In order to analyze the effects of the three process parameters of super-feeding, air pressure and deformation speed on the instability alone, we used 70 (7.77 tex)/72 polyester filaments to prepare 19 based on the three-layer BoxBehnken design. The code values ​​for the deformed yarn samples are shown in Table 1 for varying degrees of process parameters. In order to analyze the effects of the three process parameters of super-feeding, air pressure and deformation speed on the instability alone, we used 70 (7.77 tex)/72 polyester filaments to prepare 19 based on the three-layer BoxBehnken design. The code values ​​for the deformed yarn samples are shown in Table 1 for varying degrees of process parameters.
Table 1 Deformation parameters and the degree of influence of yarn instability The serial number of super-feeding gas deformation speed instability, %c in this design, the seven center points are considered to be caused by abnormal factors xi = (super feed %-400) The /100 sample is constructed irregularly according to the random number table. The production procedure of the sample is randomized by the deformation parameters 14, 15, 13 in Table 1. The reason is caused by effective statistical analysis and reasoning.
The unstable value of the textured yarn is measured by a DuPont dynamic balance tester. The test instrument is shown on the top of the vertical plate consisting of a vertical plate with a clamping plate on it, and the air jet deformed yarn. Hanging up from the clamping plate one meter below the clamping plate is a tracing notch, below the notch is the centimeter dial. The weight hammer hook is used to suspend the load below the sample of 0.01gf/den (0. /tex) load, and mark 1 m of the tensioned yarn, then suspend the load of 0.5gf/den (4. 4cN/tex) under the sample and keep 30 秧 and then remove the load, measure the sample after 30 seconds The permanent elongation value, measured by the one meter mark, is determined by the percentage of permanent elongation. Each sample is tested 10 times. The average value is the instability. Table 1 shows the unstable value of the deformed yarn. With the quadratic equation, we can obtain information about the single linear effect of the process parameter interaction and the single quadratic effect.
The overall relationship between Y (the instability of the textured yarn) and the different parameters appearing in code: the factor of influence factor, ht = secondary influence coefficient, h7 = interaction coefficient. In order to estimate the coefficient of the overall relationship, that is, the relationship between the response Y and the different parameters, we follow the relationship between the deformation parameters and the instability of the regression program selected earlier. The relationship between the deformation parameters and the instability is shown as follows: Here I is unstable, X1X2X3 In turn, the values ​​of overfeed, air pressure, and deformation speed code. The standard error of R2 and the above formula evaluation is 0.917 and 0.422, respectively. The reaction surface should consider two variables at a time, so that other variables are kept at the center point. The result of super-feeding is high, and the instability of the yarn is also added. One point is consistent with the aforementioned increase in deformation speed, the tightness of the yarn core is expected to decrease, and as a result, the internal friction of the filament is lowered, resulting in an increase in yarn instability, which has been discussed with the increase of deformation speed and instability. Increasing the super-feeding standard and the deformation speed increase, the interaction will exist between these parameters, affecting the unstable yarn of the deformed yarn. When these deformation parameters are increased, the yarn instability is quite high. The increase in air pressure causes a relatively small change in yarn instability. Instability is initially additive, which may be due to a decrease in the number of parallel filaments in the core which results in high yarn instability. However, when the gas pressure exceeds 900 kPa, the yarn instability decreases to a certain extent as the gas pressure increases. This is due to the formation of a tight core at higher pressures, which makes the structure more complete.
At lower deformation speeds, as the air pressure increases, the instability decreases, which may be caused by the high tightness of the filaments in the core. This is more important than the filament alignment error at high deformation speeds. Under the nozzle, the residence time of the filaments in the nozzle is reduced, and the air pressure which affects the tightness of the yarn core is increased due to the inaccurate alignment of the filaments in the yarn core, resulting in instability of the conclusion air. The instability of the jet-deformed yarn is affected by overfeeding, air pressure and deformation speed. We have established an overall relationship between the instability and the deformation parameters in the form of code. We find that the effects of superfeeding and deformation speed and the interaction of air pressure and deformation speed on instability are far-reaching. In the case of faster deformation, the change of instability increases with the increase of overfeed. With the increase of air pressure, the yarn instability decreases at a low deformation speed, while the high-deformation speed is increased. The translation is translated from the American Textile Research Journal 2001 wool and Lyocell blend dyeing method Lyocell and wool blend. When dyeing by exhaustion dyeing, the Lyocell component can be directly or reactively dyed, and the wool component can be dyed with a direct dye in a low-temperature, short-time leveling dye with a metal complex dye or a reactive dye Lyocell, and the wet fastness is also good. The dyeing of Lyocell and wool in the one-bath dyeing at 95CX for 30 minutes does not cause the risk of fiber damage with direct dyes and wool dyes. It is the best dyeing condition for obtaining dyeing concentration, leveling color, and wet fastness. When dyeing with a reactive dye, it is necessary to use a reactive dye having a high reactivity. When dyed with some bifunctional or polyfunctional reactive dyes, Lyocell fibers blended with wool have a fibrillation degree comparable to that of Lyocell and wool blends dyed with low reactive dyes of monofunctional reactive dyes, dimensional stability and wetness. Depending on the dye used and the dyeing conditions, Lyocell can be dyed with vat dyes, just like other cellulose fibers. However, when dyed with vat dyes, Lyocell blended with wool must reduce the dye bath alkaline if it is not damaged. The sodium bicarbonate is reduced and dyed at pH 7.0. The dyeing effect of the wool component is good, but the Lyocell component is not dyed unevenly. It can only be dyed in light color, such as ultrasonic dyeing test. According to the test results, the dyeing of Lyocell component is obtained. Concentration and wash fastness can be increased to the same level as standard dyes. Excerpted from the German "Melian Textile Journal" http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Table 1 Deformation parameters and the degree of influence of yarn instability The serial number of super-feeding gas deformation speed instability, %c in this design, the seven center points are considered to be caused by abnormal factors xi = (super feed %-400) The /100 sample is constructed irregularly according to the random number table. The production procedure of the sample is randomized by the deformation parameters 14, 15, 13 in Table 1. The reason is caused by effective statistical analysis and reasoning.
The unstable value of the textured yarn is measured by a DuPont dynamic balance tester. The test instrument is shown on the top of the vertical plate consisting of a vertical plate with a clamping plate on it, and the air jet deformed yarn. Hanging up from the clamping plate one meter below the clamping plate is a tracing notch, below the notch is the centimeter dial. The weight hammer hook is used to suspend the load below the sample of 0.01gf/den (0. /tex) load, and mark 1 m of the tensioned yarn, then suspend the load of 0.5gf/den (4. 4cN/tex) under the sample and keep 30 秧 and then remove the load, measure the sample after 30 seconds The permanent elongation value, measured by the one meter mark, is determined by the percentage of permanent elongation. Each sample is tested 10 times. The average value is the instability. Table 1 shows the unstable value of the deformed yarn. With the quadratic equation, we can obtain information about the single linear effect of the process parameter interaction and the single quadratic effect.
The overall relationship between Y (the instability of the textured yarn) and the different parameters appearing in code: the factor of influence factor, ht = secondary influence coefficient, h7 = interaction coefficient. In order to estimate the coefficient of the overall relationship, that is, the relationship between the response Y and the different parameters, we follow the relationship between the deformation parameters and the instability of the regression program selected earlier. The relationship between the deformation parameters and the instability is shown as follows: Here I is unstable, X1X2X3 In turn, the values ​​of overfeed, air pressure, and deformation speed code. The standard error of R2 and the above formula evaluation is 0.917 and 0.422, respectively. The reaction surface should consider two variables at a time, so that other variables are kept at the center point. The result of super-feeding is high, and the instability of the yarn is also added. One point is consistent with the aforementioned increase in deformation speed, the tightness of the yarn core is expected to decrease, and as a result, the internal friction of the filament is lowered, resulting in an increase in yarn instability, which has been discussed with the increase of deformation speed and instability. Increasing the super-feeding standard and the deformation speed increase, the interaction will exist between these parameters, affecting the unstable yarn of the deformed yarn. When these deformation parameters are increased, the yarn instability is quite high. The increase in air pressure causes a relatively small change in yarn instability. Instability is initially additive, which may be due to a decrease in the number of parallel filaments in the core which results in high yarn instability. However, when the gas pressure exceeds 900 kPa, the yarn instability decreases to a certain extent as the gas pressure increases. This is due to the formation of a tight core at higher pressures, which makes the structure more complete.
At lower deformation speeds, as the air pressure increases, the instability decreases, which may be caused by the high tightness of the filaments in the core. This is more important than the filament alignment error at high deformation speeds. Under the nozzle, the residence time of the filaments in the nozzle is reduced, and the air pressure which affects the tightness of the yarn core is increased due to the inaccurate alignment of the filaments in the yarn core, resulting in instability of the conclusion air. The instability of the jet-deformed yarn is affected by overfeeding, air pressure and deformation speed. We have established an overall relationship between the instability and the deformation parameters in the form of code. We find that the effects of superfeeding and deformation speed and the interaction of air pressure and deformation speed on instability are far-reaching. In the case of faster deformation, the change of instability increases with the increase of overfeed. With the increase of air pressure, the yarn instability decreases at a low deformation speed, while the high-deformation speed is increased. The translation is translated from the American Textile Research Journal 2001 wool and Lyocell blend dyeing method Lyocell and wool blend. When dyeing by exhaustion dyeing, the Lyocell component can be directly or reactively dyed, and the wool component can be dyed with a direct dye in a low-temperature, short-time leveling dye with a metal complex dye or a reactive dye Lyocell, and the wet fastness is also good. The dyeing of Lyocell and wool in the one-bath dyeing at 95CX for 30 minutes does not cause the risk of fiber damage with direct dyes and wool dyes. It is the best dyeing condition for obtaining dyeing concentration, leveling color, and wet fastness. When dyeing with a reactive dye, it is necessary to use a reactive dye having a high reactivity. When dyed with some bifunctional or polyfunctional reactive dyes, Lyocell fibers blended with wool have a fibrillation degree comparable to that of Lyocell and wool blends dyed with low reactive dyes of monofunctional reactive dyes, dimensional stability and wetness. Depending on the dye used and the dyeing conditions, Lyocell can be dyed with vat dyes, just like other cellulose fibers. However, when dyed with vat dyes, Lyocell blended with wool must reduce the dye bath alkaline if it is not damaged. The sodium bicarbonate is reduced and dyed at pH 7.0. The dyeing effect of the wool component is good, but the Lyocell component is not dyed unevenly. It can only be dyed in light color, such as ultrasonic dyeing test. According to the test results, the dyeing of Lyocell component is obtained. Concentration and wash fastness can be increased to the same level as standard dyes. Excerpted from the German "Melian Textile Journal" http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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