THEORETICAL ASPECTS IN THE FORMATION OF
PEDAGOGICAL SCIENCES
International scientific-online conference
110
COMPARATIVE ANALYSIS OF TECHNOLOGICAL INDICATORS OF
COTTON FIBERS FROM VARIOUS SELECTION VARIETIES
Berdalieva Mokhlaroyim Abdulkhamid kizi
doctoral student;
Sarimsakov Olimjon Sharipjanovich
Doctor of technical sciences, professor
https://doi.org/10.5281/zenodo.15689553
Abstract:
This scientific article investigates the physical-mechanical and
spinning-technological properties of cotton fibers from the selection varieties
"Namangan 77" and "C 82/95" under laboratory conditions. According to the
results, the strength, linear density, staple length, and other technological
parameters of the cotton fibers were determined, and their impacts on the
quality of the finished yarn were evaluated.
Keywords:
cotton fiber, physical-mechanical properties, spinning-
technological properties, linear density, staple length.
Introduction:
Cotton fiber is one of the strategic products of Uzbekistan's
economy, with its quality significantly affecting various sectors of the national
economy. Particularly, the physical-mechanical and spinning-technological
properties of fibers play a decisive role in producing high-quality yarns.
Improving the technological properties of cotton fibers and identifying optimal
selection varieties are urgent tasks today. New varieties created through
selection works in our country, such as "Namangan 77" and "C 82/95,"
demonstrate high efficiency, opening considerable opportunities for the textile
industry. This study aims to deeply analyze the physical-mechanical and
spinning-technological parameters of cotton fibers from the "Namangan 77" and
"C 82/95" varieties and evaluate the quality indicators of yarn produced from
them.
Methods:
The research was conducted using the "Sherley" small-scale
laboratory spinning machine. The strength, linear density, and staple length of
cotton fibers were tested according to GOST and UzDST standards. During the
research, yarns with a linear density of 18.5 tex (Ne = 32) were produced.
Strength was determined using the formula: where R is strength (cN/tex),
F is the breaking force (cN),
and T is linear density (tex).
Results:
Table 1. Cotton fiber properties.
THEORETICAL ASPECTS IN THE FORMATION OF
PEDAGOGICAL SCIENCES
International scientific-online conference
111
Parameters
"Namangan 77"
"C 82/95"
Linear density, mtex
177
181
Staple length, mm
33.7
33.0
Strength, cN/tex
26.6
25.8
The linear density of the "Namangan 77" cotton variety was determined to
be 177 mtex, which is 4 units lower than "C 82/95." Furthermore, the staple
length of "Namangan 77" was found to be 33.7 mm, longer than "C 82/95." The
strength indicator for "Namangan 77" was also higher (26.6 cN/tex).
Based on experimental results, the unevenness coefficient (U) of yarn
breaking load was calculated using the following formula: where σ is the
standard deviation, and is the mean value.
The calculated unevenness coefficient was 16.2%, indicating the yarn
quality classified as "A."
Conclusion:
The research results demonstrate that the "Namangan 77"
variety exhibits optimal physical-mechanical and spinning-technological
properties suitable for producing high-quality yarn. These results have
significant practical implications for the local textile industry by enabling the
production of superior-quality products.This research confirmed that the
"Namangan 77" selection variety possesses superior technological properties,
making it highly suitable for quality yarn production. These findings provide a
basis for further improvements in cotton fiber deep processing technologies.
References:
1.
Karimov I.A. Uzbekistan at the Threshold of the 21st Century. Moscow,
1997.
2.
UzDST 2322–2011 "Cotton and mixed grey yarn."
3.
UzDST 604–2016 "Cotton fiber."
4.
Resolution of the Cabinet of Ministers of the Republic of Uzbekistan "On
measures for further development of the cotton industry," Tashkent, 2017.
5.
Scientific-Methodological Guide on Cotton Selection and Seed Production,
Tashkent, "Fan" Publishing, 2019.
6.
Soliyev A., Mirzayev M. Cotton Cultivation and Processing Technology.
Tashkent, "Mehnat," 2018.
7.
Yusupov U.S. Fundamentals of Initial Cotton Processing Technology.
Tashkent, "Fan va texnologiya," 2020.
