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A kind of dyeing method of ionic high hydrophilic polyester fiber

A dyeing method and ionic technology, applied in the dyeing field of ionic high hydrophilic polyester fibers, can solve the problems of high dyeing temperature, poor color fastness, fiber strength damage, etc., and achieve good dye depth and uniformity. and good color fastness

Inactive Publication Date: 2016-06-29
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the defects of difficult control of the dyeing process, poor color fastness, high dyeing temperature, and serious damage to fiber strength when conventional modified polyester fibers are dyed, so as to meet the needs of future industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Sorbitol, PEG, SIPE, PTA and EG are used as raw materials, and the molar material ratio of PTA to EG is 1:1.30, and the in-situ polymerization is carried out according to the content of the following raw material components.

[0048] Component content

[0049] Sorbitol 1%

[0050] SIPE4%

[0051] PEG-20003%

[0052] PTA+EG92%

[0053] Tetrabutyl titanate 400ppm (for PTA)

[0054] The polymerization reaction is divided into esterification and polycondensation process. The esterification reaction is under the protection of nitrogen and the pressure is 0.4MPa. The dibasic acid and the dibasic alcohol are esterified in the presence of a catalyst to form a prepolymer. The reaction temperature is 255 °C, react for 3.5h. When the amount of by-products collected reaches 90% of the theoretical value, add sorbitol, PEG, and SIPE to carry out polycondensation reaction. The reaction is first carried out at high temperature and normal pressure. The post-polycondensation was ca...

Embodiment 2

[0057] Raw material: the ionic type highly hydrophilic polyester fiber of embodiment 1, fabric is ionic type highly hydrophilic polyester fiber knitted fabric, and fabric grammage is 220g / m 2 , mesh tissue.

[0058] The following method dyes ionic hydrophilic polyester fabric light red with cationic dyes.

[0059] When dyeing, add water to the ionic highly hydrophilic polyester fabric at a weight ratio of 1:40, add 0.1% of the dissolved cationic dye Scarlet X-GRL, and add 2.0% of leveling agent 1227, RMB Mingfen 8%, acetic acid addition is 0.5%. Start to control the temperature at room temperature. After running for 20 minutes, raise the temperature to 50°C at 2°C / min and run for 30 minutes. Then the temperature was raised to 80°C at 0.5°C / min. After running for 30 minutes, drop the residual liquid at 3°C / min to 60°C, wash it twice with 20°C water, and finally dry the dyed fabric or dry it after functional finishing.

[0060] The addition amount of cationic dye, leveling a...

Embodiment 3

[0063] Sorbitol, PEG, SIPE, PTA and EG are used as raw materials, and the molar material ratio of PTA to EG is 1:1.20, and the in-situ polymerization is carried out according to the content of the following raw material components.

[0064] Component content

[0065] Sorbitol 1.5%

[0066] SIPE5%

[0067] PEG-40005%

[0068] PTA+EG88.5%

[0069] Tetrabutyl titanate 350ppm (for PTA)

[0070] Using the same method as in Example 1, the polyether type highly hydrophilic polyester fiber with a monofilament fineness of 2dtex is obtained, and the fabric is an ionic highly hydrophilic polyester fiber knitted fabric, and the fabric grammage is 220g / m 2 , mesh tissue.

[0071] The following method dyes ionic hydrophilic polyester fabric light blue with disperse dyes.

[0072] When dyeing, add water to the ionic hydrophilic polyester fabric at a bath ratio of 1:30, then add 0.3% of dissolved DianixBlueAC-E and 0.8% of acetic acid. After operating at room temperature for 20 minutes...

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Abstract

The invention discloses a dyeing method of ionic highly hydrophilic polyester fiber. Due to the sulfonic acid group, hydroxyl group, ether bond and benzene ring contained in the ionic highly hydrophilic polyester fiber, the dyeability of the polyester fiber is effectively improved. The invention provides a method for dyeing ionic highly hydrophilic polyester fibers, and provides a dyeing process using cationic dyes or disperse cationic dyes or disperse dyes. Adopting the method of the present invention to dye the ionic highly hydrophilic polyester fiber is beneficial in that: 1, the dyeing is uniform, the cloth surface is clean, the color is bright and the color fastness is excellent; 2, the dyeing temperature is low, and the dyeing process is easy to control, It effectively solves the problem of easy color and flower in traditional dyeing; 3. The dye uptake rate is high when dyeing dark colors, which saves energy and reduces production costs.

Description

technical field [0001] The invention relates to a dyeing method of polyester fibers, in particular to a dyeing method of ionic highly hydrophilic polyester fibers. Background technique [0002] With the development of modern technology, while the output of polyester fiber continues to increase, various improvements have been made in quality and performance. However, ordinary polyester is difficult to dye because of its high molecular chain regularity and no groups with strong affinity with dyes. Although some use dyeing auxiliaries or change the structure of dyes to achieve low-temperature dyeing of polyester, the actual effect achieved is not obvious. Therefore, improving the dyeing performance of polyester fabrics, reducing production costs, and reducing environmental impacts are still difficult issues. [0003] At present, the development and research on the easy-to-dye modification of polyester mainly focus on two aspects: one is physical modification, which mainly inv...

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): D06P1/00D06P1/16D06P1/673D06P1/653D06P1/66D06P3/54D06P3/52C08G63/688C08G63/672C08G63/20C08G63/78
Inventor 俞成丙武小荣胡季华陈赛赛杨丹李秦龙殷雯青戚文迎
Owner SHANGHAI UNIV
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