Alkali reducing method of textiles containing CDP fiber
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An alkali reduction and textile technology, applied in textiles and papermaking, fiber processing, fiber types, etc., can solve the problems of CDP fiber strength reduction, affecting the dyeing of cationic dyes, etc., and achieve the effect of soft luster, ample time and soft hand feel
Active Publication Date: 2019-08-23
杭州宙富染整有限公司
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Therefore, at a higher temperature (100-130°C) for tens of minutes of alkali reduction treatment, most of the weight loss (excessive alkali reduction) is CDP fibers, generally accounting for 80-90%, while TEP fibers only account for 10-20%, resulting in a decrease in the strength of CDP fibers in the fabric; and because the dyeing sites (chains containing anionic groups) on CDP fibers are removed in large quantities, it will directly affect the dyeing of cationic dyes
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0052] Embodiment 1: a kind of alkali reduction method of the textile containing CDP fiber, comprises the steps:
[0053] Step 1, according to the amount in Table 1, each component is formed to cooperate with each other to make a padding liquid;
[0054] Step 2, immerse the fabric containing CDP fiber in the padding liquid, roll the fabric containing CDP fiber with a liquid rate of 80% to form a cloth roll, and wrap the plastic film on the outside of the cloth roll, and wrap the cloth roll with The rotation speed in Table 2 rotates around the axis of the cloth roll, and the corresponding time is piled up at the temperature disclosed in Table 2;
[0055] Step 3, remove the plastic film, take out and unwind the stacked cloth rolls, and wash them on the open-width continuous washing machine. The temperature set in the first tank and the second tank, the temperature set in the third tank and the fourth tank , the fifth tank and the sixth tank, the temperature set in the seventh t...
Embodiment 2-8
[0056] Embodiment 2-8: A method for alkali weight reduction of textiles containing CDP fibers. The difference from Example 1 is that the components included in the padding solution and their corresponding weight percentages, and the padding liquid rate , Alkali reduction rate, and alkali utilization rate are shown in Table 1.
[0057] Components included in table 1 embodiment 1-8 padding liquid and their corresponding weight percentages and padding liquid rate, alkali reduction rate, alkali utilization rate (%)
[0058]
[0059] Rotating speed, stacking temperature and time of cloth winding axis line in table 2 embodiment 1-8
[0060]
[0061] The temperature (℃) set by each tank on the open-width continuous washing machine in Table 3 embodiment 1-8
[0062]
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention discloses an alkali reducing method of textiles containing CDP fiber. The method includes: step 1, preparing padding liquid; step 2, immersing the textiles containing the CDP fiber in the padding liquid, rolling the textiles of 80-100% in liquid carrying rate to form a cloth roll, coating the outside of the cloth roll with a flexible hydrophobic layer, and piling in an environment attemperature of 30-40 DEG C for 10-22h; step 3, removing the flexible hydrophobic layer, taking out the cloth roll after being piled for unrolling, washing with water, and drying, wherein the paddingliquid in the step 1 comprises, by weight, 3-9% of NaOH, 1.0-2.0% of alkali reducing penetrant, alkali reducing promoter and the balance of water. Due to a processing method of cold piling reduction and open width washing at a low bath ratio, the method has the advantages of being less prone to causing serious CDP fiber weight loss and capable of making obtained textiles to have good dyeing effect, the obtained textiles are gentle in gloss and soft in hand feel, the objectives of saving water and energy and reducing emission are achieved, and environment protection is facilitated.
Description
technical field [0001] The invention relates to the field of functional finishing methods for textiles, more specifically, it relates to an alkali weight reduction method for textiles containing CDP fibers. Background technique [0002] Polyester fiber (TEP fiber) has the characteristics of high modulus, high strength, good elasticity and shape retention, and is not easy to wrinkle. It is an ideal textile material. [0003] The molecular structure of polyester fiber is: [0004] [0005] However, due to the particularity of its chemical structure, ordinary polyester fibers lack functional groups that can combine with direct dyes, acid dyes, basic (cationic) dyes, etc.; in addition, although polyester has esters that can form hydrogen bonds with disperse dyes However, polyester has high crystallinity and compact structure, and dye molecules are not easy to enter the fiber, which makes polyester dyeing more difficult. As a result, polyester can only be dyed by several kind...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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