2025.111395","url":null,"abstract":"<div><div>In this study, composites based on thermotropic liquid crystalline polymers (TLCP) and incorporated with hollow glass microspheres (HGM) were prepared via a melt compounding technique facilitated by masterbatch dilution, followed by subsequent shaping through injection molding. The influence of HGM loading (2–10 wt%) on the microstructure, thermal behavior, rheological and mechanical properties, dielectric performance, and hydrophobicity of the composites was comprehensively investigated. Electron microscopy and infrared spectroscopy confirmed uniform dispersion of HGM and strong interfacial hydrogen bonding with the TLCP matrix. X-ray diffraction revealed that HGM disrupts TLCP crystallinity, while differential scanning calorimetry demonstrated a decrease in crystallization and melting temperatures with increasing filler content. Thermogravimetric analysis showed excellent thermal stability, with char yields increasing from 38.2 % for neat TLCP to 48.8 % for TLCP/HGM10. Rheological testing revealed enhanced melt viscosity and viscoelastic moduli, and dynamic mechanical analysis indicated restricted chain mobility and increased glass transition temperatures. Importantly, the dielectric constant (<em>D</em>_k ∼2.43) and loss (<em>D</em>_f ∼0.0284) at 2 MHz decreased by approximately 20 % and 59 %, respectively, for TLCP/HGM10 compared to neat TLCP, and these experimental values correlated well with theoretical predictions based on the Maxwell-Garnett model. Water contact angle tests further showed improved surface hydrophobicity, increasing from 77.4° to 88.8° with HGM addition. These results collectively demonstrate that the incorporation of HGM simultaneously enhances the thermal, dielectric, and moisture-resistance characteristics of TLCP composites, making them promising candidates for high-frequency and moisture-resilient electronic applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111395"},"PeriodicalIF":9.8,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155618","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":"Thermally conductive and electromagnetic interference shielding polydimethylsiloxane composites with vertically oriented carbon fibers obtained by gravity-magnetic actuation","authors":"Jinlong Wang,&nbsp;Yonggang Shangguan,&nbsp;Qiang Zheng","doi":"10.1016/j.compscitech.2025.111393","DOIUrl":"10.1016/j.compscitech.2025.111393","url":null,"abstract":"<div><div>With the rapid advancement of the highly integrated microelectronics industry, the growing demand for composite materials that offer both high thermal conductivity and effective electromagnetic interference (EMI) shielding to ensure the long-term stability of electronic devices is becoming increasingly significant. However, achieving high through-plane thermal conductivity remains challenging due to the difficulty in establishing continuous thermal conduction pathways through the composite thickness. In this work, polydimethylsiloxane (PDMS) composites with vertically oriented Carbon fiber (CF) structures were successfully fabricated through cast molding and gravity-magnetic field co-induced CF alignment. At 23.5 vol% CF content, the composite exhibits a through-plane thermal conductivity of 12.26 W/(m⋅K), a thermal conductivity enhancement (TCE) of 7500 %, and an electromagnetic interference shielding efficiency (EMI SE) of 27.9 dB. In addition, the influences of CF content on the anisotropic thermal conductivity and EMI shielding properties of the composites were examined. This CF/PDMS composites with vertically aligned CF structures have a broad range of potential applications in thermal management and EMI shielding, such as thermal interface materials in high-power chips, LEDs, 5G RF modules.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111393"},"PeriodicalIF":9.8,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155620","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":"Enhanced dielectric and energy storage performance of polyetherimide doping with molecular semiconductor all-organic composites","authors":"Mingyang Zhang ,&nbsp;Likun Zang ,&nbsp;Hui Tong ,&nbsp;Fuyuan Liu","doi":"10.1016/j.compscitech.2025.111391","DOIUrl":"10.1016/j.compscitech.2025.111391","url":null,"abstract":"<div><div>Polyetherimide (PEI), as a kind of high-temperature dielectrics, still face the issue of current leakage under thermo-electrical coupling fields, leading to a sharp degradation of energy storage performance. In this study, an intrinsic PEI with superior comprehensive properties was synthesized using <strong>4,4'-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride) (BPADA)</strong> and <strong>2,2-bis[4-(4-aminophenoxy)phenyl] propane (BAPP)</strong>. Through molecular design, an \"electron gate\" mechanism was introduced via <strong>σ-π hyperconjugation effects</strong>, effectively suppressing long-range charge delocalization. The resulting intrinsic PEI achieves an energy storage density (<strong><em>U</em>_d</strong>) of <strong>1.93 J/cm³ at 150 °C</strong>, which is <strong>20.6 % higher</strong> than that of commercial Ultem™ PEI film (1.6 <strong>J/cm³</strong>). Further modification was conducted by doping with three molecular semiconductors: 3,4,9,10-perylenetetracarboxylic diimide <strong>(PTCDI), 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA), and 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA). Density Functional Theory (DFT)</strong> simulations and <strong>Low-Energy Inverse Photoemission Spectroscopy (LEIPS)</strong> experiments reveal that all three semiconductors exhibit <strong>higher electron affinity</strong> than the intrinsic PEI. Additionally, Thermally Stimulated Depolarization Current (TSDC) reveals that the incorporation of molecular semiconductors increases trapped charges and trap energy level compared to intrinsic PEI. Both experimental and simulation results consistently demonstrate that molecular semiconductor doping can enhance energy storage performance by constructing deep trap sites within the PEI matrix. Experimental results demonstrate that at 150 <strong>°C,</strong> the 0.125 % PTCDI-doped PEI achieves a breakdown strength of 545 MV/m, an <strong><em>U</em>_d</strong> of 3.71 J/cm³, and a charge-discharge efficiency <strong>(</strong><em>η</em><strong>)</strong> of 90.13 % (vs. 436 MV/m, 1.93 J/cm³, and 94.67 % for intrinsic PEI). This research provides an effective strategy for improving the capacitive performance of polymer dielectrics under thermo-electrical coupling conditions.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111391"},"PeriodicalIF":9.8,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155619","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":"Continuous construction of gradient modulus interphase in CF/PA6 composites with enhanced interfacial properties and reduced porosity","authors":"Guang Yang ,&nbsp;Jinze Cui ,&nbsp;Kewen Zeng ,&nbsp;Yutai Luo ,&nbsp;Feng Bao ,&nbsp;Jiali Yu ,&nbsp;Caizhen Zhu ,&nbsp;Jian Xu ,&nbsp;Huichao Liu","doi":"10.1016/j.compscitech.2025.111392","DOIUrl":"10.1016/j.compscitech.2025.111392","url":null,"abstract":"<div><div>Chopped ultra-thin carbon fiber tape reinforced polyamide 6 (PA6) composites are considered promising materials for balancing the mechanical properties and ease of processing, particularly due to their in-plane quasi-isotropy, which facilitate structural design and manufacturing in the industry. However, further advancement is hindered by the weak interfacial bonding and modulus mismatch between carbon fiber (CF) and PA6 matrix, as well as high porosity of the CF/PA6 composites. In this work, plasma treatment and mixed COOH-carbon nanotubes (CNTs)/PA6 sizing methods are proposed to enhance the surface roughness (Ra) and surface energy of the CF. Compared to untreated CF, the Ra value and surface energy of the modified CF increased by 45.1 % and 69.7 %, respectively. After 0.6 wt% COOH-CNTs modification, the tensile strength, Young's modulus, and interlaminar shear strength (ILSS) of the composites reach 900.0 MPa, 48.4 GPa, and 62.3 MPa, which are respectively 24.9 %, 19.8 %, and 36.9 % higher than those of the unmodified composites. In particular, the porosity is reduced to 1.22 %, which is 73.3 % lower than that of unmodified composites. Moreover, the <span><span><span>[email protected]</span></span><svg><path></path></svg></span> wt% CNT/PA6 composites exhibit mitigatory modulus gradient across the interphase. This work synergistically enhances the interface adhesion and reduces the porosity of the CF/PA6 composites via a large-scale continuous modification technology.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"272 ","pages":"Article 111392"},"PeriodicalIF":9.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155710","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}