Uranium uptake from wastewater by the novel MnxTi1-xOy composite materials: performance and mechanism

2021 ◽  
pp. 117392
Author(s):  
Yong Zhang ◽  
Jun Liao ◽  
Wenkun Zhu
Keyword(s):  
Composite Materials ◽  
The Novel ◽  
Uranium Uptake ◽  
Performance And Mechanism

Fabrication, performance and mechanism of MgO meso-/macroporous nanostructures for simultaneous removal of As(iii) and F in a groundwater system

2016 ◽  
Vol 3 (6) ◽  
pp. 1416-1424 ◽  
Author(s):  
Panpan Gao ◽  
Xike Tian ◽  
Chao Yang ◽  
Zhaoxin Zhou ◽  
Yong Li ◽  
...  
Keyword(s):  
Simultaneous Removal ◽  
The Novel ◽  
Removal Rates ◽  
Groundwater System ◽  
Adsorption Mechanisms ◽  
System P ◽  
Performance And Mechanism

MgO meso-/macroporous nanostructures exhibited high removal rates for typical As(iii) and F coexisting in groundwater. The novel adsorption mechanisms were confirmed.

scholarly journals Refinement of the Maxwell formula for a composite reinforced by circular cross-section fibres. Part II: using Padé approximants

2020 ◽  
Vol 231 (12) ◽  
pp. 5145-5157
Author(s):  
Igor I. Andrianov ◽  
Jan Awrejcewicz ◽  
Galina A. Starushenko ◽  
Vladimir A. Gabrinets
Keyword(s):  
Composite Materials ◽  
Cross Section ◽  
Volume Fraction ◽  
Effective Properties ◽  
Circular Cross Section ◽  
The Novel ◽  
High Contrast ◽  
Asymptotic Results ◽  
Reinforced Composite ◽  
Coefficient Of Thermal Conductivity

Abstract The effective properties of the fiber-reinforced composite materials with fibers of circle cross section are investigated. The novel estimation for the effective coefficient of thermal conductivity refining the classical Maxwell formula is derived. The method of asymptotic homogenization is used. For an analytical solution of the periodically repeated cell problem the Schwarz alternating process (SAP) was employed. Convergence of this method was proved by S. Mikhlin, S. Sobolev, V. Mityushev. Unfortunately, the rate of the convergence is often slow, especially for nondilute high-contrast composite materials. For improving this drawback we used Padé approximations for various forms of SAP solutions with the following additive matching of obtained expressions. As a result, the solutions in our paper are obtained in a fairly simple and convenient form. They can be used even for a volume fraction of inclusion very near the physically possible maximum value as well as for high-contrast composite constituents. The results are confirmed by comparison with known numerical and asymptotic results.

Improving the Tensile Strength of a Novel Double Hook Design Manufactured by Nanosilica Epoxy Reinforced Aramid/Carbon Composites

2015 ◽  
Vol 760 ◽  
pp. 3-8
Author(s):  
Apostolos Tsagaris ◽  
Dimitrios Tzetzis ◽  
Gabriel Mansour ◽  
Evangelos Hatzikos ◽  
Panagiotis Kyratsis
Keyword(s):  
Composite Materials ◽  
Epoxy Resin ◽  
Tensile Tests ◽  
Tensile Fracture ◽  
Uniaxial Tensile ◽  
Carbon Composites ◽  
The Novel ◽  
Advanced Composite ◽  
Advanced Composite Materials ◽  
Novel Design

This paper presents the novel design of a double hook manufactured with advanced composite materials and nanomaterials. For the preparation of the composite materials an epoxy resin was used while the fiber reinforcement was in the form of hybrid aramid/carbon twill fabric. The nanoparticles were silica nanospheres dispersed in the epoxy matrix. The nanospheres were in the form of a colloidal silica-sol and they were added in the epoxy resin so to form a carefully prepared masterbatch. A series of tensile and fracture toughness tests were performed in order to evaluate the effect of the nanosilica concentration as well as the strength of the hybrid aramid/carbon composites. Upon the design and the manufacture of the innovative geometry of the double hook, comparative uniaxial tensile tests were performed. The results proved that the use of the silica nanoparticles significantly increase the strength of the hook, while affect considerably its tensile fracture behavior.

scholarly journals A Novel Polymer Concrete Composite with GFRP Waste: Applications, Morphology, and Porosity Characterization

2020 ◽  
Vol 10 (6) ◽  
pp. 2060 ◽  
Author(s):  
Emilia Sabău ◽  
Razvan Udroiu ◽  
Paul Bere ◽  
Ivan Buranský ◽  
Cristina-Ştefana Miron-Borzan
Keyword(s):  
Surface Layer ◽  
Composite Materials ◽  
Glass Fibers ◽  
Composite Panel ◽  
Favorable Effect ◽  
Polymer Concrete ◽  
Homogeneous Distribution ◽  
The Novel ◽  
Structural Composite ◽  
Material Composite

Composite materials reinforced with recycled fibers gather a great deal of interest with regards to construction applications. A novel polymer concrete composite was proposed, comprised of a surface layer and a structural composite reinforced with recycled glass fibers. The novel multi-material composite included a large amount of glass-fiber-reinforced polymer (GFRP) waste (30%), which is expected to help protect the environment. Large panels comprised of this polymer concrete composite, which reproduce the appearance of natural stone, were manufactured. A new methodology for porosity analysis of a large panel comprised of a multi-material composite was proposed, utilizing three-dimensional (3D) X-ray computed tomography (CT). The volume of pores was distributed between the constituent composite materials and then statistically analyzed. Homogeneous distribution of the pores within the novel multi-material composite was found. The observed mean porosities of the composite panel were 0.146% for the surface layer material and 31.3% for the structural composite material. The mean density of the panel, determined by the CT density method, was 1.73 g/cm3. The composite materials porosity provides a favorable effect for achieving lightweight structures. Using scanning electron microscopy (SEM) analysis, it was observed that a good connection interface between the constituent composite materials existed.

CERAMIC COMPOSITE MATERIALS WITH HIGH OXIDATION RESISTANCE FOR THE NOVEL AIRCRAFTS (REVIEW)

2014 ◽  
Vol 0 (6) ◽  
pp. 8-8 ◽  
Author(s):  
O.Ju. Sorokin ◽  
◽  
D.V. Grashhenkov ◽  
S.St. Solncev ◽  
S.A. Evdokimov ◽  
...  
Keyword(s):  
Composite Materials ◽  
Oxidation Resistance ◽  
Ceramic Composite ◽  
The Novel ◽  
High Oxidation ◽  
Ceramic Composite Materials ◽  
High Oxidation Resistance

Evaluation of the novel biphasic solvents for CO 2 capture: Performance and mechanism

2017 ◽  
Vol 60 ◽  
pp. 120-128 ◽  
Author(s):  
Xiaobin Zhou ◽  
Fan Liu ◽  
Bihong Lv ◽  
Zuoming Zhou ◽  
Guohua Jing
Keyword(s):  
The Novel ◽  
Performance And Mechanism

Comparative Microstructures of Ion Milled and Electrochemically Thinned Composite Materials

1974 ◽  
Vol 32 ◽  
pp. 546-547
Author(s):  
R.R. Russell
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Composite Materials ◽  
Great Difficulty ◽  
Ion Milling ◽  
Transmission Electron ◽  
Ion Damage ◽  
Intermetallic Composite

Transmission electron microscopy of metallic/intermetallic composite materials is most challenging since the microscopist typically has great difficulty preparing specimens with uniform electron thin areas in adjacent phases. The application of ion milling for thinning foils from such materials has been quite effective. Although composite specimens prepared by ion milling have yielded much microstructural information, this technique has some inherent drawbacks such as the possible generation of ion damage near sample surfaces.

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