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In Situ Directional Polymerization of Poly(1,3-dioxolane)Solid Electrolyte Induced by Cellulose Paper-Based Composite Separator for Lithium Metal Batteries 被引量:2
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作者 Jian Ma Yueyue Wu +5 位作者 Hao Jiang Xin Yao Fan Zhang Xianglong Hou Xuyong Feng Hongfa Xiang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2023年第3期134-143,共10页
In traditional in situ polymerization preparation for solid-state electrolytes,initiators are directly added to the liquid precursor.In this article,a novel cellulose paper-based composite separator is fabricated,whic... In traditional in situ polymerization preparation for solid-state electrolytes,initiators are directly added to the liquid precursor.In this article,a novel cellulose paper-based composite separator is fabricated,which employs alumina as the inorganic reinforcing material and is loaded with polymerization initiator aluminum trifluoromethanesulfonate.Based upon this,a separator-induced in situ directional polymerization technique is demonstrated,and the extra addition of initiators into liquid precursors is no longer required.The polymerization starts from the surface and interior of the separator and extends outward with the gradually dissolving of initiators into the precursor.Compared with its traditional counterpart,the separator-induced poly(1,3-dioxolane)electrolyte shows improved interfacial contact as well as appropriately mitigated polymerization rate,which are conducive to practical applications.Electrochemical measurement results show that the prepared poly(1,3-dioxolane)solid electrolyte possesses an oxidation potential up to 4.4 V and a high Li+transference number of 0.72.After 1000 cycles at 2 C rate(340 mA g^(−1)),the assembled Li||LiFePO_(4)solid battery possesses a 106.8 mAh g^(−1)discharge capacity retention and 83.5%capacity retention ratio,with high average Coulombic efficiency of 99.5%achieved.Our work may provide new ideas for the design and application of in situ polymerization technique for solid electrolytes and solid batteries. 展开更多
关键词 cellulose paper-based composite separator in situ directional polymerization lithium metal battery poly-DOL electrolyte solid-state electrolyte
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Microstructure and properties of Al/Si/SiC composites for electronic packaging 被引量:13
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作者 朱晓敏 于家康 王新宇 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第7期1686-1692,共7页
The Al/Si/SiC composites with medium volume fraction for electronic packaging were fabricated by gas pressure infiltration.On the premise of keeping the machinability of the composites,the silicon carbide particles,wh... The Al/Si/SiC composites with medium volume fraction for electronic packaging were fabricated by gas pressure infiltration.On the premise of keeping the machinability of the composites,the silicon carbide particles,which have the similar size with silicon particles(average 13 μm),were added to replace silicon particles of same volume fraction,and microstructure and properties of the composites were investigated.The results show that reinforcing particles are distributed uniformly and no apparent pores are observed in the composites.It is also observed that higher thermal conductivity(TC) and flexural strength will be obtained with the addition of SiC particles.Meanwhile,coefficient of thermal expansion(CTE) changes smaller than TC.Models for predicting thermal properties were also discussed.Equivalent effective conductivity(EEC) was proposed to make H-J model suitable for hybrid particles and multimodal particle size distribution. 展开更多
关键词 Al/Si/SiC composite electronic packaging thermal properties flexural strength
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Effects of diamond particle size on microstructure and properties of diamond/Al-12Si composites prepared by vacuum-assisted pressure infiltration
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作者 Jia-ping Fu Can-xu Zhou +1 位作者 Guo-fa Mi Yuan Liu 《China Foundry》 SCIE EI CAS CSCD 2024年第4期360-368,共9页
Diamond/aluminium composites have attracted attention in the field of thermal management of electronic packaging for their excellent properties.In order to solve the interfacial problem between diamond and aluminium,a... Diamond/aluminium composites have attracted attention in the field of thermal management of electronic packaging for their excellent properties.In order to solve the interfacial problem between diamond and aluminium,a novel process combining pressure infiltration with vacuum-assisted technology was proposed to prepare diamond/aluminum composites.The effect of diamond particle size on the microstructure and properties of the diamond/Al-12Si composites was investigated.The results show that the diamond/Al-12Si composites exhibit high relative density and a uniform microstructure.Both thermal conductivity and coefficient of thermal expansion increase with increasing particle size,while the bending strength exhibits the opposite trend.When the average diamond particle size increases from 45μm to 425μm,the thermal conductivity of the composites increases from 455 W·m^(-1)·K^(-1)to 713 W·m^(-1)·K^(-1)and the coefficient of thermal expansion increases from 4.97×10^(-6)K^(-1)to 6.72×10^(-6)K^(-1),while the bending strength decreases from 353 MPa to 246 MPa.This research demonstrates that high-quality composites can be prepared by the vacuum-assisted pressure infiltration process and the thermal conductivity of the composites can be effectively improved by increasing the diamond particle size. 展开更多
关键词 diamond/aluminum composites thermal conductivity electronic packaging vacuum-assisted pressure infiltration
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Research on Silicon Carbide Dispersion-Reinforced Hypereutectic Aluminum-Silicon Electronic Packaging Materials
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作者 Ruixi Guo Yunhao Hua Tianze Jia 《Journal of Electronic Research and Application》 2024年第2期86-94,共9页
The objective of this study is to improve the mechanical properties and machining performance of high thermal conductivity and low expansion silicon carbide dispersion-strengthened hypereutectic aluminum-silicon elect... The objective of this study is to improve the mechanical properties and machining performance of high thermal conductivity and low expansion silicon carbide dispersion-strengthened hypereutectic aluminum-silicon electronic packaging materials to meet the needs of aviation,aerospace,and electronic packaging fields.We used the powder metallurgy method and high-temperature hot pressing technology to prepare SiC/Al-Si composite materials with different SiC contents(5vol%,10vol%,15vol%,and 20vol%).The results showed that as the SiC content increased,the tensile strength of the composite material first increased and then decreased.The tensile strength was the highest when the SiC content was 15%;the sintering temperature significantly affected the composite material’s structural density and mechanical properties.Findings indicated 700℃was the optimal sintering and the optimal SiC content of SiC/Al-Si composite materials was between 10%and 15%.Besides,the sintering temperature should be strictly controlled to improve the material’s structural density and mechanical properties. 展开更多
关键词 Silicon carbide Electronic packaging materials Powder metallurgy Mechanical properties composite materials
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Effects of rolling and annealing on microstructures and properties of Cu/Invar electronic packaging composites prepared by powder metallurgy 被引量:5
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作者 吴丹 杨磊 +2 位作者 史常东 吴玉程 汤文明 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第6期1995-2002,共8页
The Cu/Invar composites of 40% Cu were prepared by powder metallurgy, and the composites were rolled with 70% reduction and subsequently annealed at 750 ℃. Phases, microstructures and properties of the composites wer... The Cu/Invar composites of 40% Cu were prepared by powder metallurgy, and the composites were rolled with 70% reduction and subsequently annealed at 750 ℃. Phases, microstructures and properties of the composites were then studied. After that, the amount of a-Fe(Ni,Co) in the composites is reduced, because a-Fe(Ni,Co) partly transfers into y-Fe(Ni,Co) through the diffusion of the Ni atoms into a-Fe(Ni,Co) from Cu. When the rolling reduction is less than 40%, the deformation of Cu takes place, resulting in the movement of the Invar particles and the seaming of the pores. When the rolling reduction is in the range from 40% to 60%, the deformations of Invar and Cu occur simultaneously to form a streamline structure. After rolling till 70% and subsequent annealing, the Cu/Invar composites have fine comprehensive properties with a relative density of 98.6%, a tensile strength of 360 MPa, an elongation rate of 50%, a thermal conductivity of 25.42 W/(m.K) (as-tested) and a CTE of 10.79× 10-6/K (20-100 ℃). 展开更多
关键词 electronic packaging material Cu/Invar composite ROLLING ANNEALING
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Laser-weldable Si_p-SiC_p/Al hybrid composites with bilayer structure for electronic packaging 被引量:6
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作者 朱梦剑 李顺 +1 位作者 赵恂 熊德赣 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第4期1032-1038,共7页
Laser-weldable Sip-SiCp/Al hybrid composites with high volume fraction (60%-65%) of SiC reinforcement were fabricated by compression moulding and vacuum gas pressure infiltration technology. Microscopic observation ... Laser-weldable Sip-SiCp/Al hybrid composites with high volume fraction (60%-65%) of SiC reinforcement were fabricated by compression moulding and vacuum gas pressure infiltration technology. Microscopic observation displayed that the Sip-SiCp/Al hybrid composites with bilayer structure were compact without gas pores and the intergradation between Sip/Al layer and SiCp/Al layer was homogeneous and continuous. Further investigation revealed that the Sip-SiCp/Al hybrid composites possessed low density (2.96 g/cm^3), high gas tightness (1.0 mPa·cm^3)/s), excellent thermal management function as a result of high thermal conductivity (194 W/(m·K) and low coefficient of thermal expansion (7.0×10^-6 K-1). Additionally, Sip-SiCp/Al hybrid composites had outstanding laser welding adaptability, which is significantly important for electronic packaging applications. The gas tightness of components after laser welding (48 mPa·cm^3)/s) can well match the requirement of advanced electronic packaging. Several kinds of these precision components passed tests and were put into production. 展开更多
关键词 Sip-SiCp/Al hybrid composites laser welding thermo-physical properties electronic packaging
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Interfacial microstructure and properties of diamond/Cu-xCr composites for electronic packaging applications 被引量:12
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作者 ZHANG Ximin GUO Hong YIN Fazhang FAN Yeming ZHANG Yongzhong 《Rare Metals》 SCIE EI CAS CSCD 2011年第1期94-98,共5页
Diamond/Cu-xCr composites were fabricated by pressure infiltration process.The thermal conductivities of diamond/Cu-xCr(x = 0.1,0.5,0.8) composites were above 650 W/mK,higher than that of diamond/Cu composites.The t... Diamond/Cu-xCr composites were fabricated by pressure infiltration process.The thermal conductivities of diamond/Cu-xCr(x = 0.1,0.5,0.8) composites were above 650 W/mK,higher than that of diamond/Cu composites.The tensile strengths ranged from 186 to 225 MPa,and the bonding strengths ranged from 400 to 525 MPa.Influences of Cr element on the thermo-physical properties and interface structures were analyzed.The intermediate layer was confirmed as Cr3C2 and the amount of Cr3C2 increased with the increase of Cr concentration in Cu-xCr alloys.When the Cr concentration was up to 0.5 wt.%,the content of the Cr3C2 layer was constant.As the thickness of the Cr3C2 layer became larger,the composites showed a lower thermal conductivity but higher mechanical properties.The coefficients of thermal expansion(CTE) of diamond/Cu-xCr(x = 0.1,0.5,0.8) composites were in good agreement with the predictions of the Kerner' model. 展开更多
关键词 composite materials copper interfaces bonding electronic packaging INFILTRATION
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Semisolid forging electronic packaging shell with silicon carbon-reinforced copper composites 被引量:2
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作者 Kai-Kun Wang 《Rare Metals》 SCIE EI CAS CSCD 2013年第2期191-195,共5页
To fabricate electronic packaging shell of coppermatrix composite with characteristics of high ther mal conductivity and low thermal expansion coefficient, semisolid forming technology, and powder metallurgy was combi... To fabricate electronic packaging shell of coppermatrix composite with characteristics of high ther mal conductivity and low thermal expansion coefficient, semisolid forming technology, and powder metallurgy was combined. Conventional mechanical mixing of Cu and SiC could have insufficient wettability, and a new method of semisolid processing was introduced for billets preparation. The SiC/Cu composites were first prepared by PM, and then, semisolid reheating was performed for the successive semisolid forging. Composite billets with SiC 35 % vol ume fraction were compacted and sintered pressurelessly, microstructure analysis showed that the composites pre pared by PM had high density, and the combination between SiC particles and Cualloy was good. Semisolid reheating was the crucial factor in determining the micro structure and thixotropic property of the billet. An opti mised reheating strategy was proposed: temperature 1,025 ℃and holding time 5 min. 展开更多
关键词 Semi-solid forming Silicon carbon reinforcedcopper composites Electronic packaging shell MICROSTRUCTURE
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Facile Fabrication of Cellulosic Paper-based Composites with Temperature-controlled Hydrophobicity and Excellent Mechanical Strength 被引量:6
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作者 Tongtong Yun Yilin Wang +3 位作者 Jie Lu Yi Cheng Yanna Lyu Haisong Wang 《Paper And Biomaterials》 2020年第2期20-27,共8页
In this paper,we presented a novel strategy to employ a plantderived carbohydrate polymer,i.e.,cellulose,to prepare a hydrophobic composite.Cellulose was used as a scaffold,and ethylene-propylene side by side(ES)fiber... In this paper,we presented a novel strategy to employ a plantderived carbohydrate polymer,i.e.,cellulose,to prepare a hydrophobic composite.Cellulose was used as a scaffold,and ethylene-propylene side by side(ES)fiber was thermally melted and then coated on the cellulose surface to achieve hydrophobicity.Experimental results revealed that the thermocoating ES fibers greatly increased the water contact angle of the cellulose scaffold from 25°to 153°while simultaneously enhanced the wet tensile strength of the composite approximately 6.7-fold(drying temperature of 170℃)compared with the pure cellulose paper.In particular,compared with other related research,the prepared cellulose-based composite possessed excellent hydrophobicity and superior mechanical strength,which introduces a new chemical engineering approach to prepare hydrophobic cellulose-based functional materials. 展开更多
关键词 CELLULOSE ES fiber paper-based compositeS HYDROPHOBICITY mechanical strength
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Outstanding Impact Resistance of Post-Consumer HDPE/Multilayer Packaging Composites 被引量:1
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作者 Silvia Luciana Favaro Antonio Guilherme Basso Pereira +4 位作者 Janaina Rodrigues Fernandes Orlando Baron Cleiser Thiago Pereira da Silva Murilo Pereira Moisés Eduardo Radovanovic 《Materials Sciences and Applications》 2017年第1期15-25,共11页
New recycling alternative for multilayer films was successfully presented. Food packaging formed from different materials is difficult to recycle. The use of aluminum, glass, paper, paints, varnishes, and other materi... New recycling alternative for multilayer films was successfully presented. Food packaging formed from different materials is difficult to recycle. The use of aluminum, glass, paper, paints, varnishes, and other materials in the rolling processes from plastic packaging is intended to optimize the efficiency of packaging. Nevertheless, these materials prevent the recycling of packaging because they become contaminants to the recycling process. Food multilayered packaging containing poly (ethylene terephthalate) PET, poly (ethylene) PE and aluminum was used as filler in the preparation of composites with post-consumer high density polyethylene matrix. Composites containing up to 50 wt% of filler were feasible to prepare, allowing the obtention of a material with varied mechanical and thermal properties. This feature allows the preparation of composites suitable for specific application. The addition of multilayer matter in the polyethylene matrix provided a material with excellent mechanical properties such as higher tensile impact strength (148 J/m) and elasticity (350 MPa) as compared to pure polyethylene (40 J/m and 450 MPa). 展开更多
关键词 MULTILAYER packaging Polymer-Matrix compositeS Recycling Mechanical Properties
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The Packaging Materials with Carbon Nanotube/Polymer Composites
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作者 Shen-Li-Fu Wern-Shirang Jou Huy-Zu Cheng 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第A03期1-2,共2页
A polymer-based carbon nano-tubes (CNTs) composite with high electromagnetic (EM) wave shielding effectiveness (SE) and with high mechanical property is developed for packaging of electronic modulus or devices.The ... A polymer-based carbon nano-tubes (CNTs) composite with high electromagnetic (EM) wave shielding effectiveness (SE) and with high mechanical property is developed for packaging of electronic modulus or devices.The liquid crystal polymers (LCP) and melamine formaldehydes (MF) polymer are used to study the orientation effect of CNTs in various polymeric matrix.The influences of orientation,aspect ratio,and mass fraction of CNTs upon the shielding effectiveness (SE) of CNTs-composites are investigated.The higher the orientation,aspect ratio,and weight percentages of nano-materials are, the higher the SE of the carbon composites.The highest SE for the CNTs/LCP nano composite obtained is more than 62 dB. This results may lead to the developing for CPU IC chip packaging. 展开更多
关键词 packaging materials carbon nano-tube polymer composites
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Numerical simulation on thixoforging of electronic packaging shell with SiC_p/A356 composites
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作者 王开坤 汪富玉 +2 位作者 陈学军 王璐 马春梅 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第9期1707-1711,共5页
Based on the research of modem electronic packaging materials, thixo-forming technology was used to fabricate electronic packaging shell. The process of thixo-extrusion with SiCp/A356 composites was simulated by the f... Based on the research of modem electronic packaging materials, thixo-forming technology was used to fabricate electronic packaging shell. The process of thixo-extrusion with SiCp/A356 composites was simulated by the finite element software DEFORM-3D, then the flow velocity field, equivalent strain field and temperature field were analyzed. The electronic packaging shell was manufactured by extrusion according to the results from numerical simulation. The results show that thixo-forming technology can be used in producing electronic package shell with SiCp/A356 composites, and high volume fraction of SiCp with homogeneous distribution can be achieved, being in agreement with the requirements of electronic packaging materials. 展开更多
关键词 thixo-forming SiCp/A356 composites electronic packaging shell numerical simulation
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Microstructure and properties of electronic packaging shell with high silicon carbide aluminum-base composites by semi-solid thixoforming
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作者 郭明海 刘俊友 +2 位作者 贾成厂 贾琪瑾 果世驹 《Journal of Central South University》 SCIE EI CAS 2014年第11期4053-4058,共6页
The electronic packaging shell with high silicon carbide aluminum-base composites was prepared by semi-solid thixoforming technique. The flow characteristic of the Si C particulate was analyzed. The microstructures of... The electronic packaging shell with high silicon carbide aluminum-base composites was prepared by semi-solid thixoforming technique. The flow characteristic of the Si C particulate was analyzed. The microstructures of different parts of the shell were observed by scanning electron microscopy and optical microscopy, and the thermophysical and mechanical properties of the shell were tested. The results show that there exists the segregation phenomenon between the Si C particulate and the liquid phase during thixoforming, the liquid phase flows from the shell, and the Si C particles accumulate at the bottom of the shell. The volume fraction of Si C decreases gradually from the bottom to the walls. Accordingly, the thermal conductivities of bottom center and walls are 178 and 164 W·m-1·K-1, the coefficients of thermal expansion(CTE) are 8.2×10-6 and 12.6×10-6 K-1, respectively. The flexural strength decreases slightly from 437 to 347 MPa. The microstructures and properties of the shell show gradient distribution. 展开更多
关键词 high silicon carbide aluminum-base composites electronic packaging semi-solid thixoforming thermal conductivity coefficient of thermal expansion
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Microstructure and electric properties of Si_p/Al composites for electronic packaging applications
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作者 修子扬 武高辉 +2 位作者 张强 宋美慧 田首夫 《中国有色金属学会会刊:英文版》 CSCD 2007年第A02期1034-1038,共5页
Sip/1199,Sip/4032 and Sip/4019 environment-friendly composites for electronic packaging applications with high volume fraction of Si particles were fabricated by squeeze-casting technology. Effects of microstructure,p... Sip/1199,Sip/4032 and Sip/4019 environment-friendly composites for electronic packaging applications with high volume fraction of Si particles were fabricated by squeeze-casting technology. Effects of microstructure,particle volume fraction,particle size,matrix alloy and heat treatment on the electrical properties of composites were discussed,and the electrical conductivity was calculated by theoretical models. It is shown that the Si/Al interfaces are clean and do not have interface reaction products. For the same matrix alloy,the electrical conductivity of composites decreases with increasing the reinforcement volume fraction. As for the same particle content,the electrical conductivity of composites decreases with increasing the alloying element content of matrix. Particle size has little effects on the electrical conductivity. Electrical conductivity of composites increases slightly after annealing treatment. The electrical conductivity of composites calculated by P.G model is consistent with the experimental results. 展开更多
关键词 电子封装 硅铝复合物 微观结构 导电性
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Fabrication and properties of Si/Al interpenetrating phase composites for electronic packaging
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作者 王小锋 武高辉 +2 位作者 王日初 修子扬 余琨 《中国有色金属学会会刊:英文版》 CSCD 2007年第A02期1039-1042,共4页
In order to improve the thermal properties of MMCs for electronic packaging,the concept of fabrication MMCs with particular interpenetrating phases(IPCs) was proposed. Based on the diffusion theory of reinforcement el... In order to improve the thermal properties of MMCs for electronic packaging,the concept of fabrication MMCs with particular interpenetrating phases(IPCs) was proposed. Based on the diffusion theory of reinforcement element in matrix alloys of some particular PMMCs,a novel fabrication method to produce IPCs was proposed. The Si/Al composites(65%Si,volume fraction) with interpenetrating phases were fabricated successfully by squeeze casting and hot press sintering technology. Microstructure observations indicate that the reinforcements Si are of three-dimensional continuous network and the composites are compact without obvious defects. The average linear thermal expansion coefficient(CTE) between 20 ℃ and 100 ℃ of the Si/Al IPCs is 8.27×10-6/K,and the thermal conductivity(TC) is 124.03 W/(m·K),and the composites can meet the demands of electronic packaging. ROM model and Turner model can be used to predict the CTEs of IPCs,and the experimental CTEs are between their theoretical and calculated values. 展开更多
关键词 电子封装 硅铝合金 制造方法 相组成
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A novel method for extracting and optimizing the complex permittivity of paper-based composites based on an artificial neural network model
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作者 XIA ChenBin SHEN JunYi +6 位作者 LIAO ShaoWei WANG Yi HUANG ZhengSheng XUE Quan TANG Min LONG Jin HU Jian 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2024年第10期3190-3204,共15页
Measuring the complex permittivity of ultrathin,flexible materials with a high loss tangent poses a substantial challenge with precision using conventional methods,and verifying the accuracy of test results remains di... Measuring the complex permittivity of ultrathin,flexible materials with a high loss tangent poses a substantial challenge with precision using conventional methods,and verifying the accuracy of test results remains difficult.In this study,we introduce a methodology based on a back-propagation artificial neural network(ANN)to extract the complex permittivity of paper-based composites(PBCs).PBCs are ultrathin and flexible materials exhibiting considerable complex permittivity and dielectric loss tangent.Given the absence of mature measurement methods for PBCs and a lack of sufficient data for ANN training,a mapping relationship is initially established between the complex permittivity of honeycomb-structured microwave-absorbing materials(HMAMs,composed of PBCs)and that of PBCs using simulated data.Leveraging the ANN model,the complex permittivity of PBCs can be extracted from that of HMAMs obtained using standard measurement.Subsequently,two published methods are cited to illustrate the accuracy and advancement of the results obtained using the proposed approach.Additionally,specific error analysis is conducted,attributing discrepancies to the conductivity of PBCs,the homogenization of HMAMs,and differences between the simulation model and actual objects.Finally,the proposed method is applied to optimize the cell length parameters of HMAMs for enhanced absorption performance.The conclusion discusses further improvements and areas for extended research. 展开更多
关键词 paper-based composite HONEYCOMB complex permittivity artificial neural networks inverse modeling
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Thermal expansion and mechanical properties of high reinforcement content SiC_(p)/Cu composites fabricated by squeeze casting technology 被引量:5
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作者 陈国钦 修子扬 +2 位作者 孟松鹤 武高辉 朱德志 《中国有色金属学会会刊:英文版》 CSCD 2009年第S3期600-604,共5页
High reinforcement content SiCp/Cu composites (φp=50%, 55% and 60%) for electronic packaging applications were fabricated by patent cost-effective squeeze-casting technology. The composites appear to be free of pores... High reinforcement content SiCp/Cu composites (φp=50%, 55% and 60%) for electronic packaging applications were fabricated by patent cost-effective squeeze-casting technology. The composites appear to be free of pores, and the SiC particles are distribute uniformly in the composites. The mean linear coefficients of thermal expansion (CTEs, 20-100 ℃ ) of as-cast SiCp/Cu composites range from 8.8×10-6 ℃-1 to 9.9×10-6 ℃-1 and decrease with the increase of SiC content. The experimental CTEs of as-cast SiCp/Cu composites agree well with the predicted values based on Kerner model. The CTEs of composites reduce after annealing treatment due to the fact that the internal stress of the composite is released. The Brinell hardness increases from 272.3 to 313.2, and the modulus increases from 186 GPa to 210 GPa for the corresponding composites. The bending strength is larger than 374 MPa, but no obvious trend between bending strength and SiCp content is observed. 展开更多
关键词 SICP/CU compositeS electronic packaging thermal EXPANSION COEFFICIENT MECHANICAL properties
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Preparation of SiC_p/A356 electronic packaging materials and its thixo-forging 被引量:2
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作者 王开坤 康永林 +2 位作者 宋普光 徐峰 黎先辉 《中国有色金属学会会刊:英文版》 CSCD 2010年第S3期988-992,共5页
The rapid development of electronic packaging industry has resulted in higher requirement for packaging materials.The packaging material of SiC reinforced A356 aluminum alloy was fabricated by mechanical mixing method... The rapid development of electronic packaging industry has resulted in higher requirement for packaging materials.The packaging material of SiC reinforced A356 aluminum alloy was fabricated by mechanical mixing method,and the SiCp/Al composite billet was formed by thixo-forging to manufacture the electronic packaging shell.The microstructure of the produced part was investigated.Two different thixo-forging procedures for manufacturing electronic packaging shell were analyzed.The results show that after being heated to 600 ℃ and held for 3 h,SiCp has good compatibility with A356 aluminum alloy and the SiCp/A356 composite billet can meet the requirements of thixo-forging.When the billet was remelted to 580℃,held for 10 min,the homogeneous microstructure with the best thixo-formability can be realized.The thixo-forging of electronic packaging shell is feasible. 展开更多
关键词 SICP/AL composite ELECTRONIC packaging SHELL THIXO-FORGING microstructure
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Microstructure and properties of high-fraction graphite nanoflakes/6061Al matrix composites fabricated via spark plasma sintering 被引量:3
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作者 Hao CHANG Jian SUN +4 位作者 Guo-hong CHEN Bing WANG Lei YANG Jian-hua ZHANG Wen-ming TANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第6期1550-1560,共11页
30-50 wt.%graphite nanoflakes(GNFs)/6061Al matrix composites were fabricated via spark plasma sintering(SPS)at 610℃.The effects of the sintering pressure and GNF content on the microstructure and properties of the co... 30-50 wt.%graphite nanoflakes(GNFs)/6061Al matrix composites were fabricated via spark plasma sintering(SPS)at 610℃.The effects of the sintering pressure and GNF content on the microstructure and properties of the composites were investigated.The results indicated that interfacial reactions were inhibited during SPS because no Al4C3 was detected.Moreover,the agglomeration of the GNFs increased,and the distribution orientation of the GNFs decreased with increasing the GNF content.The relative density,bending strength,and coefficient of thermal expansion(CTE)of the composites decreased,while the thermal conductivity(TC)in the X−Y direction increased.As the sintering pressure increased,the GNFs deagglomerated and were distributed preferentially in the X−Y direction,which increased the relative density,bending strength and TC,and decreased the CTE of the composites.The 50wt.%GNFs/6061Al matrix composite sintered at 610℃ under 55 MPa demonstrated the best performance,i.e.,bending strength of 72 MPa,TC and CTE(RT−100℃)of 254 W/(m·K)and 8.5×10^(−6)K^(−1)in the X−Y direction,and 55 W/(m·K)and 9.7×10^(−6)K^(−1)in the Z direction,respectively. 展开更多
关键词 electronic packaging composite spark plasma sintering(SPS) 6061Al alloy graphite nanoflake(GNF) microstructure thermal property mechanical property
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Conceptual Design and Selection of Natural Fibre Reinforced Biopolymer Composite (NFBC) Takeout Food Container 被引量:1
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作者 H.N.Salwa S.M.Sapuan +1 位作者 M.T.Mastura M.Y.M.Zuhri 《Journal of Renewable Materials》 SCIE EI 2021年第4期803-827,共25页
Biopolymer composite has gained huge attention for its beneficial properties such as biodegradable and less impact to the environment.This consequently would diminish the dependency on the petroleum-based polymer.Abun... Biopolymer composite has gained huge attention for its beneficial properties such as biodegradable and less impact to the environment.This consequently would diminish the dependency on the petroleum-based polymer.Abundance of studies have been done on the development and characterization of biopolymer composite materials for food packaging application,but work on the conceptual design of biopolymer composite packaging product is hardly found.Using the Kano Model,Quality Function Deployment for Environment(QFDE),morphological map,and Analytic Hierarchy Method(AHP)framework combination,this paper presents the conceptual design of a natural fibre reinforced biopolymer composites take-out food container.To understand customer satisfaction with the current use of takeout food containers,the Kano model was applied,and the findings were integrated into QFDE.The highest weight of voices of customer and environment(VOCE)as the solution parameters for the design characteristics were later refined using the aid of morphological chart(MC)to systematically develop conceptual designs.Lastly,AHP was utilized to pick the final concept design.The concept design with the highest score(8.3%)was chosen as the final conceptual design. 展开更多
关键词 Conceptual design takeout food container biodegradable packaging biopolymer composite Kano model QFDE AHP
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