Composites Science and Technology最新文献_第3页

Direct numerical simulation of fiber orientation kinetics and rheology of fiber-filled polymers in shear flow 剪切流动中纤维取向动力学和纤维填充聚合物流变学的直接数值模拟

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-10 DOI: 10.1016/j.compscitech.2025.111197

Thijs R.N. Egelmeers , Ruth Cardinaels , Patrick D. Anderson , Nick O. Jaensson

{"title":"Direct numerical simulation of fiber orientation kinetics and rheology of fiber-filled polymers in shear flow","authors":"Thijs R.N. Egelmeers , Ruth Cardinaels , Patrick D. Anderson , Nick O. Jaensson","doi":"10.1016/j.compscitech.2025.111197","DOIUrl":"10.1016/j.compscitech.2025.111197","url":null,"abstract":"<div><div>This study investigates fiber orientation kinetics and the corresponding rheology in fiber composites via direct numerical simulations in shear flow on triperiodic representative volume elements. The resulting orientation kinetics are compared to those predicted by the Folgar–Tucker model to explain the underlying mechanisms of its phenomenological parameters. Two effects are investigated in detail: (1) tangential slip on the surface of the fibers and (2) viscoelasticity of the matrix fluid. The orientation kinetics for different slip lengths are well described by the Jeffery’s equation with different effective particle aspect ratios. The orientation kinetics slow down with increasing fluid elasticity and are well described with a strain reduction factor in the Folgar–Tucker model. For these viscoelastic simulations, at high volume fractions, the rheological parameters are underpredicted by a modified Hinch and Leal model. Furthermore, distinct Folgar–Tucker parameters are required to either optimally describe the rheology or the orientation kinetics of the simulations.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111197"},"PeriodicalIF":8.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950428","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

Surface differentiation: An innovative sizing strategy to enhance the interfacial adhesion between CF and PA6 表面分化：一种创新的施胶策略，以增强CF和PA6之间的界面附着力

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-08 DOI: 10.1016/j.compscitech.2025.111223

Yining Wang, Yuxi Pan, Mingguang Zhang, Yu Deng, Zhimin Wang, Xigao Jian, Yousi Chen

{"title":"Surface differentiation: An innovative sizing strategy to enhance the interfacial adhesion between CF and PA6","authors":"Yining Wang, Yuxi Pan, Mingguang Zhang, Yu Deng, Zhimin Wang, Xigao Jian, Yousi Chen","doi":"10.1016/j.compscitech.2025.111223","DOIUrl":"10.1016/j.compscitech.2025.111223","url":null,"abstract":"<div><div>Grounded in the principle of “like dissolves like”, the development of water-soluble sizing agents characterized by matrix-like structures has emerged as a focal point of research within the interface domain. Nevertheless, the reliance exclusively on the entanglement forces between the sizing agent and the matrix is deemed inadequate. In this study, a novel water-soluble dual-component sizing agent tailored for the nylon 6 (PA6) resin matrix has been developed. By leveraging the self-emulsifying and water-soluble properties of sodium lignosulfonate (SL) and polyamic acid (PAA), these components are concurrently introduced onto the fiber surface. Following treatment, a distinct interfacial region is established on the fiber surface as a result of their interactions. Exploiting their intrinsic differences at processing temperatures facilitates differential wetting of the matrix resin on the fiber surface, consequently resulting in the formation of a “mechanical interlocking” structure between the fiber and the matrix. The findings reveal that the flexural strength and interlaminar shear strength of the modified CF/PA6 composites achieved values of 977.8 MPa and 74.1 MPa, corresponding to enhancements of 27.4 % and 28.8 %, respectively, when compared to their unmodified counterparts. This innovative sizing agent not only significantly enhances interfacial adhesion but also confers high added-value potential to lignin-derived materials, a factor that is essential for future sustainable development.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111223"},"PeriodicalIF":8.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931930","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

Simultaneous improvement of thermal stability, mechanical properties, and combustion safety in polycaprolactone via blending with a tiny amount of aramid nanofiber 通过与少量芳纶纳米纤维共混，提高聚己内酯的热稳定性、力学性能和燃烧安全性

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-05-02 DOI: 10.1016/j.compscitech.2025.111215

Yinzhou Guo , Wenchen Hu , Chenhui Cui , Jiaying Liu , Xiaoqing Ming , Qiang Zhang , Yilong Cheng , Zhishen Ge , Yanfeng Zhang

{"title":"Simultaneous improvement of thermal stability, mechanical properties, and combustion safety in polycaprolactone via blending with a tiny amount of aramid nanofiber","authors":"Yinzhou Guo , Wenchen Hu , Chenhui Cui , Jiaying Liu , Xiaoqing Ming , Qiang Zhang , Yilong Cheng , Zhishen Ge , Yanfeng Zhang","doi":"10.1016/j.compscitech.2025.111215","DOIUrl":"10.1016/j.compscitech.2025.111215","url":null,"abstract":"<div><div>Thermoplastic polyesters, polycaprolactone (PCL), are widely used in engineering and biomedical fields due to their flexibility, biodegradability, and processability. However, PCL's poor mechanical strength and thermal stability (e.g. high-temperature deformation, melt dripping) limit its applications. To address these limitations, this work develops novel aramid nanofiber (ANF)-reinforced PCL composites. By incorporating a tiny amount (2 wt%) of ANF into the PCL matrix via a banburying process, the mechanical properties and thermal stability of the composites are significantly improved. Compared with pure PCL, the tensile strength and toughness of the composites reach 35.6 MPa and 236 MJ/m<sup>3</sup>, respectively, significantly exceeding pure PCL of 21.3 MPa and 160 MJ/m<sup>3</sup>. Furthermore, the composite exhibits excellent shape stability and maintains its original shape even at 100 °C. More importantly, under combustion conditions, the composite completely avoids burning dripping observed in pure PCL, greatly improving its combustion safety. In addition, the composites still maintain the same excellent biocompatibility as PCL. Therefore, PCL@ANF composites show outstanding strength, toughness, thermal stability, providing huge potentials as high-performance biomedical engineering materials for fracture fixation applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111215"},"PeriodicalIF":8.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912076","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

Enhancement of numerical model of low-velocity impact response of fibre metal laminates by adaptation of non-homogenous cohesive zone model and microstructural anisotropy of metal layers 采用非均匀黏聚带模型和金属层微观结构各向异性对金属纤维层合板低速冲击响应数值模型的改进

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-29 DOI: 10.1016/j.compscitech.2025.111212

Patryk Jakubczak, Piotr Podolak, Katarzyna Biruk-Urban, Jarosław Bieniaś

{"title":"Enhancement of numerical model of low-velocity impact response of fibre metal laminates by adaptation of non-homogenous cohesive zone model and microstructural anisotropy of metal layers","authors":"Patryk Jakubczak, Piotr Podolak, Katarzyna Biruk-Urban, Jarosław Bieniaś","doi":"10.1016/j.compscitech.2025.111212","DOIUrl":"10.1016/j.compscitech.2025.111212","url":null,"abstract":"<div><div>This study enhances the numerical modelling of low-velocity impact (LVI) in fibre metal laminates (FMLs) by incorporating a non-homogeneous cohesive zone model (CZM) and accounting for the microstructural anisotropy of metal layers. Traditional CZM implementations often assume uniform crack energy values along fibre orientation, disregarding variations in delamination propagation paths and anisotropic properties of rolled metal sheets. To address these limitations, this research introduces an anisotropic CZM (ACZM) and an anisotropic metal layer model (AML) to improve damage prediction fidelity. The proposed approach is validated through four compared finite element analyses (FEA) of CARALL laminates subjected to LVI (conventional, and modified in terms of non-homogenous micro-mechanical properties of FML components), also comparing numerical predictions with experimental drop-weight impact tests. Results demonstrate that ACZM stabilizes force-time responses and enhances the accuracy of delamination pattern, while AML improves impact resistance predictions, though it slightly reduces laminate stiffness. A combined ACZM-AML model exhibits the lowest prediction error (nearly five percent) while maintaining computational efficiency. The study confirms that accounting for interfacial variability and metal layer anisotropy significantly refines LVI simulations, providing more accurate insights into delamination initiation and propagation in FMLs.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111212"},"PeriodicalIF":8.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900168","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

Linking microscopic network structure to macroscopic rheological properties in polydimethylsiloxane composite fluids 聚二甲基硅氧烷复合流体微观网络结构与宏观流变性能的联系

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-28 DOI: 10.1016/j.compscitech.2025.111193

Siyuan Cheng , Yimin Wei , Gaohong Lv , Xiangchao Xie , Jiahui Wang , Shujun Cai , Yabiao Ma , Jian-Bin Xu , Xiaoliang Zeng , Rong Sun

{"title":"Linking microscopic network structure to macroscopic rheological properties in polydimethylsiloxane composite fluids","authors":"Siyuan Cheng , Yimin Wei , Gaohong Lv , Xiangchao Xie , Jiahui Wang , Shujun Cai , Yabiao Ma , Jian-Bin Xu , Xiaoliang Zeng , Rong Sun","doi":"10.1016/j.compscitech.2025.111193","DOIUrl":"10.1016/j.compscitech.2025.111193","url":null,"abstract":"<div><div>Polydimethylsiloxane-based composite fluids are extensively utilized as thermal interface materials for heat dissipation of chips, due to their high thermal conductivity and distinctive rheological behaviors. However, establishing direct correlations between macroscopic rheological properties and microscopic structures has proven challenging. Here, using micron sized platelet boron nitride (BN) and spherical aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) as model fillers, we elucidate the relationship between the microscopic network structure and the macroscopic rheological properties of polydimethylsiloxane (PDMS) based composite fluids by analyzing the particle networks in conjunction with scaling theory. We find that the rheology properties of the Al<sub>2</sub>O<sub>3</sub>/PDMS composite fluids are different from those of the BN/PDMS composite fluids, where the Al<sub>2</sub>O<sub>3</sub>/PDMS composite fluids increase hyper exponentially with filling volume fraction, but the BN/PDMS composite fluids increases exponentially. The thixotropic properties reveal that the spherical Al<sub>2</sub>O<sub>3</sub> particles have high recovery rate, but the platelet BN contributes to a low recovery rate. The difference in rheological performance between BN and Al<sub>2</sub>O<sub>3</sub> stems from the interparticle forces and particle networks: BN particles surprisingly form colloidal-style clusters and particle networks, whereas Al<sub>2</sub>O<sub>3</sub> particles create a volume-repulsion-dominated jamming structure. Using these two composite fluids as thermal interface materials, we demonstrate that the BN/PDMS composite fluids capable with better dispensing operation performance and better ability of heat dissipation for chip than the Al<sub>2</sub>O<sub>3</sub>/PDMS composite fluids.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"267 ","pages":"Article 111193"},"PeriodicalIF":8.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892164","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

Ultralight, flexible, and breathable Bi-modified W18O49/MWCNTs/PAN hybrid nanofiber membrane for NIR/VIS/UV/X-ray broadband electromagnetic shielding 用于近红外/可见/紫外/ x射线宽带电磁屏蔽的bi改性W18O49/MWCNTs/PAN杂化纳米纤维膜

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-28 DOI: 10.1016/j.compscitech.2025.111211

Xin Qu , Ce Wang , Yuanyu Zhao , Jinqiu Ye , Ping Hu , Rui Zhao , Yong Liu

{"title":"Ultralight, flexible, and breathable Bi-modified W18O49/MWCNTs/PAN hybrid nanofiber membrane for NIR/VIS/UV/X-ray broadband electromagnetic shielding","authors":"Xin Qu , Ce Wang , Yuanyu Zhao , Jinqiu Ye , Ping Hu , Rui Zhao , Yong Liu","doi":"10.1016/j.compscitech.2025.111211","DOIUrl":"10.1016/j.compscitech.2025.111211","url":null,"abstract":"<div><div>Human activities, ranging from medical applications to space exploration, face significant threats from multiband electromagnetic radiation. This challenge is particularly pronounced in the complex radiation environments of space. There is an urgent need for high-efficiency, stable broadband electromagnetic shielding materials to safeguard human health and equipment safety. Herein, a Bi-modified W<sub>18</sub>O<sub>49</sub>/MWCNTs/PAN hybrid nanofiber membrane is successfully prepared by electrospinning and post-treatment. Relying on the synergistic effect of Bi, W<sub>18</sub>O<sub>49</sub>, MWCNTs, and porous structures, excellent broadband radiation protection capability is achieved: (i) Low near-infrared-visible-light (NIR-VIS) transmittance (0.62 %); (ii) Ultraviolet (UV) transmittance of only 0.012 % and UPF value as high as 2000; (iii) Mass attenuation coefficient up to 16.18 cm<sup>2</sup> g<sup>−1</sup> and attenuation ratio of 85.74 % (thickness: 4 mm) at 33 keV X-ray energy. Furthermore, porous structure and high specific surface area give the membrane ultralight density (0.36 g cm<sup>−3</sup>), flexibility, and outstanding air permeability (8.5 kg m<sup>−2</sup> d<sup>−1</sup>). Even after 2000 bends, it still maintains stable structure and performance. Meanwhile, low thermal conductivity (42.2 mW m<sup>−1</sup> K<sup>−1</sup>) and superior temperature resistance (300 °C) enable it to adapt to complex and changing environments. These advantages make the membrane highly promising for radiation protection in medical, industrial, and aerospace applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"267 ","pages":"Article 111211"},"PeriodicalIF":8.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882992","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

Self-healing of polyamide 6/cyclic olefin copolymer/carbon fiber composites under quasi-static, impact, and fatigue conditions 聚酰胺6/环烯烃共聚物/碳纤维复合材料在准静态、冲击和疲劳条件下的自修复

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-28 DOI: 10.1016/j.compscitech.2025.111213

M. Coser , D. Perin , G. Fredi , L. Aliotta , V. Gigante , A. Lazzeri , A. Dorigato , A. Pegoretti

{"title":"Self-healing of polyamide 6/cyclic olefin copolymer/carbon fiber composites under quasi-static, impact, and fatigue conditions","authors":"M. Coser , D. Perin , G. Fredi , L. Aliotta , V. Gigante , A. Lazzeri , A. Dorigato , A. Pegoretti","doi":"10.1016/j.compscitech.2025.111213","DOIUrl":"10.1016/j.compscitech.2025.111213","url":null,"abstract":"<div><div>This study investigates the self-healing capabilities of polyamide 6 (PA6) composites containing a cyclic olefin copolymer (COC) as a healing agent and a discontinuous carbon fiber (CF) reinforcement under quasi-static, impact, and fatigue loading conditions. To this aim, PA6/COC (30 wt%)/CF (20 wt%) composites were prepared via melt-compounding and injection molding. The microstructure, mechanical properties, and self-healing behavior of the composites with COC were compared with those of the reference PA6/CF (20 wt%). Although the addition of COC slightly reduces the quasi-static mechanical properties, it significantly improves the impact resistance. The presence of COC domains allow healing efficiencies (HE) of up to 80 % in impact tests, whereas lower HE values are found in quasi-static fracture tests owing to matrix plasticization hindering the COC flow in the fracture zone. Notably, fatigue testing reveals the ability of PA6/COC/CF composites to repair microdamage during thermal mending, extending their own fatigue life by 77 %, while virgin samples are not able to heal. These results highlight the potential of intrinsic self-healing thermoplastic composites to extend the service life of structural composites, particularly under cyclic loading conditions.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"268 ","pages":"Article 111213"},"PeriodicalIF":8.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928511","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

Cartilage-inspiration for constructing photothermal-driven, weather-resistant, self-healing and long-term anti-corrosion dual-layer coating 软骨-灵感用于构建光热驱动，耐候性，自修复和长期防腐的双层涂层

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-25 DOI: 10.1016/j.compscitech.2025.111207

Weixiang Xu , Hao Liu , Aihua Tang , Jia Jiang , Zewen Wu , Hanzhong Ren , Rong Jia , Yiting Xu , Birong Zeng , Conghui Yuan , Lizong Dai

{"title":"Cartilage-inspiration for constructing photothermal-driven, weather-resistant, self-healing and long-term anti-corrosion dual-layer coating","authors":"Weixiang Xu , Hao Liu , Aihua Tang , Jia Jiang , Zewen Wu , Hanzhong Ren , Rong Jia , Yiting Xu , Birong Zeng , Conghui Yuan , Lizong Dai","doi":"10.1016/j.compscitech.2025.111207","DOIUrl":"10.1016/j.compscitech.2025.111207","url":null,"abstract":"<div><div>The economic and social damages caused by steel corrosion are enormous, and the development of efficient and long-term anti-corrosion coatings has become a key challenge. The aim of this study was to develop a novel, photothermal self-repairing, intelligent, weather resistance, and anti-corrosion composite coating. In this study, cartilage-inspired tannic acid (TA)-modified MXene multifunctional filler (MT) was prepared by a hydrothermal method and combined with self-healing polyurethane (PU-SS-Salen-Ni) to form a topcoat, while epoxy resin (901) was selected as the primer. The network structure of MT endowed the polyurethane with highly efficient photo-thermal conversion ability, which could increase the local temperature of the material to more than 80 °C within 60s. It also gives the coating excellent weathering resistance. Thanks to the synergistic effect of the active anticorrosive properties of MXene, the passive anticorrosive effect of tannic acid, and the self-healing polyurethane epoxy double-layer coating on the substrate, the composites exhibited excellent anticorrosive properties (|Z|<sub>f = 0.01Hz</sub> > 1 × 10<sup>11</sup> Ω cm<sup>2</sup>) after 180 days of immersion in 3.5 % NaCl solution. Therefore, the present work successfully realized polyurethane materials with active/passive corrosion protection and self-healing functions through MT networks, and innovatively introduced and studied the organic double-layer coating structure, which provides a new solution in the field of corrosion prevention, weathering, and photo-thermal conversion self-healing.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"267 ","pages":"Article 111207"},"PeriodicalIF":8.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882991","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

Multi-functional MOF-CNT polymer aerogels: A novel design for low-frequency sound-absorbing and thermal insulation 多功能MOF-CNT聚合物气凝胶：一种低频吸声和隔热的新设计

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-25 DOI: 10.1016/j.compscitech.2025.111208

Shu-Ting Fan , Dong-Lin Guo , Jing-Li , Ye-Tao Zhang , Bang-Jing Li , Sheng Zhang

{"title":"Multi-functional MOF-CNT polymer aerogels: A novel design for low-frequency sound-absorbing and thermal insulation","authors":"Shu-Ting Fan , Dong-Lin Guo , Jing-Li , Ye-Tao Zhang , Bang-Jing Li , Sheng Zhang","doi":"10.1016/j.compscitech.2025.111208","DOIUrl":"10.1016/j.compscitech.2025.111208","url":null,"abstract":"<div><div>Absorbing low frequency sound below 500 Hz with ultra-lightweight materials is a key challenge due to the structural homogeneity of existing sound absorbing materials. In order to address the challenge of combining enhanced low frequency sound absorption, mechanical robustness, moisture resistance and thermal insulation, this study proposes a new multiple acoustic material design. Coaxial electrostatic spinning was used to introduce MOF and CNT acoustic additives into the polymer matrix in a single step. The addition of PI and directional freezing then led to the formation of radially aligned lamellar structures within the electrospun fibers and PI polymer aerogel. It was found that PI/CZ-X aerogels with a radical porous structure, nanofibres and acoustic absorbing additives with high MOF-CNT content show excellent low frequency sound absorption properties (up to 0.99 at low frequencies of 500 Hz, 0.5 at low frequencies of 200 Hz and an NRC coefficient of 0.70), excellent thermal insulation properties (thermal conductivity of approximately 24.03 mW/mK), super elasticity (deformation returns to 90 % of its original value after 1000 cycles of compression) and hydrophobic properties (water contact angle of 140°). This work provides an effective strategy to design low-frequency broadband acoustic absorption materials.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"267 ","pages":"Article 111208"},"PeriodicalIF":8.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887315","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

Process modeling and deformation prediction of 3D printed continuous fiber-reinforced composites based on in-situ micro-scale measuring 基于原位微尺度测量的3D打印连续纤维增强复合材料过程建模与变形预测

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2025-04-24 DOI: 10.1016/j.compscitech.2025.111209

Shiping Ouyang, Dongsheng Li, Weijun Zhu, Long Fu, Zhikun Zhang, Ning Wang, Quan Zhi

{"title":"Process modeling and deformation prediction of 3D printed continuous fiber-reinforced composites based on in-situ micro-scale measuring","authors":"Shiping Ouyang, Dongsheng Li, Weijun Zhu, Long Fu, Zhikun Zhang, Ning Wang, Quan Zhi","doi":"10.1016/j.compscitech.2025.111209","DOIUrl":"10.1016/j.compscitech.2025.111209","url":null,"abstract":"<div><div>3D printing of continuous fiber-reinforced thermoplastic composites (CFRTPCs) is a promising manufacturing technology. However, deformation caused by the release of residual stresses in printed parts remains unavoidable, and there is a lack of accurate and comprehensive measurements or models addressing the microscopic factors behind their formation. This paper presents in-situ measurements of process parameters related to residual stress formation, including temperature gradients, printing force fields, and deformation of printed samples. As temperature is a key factor contributing to residual stresses, this study introduces an in-situ micro-scale characterization method for the printing temperature field using temperature-sensitive prepreg filaments. The method enables accurate measurement of the full life cycle temperature data across different microscopic regions of the prepreg filament during printing. Using the measured data, including temperature, printing pressure, and tension force, this paper proposes a multi-scale process modeling method referred to as the “extrusion process-printing process combination”. This model simulates the temperature field distribution during the extrusion process, as well as the residual stress and deformation during the printing process. Simulation results were validated by experiments, with an error margin of less than 5 %. Using this model, the preliminary process optimization for reducing the residual stress was carried out. In addition, the effects of various process parameters on the temperature gradient during printing and the deformation of printed samples were analyzed. The results show that by optimizing the printing process, it is expected to reduce the generation of residual stresses in composite printed products.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"267 ","pages":"Article 111209"},"PeriodicalIF":8.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879137","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