Impact of broken brick on the properties of a cladding composite material based on a secondary polymer binder

2021 ◽  
pp. 13-17
Author(s):  
A. S. UVAROVA ◽  
I. A. VITKALOVA ◽  
E. S. PIKALOV ◽  
O. G. SELIVANOV
Keyword(s):  
Composite Material ◽  
Polymer Binder

Influence of Rubber Particle Size on Functional Properties of a Composite Material Based on Scrap Tires and a Polymer Binder

2020 ◽  
Vol 850 ◽  
pp. 107-111
Author(s):  
Laimonis Mālers ◽  
Agnija Cirvele
Keyword(s):  
Particle Size ◽  
Composite Material ◽  
Functional Properties ◽  
Material Properties ◽  
Rubber Particle ◽  
Polymer Binder ◽  
Scrap Tires ◽  
Elongation At Break ◽  
Rubber Particles ◽  
Purposeful Selection

Functional properties of composite material based on mechanically grinded scrap tires with different particle size of fractioned crumb and polyurethane type polymer binder were investigated to estimate influence of rubber particles size and content on composite material properties (Shore C hardness, compressive stress at 10 % deformation, tensile strength, elastic modulus and elongation at break, apparent density). Optimization possibilities of composite material consisting of rubber particles with different sizes or fractions were investigated. The obtained results show that variation of composition of the composite material by changing size of rubber granulate have definite influence on selected properties of the material. Purposeful selection and mutual combination of rubber particles size included in material can ensure desirable and predictable mechanical properties of composite material.

Composite Material for the Manufacture of Plastic Sleepers

2021 ◽  
Vol 899 ◽  
pp. 150-157
Author(s):  
Valerii I. Kondrashchenko ◽  
C. Wang ◽  
Tatyana A. Matseevich ◽  
Andrey A. Askadskii
Keyword(s):  
Composite Material ◽  
Thermal Expansion ◽  
Reinforced Concrete ◽  
Composite Materials ◽  
Polyvinyl Chloride ◽  
Linear Thermal Expansion ◽  
Polymer Binder ◽  
Internal Stresses ◽  
Mineral Filler ◽  
Railway Transport

The composite materials intended for the manufacture of plastic sleepers were produced, which significantly differ from the materials widely used in railway transport of wooden and reinforced concrete sleepers. The coefficients of linear thermal expansion of the obtained materials are significantly lower. Polyvinyl chloride is used as a polymer binder, and the filler is a mixture of softwood flour with the mineral filler in the form of finely ground chalk. It was shown that by varying the content of the components of the composite, a change in its density is achieved by 19%, and the change in the value of the coefficient of linear thermal expansion depends on the temperature and relaxation of internal stresses in the samples, varying by 18.7 times – from 288.4·10-6 to 15.4·10-6 °C -1.

Polyurethane Binder Mechanical Properties under Different Crosslinking Conditions

2016 ◽  
Vol 721 ◽  
pp. 3-7 ◽  
Author(s):  
Renate Plesuma ◽  
Laimonis Malers
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Elasticity Modulus ◽  
Polymer Binder ◽  
Direct Influence ◽  
Air Humidity ◽  
Crosslinking Degree ◽  
Scrap Tires ◽  
Elongation At Break ◽  
Relative Air Humidity

Mechanical properties of polyurethane type polymer binder with selected reactivity, used for production of the composite material based on scrap tires, were investigated under different crosslinking conditions: temperature, relative air humidity, hardening time. Shore C hardness, tensile strength and elongation at break were selected as main parameters, reflecting crosslinking degree of the prepared polymer binder films. DMA investigation of the samples in tensile mode of loading were realized to clear up influence of deformation circumstances on storage and loss components of the elasticity modulus. Strong correlation between mentioned above mechanical properties of the polymer binder and selected crosslinking conditions of the polymer were obtained. It was affirmed previously, that crosslinking degree of the polymer binder in the same time has direct influence also on mechanical properties of the composite material.

Recycling of Ceramic and Polymeric Wastes in the Production of Surfacing Composite Materials

2019 ◽  
Vol 23 (7) ◽  
pp. 36-41 ◽  
Author(s):  
A.S. Torlova ◽  
I.A. Vitkalova ◽  
E.S. Pikalov ◽  
O.G. Selivanov
Keyword(s):  
Thermal Decomposition ◽  
Composite Material ◽  
Energy Intensity ◽  
Polymer Composite Material ◽  
Polymer Binder ◽  
Polystyrene Foam ◽  
Waste Products ◽  
Waste Polystyrene ◽  
Crushed Brick ◽  
Polymeric Wastes

Presents the results of research on the development of a method for joint utilization of polystyrene foam and brick waste with obtaining a polymer composite material for the production of wall cladding products. This method consists in grinding the waste polystyrene foam with their subsequent dissolution in carbon tetrachloride and cold mixing the resulting solution with a crushed brick. This method reduces the energy intensity of production, eliminates thermal decomposition of the polymer binder during processing and makes it possible to jointly dispose of two types of large-tonnage waste. Products that can be obtained from the developed material, according to the values of frost resistance and water absorption, meet the requirements for products for external facing of walls and sole plates of facades.

scholarly journals Correlation between some technological parameters and properties of composite material based on recycled tires and polymer binder

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Renate Plesuma ◽  
Laimonis Malers
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Compressive Stress ◽  
Apparent Density ◽  
Compressive Modulus ◽  
Polymer Binder ◽  
Molding Pressure ◽  
Technological Parameters ◽  
Formation Conditions

AbstractThe present article is dedicated to the determination of a possible connection between the composition, specific properties of the composite material and molding pressure as an important technological parameter. Apparent density, Shore C hardness, compressive modulus of elasticity and compressive stress at 10% deformation was determined for composite material samples. Definite formation conditions – varying molding pressure conditions at ambient temperature and corresponding relative air humiditywere realized. The results obtained showed a significant effect of molding pressure on the apparent density, mechanical properties of composite material as well as on the compressive stress change at a cyclic mode of loading. Some general regularities were determined - mechanical properties of the composite material, as well as values of Shore C hardness increases with an increase of molding pressure.

Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

1991 ◽  
Vol 49 ◽  
pp. 570-571
Author(s):  
E. Sukedai ◽  
H. Mabuchi ◽  
H. Hashimoto ◽  
Y. Nakayama
Keyword(s):  
Mechanical Properties ◽  
Image Processing ◽  
Composite Material ◽  
Intermetallic Compound ◽  
Side Surface ◽  
High Resolution Electron Microscopy ◽  
Hexagonal Structure ◽  
Second Phase ◽  
Resolution Electron ◽  
Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

The microstructure of a TiB2/Ti-47 Al composite material

1989 ◽  
Vol 47 ◽  
pp. 674-675
Author(s):  
O. Popoola ◽  
A.H. Heuer ◽  
P. Pirouz
Keyword(s):  
Composite Material ◽  
Ion Beam ◽  
Chemical Properties ◽  
Intermetallic Alloys ◽  
Transmission Electron ◽  
Diamond Polishing ◽  
Al Composite ◽  
The Matrix ◽  
Argon Ion ◽  
And Chemical Properties

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.

Application of pyrometer and standard sample to determine surface temperature of studied materials

2019 ◽  
pp. 9-13
Author(s):  
V.Ya. Mendeleyev ◽  
V.A. Petrov ◽  
A.V. Yashin ◽  
A.I. Vangonen ◽  
O.K. Taganov
Keyword(s):  
Composite Material ◽  
Surface Temperature ◽  
Relative Error ◽  
Wavelength Range ◽  
Standard Sample ◽  
A Priori ◽  
Temperature Changes ◽  
Surface Temperatures ◽  
Relative Errors ◽  
Normal Emissivity

Determining the surface temperature of materials with unknown emissivity is studied. A method for determining the surface temperature using a standard sample of average spectral normal emissivity in the wavelength range of 1,65–1,80 μm and an industrially produced Metis M322 pyrometer operating in the same wavelength range. The surface temperature of studied samples of the composite material and platinum was determined experimentally from the temperature of a standard sample located on the studied surfaces. The relative error in determining the surface temperature of the studied materials, introduced by the proposed method, was calculated taking into account the temperatures of the platinum and the composite material, determined from the temperature of the standard sample located on the studied surfaces, and from the temperature of the studied surfaces in the absence of the standard sample. The relative errors thus obtained did not exceed 1,7 % for the composite material and 0,5% for the platinum at surface temperatures of about 973 K. It was also found that: the inaccuracy of a priori data on the emissivity of the standard sample in the range (–0,01; 0,01) relative to the average emissivity increases the relative error in determining the temperature of the composite material by 0,68 %, and the installation of a standard sample on the studied materials leads to temperature changes on the periphery of the surface not exceeding 0,47 % for composite material and 0,05 % for platinum.

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