scholarly journals Crystalline Structure, Synthesis, Properties and Applications of Potassium Hexatitanate: A Review

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4132 ◽  
Author(s):  
Patricia Ponce-Peña ◽  
Martha Poisot ◽  
Alicia Rodríguez-Pulido ◽  
María Azucena González-Lozano
Keyword(s):  
Material Properties ◽  
Mechanical Performance ◽  
Synthesis Method ◽  
Tunnel Structure ◽  
Chemical Formula ◽  
New Materials ◽  
Structure Synthesis ◽  
Synthesis Properties ◽  
New Applications ◽  
Potassium Hexatitanate

Potassium hexatitanate (PHT) with chemical formula K2Ti6O13 has a tunnel structure formed by TiO2 octahedra sharing edges or corners and with the potassium atoms located in the tunnels. This material has attracted great interest in the areas of photocatalysis, reinforcement of materials, biomaterials, etc. This work summarizes a large number of studies about methods to prepare PHT since particle size can be modified from millimeter to nanometric scale according to the applied method. Likewise, the synthesis method has influenced the material properties as band-gap and the final mechanical performance of composites when the reinforcement is PHT. The knowing of synthesis, properties and applications of PHT is worthwhile for the design of new materials and for the development of new applications taking advantage of their inherent properties.

scholarly journals Nanotube Sheet and Yarn Manufacturing and Commercialization

2021 ◽  
Vol 18 ◽  
pp. 1149-1163
Author(s):  
Mark J. Schulz ◽  
Sung Yong Kim ◽  
Ashley Kubley ◽  
David Mast ◽  
Vesselin Shanov
Keyword(s):  
Economic Development ◽  
Carbon Nanotube ◽  
Material Properties ◽  
Large Scale ◽  
Filler Materials ◽  
Boron Nitride Nanotube ◽  
New Materials ◽  
New Applications ◽  
Industry Professionals ◽  
Future Business

Nanotube macroscale materials such as yarns, tapes, and sheets provide combinations of material properties that are unique relative to existing materials. Although nanotube sheet and yarn commercialization is still an emerging activity, these materials may become important in the future Business and Economics of societies. Therefore, this paper surveys current worldwide efforts toward manufacturing and commercialization of nanotube macroscale materials. The survey will help researchers, investors and economists consider how the new materials might be used in new applications and how the materials might spur economic development. Nanotube macroscale materials consist of yarn, tapes, and sheets, and exclude powdered forms of nanotubes used as filler materials. Both Carbon Nanotube (CNT) and Boron Nitride Nanotube (BNNT) materials are considered. It is anticipated that macroscale sheet and yarn with customizable properties will have broad applications. This paper is organized to provide ideas for possible areas of applications of nanotube yarn and sheet, followed by a survey of current commercialization efforts. Manufacturing barriers that must be overcome to push the development of nanotube macroscale materials toward large scale commercialization are also discussed. The paper also provides references for researchers and industry professionals who may want to further develop and put nanotube macroscale materials into their own applications.

scholarly journals Synthesis, Properties, and Biological Applications of Metallic Alloy Nanoparticles

2020 ◽  
Vol 21 (14) ◽  
pp. 5174
Author(s):  
Kim-Hung Huynh ◽  
Xuan-Hung Pham ◽  
Jaehi Kim ◽  
Sang Hun Lee ◽  
Hyejin Chang ◽  
...  
Keyword(s):  
Synthesis Method ◽  
Metallic Alloy ◽  
Magnetic Characteristics ◽  
Alloy Nanoparticles ◽  
Biological Applications ◽  
Structure Synthesis ◽  
Synthesis Properties ◽  
Monometallic Nanoparticles

Metallic alloy nanoparticles are synthesized by combining two or more different metals. Bimetallic or trimetallic nanoparticles are considered more effective than monometallic nanoparticles because of their synergistic characteristics. In this review, we outline the structure, synthesis method, properties, and biological applications of metallic alloy nanoparticles based on their plasmonic, catalytic, and magnetic characteristics.

Materials technology: Innovations and progress

Impact ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 52-53
Author(s):  
Lucy Sharp
Keyword(s):  
Material Properties ◽  
New Materials ◽  
Medical Problems ◽  
Technology Innovations ◽  
Societal Challenges ◽  
New Material ◽  
Innovative Materials ◽  
The Creation ◽  
Novel Applications

Materials technology is a constantly evolving discipline, with new materials leading to novel applications. For example, new material properties arise from combining different materials into composites. Researching materials can help solve societal challenges, with the creation of innovative materials resulting in breakthroughs in overcoming hurdles facing humankind, including energy challenges and medical problems. Innovative materials breathe new life into industries and spur on scientific and technological discovery.

Material Properties and Design Aspects of Folding Bicycle Frame

2011 ◽  
Vol 264-265 ◽  
pp. 777-782 ◽  
Author(s):  
M.A. Maleque ◽  
M.S. Hossain ◽  
S. Dyuti
Keyword(s):  
Material Properties ◽  
Raw Material ◽  
New Materials ◽  
Materials Properties ◽  
Advantages And Disadvantages ◽  
Bicycle Frame ◽  
Successful Design ◽  
Future Direction ◽  
The Relationship ◽  
Comprehensive Study

successful design of folding bicycle should take into account the function, material properties, and fabrication process. There are some other factors that should be considered in anticipating the behavior of materials for folding bicycle. In order to understand the relationship between material properties and design of a folding bicycle and also for the future direction in new materials with new design, a comprehensive study on the design under different conditions are essential. Therefore, a systematic study on the relationship between material properties and design for folding bicycle has been performed. The advantages and disadvantages matrix between conventional bicycle and folding bicycle is presented for better understanding of the materials properties and design. It was found that the materials properties of the folding bicycle frame such as fatigue and tensile strength are the important properties for the better performance of the frame. The relationship between materials properties and design is not straight forward because the behavior of the material in the finished product could be different from that of the raw material. The swing hinge technique could be a better technique in the design for the folding bicycle frame.

Ferrite

2021 ◽  
Keyword(s):  
High Frequency ◽  
Biomedical Applications ◽  
Organic Dyes ◽  
High Tech ◽  
Hexagonal Ferrites ◽  
Wastewater Remediation ◽  
Structure Synthesis ◽  
Synthesis Properties ◽  
Photocatalytic Applications ◽  
Classification Structure

Ferrites are highly interesting high-tech materials. The book covers their classification, structure, synthesis, properties and applications. Emphasis is placed an biomedical applications, degradation of organic pollutants, high frequency applications, photocatalytic applications for wastewater remediation, solar cell applications, removal of organic dyes and drugs from aquatic systems, and the synthesis of hexagonal ferrites.

scholarly journals Designing Materials and Processes for Strong Polyacrylonitrile Precursor Fibers

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2863
Author(s):  
Hyunchul Ahn ◽  
Sang Young Yeo ◽  
Byoung-Sun Lee
Keyword(s):  
Carbon Fibers ◽  
Material Properties ◽  
Mechanical Performance ◽  
Superior Performance ◽  
Materials Processing ◽  
Effective Strategy ◽  
Precursor Fiber ◽  
Polyacrylonitrile Precursor

Although polyacrylonitrile (PAN)-based carbon fibers have been successfully commercialized owing to their excellent material properties, their actual mechanical performance is still much lower than the theoretical values. Meanwhile, there is a growing demand for the use of superior carbon fibers. As such, many studies have been conducted to improve the mechanical performance of carbon fibers. Among the various approaches, designing a strong precursor fiber with a well-developed microstructure and morphology can constitute the most effective strategy to achieve superior performance. In this review, the efforts used to modulate materials, processing, and additives to deliver strong precursor fibers were thoroughly investigated. Our work demonstrates that the design of materials and processes is a fruitful pathway for the enhancement of the mechanical performance of carbon fibers.

scholarly journals Properties of orb weaving spider glycoprotein glue change during Argiope trifasciata web construction

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Brent D. Opell ◽  
Sarah D. Stellwagen
Keyword(s):  
Young’S Modulus ◽  
Material Properties ◽  
Prey Capture ◽  
Young's Modulus ◽  
Progressive Increase ◽  
New Materials ◽  
Web Documents ◽  
Aqueous Layer ◽  
Argiope Trifasciata ◽  
Web Construction

AbstractAn orb web’s prey capture thread relies on its glue droplets to retain insects until a spider can subdue them. Each droplet’s viscoelastic glycoprotein adhesive core extends to dissipate the forces of prey struggle as it transfers force to stiffer, support line flagelliform fibers. In large orb webs, switchback capture thread turns are placed at the bottom of the web before a continuous capture spiral progresses from the web’s periphery to its interior. To determine if the properties of capture thread droplets change during web spinning, we characterized droplet and glycoprotein volumes and material properties from the bottom, top, middle, and inner regions of webs. Both droplet and glycoprotein volume decreased during web construction, but there was a progressive increase in the glycoprotein’s Young’s modulus and toughness. Increases in the percentage of droplet aqueous material indicated that these increases in material properties are not due to reduced glycoprotein viscosity resulting from lower droplet hygroscopicity. Instead, they may result from changes in aqueous layer compounds that condition the glycoprotein. A 6-fold difference in glycoprotein toughness and a 70-fold difference in Young’s modulus across a web documents the phenotypic plasticity of this natural adhesive and its potential to inspire new materials.

The Effects of Layer-by-Layer Thickness and Fiber Volume Fraction Variation on the Mechanical Performance of a Pressure Vessel

2020 ◽  
Vol 142 (4) ◽  
Author(s):  
Emre Özaslan ◽  
Ali Yetgin ◽  
Bülent Acar ◽  
Volkan Coşkun ◽  
Tarık Olğar
Keyword(s):  
Finite Element ◽  
Pressure Vessel ◽  
Material Properties ◽  
Fiber Volume Fraction ◽  
Mechanical Performance ◽  
Volume Fraction ◽  
Element Model ◽  
Layer By Layer ◽  
Fiber Volume ◽  
Filament Wound

Abstract Due to high stiffness/weight ratio, composite materials are widely used in aerospace applications such as motor case of rockets which can be regarded as a pressure vessel. The most commonly used method to manufacture pressure vessels is the wet filament winding. However, the mechanical performance of a filament wound pressure vessel directly depends on the manufacturing process, manufacturing site environmental condition, and material properties of matrix and fiber. The designed pressure vessel may not be manufactured because of the mentioned issues. Therefore, manufacturing of filament wound composite structures are based on manufacturing experience and experiment. In this study, effects of layer-by-layer thickness and fiber volume fraction variation due to manufacturing process on the mechanical performance were investigated for filament wound pressure vessel with unequal dome openings. First, the finite element model was created for designed thickness dimensions and constant material properties for all layers. Then, the model was updated. The updated finite element model considered the thickness of each layer separately and variation of fiber volume fraction between the layers. Effects of the thickness and fiber volume fraction on the stress distribution along the motor axial direction were shown. Also hydrostatic pressurization tests were performed to verify finite element analysis in terms of fiber direction strain through the motor case outer surface. Important aspects of analyzing a filament wound pressure vessel were addressed for designers.

Sign in / Sign up

Export Citation Format

Share Document