scholarly journals ДОСЛІДЖЕННЯ ОСОБЛИВОСТЕЙ ПРИСКОРЕНОГО РОЗКЛАДУ ВТОРИННИХ ПОЛІОЛЕФІНІВ

2018 ◽  
Vol 122 (3) ◽  
pp. 32-37
Author(s):  
Н. В. Сова ◽  
Б. М. Савченко ◽  
В. Г. Хоменко ◽  
О. В. Талалай
Keyword(s):  
Artificial Aging ◽  
Constant Pressure ◽  
Strength Properties ◽  
Ash Content ◽  
Capillary Viscometer ◽  
Efficient Technology ◽  
X Ray ◽  
Accelerated Degradation ◽  
Aging Conditions

Investigation of the features and conditions of accelerated degradation of films based on PE wastes to create and develop an efficient technology for the utilization of flexible polyolefin packaging. The chemical composition of the inorganic residue after the burning of polymers wastes was determined by X-ray fluorescence method. The determination of the MFI of PE was carried out in accordance with ISO 1133: 1997 on a capillary viscometer of constant pressure at a temperature (190 ± 0.5) °С and a weight of 2,16 kg. Deformation-strength properties - according to ASTM D638. Ash content - according to ISO 3451-2: 1998 «Plastics. Determination of ash content». The ability to accelerate the degradation of polyolefine wastes in an environment was established. The changes of mechanical properties of PE films of different composition in conditions of artificial aging were investigated. The ability of calcium carbonate to exhibit the effect of oxide additives in PE films during the aging process was revealed. The features of accelerated degradation of polyolefine wastes in artificial aging conditions were first discovered and investigated. Obtained initial data for the production of PE film technology based on polyolefine wastes, then capable of accelerated degradation under environmental conditions

scholarly journals ПОЛІМЕР-ПОЛІМЕРНИЙ КОМПОЗИТ НА ОСНОВІ ВІДХОДІВ ЗШИТОГО ЕТИЛЕНВІНІЛАЦЕТАТУ

2019 ◽  
Vol 128 (6) ◽  
pp. 64-70
Author(s):  
Б. П. Савчук ◽  
Б. М. Савченко ◽  
Н. В. Сова ◽  
І. М. Костюк
Keyword(s):  
Mechanical Properties ◽  
Melting Point ◽  
Polymer Composite ◽  
Constant Pressure ◽  
Capillary Viscometer ◽  
Hydrostatic Weighing ◽  
Weighing Method ◽  
Hydrostatic Weighing Method

Development of technology for the processing of cross liked EVA waste, followed by the use of polymer / polymer composite PVC / EVA as a filler. Method. The determination of the MFI was carried out in accordance with ISO 1133: 1997 on a capillary viscometer of constant pressure at a temperature of (190 ± 0,5) ° С and a weight of 2,16 kg. The thermostability  and  melting  point  are  determined  using  the  RM-200C  Hapro  rheometer  plastograph.  The mechanical properties were determined on a bursting machine according to the ASTM D638. Hardness - using  a  hard-gauge  with  a  Shore-D  scale,  the  density  by  hydrostatic  weighing  method  on  the  analytical scales RADWAG AS-X2.

scholarly journals DETERMINATION OF ASH CONTENT IN COAL BY X-RAY FLUORESCENCE ANALYSIS Authors D Baimolda

2021 ◽  
Vol 73 (1) ◽  
pp. 82-84
Author(s):  
D. Baimolda ◽  
◽  
T. Cechak ◽  
Sh. Shyngysova ◽  
◽  
...  
Keyword(s):  
Nuclear Physics ◽  
Coal Ash ◽  
Fluorescence Analysis ◽  
Ash Content ◽  
Environmental Damage ◽  
Coal Quality ◽  
X Ray ◽  
Burning Coal

This article discusses the advantages of X-ray fluorescence analysis (XRF) techniques for the determination of ash in coal. The quality of coal depends on the amount of ash contained in it. On the other hand, ash causes irreversible environmental damage when using coal as a source of energy. Since coal is considered as the most important source of energy, coal quality is directly related to ash, which correlates with its non-combustible minerals and elements. Some elements such as S (sulfur), Ti (titanium), Ca (calcium), Fe (iron) after burning coal can have an adverse impact on the environment. Thus, we have demonstrated in this study how we can determine the ash content consisting of noncombustible minerals in the composition of coal and, thus, assess the quality of coal using X-ray fluorescence research. It also describes how we can determine coal ash samples using the XRF analyzer 123-1 in online, which is one of the most optimal methods in nuclear physics.

Rapid Determination of Ash in Coal by Compton Scattering, Ca, and Fe X-Ray Fluorescence

1979 ◽  
Vol 23 ◽  
pp. 45-55 ◽  
Author(s):  
Jacques Renault
Keyword(s):  
New Mexico ◽  
Fluorescence Spectroscopy ◽  
Absorption Coefficient ◽  
Compton Scattering ◽  
Rapid Determination ◽  
Ash Content ◽  
Average Error ◽  
Compton Wavelength ◽  
X Ray

AbstractThe intensity of Compton scattering, Fe, and Ca chatacteristic radiation can be used to estimate the amount of ash in coal by Xray fluorescence spectroscopy. Mo, W, and Cr radiation were used to study a suite of New Mexico coals, and the best results were obtained with Mo and W X-ray tubes. If the actual concentrations of Fe2O3 and CaO and the mass absorption coefficient, μ*, at the Compton wavelength of scattered Mo K radiation can be determined, the regression equation:%Ash - 24.2μ* - 6.28(%Fe2O3) - 1.96(%CaO) - 3.4estimates the ash content with an average error of 0.5% ash at 0.71Å.

A Simple Graphical Procedure for Rapid Estimation of Ash in Coal by X-Ray Back-Scattering

1985 ◽  
Vol 39 (3) ◽  
pp. 470-472
Author(s):  
H. D. Pandey ◽  
M. S. Prasad
Keyword(s):  
Rapid Determination ◽  
Calibration Procedure ◽  
Ash Content ◽  
Regression Equation ◽  
Rapid Estimation ◽  
X Ray ◽  
Back Scattering

This paper describes a simple graphical calibration procedure for rapid determination of ash content in coal samples. The results obtained with this procedure are compared with those obtained earlier with the use of a regression equation. The two results are found to be in agreement.

Determination of coal ash content by the combined x-ray fluorescence and scattering spectrum

2018 ◽  
Vol 89 (2) ◽  
pp. 023103 ◽  
Author(s):  
I. F. Mikhailov ◽  
A. A. Baturin ◽  
A. I. Mikhailov ◽  
S. S. Borisova ◽  
L. P. Fomina
Keyword(s):  
Coal Ash ◽  
Ash Content ◽  
X Ray ◽  
Scattering Spectrum

Determination of Sulfur, Ash, and trace Element Content of Coal, Coke, and Fly Using Multielement Tube-Excied X-ray Fluorescence Analsis

1976 ◽  
Vol 20 ◽  
pp. 431-436
Author(s):  
J. A. Cooper ◽  
B. D. Wheeler ◽  
G. J. Wolfe ◽  
D. M. Bartell ◽  
D. B. Schlafke
Keyword(s):  
Trace Elements ◽  
Fly Ash ◽  
Trace Element ◽  
Trace Element Content ◽  
Fluorescence Analysis ◽  
Major And Trace Elements ◽  
Average Concentration ◽  
Ash Content ◽  
X Ray

A procedure using tube excited energy dispersive x-ray fluorescence analysis with interelement corrections has been developed for multielement analysis of major and trace elements and ash content of coal, coke, and fly ash. The procedure uses pressed pellets and an exponential correction for interelement effects. The average deviations ranged from about 0.0003% for V at an average concentration of about .003% to 0.1% for S at an average concentration of 4%. About 25 elements were measured and 100 second minimum detectable concentrations ranged from about one part per million for elements near arsenic to about one tenth of one percent for sodium.

scholarly journals A Comparison of X-ray Method with β-ray Method in the Determination of Ash Content in Coal

RADIOISOTOPES ◽  
1962 ◽  
Vol 11 (2) ◽  
pp. 157-162
Author(s):  
Hisashi MORI ◽  
Sadaichiro TAIRA
Keyword(s):  
Ash Content ◽  
Ray Method ◽  
X Ray

Determination of the ash content of coal by multi-element x-ray fluorescence analysis

1984 ◽  
Vol 13 (4) ◽  
pp. 151-152
Author(s):  
Bohdan Dziunikowski ◽  
Aleksander Stochalski
Keyword(s):  
Fluorescence Analysis ◽  
Ash Content ◽  
X Ray
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