Bamboo Cellulose Gel/MMT Polymer Nanocomposites for High Strength Materials

2021 ◽  
pp. 131-157
Author(s):  
Md Rezaur Rahman ◽  
Muhammad Khusairy Bin Bakri
Keyword(s):  
Polymer Nanocomposites ◽  
High Strength ◽  
Cellulose Gel

Layered Clay Rubber Composites

2013 ◽  
Vol 571 ◽  
pp. 197-213 ◽  
Author(s):  
Wilson Runcy ◽  
Chandran Nithin ◽  
Thomas Sabu
Keyword(s):  
Aspect Ratio ◽  
Polymer Nanocomposites ◽  
High Aspect Ratio ◽  
Gas Permeability ◽  
Layered Silicate ◽  
High Strength ◽  
Polymer Science ◽  
Layered Clays ◽  
Layered Clay ◽  
The Many

The field of nanotechnology is one of the most popular areas for current research and development in virtually all technical disciplines. This obviously includes polymer science and technology. In recent year, researchers have been working on a new scale of reinforcement by incorporating a fine dispersion of clay silicatelayers in the polymer matrix to obtain polymer nanocomposites. Nanoscale layered clays, due to their high aspect ratio and high strength, can play an important role in forming effective polymer nanocomposites. Polymer nanocomposites have received much attention due to its large surface area and very high aspect ratio. Polymer nanocomposites especially rubber based nanocomposites is one of the many composite materials in which researchers and engineers have shown great interest due to their potential to be used in critical applications. Polymer layered silicate (PLS) nanocomposites often exhibit remarkable improvement in materials properties when compared with the virgin polymer or conventional micro and macro composites. These improvements can include high moduli and tear strength, improved heat resistance and electrical properties, decreased gas permeability, swelling to solvents and flammability.

Isolation of Aramid Nanofibers for High Strength and Toughness Polymer Nanocomposites

2017 ◽  
Vol 9 (12) ◽  
pp. 11167-11175 ◽  
Author(s):  
Jiajun Lin ◽  
Sun Hwi Bang ◽  
Mohammad H. Malakooti ◽  
Henry A. Sodano
Keyword(s):  
Polymer Nanocomposites ◽  
High Strength ◽  
Strength And Toughness

A green technique to prepare uniform amine capped multi-walled carbon nanotubes to fabricate high strength, protein resistant polymer nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15524-15533 ◽  
Author(s):  
Tanya Das ◽  
Sunanda Roy ◽  
Sun Ting ◽  
Liying Zhang ◽  
Yongmei Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Nanocomposites ◽  
High Strength ◽  
Multi Walled Carbon Nanotubes ◽  
Amine Grafting ◽  
Protein Resistant ◽  
Green Technique ◽  
Walled Carbon Nanotubes ◽  
Uv Ozone

Efficient amine grafting on MWCNTs by double UV-ozone induced grafting, and its role in biomaterials.

scholarly journals High-Strength, Healable, Supramolecular Polymer Nanocomposites

2012 ◽  
Vol 134 (11) ◽  
pp. 5362-5368 ◽  
Author(s):  
Justin Fox ◽  
Jeong J. Wie ◽  
Barnaby W. Greenland ◽  
Stefano Burattini ◽  
Wayne Hayes ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
High Strength ◽  
Supramolecular Polymer

scholarly journals Hybridization of MMT/Lignocellulosic Fiber Reinforced Polymer Nanocomposites for Structural Applications: A Review

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1355
Author(s):  
Aisyah Humaira Alias ◽  
Mohd Nurazzi Norizan ◽  
Fatimah Athiyah Sabaruddin ◽  
Muhammad Rizal Muhammad Asyraf ◽  
Mohd Nor Faiz Norrrahim ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
In Situ Polymerization ◽  
Research Effort ◽  
High Strength ◽  
Industrial Applications ◽  
Water Soluble ◽  
Lignocellulosic Fibers ◽  
Lignocellulosic Fiber ◽  
Structural Applications ◽  
Significant Research

In the recent past, significant research effort has been dedicated to examining the usage of nanomaterials hybridized with lignocellulosic fibers as reinforcement in the fabrication of polymer nanocomposites. The introduction of nanoparticles like montmorillonite (MMT) nanoclay was found to increase the strength, modulus of elasticity and stiffness of composites and provide thermal stability. The resulting composite materials has figured prominently in research and development efforts devoted to nanocomposites and are often used as strengthening agents, especially for structural applications. The distinct properties of MMT, namely its hydrophilicity, as well as high strength, high aspect ratio and high modulus, aids in the dispersion of this inorganic crystalline layer in water-soluble polymers. The ability of MMT nanoclay to intercalate into the interlayer space of monomers and polymers is used, followed by the exfoliation of filler particles into monolayers of nanoscale particles. The present review article intends to provide a general overview of the features of the structure, chemical composition, and properties of MMT nanoclay and lignocellulosic fibers. Some of the techniques used for obtaining polymer nanocomposites based on lignocellulosic fibers and MMT nanoclay are described: (i) conventional, (ii) intercalation, (iii) melt intercalation, and (iv) in situ polymerization methods. This review also comprehensively discusses the mechanical, thermal, and flame retardancy properties of MMT-based polymer nanocomposites. The valuable properties of MMT nanoclay and lignocellulose fibers allow us to expand the possibilities of using polymer nanocomposites in various advanced industrial applications.

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

The Nature of Delta Phase Precipitation in Inconel 718

1982 ◽  
Vol 40 ◽  
pp. 724-725
Author(s):  
L. S. Lin ◽  
C. C. Law
Keyword(s):  
Inconel 718 ◽  
Base Alloy ◽  
High Strength ◽  
Physical Metallurgy ◽  
Nickel Base Alloy ◽  
Phase Precipitation ◽  
Weight Percentage ◽  
Delta Phase ◽  
The Subject ◽  
Nickel Base

Inconel 718, a precipitation hardenable nickel-base alloy, is a versatile high strength, weldable wrought alloy that is used in the gas turbine industry for components operated at temperatures up to about 1300°F. The nominal chemical composition is 0.6A1-0.9Ti-19.OCr-18.0Fe-3Mo-5.2(Cb + Ta)- 0.1C with the balance Ni (in weight percentage). The physical metallurgy of IN 718 has been the subject of a number of investigations and it is now established that hardening is due, primarily, to the formation of metastable, disc-shaped γ" an ordered body-centered tetragonal structure (DO2 2 type superlattice).

Physical, Chemical, and Crystallographic Characterization of Anodic Coatings on High Strength Aluminum Base Alloys

1976 ◽  
Vol 34 ◽  
pp. 636-637
Author(s):  
R. E. Herfert ◽  
N. T. McDevitt
Keyword(s):  
Sulfuric Acid ◽  
Salt Spray ◽  
High Strength ◽  
Environmental Stability ◽  
Anodic Films ◽  
Sodium Dichromate ◽  
Corrosion Resistant ◽  
Aerospace Applications ◽  
Bond Strengths ◽  
Adhesive Bonded Joints

Durability of adhesive bonded joints in moisture and salt spray environments is essential to USAF aircraft. Structural bonding technology for aerospace applications has depended for many years on the preparation of aluminum surfaces by a sulfuric acid/sodium dichromate (FPL etch) treatment. Recently, specific thin film anodizing techniques, phosphoric acid, and chromic acid anodizing have been developed which not only provide good initial bond strengths but vastly improved environmental durability. These thin anodic films are in contrast to the commonly used thick anodic films such as the sulfuric acid or "hard" sulfuric acid anodic films which are highly corrosion resistant in themselves, but which do not provide good initial bond strengths, particularly in low temperature peel.The objective of this study was to determine the characteristics of anodic films on aluminum alloys that make them corrosion resistant. The chemical composition, physical morphology and structure, and mechanical properties of the thin oxide films were to be defined and correlated with the environmental stability of these surfaces in humidity and salt spray. It is anticipated that anodic film characteristics and corrosion resistance will vary with the anodizing processing conditions.

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