CC BY
13
Section 12. Technical sciences
DOI: http://dx.doi.org/10.20534/ESR-17-1.2-236-237
Sobirova Ziyoda Azimjonovna, Research associate-the competitor, Tashkent Institute of Textile and Light Industry, E-mail: barno.professorov@mail.ru
Geometric characteristics and change bulk form part of the product impregnated with the polymer composition based on collagen
Abstract: In the article the results of research conducted geometric characteristics and changes in the form of bulk pieces of garments made of natural fur, treated with a polymer composition based on collagen.
Keywords: deformation, forming, is fastening forms of physical and mechanical properties, dimensional stability, and the package of clothing details.
Among the production of light industry products occupy a significant place garments leather and fur. Improving the production of garments technology associated with the tasks aimed at expanding the product portfolio, improving its quality, rational use of the main and auxiliary materials, as well as reducing the share of manual labor in the industry. Results of the solution of this problem should be reflected in the preparation of high quality apparel products, the production of which is not accompanied by an increase in the complexity of its manufacturing process
[1-3].
One of the indicators of quality of products is the preservation of an attached volume form. To study the dimensional stability against external force and a component of the mechanism deformation (shape change) may be sufficient to examine the physi-comechanical and technological properties of the package with
the polymer composition. To carry out experimental research in this paper method was used, proposed in [4].
For bulk samples of fur from a polymer composition selected by the following factors: the radius of the spherical segment — R; the height of the spherical segment — H; Load direction on the deformation — R.
Included factors for the bulk samples with fur polymer composition were coded as follows: X1 — radius of the spherical segment m; X — the height of the spherical segment, m; X3 — load aimed at deformation N. The values of incoming factors are given in table. 1. X3 — load aimed at deformation was adopted in a number of outside factors on the basis of scientific research. As a result of research experiments, it was found that the load is aimed at the deformation is of great importance when selecting the geometric dimensions of bulk samples of fur with the polymer composition [5].
Table 1. - The value of incoming factors
Title factor coding sign The real value of the factor The gap changes
-1 0 +1
The radius of the spherical segment, m X, 0,75 0,78 0,81 0,03
The height of this spherical segment, m X2 0,50 0,52 0,54 0,02
Load aimed at deformation, N X3 0,65 0,70 0,75 0,05
Factor X2 - is the height of the spherical segment, where the Overlooking factor, ie the experimental results and the disper-
lower value of the geometric dimensions of selected bulk samples in sion of cleaning efficiency are given in table 2. the range of 0.50 m, and the highest value is 0.54 m.
Table 2. - Experimental results and dispersion exiting factor
№ XI X2 X3 yi y2 y3 y S 2{Y}
1 - - - 79,4 79,9 80,2 79,8 0,165
2 + - - 77 77,5 76,25 76,9 0,39625
3 - + - 78,3 77,1 77,5 77,6 0,75
4 + + - 76,5 77 76,7 76,7 0,13
5 - - + 84,4 83,9 84,1 84,13 0,06335
6 + - + 83,4 82,9 83,6 83,3 0,26
7 - + + 77,8 78,2 77,4 77,8 0,16
8 + + + 85,4 85 84,9 85,1 0,07
Hroro 641,33 1,9946
Now we form the regression equation and calculate the regres- After performing calculations preobraetaet regression equation
sion coefficients. as follows
The regression equation Y = 80,16 + 2,82x1 + 1,25x2 + 2,02x3 -
Y = b0 + bx + b2x2 + b3x3 + bl2xlx2 + -o,67xix2 + 0,4xx3 - 0,27x2x3 - 1,66xlx2x3
+b 13X^X3 + b^3x 2X3 + b^x x 2X3
Geometric characteristics and change bulk form part of the product impregnated with the polymer composition based on collagen
With the help of the payment value of the Student test verified the significance of the regression coefficient.
For certain regression coefficients calculated the estimated value of the Student test.
Based on the calculations revealed that values more than their tabulated values and are therefore considered relevant and will be used in further calculations. So as a result of calculations it was found
that the coefficients b0, b1, b2, b3 ,b12, b13, b23 and b123 are considered to be significant, and further calculations were carried out based on these factors. This regression equation is as follows Y = 61,4 + 2,79Xj + 1,116x2 + 1,8x3 -0,7x,x2 + 0,43x,x3 -
-0,14x2x3 - 1,61x1x2x3 The resulting regression equation was tested for adequacy by using Fisher's exact test are given in table 3.
Table 3. - Values of emerging factors obtained by calculating the regression equation
№ Y Y* Y - Y 1 ±Ri (Y, - Y; )2
1 84,8 82,1 2,7 7,29
2 76,9 75,64 1,26 1,588
3 77,6 76,642 0,958 0,918
4 76,7 75,418 1,282 1,644
5 84,13 82,942 1,188 1,411
6 83,6 81,99 1,61 2,59
7 87,4 86,638 0,762 0,581
8 84,9 83,75 1,15 1,323
in total 17,345
The regression coefficients derived from the regression equation are important in characterizing emerging factors. Where, for large values of the regression coefficient before entering factors will greatly influence the factor of leaving this factor. Conversely, if a lower value of the coefficient of influence will also be minimal. Signs before factors indicate their influence. Where in sign (+) indicates a positive effect on exiting factor, while (-) negative effect on the contrary.
The figure shows a segment of the radius of the relationship with the stability of the form. The first line on the graph represents the minimum value ofx2 and x3, and the second line of grated intermediate values, and the fourth line of the maximum values.
Analysis of experimental studies have shown, with an increase from 0.75 to 0.81, ie at the minimum values ofx2 and x3 x2 = 0.50 m, 0.65 x 3 = H from 84.1% to 77.68%, the maximum x2 = x3 = 0,54m and 0.75 H from 88.78% to 85.79%, with intermediate values from 81.18% to 79.16%, from 83.86% to 81.83%, a decrease shape stability.
When the height of the segment increased from 0.50 m to 0.54 m, with the minimum values of the effectiveness of cleaning x1 and x3, that is, when x1 = 0.75 m and 0.65 N will be from 79.77% to 77.61% at x1 and x3 = 0.77 = 0.73 H from 80.50% to 80.51 at 0,78m x1 = x3 = 0.70 H from 81.64% to 82.95, when x1 = =0, 81m and x3 = 0.75 H from 83.23% to 84.99 visible changes.
7000 3000 3000 10000 11000 12000 13000 X;. Kr/C
where, 1 -X2 = 0,50m, X3 = 6,5H; 2 -X2 = 0,52 m, X3 = 0,70H; 3 -X2 = 0,52 m, X3 = 0,72H; 4 -X2 = 0,54M, X3 =0,75H Figure. Schedule communication form stability and segment radius
In this segment by increasing the radius of the following changes are observed from 6.5 N to 7.5 N at x1 = 0.75 m and x2 = 0.50 m from 79.77% to 84.18%, with x1 = 0.77 m and x2 = 0.51 m from 78.30% to 84.99% with 0.78 x1 = m and x2 = 0.52 m from 77.27% to 85.15% and x1 = 0.81 x2 = m and 0.54 m from 76.66% to 84.99%.
Analysis of the above graphic relationships resulting regression equations analytical solutions based on experiments conducted pol-nofaktornyh allows you to choose the rational conditions of formation of the package and the geometric parameters of the product to obtain a product with high resistance obemnyh samples of fur from the polymer composition.
References:
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2. Cherepenko A. P. The development of methods of designing highly effective processes ofwet-heat processing of garments. Author. Dis. .Doctor. tehn. Science in the form of a scientific paper - M.: MTILP. - 1992. - 74 p.
3. Tashpulatov S.Sh. The development of high technology resource-saving manufacture of garments. Author. Dis. .Doctor. tehn. Sciences. - Tashkent: TITLI. - 2008. - 38 p.
4. Tashpulatov S.Sh. Using chemically active working tools - compositions for fixing the shape details of clothing//Chemical Technology, - Volume 5: Proceedings - Moscow, - 2007. - 133 p.
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