ANALYSIS OF MECHANICAL PROPERTIES OF TECHNICAL FABRIC OF NEW COMPOSITION

ABSTRACT

The scientific work presents the results of creating canvas fabrics of a new composition from recycled materials and analyzing their structure. Boiled yarn 35x2 tex, obtained from environmentally friendly raw materials, was used for the base and base of the technical tarpaulin fabric of the new composition of the designed canvas. The quality indicators of technical tarpaulin fabrics with a new composition of the developed tarpaulin cutting practically do not differ from the physical and mechanical indicators of tarpaulin fabrics produced at local textile enterprises.

АННОТАЦИЯ

В научной работе представлены результаты создания техническая ткань (брезентовых) нового состава из вторичного сырья и анализа их структуры. Для основы и уток технической брезентовой ткани нового состава проектируемого ткана использована крушения пряжи 35х2 текс, полученная из экологически чистого сырья. Физико-механических показателей техническая ткань (брезентовых) не отличаются от выпускаемых на местных текстильных предприятиях.

Ключевые слова: полотно, хлопчатобумажная, техническая ткань, разрывная нагрузка, сокращение по уток.

Keywords: linen, cotton, technical fabric, breaking load, weft reduction.

Introduction. In the textile industry of the Republic of Uzbekistan, the need for tarpaulin fabrics is very high. With this in mind, small enterprises and private entrepreneurs are mastering the production of tarpaulin fabrics from cotton fiber in our republic. Cotton fiber tarpaulin has almost the same characteristics as flax fiber tarpaulin.

Literary analysis. The concept of interdisciplinary analysis of digital elements in textile processes is emerging. This new approach can be used to analyze the deformation, strength and durability of textile fabrics [1]. Each thread-based fiber effectively resists the applied load when the tissue is deformed. The stiffness of the fiber can affect the elongation of the yarn [2]. The friction between the threads plays a very important role in absorbing the energy of an external impact, the geometric arrangement of the threads in the fabric and the effect of friction between the threads are very important for the strength of the fabric [3]. With a decrease in the density and thickness of the tissue, its elongation increases and the physical and mechanical properties decrease [4]. The wear resistance of fabrics made of cotton and polyester fibers has been studied [5-6]. It has been established that threads from a mixture of synthetic and cotton fibers are better suited for the production of outerwear fabrics [7]. Much attention is paid to the study of the properties of cotton fiber and the production of finished products from it [8-9]. The mechanical properties of the obtained threads depend on the difference in the length and diameter of the fibers. As the fiber diameter increases along the length, the stress factor decreases [10].

Method and materials. Boiled yarn 35x2 tex, obtained from environmentally friendly raw materials, was used for the base and base of the technical tarpaulin fabric of the new composition of the designed canvas. For the production of fabric, a small loom of the STB model was used. The quality indicators of a technical tarpaulin with a new composition of the developed canvas.The physical and mechanical properties of the fabric were analyzed on a UniStretch 500 machine according to standard methods in the laboratory conditions of the Department of Textile Machinery and Equipment, LLC Industrial Technology, Karakalpak State University named after Berdak.

The physical and mechanical properties of the fabric obtained on the UniStretch 500 machine are presented in Table 1. Graphs of fabric breakage in the warp and weft directions taken on the UniStretch 500 machine are presented in Figures 1 and 2.

Table 1.

Physico-mechanical parameters of the fabric in the directions of the body and warp, obtained on the UniStretch 500 machine

Analysis of results. As can be seen in Fig. 1, the tensile strength of the fabric was 988.3 N, and in Fig. 2, it was 488.6 N. Due to the high density of the fabric in the body, its tensile strength in this direction is higher than the tensile strength in the warp direction.

In Figure 1, the elongation at break in the body was 34.7%, in Figure 2, the elongation at break in the beam was 14.4%. The reason for this is that the amount of tissue shrinkage is high.

Table 2.

The main indicators of the tissue

As can be seen from Table 2, the textile parameters of the developed new composition of the shearing cloth tarpaulin correspond to the actual textile indicators. In particular, the calculated reduction rate of body threads is 18.4%, and the actual one is 16.5%. The calculated value of yarn shrinkage was 4.2%, and the actual value was 4.5%. The calculated and actual surface density of the fabric was 325 grams.

Conclusion. The estimated rate of shortening of the tarpaulin threads is 18.4%, the actual one is 16.5%. The calculated value of yarn shrinkage was 4.2%, and the actual value was 4.5%. The tensile strength of the fabric in the direction of the warp threads was 988.3 N, and in the direction of the warp threads - 488.6 N. Due to the high density of the fabric in the direction of the body, its tensile strength in this direction is higher than in the direction of the warp threads. It can be concluded that the parameters of the designed fabric correspond to the real ones.

References:

1. Guangming Zhou, Xuekun Sun, Youqi Wang Multi-chain digital element analysis in textile mechanics Composites Science and Technology Issue 2, February 2004
2. Gaurav Nilakantan, Travis A.Bogetti, John W.Gillespie “A deterministic finite element analysis of the effects of projectile characteristics on the impact response of fully clamped flexible woven fabrics” Composite Structures Volume 95, January 2013
3. Gaurav Nilakantan, MichaelKeefe, “On the finite element analysis of woven fabric impact using multiscale techniques” Journal of Solids and Structures, August 2010
4. Rimantas Barauskasa, AušraAbraitienė “Computational analysis of impact of a bullet against the multilayer fabrics in LS-DYNA “International Journal of Impact Engineering Volume 34, Issue 7, July 2007, Pages 1286-1305
5. Kozhametov, B. T. U., Faizullaev, Sh. R., Rakhmatullinov F. F. (2022). Analysis of yarn properties from a mixture of cotton and chemical fibers. Universum: technical sciences, (5-6 (98)), 13-18.
6. Rajapov, O. O., Kojametov, B. T., & Kolondorov, M. J. (2023). Effect of thread on yarn quality of cotton/polyester 80/20% blend yarn. International Journal of Advance Scientific Research, 3(02), 24-32.
7. Shavkat, F., Shoira, M., Allambergen, U., & Batir, K. (2023). Analysis of the quality performance of cotton/polyester mixed yarn made by ring spinning method. Universum: технические науки, (2-6 (107)), 23-28.
8. Miyras Shamuratov,. Jaxongir Gafurov,. Kabul Gafurov,. mesh drum for scutching machines,  forming a uniform fibrous layer universum:  технические науки № 10 (103) октябрь, 2022 г. DOI - 10.32743/UniTech.2022.103.10.14342
9. Baxtiyar, P., Abdumalik, P., Jurabek, M., & Batir, K. (2022). Investigation of mechanical damage of cotton fiber in the process of pressing and baling. Universum: технические науки, (3-7 (96)), 19-23
10. Турманов, И., Алланиязов, Г., & Кожаметов, Б. (2020). Исследование технологических свойств волокон хлопка, отобранных из разных зон семени. Проблемы науки, (5 (53)), 16-18.