Composites Part B: Engineering最新文献

{"title":"Compressive resistance of thin-walled pultruded GFRP profiles: The role of delamination examined through experiments and FE simulations","authors":"José Gonilha ,&nbsp;João Alfredo de Lazzari ,&nbsp;João Ramôa Correia ,&nbsp;Nuno Silvestre","doi":"10.1016/j.compositesb.2024.111929","DOIUrl":"10.1016/j.compositesb.2024.111929","url":null,"abstract":"<div><div>Significant efforts have been made in the last decades to develop design rules and guidelines for composite structures, meeting the increasing interest in pultruded glass fibre reinforced profiles (GFRP) by the construction industry. One aspect that has been difficult to address is the crushing resistance of these profiles, with previous research indicating that the design equations are not conservative, predicting much higher resistances than those obtained in experimental tests. This paper explores the possibility that crushing resistance is governed by tensile failure in the through-thickness direction of the laminates, by Poisson effect, and proposes modifications to a previously presented material damage model to account for this in finite element (FE) simulations. Compressive experimental tests were conducted in stub-column specimens, with 5 different open-section configurations, obtained from three different producers. The test results were compared to analytical and FE simulations, confirming that the former grossly overestimate the resistance, while the latter, with the proposed damage model, compare well with experimental results.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"288 ","pages":"Article 111929"},"PeriodicalIF":12.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drug-free extracellular vesicles: A spatiotemporally controlled release engineering strategy for osteogenesis and anti-inflammatory niches in rotator cuff regeneration","authors":"Guoyang Zhang ,&nbsp;Dingyi Shi ,&nbsp;Yiyao Wei ,&nbsp;Mingqi Wang ,&nbsp;Haohan Wang ,&nbsp;Zhiqi Lin ,&nbsp;Haihan Gao ,&nbsp;Weixuan Lin ,&nbsp;Hanyi Wang ,&nbsp;Yonglin Guo ,&nbsp;Yingyu Ge ,&nbsp;Yi Lin ,&nbsp;Yiwen Jiang ,&nbsp;Xiaoyu Yan ,&nbsp;Yuhao Kang ,&nbsp;Liren Wang ,&nbsp;Jinzhong Zhao ,&nbsp;Weiyang Ying","doi":"10.1016/j.compositesb.2024.111928","DOIUrl":"10.1016/j.compositesb.2024.111928","url":null,"abstract":"<div><div>Natural small-molecule drugs have promising potential to promote tissue regeneration in various fields. Therefore, maximizing drug efficiency while minimizing potential side effects is imperative. Peiminine, a natural product extracted from natural <em>Fritillaria</em>, is one of small-molecule drugs in the field of bone regeneration due to its good bone-promoting and anti-inflammatory abilities. However, its application is limited by a lack of biological activity, poor biocompatibility at high concentrations, and difficulty in achieving long-term slow-release and therapeutic effects. Extracellular vesicles (EVs) produced by preconditioned cells are considered to have special biological functions, and their potential to further retain, buffer, and transmit drug effects and expand the therapeutic effect has been widely studied. Thus, our study provides a drug-free bioengineering strategy by preconditioning bone marrow mesenchymal stem cells (BMSC) with Peiminine, then EVs, secreted as Peim-EVs, were extracted and combined with a decellularized extracellular matrix (dECM). The final EVs-dECM system with a spatiotemporally controlled release system was formed. <em>In vitro</em> studies demonstrated that Peim-EVs solved the problem of Peiminine biocompatibility and exhibited osteogenic and anti-inflammatory effects, which may be related to PI3K/AKT, MAPK/NF-κB, and Hippo signaling pathways. An <em>in vivo</em> model of rotator cuff injury in rats also showed that EVs-dECM had a good effect on rotator cuff repair. Combined with engineering strategy, this study provides verification and scenario expansion for drug application, especially for drug-free strategies that retain the biological effects of drugs, and has broad significance.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"288 ","pages":"Article 111928"},"PeriodicalIF":12.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The nitriding treatment of ternary nanofibers toward outstanding electromagnetic wave absorption performance","authors":"Xiangwei Meng ,&nbsp;Shuting Zhang ,&nbsp;Meijie Yu ,&nbsp;Chengguo Wang","doi":"10.1016/j.compositesb.2024.111922","DOIUrl":"10.1016/j.compositesb.2024.111922","url":null,"abstract":"<div><div>Beneficial from the high electrical conductivity and remarkable chemical stability, transition metal nitrides have attracted widespread attention in the employment of electromagnetic wave absorption. Toward this end, Fe₄N/zirconium dioxide/carbon nanofibers composited absorber was triumphantly prepared by the combination of electrospinning, carbonization, and subsequent nitridation. After undergoing the nitriding treatment, the emergency of Fe₄N with superior electromagnetic properties, the introduction of more defects and functional groups, and the synergistic effect between each component would dramatically intensify multiple loss mechanisms, optimize the impedance matching, and improve the wave absorbing properties. Ultimately, the ternary fibrous nanocomposite realized the minimum reflection loss of −63.7 dB at 12.5 GHz with corresponding matching thickness of 2.2 mm, and an ultrabroad bandwidth up to 7.0 GHz. Therefore, this work substantiated the promising potential of Fe₄N in the practical application of microwave absorption, and shed light on the exploitation of a new generation metal nitrides-based wave absorbents.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"288 ","pages":"Article 111922"},"PeriodicalIF":12.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539816","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":"Achieving excellent thermal transport in diamond/Cu composites by breaking bonding strength-heat transfer trade-off dilemma at the interface","authors":"Guo Chang ,&nbsp;Shuang Zhang ,&nbsp;Kaiyun Chen ,&nbsp;Wei Zhang ,&nbsp;Liang Li ,&nbsp;Yongjian Zhang ,&nbsp;Haoran Peng ,&nbsp;Dongxiao Kan ,&nbsp;Luhua Wang ,&nbsp;Hailong Zhang ,&nbsp;Wangtu Huo","doi":"10.1016/j.compositesb.2024.111925","DOIUrl":"10.1016/j.compositesb.2024.111925","url":null,"abstract":"<div><div>The heat transport enhancement of diamond/Cu composites, a new generation of thermal management materials, is trapped in the bonding strength-heat transfer trade-off dilemma at the interface due to the noticeable difference in physical and chemical properties between Cu and diamond. Herein, we propose a new strategy combining ultrathin interface modification and low-temperature high-pressure (LTHP) sintering process to prepare the diamond/Cu composites. With a suitable coefficient of thermal expansion (CTE) of &lt;10 ppm/K, the obtained diamond/Cu composites exhibit an outstanding thermal conductivity (<em>k</em>) value of 763 W/m K, over 90 % of the theoretical prediction of the differential effective medium (DEM) model. Meanwhile, using a lower diamond volume fraction (45 % vs. 50%–70 %), the <em>k</em> value is higher than those by conventional powder metallurgy, meaning a substantial reduction in the cost by reducing diamond filler content. For such a highly mismatched diamond/Cu interface, we maintain a high bonding strength by lowering the thermal stress damage while achieve a high thermal conductance (<em>G</em>) of 93.5 MW/m² K by minimizing the heat transfer obstacles. The prepared interface structure is a diamond/TiC/CuTi₂/Cu configuration, where the two possible heat transfer bottlenecks (the diamond/TiC interface and the TiC/CuTi₂ interlayer) are no longer limiting factors on the overall interface. The successful resolution to the interfacial heat transfer problem is responsible for the superior thermal transport performance of the composites. This work deals with the critical challenge for the diamond/Cu composites and offers deep insight into the improvement mechanisms of thermal transfer. The proposed strategy can be generalized to the integration of highly mismatched interfaces widely present in other composites or thermal management systems.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"289 ","pages":"Article 111925"},"PeriodicalIF":12.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655940","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":"Damage mechanisms of SiC fibers and BN interphase in SiCf/SiC composites during NITE process","authors":"Yu Zhang ,&nbsp;Xu Shen ,&nbsp;Qin Ma ,&nbsp;Shuang Mu ,&nbsp;Shaoming Dong ,&nbsp;Jinshan Yang","doi":"10.1016/j.compositesb.2024.111923","DOIUrl":"10.1016/j.compositesb.2024.111923","url":null,"abstract":"<div><div>In this work, the mechanical behavior of NITE-SiC_f/SiC composites, accompanied by the damage mechanisms of SiC fibers and BN interphase during NITE process, are investigated. The results show that the fracture characteristic of NITE-SiC_f/SiC composite is transformed from quasi-ductile mode to brittle mode with the elevating temperature, as well as severe damage of SiC fiber and BN interphase. The damage of SiC fibers is originated from high temperature, sintering aids corrosion and matrix compression. High temperature and sintering aids diffusion lead to the grain growth and strength degradation of SiC fibers. The damage of BN interphase is caused by the sintering aids corrosion, mainly the reaction of Al₂O₃, and matrix compression. The stress distribution is simulated via finite element analysis proving that up to 17.5 GPa and 17.0 GPa stress originated from matrix shrinkage during sintering process is applied to the fiber and interphase respectively, making the fiber deformation and interphase fragmentation. The degraded fiber strength and destroyed interphase structure weaken the load-bearing capacity and crack deflection ability, causing degradation of mechanical properties and reliability of composites. This work helps to comprehensively understand and optimize the properties of SiC_f/SiC composites prepared by NITE process.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"288 ","pages":"Article 111923"},"PeriodicalIF":12.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561245","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":"Unleashing the elastocaloric cooling potential of 3D-printed NiTi alloy with heterogeneous microstructures and Ni4Ti3 nanoparticles","authors":"Jianbin Zhan ,&nbsp;Ruijin Ma ,&nbsp;Liang Zhu ,&nbsp;Jiahui Fang ,&nbsp;Kun Li ,&nbsp;David Z. Zhang ,&nbsp;Lawrence E. Murr","doi":"10.1016/j.compositesb.2024.111918","DOIUrl":"10.1016/j.compositesb.2024.111918","url":null,"abstract":"<div><div>Toward the development of elastocaloric (eC) refrigeration applications, this study examines how Ni₄Ti₃ nanoparticles improve the eC properties of laser powder bed-fused (LPBF) NiTi alloys, with a focus on the formation of a NiTi/Ni₄Ti₃ nanocomposite. The LPBF-produced microstructure offers significant advantages: <em>i</em>) a heterogeneous grain structure that provides complementary benefits—fine grains offer higher deformation resistance while coarse grains initiate phase transformation (PT) earlier, releasing more latent heat; <em>ii</em>) a strong &lt;001&gt;//building direction texture that enhances recoverability. However, these benefits are partially limited by grain boundary slip during PT, leading to lower cooling efficiency and increased energy dissipation in as-built NiTi alloys. To address these issues, Ni₄Ti₃ nanoparticles are introduced through aging treatment, forming a composite structure that strengthens grain boundaries. Given the challenges of applying severe plastic deformation to 3D-printed components, this approach may offer a more practical solution. The study also reveals that Ni₄Ti₃ nanoparticles contribute to: <em>1</em>) reducing Ni content in the matrix, increasing lattice size and enthalpy, which enhances the temperature drop (<em>ΔT</em>_<em>ad</em>); and <em>2</em>) promoting R phase formation, which hinders the B2↔B19’ PT, reducing energy dissipation and improving the coefficient of performance (<em>COP</em>_<em>mat</em>). The balance of these effects depends on nanoparticle size, with smaller particles (∼5–12 nm) amplifying the second effect, while larger particles (∼130 nm) increase the first effect. At 350 °C aging, the optimized nanocomposite exhibits a maximum <em>COP</em>_<em>mat</em> of 15 and <em>ΔT</em>_<em>ad</em> of 14K, representing a 163 % improvement over the as-built alloy. This work highlights the potential of NiTi composites in 3D-printed eC components.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"288 ","pages":"Article 111918"},"PeriodicalIF":12.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561246","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":"Temperature-controlled in-situ construction of composition-tunable nanoparticle-decorated SOFC cathodes with enhanced oxygen reduction kinetics and CO2 tolerance","authors":"Chuangang Yao ,&nbsp;Baixi Xia ,&nbsp;Haixia Zhang ,&nbsp;Haocong Wang ,&nbsp;Wenwen Zhang ,&nbsp;Xiaoshi Lang ,&nbsp;Kedi Cai","doi":"10.1016/j.compositesb.2024.111917","DOIUrl":"10.1016/j.compositesb.2024.111917","url":null,"abstract":"<div><div>High oxygen reduction reaction (ORR) catalytic activity and CO₂ resistance of the cathode are fundamental to the commercial application of solid oxide fuel cells (SOFCs). Therefore, we develop a temperature-driven reduction-reoxidation strategy to in-situ construct heterostructured perovskite cathodes decorated with different nanoparticles by controlling the reduction temperature. For (Pr_0.4Sr_0.6)_0.95Co_0.2Fe_{0.8-<em>x</em>}Ni_<em>x</em>O_{3-<em>δ</em>} (PSCFN, <em>x</em> = 0.05, 0.1), reduction (@700 °C)-reoxidation results in the exsolution of a Co_<em>m</em>Fe_<em>n</em>Ni_{3-<em>m</em>-<em>n</em>}O₄ spinel phase on the perovskite scaffold surface, while reduction (@750 °C)-reoxidation leads to the formation of both Co_<em>m</em>Fe_<em>n</em>Ni_{3-<em>m</em>-<em>n</em>}O₄ spinel phase and NiO nanoparticles. The exsolution of these highly active species increases the quantity of oxygen reduction active sites and effectively suppresses Sr segregation. The simultaneous formation of Co_<em>m</em>Fe_<em>n</em>Ni_{3-<em>m</em>-<em>n</em>}O₄ spinel phase and NiO nanoparticles induces B-site ion vacancies in the main phase, therefore facilitates the formation of oxygen vacancies. Additionally, the presence of Co_<em>m</em>Fe_<em>n</em>Ni_{3-<em>m</em>-<em>n</em>}O₄/NiO/PSCFN heterointerfaces promotes oxygen adsorption and transfer. The strong interactions among Co_<em>m</em>Fe_<em>n</em>Ni_{3-<em>m</em>-<em>n</em>}O₄, NiO, and PSCFN significantly enhance the structural stability. At 800 °C, Reo2-PSCFN0.1 achieves an output performance of 1.12 W cm⁻², representing a 36.6 % enhancement compared to PSCFN0.1. Moreover, the Rp of Reo2-PSCFN0.1 is merely 0.0186 Ω cm², marking a 40.4 % decrease relative to PSCFN0.1. This temperature-driven reduction-reoxidation strategy shows great promise as a novel approach for creating high-performance IT-SOFC cathodes.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"288 ","pages":"Article 111917"},"PeriodicalIF":12.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552745","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":"Modeling and measurements of creep deformation in a ceramic fiber reinforced metal matrix composite","authors":"Xu Kong,&nbsp;Yumin Wang,&nbsp;Qing Yang,&nbsp;Rui Yang","doi":"10.1016/j.compositesb.2024.111926","DOIUrl":"10.1016/j.compositesb.2024.111926","url":null,"abstract":"<div><div>This study proposes a novel analytical model for creep deformation in long brittle fiber-reinforced metal matrix composites. Unlike traditional creep models based on the steady-state creep expression of the creep behavior for the matrix in the composite, this model addresses the unsteady-state creep behavior. It also highlights the similarity between the governing equations for creep testing of the composite and stress relaxation testing of the unreinforced matrix. Owing to load transfer from the creeping matrix to the rigid fiber during the creep process, the matrix experiences decreasing stress and theoretically never reaches a steady state. Creep tests are conducted on a SiC fiber-reinforced Ti–6Al–2Sn–4Zr–2Mo-0.1Si alloy composite, within a stress range of 1100∼1350 MPa at 500 °C, with strain variation measured by an extensometer. Experimental results reveal significant discrepancies between the observed data and predictions based on steady-state creep assumptions. The differences between previous models and the proposed model are discussed using the experimental data.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"289 ","pages":"Article 111926"},"PeriodicalIF":12.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655908","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 admixed silicone emulsion on water and chloride transport properties of concrete","authors":"Fengjiang Li ,&nbsp;Yu Fu ,&nbsp;Jiangwei Zhu ,&nbsp;Yuchen Wu ,&nbsp;Jie Hu ,&nbsp;Haoliang Huang ,&nbsp;Fanghua Lei ,&nbsp;Jiangxiong Wei ,&nbsp;Qijun Yu","doi":"10.1016/j.compositesb.2024.111916","DOIUrl":"10.1016/j.compositesb.2024.111916","url":null,"abstract":"<div><div>The addition of silicone is effective method for improving both surface and internal hydrophobicity of concrete, thus clarifying its effect on transport property of concrete is very important. In this study, both water and chloride transport properties of concrete incorporated with three silicone emulsions based on different active ingredients (silane oligomers or silane monomers) were evaluated and investigated. The results show that all three silicone emulsions exhibit no obvious negative effect on hydration and microstructure of cement paste; however, the admixed silicone emulsions increase both the thickness and porosity of ITZ in concrete. Therefore, the admixed silicone emulsions result in reduced compressive strength of concrete. Further, the incorporated silicone emulsions efficiently increase surface and internal water contact angle of concrete, thus mitigating both water absorption and chloride transport in concrete. Due to more pronounced interaction between silane oligomers and hydration products based on molecular dynamics simulation, the beneficial effect on improving hydrophobicity of concrete and halting water and chloride transport is more significant for the admixed silicone emulsion with silane oligomers as active ingredient.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"288 ","pages":"Article 111916"},"PeriodicalIF":12.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552744","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 novel mechanism to accelerate stress relaxation of toughened blends: Stress-induced core-shell morphological reconstruction and its application in thermoforming and dimensional stabilization","authors":"Jielong Lin ,&nbsp;Shibing Ye ,&nbsp;Yong Zhang ,&nbsp;Xiaoyun Yang ,&nbsp;Jiqing Liu ,&nbsp;Long Chen ,&nbsp;Hongyao Xu","doi":"10.1016/j.compositesb.2024.111910","DOIUrl":"10.1016/j.compositesb.2024.111910","url":null,"abstract":"<div><div>Improving thermoforming efficiency and dimensional stability in thermoplastic products is a common challenge. This study investigates toughened polyamide 612 (PA612) blends made by adding maleic anhydride-functionalized SEBS (mSEBS) elastomers, along with high-density polyethylene (HDPE), polyphenylene Oxide (PPO), and polyphenylene Sulfide (PPS). Analyses showed that mSEBS forms a core-shell structure with HDPE or PPO and a sea-island structure with PPS in the PA612 matrix. The study uniquely examines how these structures affect stress relaxation. The results, modeled by a steady-state creep model, revealed that the core-shell structures reduced the characteristic relaxation time (λ) by over three orders of magnitude compared to PA612/mSEBS blends. Additionally, PA612/mSEBS/HDPE blends were more temperature-sensitive, reducing λ by six orders of magnitude compared to PA612/mSEBS/PPO blends. Further analysis showed that stress-induced core-shell morphological reconstruction (SCMR) significantly improved stress relaxation by promoting extensive plastic deformation and energy dissipation. These toughened PA612 blends exhibited excellent thermoforming efficiency and dimensional stability. A 3D finite element model confirmed SCMR as an effective strategy for stress relaxation, providing valuable insights for designing toughened blends with superior processing efficiency and stability.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"290 ","pages":"Article 111910"},"PeriodicalIF":12.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659429","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}