Nanocomposites最新文献_第10页

KCC-1/Pr-SO3H: an efficient heterogeneous catalyst for green and one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one KCC-1/Pr-SO3H:绿色一锅合成2,3-二氢喹唑啉-4(1H)- 1的高效多相催化剂

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-01-02 DOI: 10.1080/20550324.2019.1708634

Sajjad Azizi, Jafar Soleymani, M. Hasanzadeh

引用次数: 15

Magnesium nanocomposites reinforced with rare earth element nanoparticles: nanoindentation-driven response 稀土纳米粒子增强镁纳米复合材料:纳米压痕驱动响应

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-01-02 DOI: 10.1080/20550324.2019.1705592

M. Haghshenas, M. Gupta

{"title":"Magnesium nanocomposites reinforced with rare earth element nanoparticles: nanoindentation-driven response","authors":"M. Haghshenas, M. Gupta","doi":"10.1080/20550324.2019.1705592","DOIUrl":"https://doi.org/10.1080/20550324.2019.1705592","url":null,"abstract":"Abstract Magnesium (Mg), as the lightest metallic material, is 33% lighter than aluminum which makes it, potentially, a great replacement for aluminum and its alloys. However, Mg in pure and alloyed conditions is brittle at ambient temperature which largely limits their applications. One key solution to enhance the strength and ductility of Mg and its alloys is to embed thermally-stable nano-size reinforcements within the Mg matrix to produce so-called “Mg nanocomposites”. The Mg nanocomposites are considering revolutionizing energy-saving lightweight materials of the future with enhanced strength and ductility properties. Mg nanocomposites are, however, at the initial degrees of improvement and consequently, systematic research is required to set up microstructure/property relationships at distinct potential conditions (i.e. temperatures and strain rates). In the present study, a nanoindentation testing approach is adopted to assess ambient-temperature small scale mechanical properties of a group of Mg nanocomposites reinforced with rare-earth element nanoparticles (NPs), i.e. Sm2O3. This paper tried to assess various nanoindentation-driven properties of the Mg-Sm2O3 nanocomposites and compare them with the pure Mg as the baseline. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"6 1","pages":"22 - 30"},"PeriodicalIF":4.6,"publicationDate":"2020-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85315774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 6

Damage monitoring of adhesively bonded composite-metal hybrid joints using carbon nanotube-based sensing layer 基于碳纳米管传感层的复合金属粘接接头损伤监测

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-01-02 DOI: 10.1080/20550324.2019.1699229

S. Doshi, Tyler B. Lyness, E. Thostenson

{"title":"Damage monitoring of adhesively bonded composite-metal hybrid joints using carbon nanotube-based sensing layer","authors":"S. Doshi, Tyler B. Lyness, E. Thostenson","doi":"10.1080/20550324.2019.1699229","DOIUrl":"https://doi.org/10.1080/20550324.2019.1699229","url":null,"abstract":"Abstract Improving mechanical properties and decreasing costs have significantly increased the use of fiber composites in automotive, aerospace, and civil engineering applications. Structural composites are bonded to traditional metallic materials in a variety of applications, and mechanical fasteners often cannot be used due to the low bearing strength of composites. With the increasing use of adhesives in load-bearing structures, novel techniques are required for monitoring the structural integrity of adhesive joints. Previously, carbon nanotubes (CNTs) have been added to adhesives and resins to create in-situ sensors, but the increased viscosity and potential for galvanic corrosion remains a challenge. In this research, a piezoresistive carbon nanotube-based sensing layer is embedded in a composite/steel adhesive joint for damage sensing. The use of a thin sensing layer with low-fiber volume fraction enables the use of existing adhesives without causing any major changes in the physical properties of the adhesives or the curing cycle and reduces the chances of galvanic corrosion. Different approaches of using an adhesive layer and a nonconductive fabric are investigated for insulation of the sensing layer. The nonconductive fabric approach for insulating the specimen yields better mechanical properties as the there are no weak interfaces in the adhesive bondline. Additionally, it is more convenient for scaling up for field applications as the adhesive is cured in one stage. The sensing layer can not only be used to detect incipient damage in the joint, but also identify different modes of failure. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"123 1","pages":"12 - 21"},"PeriodicalIF":4.6,"publicationDate":"2020-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74110501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 9

High-modulus rotary jet spun co-polyimide nanofibers and their composites 高模量旋转喷射纺丝共聚酰亚胺纳米纤维及其复合材料

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-01-02 DOI: 10.1080/20550324.2019.1687174

J. Rogalski, Han Zhang, Jian Yao, C. Bastiaansen, T. Peijs

引用次数: 8

KCC-1-NH2-DPA: an efficient heterogeneous recyclable nanocomposite for the catalytic synthesis of tetrahydrodipyrazolopyridines as a well-known organic scaffold in various bioactive derivatives KCC-1-NH2-DPA:一种高效的非均相可回收纳米复合材料，用于催化合成四氢二吡唑吡啶，是各种生物活性衍生物中众所周知的有机支架

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2019-10-02 DOI: 10.1080/20550324.2019.1681623

Sajjad Azizi, N. Shadjou, M. Hasanzadeh

引用次数: 17

Nanoclay assisted ultra-drawing of polypropylene tapes 纳米粘土辅助聚丙烯带的超拉伸