CN102115989B

CN102115989B - Rapidly-dyeing process for cellulose loose fiber

Info

Publication number: CN102115989B
Application number: CN 200910247725
Authority: CN
Inventors: 蒋永根; 王小军
Original assignee: ZHEJIANG HUAFU MELANGE YARN CO Ltd
Current assignee: ZHEJIANG HUAFU MELANGE YARN CO Ltd
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2013-07-10
Anticipated expiration: 2029-12-30
Also published as: CN102115989A

Abstract

The invention relates to a rapidly-dyeing method for cellulose loose fiber. Color fixation pre-treatment is firstly conducted on the cellulose loose fiber by using reactive dye color fixing agent, and then dyeing is completed in a salt-free and alkali-free environment. The method disclosed by the invention has the advantages that the dye-uptake rate is high, angled water is approximately colorless after the dyeing is completed, enzyme soaping agents have no need to be added for neutralization during soaping, COD (chemical oxygen demand) of dying and soaping wastewater can be reduced by about 70 percent in the whole dyeing process, the chromaticity is greatly reduced, and the dyeing process is very environmentally-friendly; meanwhile, pre-treatment refining agents are not added during the pre-treatment, so that the characteristics and the hand feeling of natural fiber are reserved, the fluffy feel is better, and the spinnability of subsequent processing is guaranteed; and furthermore, the addition of salt and alkali in a dyeing link is left out, the labor intensity is reduced, environmental pollution caused by the residual of inorganic salt is reduced, the dyeing process is simplified, the dyeing time is reduced, the problems of low dye utilization rate, environmental pollution, and the like of a traditional process are basically solved, and more environmentally-friendly and greener products are provided for customers.

Description

The cellulose fibre rapid dyeing process

Technical field

The present invention relates to loose stock dyeing technology, be specifically related to a kind of environmental protection colouring method of first fixation poststaining of cellulose fibre, refer specifically to the colouring processing method of the low COD of cellulose fibre reactive dye salt-free alkali-free, low colourity.

Background technology

Use a large amount of glauber salt, soda ash in the traditional fibre cellulose fiber dyeing course, REACTIVE DYES, dye-uptake is not high, the a large amount of dyeing waste waters that form can not be solved by simple materialization and biochemical method, cause serious water environment pollution and soil property salinization of soil, the invention solves and use a large amount of saline and alkaline problems in the dyeing course, dyeing course does not need to add saline and alkaline, has improved dye exhausting rate; The present invention does not destroy cellulose bulk fibre structure, has kept the natural accompaniment of cellulose bulk fibre, as: cotton wax etc.Feel is more soft and smooth, and fluffy sense is better.

Summary of the invention

The objective of the invention is to improve dyeing efficient in order to reduce environmental pollution, a kind of new dyeing technology that cuts down the consumption of energy by rationally making used additives, is optimized dyeing, thereby improves dyeing efficient.

The invention provides a kind of colouring method of first fixation poststaining of cellulose bulk fibre, this method has been put upside down the fiber traditional dyeing technology of dyeing back fixation earlier, for earlier the cellulose bulk fibre being carried out the fixation preliminary treatment through a certain amount of active dye fixing agent, then in the environment of salt-free alkali-free, finish dyeing.

The environment of described salt-free alkali-free refers to not drop in the dye vat glauber salt, industrial table salt inorganic and organic salts such as (sodium chloride), soda ash, sheet alkali, substitutes inorganic base and organic bases such as alkali, phosphoric acid alkali.

The colouring method of above-mentioned first fixation poststaining specifically comprises the following steps:

(1) pretreating process: active dye fixing agent, weight percent concentration (o.w.f): 0.5～10%, the pH value of regulating dye bath: 6.5～8.5, add the cellulose bulk fibre; bath raio 1: 5～30, handled 10～50 minutes at 50～95 ℃, bleed off angle water and enter staining procedure;

Preferably, active dye fixing agent, weight percent concentration (o.w.f): 2-5%, the pH value of regulating dye bath: 6.5～8.5, add the cellulose bulk fibre, bath raio 1: 6-10 handled 30～40 minutes at 55-60 ℃, bled off angle water and entered staining procedure.

(2) in the environment of salt-free alkali-free, adopt reactive dyeing;

(3) post processing.

The technology of the described reactive dyeing of step 2 is: REACTIVE DYES, and weight percent concentration (o.w.f): 0.2～5.0%, bath raio 1: 5～30, dyeing temperature: handled 15～60 minutes, and bled off angle water for 50～95 ℃;

Preferably, the technology of the described reactive dyeing of step 2 is: REACTIVE DYES, weight percent concentration (o.w.f): 1.5-4%, bath raio 1: 6-10, dyeing temperature: handled 45～60 minutes, and bled off angle water for 60～75 ℃.

The post processing of described step 3 is for soaping soaping agent weight percent concentration (o.w.f): handled 5～30 minutes for 0.1～5%, 60～98 ℃, the back cold water of soaping cleans.

Preferably, the post processing of described step 3 is for soaping, and soaping agent weight percent concentration (o.w.f): 0.2-0.3% handled 5～15 minutes for 80-95 ℃, and the back cold water of soaping cleans.

Above-mentioned weight percent concentration is basic calculation with the bulk fibre gross weight all.

Described active dye fixing agent is PAH family macromolecule polymer, and this polymer is a kind of textile auxiliary, can use the commercially available prod, as: the SL-CF of the rich chemical industry of Shanghai match fine jade Guangdong match, the TCD-R of Zhejiang Jiande white sand Chemical Manufacture etc.

The employed dyestuff of described dyeing course is REACTIVE DYES, can use conventional commercially available prod.

In the described step 2, bleed off angle water after, cold water cleans the 0-2 road.Cold water cleans concrete condition to be decided according to shade.Middle light color is not washed, and dark special dark color needs to clean.

Described soaping agent is the enzyme of soaping, the enzyme of soaping that the preferred Shanghai sodium worker of unit produces, the enzyme of soaping that the Zhejiang development of evil in febrile disease is produced.

Adopt above-mentioned cellulose dyeing technology, product need not to carry out soft finish, has kept the natural wax part of cotton fiber, cellulosic fibrous structure is not destroyed, not only feel is more fluffy smooth, and has improved hydrophily, has also improved the spinnability of fiber simultaneously.

Adopt above-mentioned cellulose loose stock dyeing technology dyeing, after dyeing, also can add some softeners and further improve pliability.

Adopt above-mentioned cellulose loose stock dyeing technology dyeing, need not to add refining agent during preliminary treatment.

Adopt above-mentioned cellulose loose stock dyeing technology dyeing, aftertreatment technology can directly carry out after dyeing is finished, and does not need neutralization, also can not need washing.

Cellulose bulk fibre described in the present invention is regenerated celulose fibre, as viscose glue, MODAL, day silk, bamboo fibre etc.; And native cellulose fibre, as cotton, sliver, comber web and flax fibre.

The colouring method of the first fixation poststaining of cellulose fibre of the present invention has following characteristics:

1, through using single auxiliary agent preliminary treatment can improve the fiber fluffy degree, and traditional technology feel harden, very coarse;

2, do not adopt common refining agent refining, guarantee the brute force of fiber, improved spinnability.

3, kept the wax part of native cellulose fibre, feel is soft and smooth, has good spinnability;

4, simplify than traditional technological process, the time is shorter, and energy consumption is lower, and relative productivity significantly promotes, do not use saline and alkalinely, do not need neutralization, labour intensity reduces, and has reduced the dyeing and finishing auxiliaries utilization rate, product is environmental protection more, and the waste water treatment expense significantly reduces, and production cost is lower.

5, do not dye at fibre structure, its fiber short down rate obviously descends, and the fabric anti-fluffing anti-pilling performance obviously improves; The natural characteristic that has kept cellulose fibre to greatest extent, sense comfortable and easy to wear is better.

6, can be applied to middle light color, middle deep colour dyeing, Color can satisfy the various requirement of normal dyeing.

The quick environmental protection of colouring method of the present invention, this method has been put upside down the fiber traditional dyeing technology of dyeing back fixation earlier, earlier cellulose fibre is handled poststaining through active dye fixing agent, this color-fixing agent can obviously improve the dyestuff dye-uptake after handling, dyeing relief angle water does not need neutralization near colourless, adds the enzyme soaping agent when soaping, whole dyeing course dyeing and the COD of sewage of soaping can descend about 70%, and colourity reduces greatly.Dyeing is environmental protection very.

Simultaneously do not add the preliminary treatment refining agent in the preliminary treatment, kept the association material of native cellulose fibre, as cotton wax etc., kept characteristic and the feel of natural fabric to greatest extent, fluffy sense is better; Guarantee the following process spinnability.Save the adding of dyeing link salt, alkali, reduced labour intensity, reduced because the residual pollution on the environment of inorganic salts; Simplify dyeing, shortened dyeing time, solved problems such as the traditional handicraft dye utilization rate is low, contaminated environment substantially, for the client provides environmental protection more, green product, be suitable for underwear, sweater, shirt etc.

Description of drawings

Fig. 1 process route chart of the present invention

1. normal temperature water inlet 2. add pretreating agent 3. be incubated 4. add dyestuff 5. dye insulation 6. add soap enzyme 7. 80 ~ 98 degree clear water of soaping 8. wash

The specific embodiment

Embodiment 1 cotton bulk fibre green colouring

Select 100 kilograms of bulk cotton fibres for use, put into 1: 10 dye bath of bath raio at normal temperatures, add color-fixing agent SBL-CF2%, regulate the pH value of dye bath: 6.5, add the cellulose bulk fibre, handled 30 minutes at 60 ℃.Bleed off water inlet again behind the water of angle, add the bright blue G 1.0% of REACTIVE DYES, M-7G is light yellow 0.5%, dyeing temperature: handled 45 minutes for 75 ℃.Behind cold wash 1 road, enter and soap, the enzyme powder consumption of soaping was handled 5 minutes for 0.2%, 95 ℃.Wash water goes out cylinder 1 time.The COD test of the relief angle that dyeed water is 450ppm, and the COD that soaps test is for about 337ppm, and dye-uptake is tested by absorbance and reached about 95%.

Embodiment 2 MODAL bulk fibres dye black

Select 150 kilograms of MODAL bulk fibres for use, put into 1: 9 dye bath of bath raio at normal temperatures, add color-fixing agent SBL-CF5%, regulate the pH value of dye bath: 7, add the MODAL bulk fibre, handled 30 minutes at 50 ℃.Again intake after bleeding off angle water, add REACTIVE DYES HUNSAMN super black G 2%, black R handles for 1.5%, 60 ℃ and bled off angle water in 60 minutes, after cold water cleans 2 roads, enters and soaps, and the enzyme powder consumption of soaping is handled 10 clocks for 0.3%, 90 ℃.Wash water goes out cylinder twice.

The COD test of the relief angle that dyeed water is 650ppm, and the COD that soaps test is for about 470ppm, and dye-uptake is tested by absorbance and reached about 90%.

3 days silk bulk fibres of embodiment dye large red

Select 300 kilograms of sky silk bulk fibres for use, put into bath raio dye bath in 1: 7 at normal temperatures, add color-fixing agent TCD-R 5%, regulate the pH value of dye bath: 8.5, handled 30 minutes at 60 ℃.Again intake after bleeding off angle water, add 1.4%, 60 ℃ of processing of REACTIVE DYES 3BS 2.5%3RS and bled off angle water in 50 minutes, directly enter and soap, the enzyme powder consumption of soaping is handled 15 clocks for 0.3%, 80 ℃.Wash water goes out cylinder twice.

The COD test of the relief angle that dyeed water is 480ppm, and the COD that soaps test is for about 310ppm, and dye-uptake is tested by absorbance and reached about 96%.

Embodiment 4 viscose glue bulk fibres dye coffee color

Select 250 kilograms of sky silk bulk fibres for use, put into bath raio dye bath in 1: 6 at normal temperatures, add color-fixing agent SBL-CF 5%, regulate the pH value of dye bath: 7, handled 40 minutes at 55 ℃.Again intake after bleeding off angle water, add REACTIVE DYES 3BS 1.51%3RS 1.2%, KN-B is black, and 0.3%60 ℃ of processing bled off angle water in 60 minutes, directly entered and soaped, and the enzyme powder consumption of soaping is handled 15 clocks for 0.2%, 80 ℃.Wash water goes out cylinder twice.The COD test of the relief angle that dyeed water is 360ppm, and the COD that soaps test is for about 270ppm, and dye-uptake is tested by absorbance and reached about 96%.

Embodiment 5 COLOR FASTNESS detect

Select 170 kilograms of sliver bulk fibres for use, put into 1: 8 dye bath of bath raio at normal temperatures, add color-fixing agent SBL-CF 4%, regulate the pH value of dye bath: 8, add the cellulose bulk fibre, handled 30 minutes at 60 ℃.Bleed off water inlet again behind the water of angle, add the bright blue G 3.0% of REACTIVE DYES, M-7G is light yellow 0.5%, 3RS Huang 0.5%, dyeing temperature: handled 60 minutes for 75 ℃.Bleed off angle water and clean 1 road, directly enter and soap, the enzyme powder consumption of soaping was handled 5 minutes for 0.2%, 95 ℃.Wash water goes out cylinder 1 time.The COD test of the relief angle that dyeed water is 630ppm, and the COD that soaps test is 446ppm, and dye-uptake reaches about 90% by the absorbance test.

The fastness test

Claims

1. a cellulose bulk fibre rapid dyeing method for earlier the cellulose bulk fibre being carried out the fixation preliminary treatment through active dye fixing agent, is then finished dyeing in the environment of salt-free alkali-free, and described active dye fixing agent is TCD-R, specifically comprises the following steps:

(1) fixation preliminary treatment: adopt active dye fixing agent to carry out the fixation preliminary treatment, based on the bulk fibre gross weight, the weight percent concentration of active dye fixing agent is 0.5～10%, the pH value of regulating dye bath is 6.5～8.5, add the cellulose bulk fibre; bath raio 1:5～30, handled 10～50 minutes at 50～95 ℃, bleed off angle water and enter staining procedure;

(2) in the environment of salt-free alkali-free, adopt reactive dyeing;

(3) post processing.

2. cellulose bulk fibre rapid dyeing method according to claim 1, it is characterized in that, in the described step 2, the method of reactive dyeing is: based on the bulk fibre gross weight, the REACTIVE DYES weight percent concentration is 0.2～5.0%; bath raio 1:5～30, dyeing temperature: handled 15～60 minutes, and bled off angle water for 50～95 ℃.

3. as cellulose bulk fibre rapid dyeing method as described in the claim 2, it is characterized in that, in the described step 2, bleed off angle water after, cold water cleans the 0-2 road.

4. cellulose bulk fibre rapid dyeing method according to claim 1 is characterized in that, the method for described post processing is for soaping, and based on total weight of fiber, the weight percent concentration of soaping agent is 0.1～5%, 60～98 ℃ and handled 5～30 minutes.

5. as cellulose bulk fibre rapid dyeing method as described in the claim 4, it is characterized in that described soaping agent is the enzyme of soaping.

6. as cellulose bulk fibre rapid dyeing method as described in the claim 4, it is characterized in that described post processing comprises that also adding softener carries out soft treatment.

7. cellulose bulk fibre rapid dyeing method according to claim 1 is characterized in that, need not to add refining agent during the bulk fibre preliminary treatment.

8. cellulose bulk fibre rapid dyeing method according to claim 1 is characterized in that the aftertreatment technology of described step 3 directly carries out after dyeing is finished, and does not need neutralization.

9. as cellulose bulk fibre rapid dyeing method as described in the arbitrary claim of claim 1-8, it is characterized in that described cellulose bulk fibre is regenerated celulose fibre or native cellulose fibre.

10. as cellulose bulk fibre rapid dyeing method as described in the claim 9, described it is characterized in that, described cellulose bulk fibre is viscose glue, cotton or flax fibre.

11. as cellulose bulk fibre rapid dyeing method as described in the claim 9, described it is characterized in that, described cellulose bulk fibre is MODAL, day silk or bamboo fibre.