Composites Science and Technology最新文献_第4页

Recyclable and highly thermally conductive nanocomposite with binary thermally conductive networks constructed from boron nitride nanoribbons and nanosheets 由氮化硼纳米带和纳米片构建的具有二元导热网络的可回收高导热纳米复合材料

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-11-04 DOI: 10.1016/j.compscitech.2024.110954

Liyuan Guo , Lei Feng , Caiyue Huang , Qiang Song , Peng Wei , Dongfang Xu , Mengdan Hou , Haojie Song

{"title":"Recyclable and highly thermally conductive nanocomposite with binary thermally conductive networks constructed from boron nitride nanoribbons and nanosheets","authors":"Liyuan Guo , Lei Feng , Caiyue Huang , Qiang Song , Peng Wei , Dongfang Xu , Mengdan Hou , Haojie Song","doi":"10.1016/j.compscitech.2024.110954","DOIUrl":"10.1016/j.compscitech.2024.110954","url":null,"abstract":"<div><div>Technological advances have accelerated the development of high-performance insulation-based Thermal Interface Materials (TIMs), leading to increased generation of electronic waste. A significant challenge is the development of recyclable TIMs with superior thermal conductivity. Hemiaminal dynamic covalent network (HDCN) polymers are considered as an ideal matrix material for recyclable TIMs due to their high degradability at low pH (pH < 2). In this work, binary thermally conductive paths of hexagonal boron nitride nanoribbons (BNNRs) and boron nitride nanosheets (BNNSs) are introduced into the HDCN to improve the thermal conductivity of HDCN without sacrificing its electrically insulating properties. The functional BNNSs (f-BNNSs) are attached onto the surfaces of BNNRs to achieve the homogeneous distribution of nanosheets within the HDCN. Benefiting from the binary thermally conductive paths, an excellent in-plane thermal conductivity of 3.12 W m<sup>−1</sup>K<sup>−1</sup> for BNNS-BNNR/HDCN nanocomposite is achieved at a BN loading of 14 wt% (containing 2 wt% BNNRs and 12 wt% f-BNNS), increased by 1299 % comparing to the pure HDCN polymer, as well as superior to those reported for polymer composites with similar loading of BNNRs or BNNSs. Additionally, the nanocomposite demonstrated efficient recyclability of BNNSs and BNNRs hybrid fillers in an acidic environment (pH < 2) at 25 °C with a recycling efficiency of 82 %. Notably, the nanocomposite exhibited noteworthy electrical insulation properties. This study demonstrates the potential of BNNS-BNNR/HDCN as a recyclable TIMs and provides a new idea for the future research and development of recyclable high performance TIMs.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110954"},"PeriodicalIF":8.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586328","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

Room-temperature ionic liquid electrolytes for carbon fiber anodes in structural batteries 用于结构电池中碳纤维阳极的室温离子液体电解质

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-11-03 DOI: 10.1016/j.compscitech.2024.110952

Lakshmi Surag Singavarapu , Paul Gilmore , Jun Wei Yap , Yehia Khalifa , Umesh Gandhi , Timothy S. Arthur , Jay Sayre , Jung-Hyun Kim

{"title":"Room-temperature ionic liquid electrolytes for carbon fiber anodes in structural batteries","authors":"Lakshmi Surag Singavarapu , Paul Gilmore , Jun Wei Yap , Yehia Khalifa , Umesh Gandhi , Timothy S. Arthur , Jay Sayre , Jung-Hyun Kim","doi":"10.1016/j.compscitech.2024.110952","DOIUrl":"10.1016/j.compscitech.2024.110952","url":null,"abstract":"<div><div>Structural batteries require thermally stable electrolytes paired with carbon fibers (CFs), which offer advantages of lightweight, high mechanical strength, and good electrical conductivity. This work evaluated various room-temperature ionic-liquids (RTILs) as compatible electrolytes for CF anodes and LiFePO<sub>4</sub> (LFP) cathodes on CFs. This LFP/CF full-cell design eliminates Cu and Al current-collectors, potentially enhancing gravimetric energy and reducing costs. Among various RTILs, LiTFSI in N-propyl-N-methylpyrrolidinium (PYR13) – bis(fluorosulfonyl)imide (FSI) offered promising LFP/CF full-cell performances, attributed to the formation of solid electrolyte interphase (SEI) layer on the CF anode with components such as Li<sub>2</sub>S<sub>x</sub>, Li<sub>2</sub>S–SO<sub>3</sub>, LiF, Li<sub>x</sub>F<sub>y</sub> and F–SO<sub>2</sub>, identified through X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Electrochemical impedance spectroscopy (EIS) and distribution of relaxation times (DRT) analyses further confirmed the electrochemical stability of the SEI layer on CF anodes. The LFP/CF cell delivered an initial capacity of 119 mAh/g and relatively high Coulombic efficiency when using the 1 M LiTFSI in PYR13-FSI. CF cycled in different electrolytes exhibit varying mechanical properties with up to 10.08 % loss in tensile strength, which may be related to CF surface degradation during cycling. The 1 M LiTFSI in PYR13-FSI is non-flammable, offering a significant thermal safety. This work successfully demonstrated the significant potential of 1 M LiTFSI in PYR13-FSI RTILs, which enables the use of CF as both an anode active material and cathode current collector for structural battery applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110952"},"PeriodicalIF":8.3,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592776","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

Three-dimensional cohesive finite element simulations coupled with machine learning to predict mechanical properties of polymer-bonded explosives 三维内聚有限元模拟与机器学习相结合，预测聚合物粘合炸药的机械特性

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-11-02 DOI: 10.1016/j.compscitech.2024.110947

Daokun Lu , Bingru Zhang , Liu Liu , Haitao Zhang , Luoxia Cao , Yang Zhou

{"title":"Three-dimensional cohesive finite element simulations coupled with machine learning to predict mechanical properties of polymer-bonded explosives","authors":"Daokun Lu , Bingru Zhang , Liu Liu , Haitao Zhang , Luoxia Cao , Yang Zhou","doi":"10.1016/j.compscitech.2024.110947","DOIUrl":"10.1016/j.compscitech.2024.110947","url":null,"abstract":"<div><div>Developing multifactorial predictive models for the design of polymer-bonded explosives (PBXs) is of importance for their further application in insensitive munition fields. As a popular method, finite element simulations can provide a reliable prediction, but are laborious and expensive if considering the extensive design parameter space. In light of this challenge, we proposed a coupled strategy that includes machine learning (ML) and three-dimensional cohesive finite element simulation for effciently predicting the mechanical properties of PBXs. The strain rate, particle volume fraction, interface strength, fracture energy, and the binders are considered as the main factors of tailoring the tensile strength of PBXs. To improve the prediction performance, an augmented database of 2500 data sets utilizing GANs neural network were established and then processed to train and test six ML models. The results show the accuracy and generalizability of the low-computational-cost ML models in predicting the mechanical properties of PBX composites. The predicted values from these models are in good agreement with the experimental ones. Feature contribution analysis demonstrates that the tensile modulus and failure strain are most affected by the binders, while the tensile strength are most affected by the fracture energy. Using the above conclusions as design guidelines, we can develop the new PBX formulations according to different mechanical property requirements for their optimal use across insensitive ammunitions. This strategy can be a viable machine-learning-assisted solution to designing PBXs.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110947"},"PeriodicalIF":8.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586270","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

Electrohydrodynamic effect within CFRP laminates by bipolar nsPDC electric field during the curing process 固化过程中双极 nsPDC 电场在 CFRP 层压板内产生的电流体动力效应

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-11-02 DOI: 10.1016/j.compscitech.2024.110946

Jing Xiao , Shuran Li , Mengze Li , Yihan Fu , Xiaowen Song , Yinglin Ke

{"title":"Electrohydrodynamic effect within CFRP laminates by bipolar nsPDC electric field during the curing process","authors":"Jing Xiao , Shuran Li , Mengze Li , Yihan Fu , Xiaowen Song , Yinglin Ke","doi":"10.1016/j.compscitech.2024.110946","DOIUrl":"10.1016/j.compscitech.2024.110946","url":null,"abstract":"<div><div>In this paper, a new method based on bipolar nanosecond pulsed superimposed direct current (nsPDC) electric field assisted curing technique was developed to fabricate modified fiber-reinforced composites to enhance their mechanical properties. It was found that the mode I interlaminar fracture toughness of the electric field-modified CFRP laminates reached 1014.2 MPa, which increased by 80.4 %. The average tensile strength and tensile modulus were 2180 MPa and 100780 MPa, respectively, which were 20.7 % and 3.5 % higher than the blank control group. The enhancement mechanism was explored by COMSOL simulation, curing temperature inspection, and microscopic characterization by electron microscopy. The results show that the presence of electric field and electric field force inside the laminate, which affects the flow of resin and the weak migration of fibers, enables the elimination of larger air bubbles present in the material, the reduction of resin-rich zones in the interlayer as well as the improvement of the fiber-resin wettability without significantly altering the curing temperature. The proposed simple, convenient, and environmentally friendly strategy can effectively regulate some of the deficiencies in the conventional manufacturing methods and thus is suitable for the optimal design of fiber-reinforced composites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110946"},"PeriodicalIF":8.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586327","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

Construction of multi-functional silicone rubber/reduced graphene oxide/multi-walled carbon nanotube composites with segregated structure by surfactant-free Pickering emulsion method 利用无表面活性剂皮克林乳液法构建具有离析结构的多功能硅橡胶/还原氧化石墨烯/多壁碳纳米管复合材料

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-11-01 DOI: 10.1016/j.compscitech.2024.110950

Yimiao Wang , Hang Lu , Weiping Lian , Yuhang Sun , Zhaorui Meng , Qingfeng Zhang , Jian Cui , Shuai Zhao , Yehai Yan

{"title":"Construction of multi-functional silicone rubber/reduced graphene oxide/multi-walled carbon nanotube composites with segregated structure by surfactant-free Pickering emulsion method","authors":"Yimiao Wang , Hang Lu , Weiping Lian , Yuhang Sun , Zhaorui Meng , Qingfeng Zhang , Jian Cui , Shuai Zhao , Yehai Yan","doi":"10.1016/j.compscitech.2024.110950","DOIUrl":"10.1016/j.compscitech.2024.110950","url":null,"abstract":"<div><div>Polymer composites with segregated structure (PC–S) have the advantages of low filler usage and excellent functionality. Emulsion blending combined with direct molding technology is the main method for the preparation of PC-S. However, due to the high fluidity of low-viscosity silicone rubber (SR), PC-S cannot be prepared by this technique. In addition, surfactants affect the heat resistance of the final SR composites (SRC). In order to solve the above problems, in this study, a Pickering emulsification combined with pre-crosslinking technology for SR was successfully developed by using graphene oxides (GO)/multi-walled carbon nanotubes (MWCNTs) hybrid fillers (GM) as emulsifiers, and SR/reduced GO (RGO)/MWCNTs composites with segregated structure (SSGM) were prepared. When RGO content is 4.5 wt%, MWCNTs content is 3.2 wt%, SSGM shows the highest electrical conductivity of 12.5 S/m, the highest electromagnetic interference shielding efficiency (EMI SE) of 41.4 dB, and an excellent flame retardant performance. The whole preparation process avoids the use of organic solvents and surfactants, which reduces the production cost of SSGM and the environmental pollution, and provides a feasible preparation route for the industrialized production of SSGM.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110950"},"PeriodicalIF":8.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655015","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

Fabrication and mechanical properties of CFRP honeycomb cylinder based on the transforming from the flat honeycombs 基于扁平蜂窝转化的 CFRP 蜂窝圆筒的制造和力学性能

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-31 DOI: 10.1016/j.compscitech.2024.110948

Zhibin Li , Pengcheng Xue , Jian Xiong

{"title":"Fabrication and mechanical properties of CFRP honeycomb cylinder based on the transforming from the flat honeycombs","authors":"Zhibin Li , Pengcheng Xue , Jian Xiong","doi":"10.1016/j.compscitech.2024.110948","DOIUrl":"10.1016/j.compscitech.2024.110948","url":null,"abstract":"<div><div>Nature has long inspired the design of high-performance structures, offering profound insights into engineering innovations through intricate biological architectures. The rational design of composite curved components is crucial for the lightweight construction of aerospace structures. In the transition from planar constructs to curved components, any mismatch in form can induce high stress, potentially leading to structural compromise or failure. Drawing inspiration from the water lily, a rational design and fabrication approach for cylindrical surface structures is proposed, transitioning from planar to curved surfaces. The adaptation of zero Poisson's ratio honeycomb to cylindrical surface is verified by experiments and simulations. The mismatch relationship between them would lead to the damage failure of the honeycomb. In view of this, the honeycomb sandwich cylinder commonly used in aerospace is fabricated by the proposed method. Theoretical predictions and experimental characterizations were conducted to analyze failure modes under axial compression. This led to the creation of a failure mechanism map for the honeycomb cylinder. Load-mass efficiency analysis revealed that face-crushing failure provides high bearing efficiency. Additionally, the effects of facesheet thickness, along with a comparison of failure modes and imperfection sensitivity between single and sandwich cylinders, were explored. The results indicate that the sandwich cylinder exhibits a higher specific load-bearing capacity and lower imperfection sensitivity compared to the single cylinder.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110948"},"PeriodicalIF":8.3,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572777","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

Experimental study on the influence of optimised automated fibre placement processing parameters on the impact response and residual flexural strength of AS4/APC-2 laminates 关于优化自动纤维铺放加工参数对 AS4/APC-2 层压板冲击响应和残余抗弯强度影响的实验研究

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-30 DOI: 10.1016/j.compscitech.2024.110945

Shafaq Shafaq , Matthew J. Donough , Binayak Bhandari , Andrew W. Phillips , Nigel A. St John , B. Gangadhara Prusty

{"title":"Experimental study on the influence of optimised automated fibre placement processing parameters on the impact response and residual flexural strength of AS4/APC-2 laminates","authors":"Shafaq Shafaq , Matthew J. Donough , Binayak Bhandari , Andrew W. Phillips , Nigel A. St John , B. Gangadhara Prusty","doi":"10.1016/j.compscitech.2024.110945","DOIUrl":"10.1016/j.compscitech.2024.110945","url":null,"abstract":"<div><div>This study explores automated fibre placement (AFP) for manufacturing impact-resistant carbon fibre/PEEK (AS4/APC-2) laminates by modifying the in-situ consolidation parameters. However, manufacturing these laminates without compromising their mechanical properties is challenging owing to the synergistic effect of parameters. The results indicate that a fast deposition rate and high consolidation force are associated with improved impact resistance and a higher threshold energy for damage. Improvements in flexural strength (27.4 %) and modulus (22.6 %), are achieved in non-impacted specimens. Acoustic emission monitoring was conducted during flexural-after-impact test to correlate the internal damage with the mechanical performance of AS4/APC-2 composites. The experimental results indicated that a fast deposition rate combined with high consolidation force can withstand higher impact loads. The FAI test showed the highest residual flexural strength and stiffness under these parameters, as it effectively resisted low-velocity impact (LVI) damage. However, the slight trade-off observed in post-impact strength suggested the presence of resin-rich areas, which may affect the damage tolerance of the laminates.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110945"},"PeriodicalIF":8.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573025","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}

引用次数: 0

Improving the high-voltage insulation properties of polypropylene by introducing trace addition of polyvinylidene fluoride: An experimental and simulation study 通过微量添加聚偏二氟乙烯改善聚丙烯的高压绝缘性能：实验和模拟研究

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-30 DOI: 10.1016/j.compscitech.2024.110939

Ohuk Lee , Do-Kyun Kim , Hana Kim , Seong Hwan Lee , Taehoon Kwon , Ik-Su Kwon , Keisuke Shinozaki , Masayuki Hikita , Jin Hong Lee , Dae Ho Lee , Min Hee Kim , Masahiro Kozako , Seunggun Yu

{"title":"Improving the high-voltage insulation properties of polypropylene by introducing trace addition of polyvinylidene fluoride: An experimental and simulation study","authors":"Ohuk Lee , Do-Kyun Kim , Hana Kim , Seong Hwan Lee , Taehoon Kwon , Ik-Su Kwon , Keisuke Shinozaki , Masayuki Hikita , Jin Hong Lee , Dae Ho Lee , Min Hee Kim , Masahiro Kozako , Seunggun Yu","doi":"10.1016/j.compscitech.2024.110939","DOIUrl":"10.1016/j.compscitech.2024.110939","url":null,"abstract":"<div><div>Various additives ranging from inorganic nanoparticles to organic additives have been suggested to improve the insulation performance of polymeric materials for high-voltage engineering applications. Herein, a simple method for doping fluorine into a polypropylene (PP) matrix was presented by melt-blending of isotactic PP (iPP) with a small amount of polyvinylidene fluoride (PVDF) as a thermoplastic voltage stabilizer (TVS). During melt-mixing, the PVDF TVS, which is immiscible with PP, is gradually split into smaller domains within the iPP matrix and finely distributed, especially at a low PVDF content. The direct current (DC) breakdown strength (BDS) values of the PVDF-doped iPP increased by 110 % and 149 % at 25 and 110 °C, respectively, compared to those of the pristine PP, while its dielectric permittivity and loss tangent values remained nearly similar to those of iPP at wide temperature between 25 and 140 °C and frequency range between 1 Hz and 10 MHz. Quantum chemical simulation results reveal that a small amount of PVDF with high dipole moment introduces deep trap sites within the polymer matrix, which contribute for increasing BDS of iPP. Also, the PP with a small amount of PVDF dopants below 1.0 phr exhibited no any decrease in the tensile strength and elongation at break values. Therefore, the PVDF-doped iPP is anticipated as a potential candidate as high-performance high-voltage insulation materials for next-generation insulation applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110939"},"PeriodicalIF":8.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572775","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}

引用次数: 0

Fully automated measurement of the spatial distribution of both fibre length and orientation from micro-CT images of short fibre reinforced polymers 从短纤维增强聚合物的显微 CT 图像中全自动测量纤维长度和取向的空间分布

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-29 DOI: 10.1016/j.compscitech.2024.110943

L.M. Martulli, M. Sordi, A. Dinosio, A. Bernasconi

引用次数: 0

Electromagnetic wave absorption and enhanced mechanical properties of magnetic self-healing metal shell microcapsules filled polymer 填充聚合物的磁性自修复金属壳微胶囊的电磁波吸收和增强机械性能

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-29 DOI: 10.1016/j.compscitech.2024.110944

Qian Ren , Xiaoyu Zhang , Yiran Wu , Dawei Sun , Xin Zhang

{"title":"Electromagnetic wave absorption and enhanced mechanical properties of magnetic self-healing metal shell microcapsules filled polymer","authors":"Qian Ren , Xiaoyu Zhang , Yiran Wu , Dawei Sun , Xin Zhang","doi":"10.1016/j.compscitech.2024.110944","DOIUrl":"10.1016/j.compscitech.2024.110944","url":null,"abstract":"<div><div>In this work, PUF/PU@IPDI (PPI) polymer shell microcapsules were synthesized through interfacial polymerization and in situ polymerization. Subsequently, a layer of metal Ni was plated on the surface of microcapsules to fabricate Ni/PUF/PU@IPDI (NPPI) composites. The results revealed that NPPI microcapsules exhibited superior thermal stability and mechanical properties, and NPPI-60 obtained the greatest strength (102.8 MPa). The minimum reflection loss (RL) value of the NPPI-20 composite was up to −32.8 dB at 5.5 mm and the corresponding effective absorption bandwidth (EAB) was 2.4 GHz. Additionally, the NPPI-10 composite displayed the highest healing efficiency (78.6 % and 86.6 % for the scratch depth and width, respectively), and the mechanical strength and fracture toughness of epoxy resin were enhanced by the addition of metal microcapsules. The core-shell structure established by electroless plating can endow self-healing microcapsules with outstanding mechanical characteristics as well as good wave absorption capability, indicating that NPPI composites have promising applications in the field of electromagnetic wave absorption and function and structure integration design of composites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110944"},"PeriodicalIF":8.3,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572774","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