Highly filled, non-toxic of material with increased strength and fire resistance

2021 ◽  
pp. 250-255
Author(s):  
N.V. Ryabinina ◽  
G.I. Shaidurova ◽  
M.I. Tokareva
Keyword(s):  
Composite Material ◽  
Elevated Temperatures ◽  
Glass Fibers ◽  
Chemical Compounds ◽  
Liquid Sodium ◽  
Subsequent Stage ◽  
Heterogeneous Structure ◽  
Open Flame ◽  
Sodium Glass ◽  
Increased Strength

Presents the results of research and testing of a newly developed composite material, the unique properties of which make it possible to use it, both as a special fire-resistant coating for habitable objects and in construction (door blocks, liners for effective thermal insulation). The heterogeneous structure of the cured composite does not contain toxic components, and when exposed to an open flame, it is even more hardened as a result of reflow and does not emit harmful chemical compounds. The developed material was obtained using dispersion and mechanical activation by mixing individual components with subsequent stage curing at normal and elevated temperatures., using sodium soda glass as a binder. Unique properties are provided by the presence in the recipe composition of mainly silicon-containing components — a mixture of dispersed fillers, including discrete glass fibers with a length of 4...7 mm, using liquid sodium glass as a binder.

scholarly journals EFFECTS OF STRAIN RATE AND TEMPERATURE ON THE MECHANICAL PROPERTIES OF GFRP COMPOSITES

2011 ◽  
Vol 10 (1-2) ◽  
pp. 03 ◽  
Author(s):  
J. L. V. Coelho ◽  
J. M. L. Reis
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Strain Rate ◽  
Elevated Temperatures ◽  
Mechanical Response ◽  
Polymer Matrix Composites ◽  
Glass Fibers ◽  
Research Data ◽  
Matrix Composites ◽  
Gfrp Composites

In this work, the mechanical response of a composite material based on glass fibers embedded in an epoxy resin was experimentally studied as a function of strain rate and temperature. It was shown that for the temperature range from 23 to 100 °C the elastic properties of the composite are significant affected and the strain rate influences only the ultimate strength. The experimental research data and the approaches presented in this work should significantly extend our knowledge of the effect of elevated temperatures on the mechanical behavior of high temperature polymer matrix composites.

Rupture by impact-induced fatigue of a copper foil strip embedded in a multifunctional composite material

2021 ◽  
pp. 002199832199432
Author(s):  
Yacine Ouroua ◽  
Said Abdi ◽  
Imene Bachirbey
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Glass Fibers ◽  
Energy Levels ◽  
Fatigue Tests ◽  
Repeated Impact ◽  
Aeronautical Industry ◽  
Repeated Impacts ◽  
Cracking Mode ◽  
The Impact

Multifunctional composite materials are highly sought-after by the aerospace and aeronautical industry but their performance depends on their ability to sustain various forms of damages, in particular damages due to repeated impacts. In this work we studied the mechanical behavior of a layered glass-epoxy composite with copper inserts subjected to fatigue under repeated impacts with different energy levels. Damage evolution as a function of impact energy was carefully monitored in order to determine the effect of the copper inserts on mechanical characteristics of the multifunctional composite, such as endurance and life. Results of repeated impact tests show that electric current interruption in the copper inserts occurs prior to the total perforation of the composite material, and after about 75% of the total number of impacts to failure. This is the case for the three energy levels considered in this study, [Formula: see text] = 2, 3 and 4 Joules. The epoxy resin was dissolved chemically in order to preserve the mechanical structure of the damaged copper inserts and the composite fibers for further inspection and analysis. Scanning electron microscopy (SEM) of the fractured copper inserts revealed interesting information on the nature of the damage, including information on plastic deformation, strain hardening, cracking mode, temperature increase during the impacts, and most importantly the glass fibers and their roles during the impact-fatigue tests.

INTERMETALLIC COMPOUND AlxTi – ARE PROMISING MATERIAL FOR HIGH ELEVATED TEMPERATURES (review) Part 1. The crystaline structure and properties of the intermetallic compound Al2Ti

2021 ◽  
pp. 28-43
Author(s):  
N.A. Nochovnaya ◽  
◽  
V.I. Ivanov ◽  
L.Yu. Avilochev ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Intermetallic Compound ◽  
Lamellar Structure ◽  
Power Plants ◽  
Elevated Temperatures ◽  
Texture Formation ◽  
Structure And Properties ◽  
High Temperature Alloys ◽  
Transformation Mechanisms ◽  
Increased Strength

The Al2Ti intermetallic compound is the most promising base for high-temperature alloys designed for advanced power plants. This work provides an overview of the structures of binary alloys concerning to the Ti–Al system, as well as the phase transformation mechanisms and the peculiarities of plastic deformation of alloys. The alloys which phase composition is represented by a mixture of r-Al2Ti+γ-TiAl with a lamellar structure show anomalous mechanical properties depending on texture formation and grain size. These alloys possess increased strength and decreased plasticity at elevated temperatures.

Thermal and mechanical fatigue of a PA66/glass fibers composite material

2006 ◽  
Vol 28 (10) ◽  
pp. 1348-1352 ◽  
Author(s):  
V BELLENGER ◽  
A TCHARKHTCHI ◽  
P CASTAING
Keyword(s):  
Composite Material ◽  
Glass Fibers ◽  
Mechanical Fatigue

Polyurethane derived from castor oil reinforced with long cotton fibers: Static and dynamic testing of a novel eco-friendly composite material

2020 ◽  
Vol 54 (22) ◽  
pp. 3125-3142
Author(s):  
Romeu RC da Costa ◽  
Eduardo S Sato ◽  
Marcelo L Ribeiro ◽  
Ricardo de Medeiros ◽  
André FC Vieira ◽  
...  
Keyword(s):  
Composite Material ◽  
Castor Oil ◽  
Failure Modes ◽  
Mechanical Performance ◽  
Volume Fraction ◽  
Glass Fibers ◽  
Natural Fibers ◽  
Dynamic Responses ◽  
Cotton Fibers ◽  
The Novel

A novel eco-friendly composite material made of polyurethane derived from castor oil reinforced with long cotton fibers was developed. A set of comparative analyses comprising static and dynamic tests was established using specimens made of castor oil-based polyurethane reinforced by glass fibers, and epoxy reinforced by glass and cotton fibers. The manufacturing method and estimation of fiber volume fraction of the specimens were described in detail. Tensile and flexural tests were performed to evaluate the mechanical performance of the novel laminate. Fractographic post-mortem examinations assessed the quality of the fiber–matrix interaction and allowed direct observation of the failure modes. Surface treatment of natural fibers appears necessary to improve the adhesion of the natural fibers to the matrix. Dynamic responses are discussed, considering natural frequencies and modal damping coefficients. In this context, the potentialities and the limitations of using the novel eco-friendly composite material as structural parts are discussed.

X‐Ray Compton Scattering Study of Liquid Sodium at Elevated Temperatures

2020 ◽  
Vol 257 (11) ◽  
pp. 2000187
Author(s):  
Kazuhiro Matsuda ◽  
Koji Kimura ◽  
Toru Hagiya ◽  
Yukio Kajihara ◽  
Masanori Inui ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Elevated Temperatures ◽  
Liquid Sodium ◽  
X Ray ◽  
Scattering Study

scholarly journals Nature Conservation Technology for Producing Slag-Foam Glass as a Structural and Thermal Insulating Material

2018 ◽  
Vol 41 ◽  
pp. 02017 ◽  
Author(s):  
Natalia Gilyazidinova ◽  
Nadezhda Rudkovskaya ◽  
Tatiana Santalova
Keyword(s):  
Foam Glass ◽  
Glass Production ◽  
Average Density ◽  
Liquid Sodium ◽  
Insulation Material ◽  
Thermal Insulating ◽  
Soluble Glass ◽  
Ferroalloy Plant ◽  
Conservation Technology ◽  
Sodium Glass

The purpose of the research is to determine the starting material composition, the conditions for its heat treatment and operation, and also the development of the recommendations on the technology of manufacturing and use of slag-foam glass as a structural and thermal insulation material for low-rise construction. Research and development of the composition and technology of ferrosilicate dust - a secondary product of the Novokuznetsk ferroalloy plant and Kemerovo chemical enterprises - slag-foam glass production, were carried out taking intoaccount the need for recycling of waste generated during the production process. The liquid sodium glass production waste is a mixture offerrosilicate dust that is not completely exhausted in the reactors and anaqueous Na2OSiO2 solution. Its density varies from 1.2 g/cm3 to 1.5 g/cm3, and the binding properties are extremely unstable, they depend on the soluble glass and water ratio in the waste. The use of this material as the basis for the production of structural and thermal insulating slag-foamglass with the stable strength index, the average density and the long-term durability is quite relevant.

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