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A method for crystal modification of cotton yarn/flax yarn and weaving interwoven fabric

A technology for crystal-modified and interwoven fabrics, which is applied in the field of interwoven fabrics formed by interweaving crystal-modified cotton yarns and crystal-modified flax yarns, and can solve the problem of poor linen yarn effects, difficult removal, yarn melting, etc. problems, to achieve the effect of improving bulkiness and softness, improving dimensional stability, and reducing crystallinity

Inactive Publication Date: 2015-10-21
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid ammonia modification has similar effects to alkali mercerizing treatment, such as the disappearance of natural curls, rounded cross section, and smaller inner cavity. Uniformity, the main difference is that the effect of liquid ammonia modification is better than that of alkali mercerizing modification
Domestically, liquid ammonia is used as the modifying medium, and the conventional method of boosting pressure in a closed container—holding pressure—recycling the modified medium in the yarn has a certain effect on cotton yarn, but the effect on flax yarn is poor, and this method is only Once modified, the swelling is not complete, the crystallinity is not significantly reduced, and the dyeing performance is not significantly improved
Like this, the interwoven fabric that weaves also has above shortcoming

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for crystal modification of cotton yarn / flax yarn and weaving interwoven fabric, firstly, 5 modified cotton yarns are placed in an airtight container, filled with liquid ammonia, pressurized at a rate of k 1Increase the pressure at a constant speed of 0.1MPa / min to a modified pressure of 0.5Mpa, hold the pressure for 1min, and release it to 0.005Mpa at a depressurization rate of 0.3MPa / s within 5 seconds, and then use heating and vacuuming to evaporate in parallel The method removes the modifying medium to obtain crystal-modified cotton yarn. Then put the modified 5 flax yarns in an airtight container, fill it with liquid ammonia, and boost the pressure in a linear boosting manner, the boosting rate is k 2 Satisfy the relation Initial boost rate k 0 0.5MPa / min, to the modified pressure of 1.2Mpa, keep the pressure for 1min, and then release it to 0.0012Mpa within 5 seconds at a depressurization rate of 0.5MPa / s, and then use the evaporation method of heating...

Embodiment 2

[0026] A method for crystal modification of cotton yarn / flax yarn and weaving interwoven fabric. First, 32 modified cotton yarns are placed in an airtight container, filled with liquid ammonia, and pressurized at a rate of k 1 Increase the pressure at a constant speed of 0.2MPa / min to the modified pressure of 1Mpa, hold the pressure for 1min, and release it to 0.001Mpa at a depressurization rate of 0.3MPa / s within 5 seconds, and then use the evaporation method of heating and vacuuming in parallel The modification medium is removed to obtain the crystal-modified cotton yarn. Then the modified 21 flax yarns are placed in a closed container, filled with liquid ammonia, and boosted in a linear boosting manner, the boosting rate is k 2 Satisfy the relation Initial boost rate k 0 0.5MPa / min, to the modified pressure of 1.5Mpa, keep the pressure for 5min, and then release it to 0.0015Mpa within 5 seconds at a decompression rate of 1MPa / s, and then use the evaporation method of hea...

Embodiment 3

[0028] A method for crystal modification of cotton yarn / flax yarn and weaving interwoven fabric. First, 32 modified cotton yarns are placed in an airtight container, filled with liquid ammonia, and pressurized at a rate of k 1 Increase the pressure at a constant speed of 0.5MPa / min to the modified pressure of 1Mpa, hold the pressure for 10min, and release it to 0.001Mpa at a depressurization rate of 0.5MPa / s within 4 seconds, and then use the evaporation method of heating and vacuuming in parallel The modification medium is removed to obtain the crystal-modified cotton yarn. Then the modified 36 flax yarns are placed in an airtight container, filled with liquid ammonia, and boosted in a linear boosting manner, with a boosting rate of k 2 Satisfy the relation Initial boost rate k 0 0.8MPa / min, to the modified pressure of 2Mpa, keep the pressure for 10min, and then release it to 0.002Mpa within 3 seconds at a depressurization rate of 1MPa / s, and then use the parallel evaporat...

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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PUM

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Abstract

The invention relates to a method for crystal modification of cotton yarn / flax yarn and weaving interwoven fabric. The modified cotton yarn and flax yarn are respectively placed in different airtight containers, filled with a modified medium, and the pressure is increased. to the modified pressure, then release the pressure instantaneously, and remove the modifying medium to obtain crystal-modified cotton yarn and crystal-modified linen yarn respectively, and then pass the crystal-modified cotton yarn and crystal-modified linen yarn through Interwoven to form an interwoven fabric. The present invention adopts the advantages of the above technical solutions as follows: 1. By changing the lattice structure to achieve the purpose of modification, the modified yarn overcomes its original defects and improves the dimensional stability, softness and dyeing performance of the yarn wait. 2. The method of instantaneous pressure release is adopted to maximize the expansion of the modified yarn, which greatly improves the bulkiness and softness of the yarn. 3. The interwoven fabric woven by crystal-modified cotton yarn and crystal-modified flax yarn has enlarged pores, reduced crystallinity, and soft fabric, which greatly improves the spinning, weaving and dyeing properties of the fabric.

Description

technical field [0001] The invention relates to a method for crystal modification of cotton yarn / flax yarn and weaving interwoven fabric, specifically a method obtained by pressurizing the modified medium to the modified pressure and holding the pressure for a period of time and releasing the pressure instantaneously Crystal-modified cotton yarn and crystal-modified flax yarn, and a method for interweaving crystal-modified cotton yarn and crystal-modified flax yarn to form an interwoven fabric. Background technique [0002] Cotton yarn / linen yarn interwoven fabric is formed by interweaving cotton yarn and linen yarn in a certain way. The interweaving makes cotton yarn and linen yarn form complementary advantages. The woven fabric has good hygroscopicity, air permeability, antibacterial However, there are still disadvantages such as difficulty in spinning, weaving and dyeing. [0003] In order to change the above status quo, there are many modification methods, such as physi...

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06B5/16D06B15/00D03D15/00D03D13/00D06M11/61D06M101/06D03D15/217D03D15/50
Inventor 孙以泽孟婥黄双孙志军
Owner DONGHUA UNIV