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COMPREHENSIVE ASSESSMENT OF THE QUALITY OF GAS FROM RECOVERED
FIBERS
Yuldasheva Mavluda To'ramuradovna
Jizzakh Polytechnic Institute (Uzbekistan)
Ochilov Tulkin Ashurovich
Tashkent Institute of Textile and Light Industry (Uzbekistan)
Annotation:
in this article, the complex evaluates the physical and mechanical properties of
fabrics obtained from a mixture of different compositions and recycled fibers at the joint venture
of Safira-Samira Textile LLC, EURASIYA ALLIANCE TEX LLC in the Bukhara region and
CHACH TEX LLC in the Chirchik district of Tashkent area and recommended the best option.
Key words:
experimental, organoleptic, expert, sociological, computational, differential,
complex and mixed assessment
1. INTRODUCTION
The development of scientific and technical progress in the world and the increase in the volume
of production of textile products lead to an increase in consumer waste, and sometimes
secondary material resources in production, as a result, it is important to recycle them now.
Research aimed at improving the quality of renewable fibers and determining their technological
reserves is of urgent importance in the current conditions of shortage of raw materials. The use
of such raw materials for the production of consumer goods leads to a decrease in the cost of
finished products, it is important for the rhythmic operation of the enterprise and more rational
use of raw materials [1].
In the global textile industry, research and development activities aimed at the effective use of
raw materials and the development of new scientific and technical solutions of resource-efficient
technologies and technical tools for competitive textiles are being carried out. In this regard,
special attention is paid to the development of an effective technology for obtaining quality raw
materials from the secondary material resources of the sewing and knitting industry, and to save
energy and resources, to develop an energy-resource-efficient technology that realizes the
production of finished products from the obtained raw materials, and to substantiate its
technological process, parameters and work modes.
Globally, fibers obtained from waste and secondary material resources from the sewing process
make up 25% of all textile raw materials. This is a huge stock that can be used for production.
However, only 10% of these scraps are used. Basically, they are processed into materials that
cannot be used for various purposes, or they are made into simpler, lower-cost ropes, furniture
and technical fabrics, for wiping and other purposes [2].
In our republic, comprehensive measures are currently being taken to develop resource-saving
techniques and technologies that allow effective use of secondary material resources, and certain
results are being achieved. On the development strategy of the new Uzbekistan for 2022-2026,
among other things, important tasks have been determined, including "improving techniques and
technologies in the production of new types of competitive products through the effective use of
secondary material resources" is defined as the most important. In the implementation of these
tasks, including the production of a new assortment of finished products from a mixture of
different fibers and secondary material resources, as well as the high-quality processing
necessary for their export, it is important to create technically and technologically modernized
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machines that perform in the prescribed manner.
As the need for textile fibers increases, the volume of waste and secondary raw materials
generated during their processing also increases.
The evaluation of the quality of gas production is based on the results of the determination and
measurement of its quality indicators, as well as the comparison with standard and regulatory
documents. Because the methods of determining gas properties are mainly detailed in standards
and other normative documents [3].
Depending on the nature of the complex assessment, the quality indicators of the gases are
divided into real and approximate complex assessment.
The advantage of a comprehensive assessment is that it concludes on a number of final
assessments. This assessment is not without its advantages and disadvantages, that is, we will not
have complete information about its individual properties. In order to choose the right raw
material, it is necessary to know the rational use of gas during the process management and use
[4].
A comprehensive assessment of quality can be obtained from different calculations of individual
quality indicators. The average composite assessment may not change according to the level of
several quality indicators, some of them may have a lower level, and some may have a higher
level [4].
2. METHODS
Increasing the competitiveness of textile products, optimizing the assortment and structural
characteristics, as well as reducing the consumption of materials and the cost of raw materials,
cannot be imagined. The rational and efficient use of textile and garment scraps and secondary
material resources (IMR) received from the population and enterprises has a direct impact on the
development and recovery of the local textile industry. Universal technologies and equipment
developed on the basis of newly created or modernized existing aggregates and mechanisms used
in textile production are of particular importance.
Thus, it is possible to complete a comprehensive assessment without changing the individual
quality indicators of the gas.
3. RESULTS
Based on the physico-mechanical properties of gasses obtained from a mixture of different
composition and processed fibers, a comprehensive evaluation was carried out and the diagram is
given in Fig. 1.
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Рт, Н
Ра Н
,
В,
см /см ·сек
3
2
И,цикл
минг айл.
1160
1120
1080
1040
1000
960
920
880
840
315
330
345
360
375
390
405
420
435
450
570
540
510
480
450
420
390
360
330
55
59,5
59
58 5
,
58
57 5
,
57
56 5
,
56
55,5
23 22
21
20 19
18
17
16 15
14
300
ат, %
300
аа, %
68
66
64
62
60
58
56
54
52
50
800
I
III
II
IV
Figure 1. Diagram of comprehensive assessment of quality indicators of gasses obtained from a
mixture of different composition and processed fibers.
A comparative histogram of the comprehensive evaluation based on the physical and mechanical
properties of gasses obtained from a mixture of different compositions and processed fibers is
presented in Fig. 2.
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Figure 2. Comparative histogram of the quality indicators of gasses obtained from a mixture of
processed fibers with different composition.
The analysis of the results of the comprehensive assessment based on the physico-mechanical
properties of the gauzes obtained from a mixture of different composition and processed fibers
showed that the area of polygons according to the quality indicators of the gasses obtained
from a mixture of 10% nitron, 60% cotton and 30% secondary fibers under production
conditions is 4875 mm
2
, 1- The area of polygons according to the quality indicators of the gas
obtained according to the option was 9619 mm
2
, the polygon area according to the quality
indicators of the gas obtained according to the 2nd option was 6171 mm
2
, the area of polygons
according to the quality indicators of the gas obtained according to the 3rd option was 1505 mm
2
.
If we compare the obtained results with the quality indicators of the gauze obtained from a
mixture of 10% nitron, 60% cotton and 30% secondary fibers under production conditions, the
area of polygons according to the quality indicators of the gauze obtained according to option 1
increased by 49.4%, The area of polygons according to the quality indicators of gas obtained
according to option 2 increased by 21.1%, according to the quality indicators of gas obtained
according to option 3, the area of polygons decreased by 69.1%.
4. CONCLUSION
Based on the results of a comprehensive assessment of the physico-mechanical properties of
gasses obtained from a mixture of different composition and processed fibers, it was determined
that the area of polygons according to the quality indicators of gasses obtained according to
option 1 is higher than the quality indicators of gasses obtained according to other options.
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