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One-bath dyeing method of trilobal dyeable modified polyester/cotton blended fabric with high cationic content

A technology for modifying polyester and dyeing methods, applied in dyeing methods, textiles and papermaking, etc., can solve the problems of high price, unfavorable health and environmental protection of anti-precipitation additives, and few varieties of cationic dyes.

Active Publication Date: 2013-12-25
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few varieties of neutral color-fixing reactive dyes, and the anti-sedimentation additives added are not good for health and environmental protection
There are also disperse cationic dyes or third-generation migratory (M-type) cationic dyes that are pre-blocked with anionic active agents to help solve the problem. However, at present, there are few types of cationic dyes with special functions and the price is expensive.

Method used

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  • One-bath dyeing method of trilobal dyeable modified polyester/cotton blended fabric with high cationic content
  • One-bath dyeing method of trilobal dyeable modified polyester/cotton blended fabric with high cationic content
  • One-bath dyeing method of trilobal dyeable modified polyester/cotton blended fabric with high cationic content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] After pretreatment, the modified polyester / cotton blended knitted jersey (80 / 20) was immersed in cationic red X-GRL1.5% (o.w.f.), sodium acetate 0.3% (o.w.f.) and acetic acid 0.35% (o.w.f.) to adjust the pH at 4 ~5, in a cationic dyeing bath with a bath ratio of 1:15. According to the dyeing temperature process curve ( figure 2 ) for cationic dyeing, and then add reactive red DSW 4.5% (o.w.f.) for cotton part dyeing. Determination of apparent depth K / S value, unevenness S and color fastness, the results are shown in Table 1.

[0081] Table 1 dyeing performance test results

[0082]

Embodiment 2

[0084] Modified polyester / cotton / spandex blended knitted jersey (65 / 35) is immersed in cationic red X-GRL1.5% (o.w.f.), sodium acetate 0.3% (o.w.f.) and acetic acid 0.35% (o.w.f.) to adjust the pH at 4-5 , in a cationic dyeing bath with a bath ratio of 1:15. According to the dyeing temperature process curve ( figure 2 ) for cationic dyeing, and then add reactive red DSW4% (o.w.f.) for cotton part dyeing. Determination of apparent depth K / S value, unevenness S and color fastness, the results are shown in Table 2.

[0085] Table 2 dyeing performance test results

[0086]

Embodiment 3

[0088] Modified polyester / cotton / spandex blended knitted jersey (35 / 65) was immersed in cationic red X-GRL1% (o.w.f.), sodium acetate 0.3% (o.w.f.) and acetic acid 0.35% (o.w.f.) to adjust the pH at 4-5, bath Ratio of 1:15 in the cationic dye bath. According to the dyeing temperature process curve ( figure 2 ) for cationic dyeing, and then add reactive red DSW4.5% (o.w.f.) for cotton part dyeing. Determination of apparent depth K / S value, unevenness S and color fastness, the results are shown in Table 3.

[0089] Table 3 dyeing performance test results

[0090]

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Abstract

The invention relates to a one-bath dyeing method of trilobal dyeable modified polyester / cotton blended fabric with the high cationic content. The method comprises the following steps: (1) immersing the modified polyester / cotton blended fabric into a cationic dye bath, then heating to 70-75 DEG C, carrying out heat preservation for 10-15 minutes, then heating to 95-100 DEG C, carrying out heat preservation and dyeing for 50-70 minutes, and then cooling to 25-30 DEG C within 25-35 minutes; (2) adding an activated dye, and then adding anhydrous sodium sulphate and alkali, heating to 58-62 DEG C, adding the residual alkali, rapidly cooling to room temperature after the heat preservation and fixation are finished, washing, neutrally soaping, washing and drying. The one-bath dyeing method of the modified polyester / cotton blended fabric is creatively adopted; the one-bath dyeing method is simple and feasible to operate; a large quantity of energy sources and manpower resources are saved; no special dyeing assistant or anti-settle agent is added in the dyeing process. Therefore, the method is healthy and has the environment-friendly effect; the leveling property and the color fastness meet the requirements.

Description

technical field [0001] The invention belongs to the field of dyeing and finishing processing of polyester / cotton blended fabrics, in particular to a one-bath dyeing method of trilobal high-content cationic dyeable modified polyester / cotton blended fabrics. Background technique [0002] Polyester fiber has high breaking strength and elastic modulus, good heat resistance and light resistance, good washability and excellent resistance to organic solvents, so it has become the fastest growing, highest output, and most widely used synthetic fiber. One of the widest varieties. However, its products still have shortcomings, mainly low hygroscopicity and serious static electricity. In terms of dyeing performance, due to the tight molecular structure of conventional polyester fibers, high crystallinity and orientation, and the lack of polar groups, it is very difficult for dyes to penetrate into the fibers. The dyeing often requires disperse dyes at high temperatures (120 ° C ~ 140 ...

Claims

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Application Information

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IPC IPC(8): D06P1/00D06P1/38D06P1/673D06P1/653D06P3/87D06P5/02D06P5/08
Inventor 蔡再生李晓燕沈为俞建勇
Owner DONGHUA UNIV
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