Modified polyester/cotton blended fabric and dyeing method thereof

A technology for modifying polyester and blended fabrics, applied in dyeing, liquid/gas/vapor textile processing, textiles and papermaking, etc., can solve the problem of polyester fiber with large modulus, lower product grade, easy to pilling, etc. problems, to achieve the effect of high tensile strength, high tensile elongation at break, and high dyeing rate

Active Publication Date: 2012-09-26
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although polyester and cotton blended fabrics are very mature products with a huge variety and output, due to the high modulus and high strength of polyester fibers, such fabrics generally have the disadvantage of easy pilling, and the polyester content is slightly The chemical fiber feeling of high-grade fabrics is relatively strong, which obviously reduces the product grade

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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  • Modified polyester/cotton blended fabric and dyeing method thereof
  • Modified polyester/cotton blended fabric and dyeing method thereof
  • Modified polyester/cotton blended fabric and dyeing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] 1. Fabric

[0134] The fabric is a modified polyester / cotton 30 / 70 blended fabric with a fabric weight of 185g / m 2 , plain weave structure.

[0135] The structural formula of the modified polyester has the following structural units:

[0136]

[0137] where 101 2 <70.

[0138] 2. Dyeing

[0139] 1) carrying out pretreatment to fabric, described pretreatment is alkali+hydrogen peroxide bleaching process commonly used in this field;

[0140] 2) Dip the pretreated fabric into the dyeing bath at 25°C, where the dyeing bath contains 0.8% of Disperse Blue E-4R, 1g / L of glacial acetic acid, and 0.3g / L of leveling agent;

[0141] 3) Then raise the temperature at a rate of 2°C / min until the temperature of the dye bath is 98°C, keep it warm for 20 minutes, drain, and wash with water;

[0142] 4) Add active navy blue L-3G 1.2% (o.w.f), sodium chloride 15g / L, soda ash 5g / L, chelating dispersant 0.5g / L to the dyeing bath, and then heat up at a speed of 0.5°C / min until the dy...

Embodiment 2

[0146] 1. Fabric

[0147] The fabric is a modified polyester / cotton 70 / 30 blended knitted fabric with a fabric weight of 210g / m 2 , the organizational structure is ribbed.

[0148] The structural formula of the modified polyester has the following structural units:

[0149]

[0150] where 101 2 3 <5.

[0151] 2. Dyeing

[0152] 1) Dye the fabric by immersing it in a dyeing bath at 20°C, wherein the dyeing bath contains 1.0% reactive red FN-2BL, 10g / L sodium sulfate, 4g / L soda ash, and 1g / L chelating dispersant;

[0153] 2) Then raise the temperature at a rate of 1.0°C / min until the temperature of the dye bath is 60°C, add 6g / L of soda ash, keep it warm for 30 minutes, drain and wash with water;

[0154] 3) Add Disperse Yellow 4G 1.5% (o.w.f) to the dye bath, adjust the pH value of the dye bath to 5 with glacial acetic acid and sodium acetate, then raise the temperature at a rate of 2 °C / min until the dye bath temperature is 100 °C, and keep it warm for 20 minutes ;

...

Embodiment 3

[0158] 1. Fabric

[0159] The fabric is a modified polyester / cotton 10 / 90 blended knitted fabric with a weight of 220g / m 2 , mesh tissue.

[0160] The structural formula of the modified polyester has the following structural units:

[0161]

[0162]

[0163] where 101 2 3 4 <5.

[0164] 2. Dyeing

[0165] 1) Dye the fabric by immersing it in a dyeing bath at 20°C, wherein the dyeing bath contains 2.3% (o.w.f) of reactive black G, 20g / L of sodium chloride, 5g / L of sodium carbonate, and 1.5g / L of chelating dispersant;

[0166] 2) Then raise the temperature at a speed of 0.8°C / min until the temperature of the dyeing bath is 60°C, add 2g / L of color-fixing alkali, and run for 30min to fix the color;

[0167] 3) After fixing the color, directly add some glacial acetic acid and disperse black HL 0.5% to the dye bath, run for 10 minutes and raise the temperature at a speed of 1.5 °C / min until the dye bath temperature is 100 °C, and keep it warm for 30 minutes;

[0168] 4) Aft...

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Abstract

The invention provides a modified polyester / cotton blended fabric and a dyeing method thereof. The fabric is blended by modified polyester and cotton, wherein the modified polyester is copolymerized by polyester and nylon 6, and has the structural unit as the specification, wherein m1 is more than 1 and less than 160, m2 is more than 1 and less than 70, m3 is more than or equal to 0 and less than20, and m4 is more than or equal to 0 and less than 20; the blended fabric has the performance of normal-temperature normal-pressure dyeing, and soft handfeel and good antipilling performance with the antipilling grade over 3 grades. The invention also relates to a method for dyeing the blended fabric. An acid dye or an acid dye and a disperse dye are used for one-bath dyeing so as to simplify the dyeing process and contribute to energy conservation and emission reduction; and the dyeing temperature is below 100 DEG C to remarkably reduce energy consumption.

Description

technical field [0001] The invention relates to a blended fabric and a dyeing method thereof, in particular to a modified polyester and cotton blended fabric and a dyeing method thereof. The modified polyester and cotton blended fabric is dyed at normal temperature with reactive dyes and disperse dyes. Background technique [0002] The dyeing properties of ordinary polyester fibers and cotton are very different: polyester fibers are generally dyed with disperse dyes at high temperature and high pressure, and the dyeing temperature is above 120°C, and high temperature and high pressure dyeing machines must be used; cotton is generally dyed with reactive dyes, direct dyes, and vat dyes etc. for dyeing, the dyeing temperature is below 100°C, and a normal temperature and pressure dyeing machine is used. The difference in dyeing properties has brought great trouble to the dyeing of polyester and cotton blended fabrics. Cotton is prone to dye hydrolysis when dyed under high temper...

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): D06P3/872D06B3/10D02G3/04
Inventor 廉志军潘菊芳和超伟井连英白玲李鑫
Owner CHINESE TEXTILE ACAD
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