CN109811558A - A method of using textile waste production dyestuff to textile dyeing - Google Patents
A method of using textile waste production dyestuff to textile dyeing Download PDFInfo
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Abstract
The present invention provides a kind of using textile waste production dyestuff to the method for textile dyeing.Method includes the following steps: textile waste is carried out fiber grinding, fiber dust is obtained；Cationization processing is carried out using cationic finishing agent fabric, obtains fabric to be dyed；Dyed fabric is treated as dyestuff using the fiber dust of acquisition to be dyed, and the fabric of fiber dust dyeing is obtained.The present invention can effectively grind to obtain the fiber dust that partial size is tiny, granularity is lower and is evenly distributed by fiber grinding method, facilitate the upper dye of fiber dust in subsequent dyeing course, improve dye-uptake；The technique that the present invention handles fabric not only increases dyeing uniformity, dye-uptake and color fastness, is also greatly reduced fiber dust dosage；The present invention can be realized recycling for fiber and dyestuff, reduce a large amount of waste fiber pollution on the environments.
Description
Technical field
The invention belongs to technical field of textile printing, are related to a kind of side using textile waste production dyestuff to textile dyeing
Method.
Background technique
It is widely used in textile industry due to high stability that synthetic dyestuffs have.Natural dye is using less, master
It will be since its stability is bad, reproducibility and dyed fabric color fastness are short of.By being carried out using the fiber dyed
Grinding is used as dyestuff, reduces the pollution occurred by production synthetic dyestuffs.And dyeing effect, which has, to compare favourably with synthetic dyestuffs
Stability, realize fiber and dyestuff recycles (dye fabric with waste fabric), meets sustainable development
Exhibition theory reduces a large amount of waste fiber pollution on the environments.
In the prior art about some researchs that recycled of fiber dyes, such as: application No. is
201680063480.3 patent application, this application is due to fiber dust and is colored between fabric without affinity, fiber dust
Dosage is very high, up to 50%owf dosage, and dye-uptake is low, and color fastness is low；Moreover, the preparation process of fiber dust
In reactive materials are utilized, such as: colloid silicic acid, polyvinyl acetate etc. handle fabric, though can effectively obtain fiber powder
End, but increase secondary pollution；Meanwhile reactive materials may have broken ring to fiber itself, it is raw with small molecule by-product
At reducing product yield.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of using textile waste production dyestuff to fabric
The method of dyeing.This method is raw material using factory's colored fabric or yarn, the lapping mode production dyestuff being simple and efficient,
Process is short；It recycles the fiber dust dyestuff of production to dye fabric, improves the dye-uptake of fiber dust dyeing；Utilize this
Method improves dye-uptake, utilization rate and the color fastness of fiber dust.
The purpose of the present invention is achieved by the following technical programs:
On the one hand, the present invention provides a kind of method using textile waste production dyestuff to textile dyeing, and this method includes
Following steps:
Textile waste is carried out fiber grinding, obtains fiber dust by step 1；
Step 2 carries out cationization processing to fabric using cationic finishing agent, obtains fabric to be dyed；
Step 3 is treated dyed fabric as dyestuff using the fiber dust that step 1 obtains and is dyed, obtains fiber
The fabric of powder dyeing.
In above-mentioned method, it is preferable that the textile waste is coloured textile waste, is not limited by fibrous raw material type,
It further include textile garment waste including natural fiber material cotton, hair, silk, fiber crops and synthesising fibre material, such as discarded clothes,
Recycle clothes etc..It does not need to separate the waste of blended raw material in advance.
In above-mentioned method, it is preferable that the textile waste further includes carrying out color point to it before carrying out fiber grinding
The step of class.
In above-mentioned method, it is preferable that the fabric is by desizing-kiering fabric.
In above-mentioned method, it is preferable that include that refrigeration grinding machine, the formula of hitting are ground to the equipment that textile waste carries out fiber grinding
Grind one of instrument, ball milling instrument and rod milling instrument or a variety of combinations.
The applicant obtains the small fiber dust of partial size the study found that effectively grinding, and is to have to subsequent raising dye-uptake
Benefit, it can be improved the dye-uptake of subsequent fiber powder, and by the color fastness of dyeing and weaving object；The technical solution is in actual production process
In have producing feasibility.
Fiber process of lapping can use single milling apparatus, can also be using the multistage grinding of multiple milling apparatus cooperation.
Such as: it first passes through ball milling instrument and is simply crushed, recycle refrigeration grinding machine further to grind and obtain fiber dust.
In above-mentioned method, it is preferable that the process of lapping uses dry grinding, does not add any lapping liquid, has ground
Drying and processing is not necessarily at rear.
In above-mentioned method, it is preferable that the frequency of the fiber grinding is 2000-5000 times/min, milling time 3-
60min。
In above-mentioned method, it is preferable that the frequency of the fiber grinding is 2800-4200 times/min, milling time 5-
30min。
Even-grained fiber dust can be obtained using the grinding frequency of above-mentioned setting and time.
In above-mentioned method, it is preferable that the partial size of the fiber dust is 3-60 μm.
In above-mentioned method, it is preferable that the partial size of the fiber dust is 5-25 μm.
The study found that the obtained fiber dust partial size of grinding is small and uniform, such particle size range is more advantageous to the applicant
The upper dye of fiber dust in subsequent dyeing course improves dye-uptake.
It further include that anionic treatments are first carried out to fabric before carrying out treated cation to fabric in above-mentioned method
Step.
In above-mentioned method, it is preferable that the anionic treatments agent includes polyethylene glycol, polyglycol ether and polyethylene glycol
One of derivative etc. or a variety of combinations.
In above-mentioned method, it is preferable that the polyethyleneglycol derivative includes amino-polyethyleneglycols and/or the poly- second two of carboxyl
Alcohol etc..
In above-mentioned method, it is preferable that the bath raio control for carrying out anionic processing is 1:(15-40)；The anion
The dosage of inorganic agent is 0.2-1.0g/L.
In above-mentioned method, it is preferable that the treatment temperature for carrying out anionic processing is 50-90 DEG C；The processing time is 5-
40min。
In above-mentioned method, it is preferable that the treatment temperature for carrying out anionic processing is 55-70 DEG C；The processing time is 10-
20min。
The applicant is the study found that anionic treatments have vital influence to dye-uptake is improved, using the present invention
Anionic treatments agent processing after, can achieve fiber surface and be uniformly distributed anionic group, improve the anionic property of fiber,
Enhance the electrostatic attraction to cationic groups, and then promote cation-modified degree in next step, improves and contaminated on fiber dust
The effect of rate；The uniformity of processing directly affects the uniformity and dye-uptake of subsequent dyeing simultaneously, and the application research discovery uses
The anionic treatments agent of 0.2-1.0g/L and treatment temperature of the invention and processing time can reach preferable treatment effect.
In above-mentioned method, it is preferable that the cationic finishing agent includes polyamines quasi polymer, acylamide polymer, ring
Oxygen class compound, quaternary ammonium compound, cationic acrylamide base co-polymer, natural cationic modifying agent, polycation system chemical combination
One of the small molecules such as object or macromolecular cation modifier or a variety of combinations.
In above-mentioned method, it is preferable that the polyamines quasi polymer includes nitrogen heterocyclic cation compound etc.；The amide
Quasi polymer includes polyamide etc., and the quaternary ammonium compound includes cyanuro quaternary ammonium compound etc..
In above-mentioned method, it is preferable that the bath raio control for carrying out cationization processing is 1:(15-40)；The cation
The dosage of inorganic agent is 2%-10%owf.Owf refers to: the mass ratio of cationic finishing agent and fabric, such as: 2%-10%owf is
Refer to: 100g fabric (fabric) needs the cationic finishing agent of 2-10g.
In above-mentioned method, it is preferable that the treatment temperature for carrying out cationization processing is 30-80 DEG C；The processing time is 5-
40min。
In above-mentioned method, it is preferable that the treatment temperature for carrying out cationization processing is 45-70 DEG C；The processing time is 10-
30min。
The applicant the study found that fabric carry out anionic processing after using the application cationic finishing agent into
Row cationization handles the electrostatic attraction that can enhance fabric and fiber dust in subsequent dyeing course, helps to provide dye
Rate.
In above-mentioned method, it is preferable that in step 3, treat dyed fabric as dyestuff using fiber dust and contaminated
The method of color includes pad dyeing, dip dyeing, stamp, piece dyeing or ready-made clothes dye.
In above-mentioned method, it is preferable that in step 3, treat dyed fabric as dyestuff using fiber dust and contaminated
The bath raio control of color is 1:(5-40)；The dosage of the fiber dust is 5%-15%owf.
In above-mentioned method, it is preferable that the treatment temperature dyed is 30-85 DEG C；The processing time is 5-40min.
In above-mentioned method, it is preferable that the treatment temperature dyed is 50-80 DEG C；The processing time is 10-30min.
In above-mentioned method, it is preferable that after being carried out to the fabric after fiber dust dyes
The step of reason；The post-treatment reagents include one of acrylic polymer, polyvinyl alcohol and carboxymethyl cellulose etc. or
A variety of combinations.
In above-mentioned method, it is preferable that the acrylic polymer includes water-soluble acrylic emulsion etc..
In above-mentioned method, it is preferable that the bath raio control post-processed is 1:(5-40)；The use of the post-treatment reagents
Amount is 2-8g/L.
In above-mentioned method, the cationization processing, the anionic treatments agent, the post-treatment agent are all made of water-soluble
Liquid is formulated as solvent.
In above-mentioned method, it is preferable that the treatment temperature post-processed is 40-80 DEG C；The processing time is 10-60min.
On the other hand, the application the present invention also provides a kind of fiber dust in textile dyeing, stamp, the fiber dust
For the fiber dust obtained in the above method.
Beneficial effects of the present invention:
(1) present invention can effectively grind to obtain that partial size is tiny, granularity is lower and is evenly distributed by fiber grinding method
Fiber dust, facilitate the upper dye of fiber dust in subsequent dyeing course, improve dye-uptake.
(2) present invention is studied and is improved to dyeing, especially carries out anionic treatments first to fabric, then
Treated cation is carried out again, dyed fabric is post-processed after dyeing, and such technique not only increases dyeing uniformity, upper dye
Rate and color fastness are also greatly reduced fiber dust dosage.
(3) method of the invention can be realized recycling for fiber and dyestuff, reduces a large amount of waste fibers and makes to environment
At pollution.
Detailed description of the invention
Figure 1A is the microscope figure that the fiber dust partial size in the embodiment of the present invention 1 after fiber grinding is 5-50 μm；
Figure 1B is the microscope figure that the fiber dust partial size in the embodiment of the present invention 1 after fiber grinding is 5-30 μm；
Fig. 1 C is the microscope figure that the fiber dust partial size in the embodiment of the present invention 1 after fiber grinding is 5-15 μm.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now to skill of the invention
Art scheme carries out described further below, but should not be understood as that limiting the scope of the invention.
The chemical reagent etc. taken in the present embodiment, if being commercially available acquisition without specified otherwise.
Embodiment 1
This implementation provide it is a kind of using textile waste production dyestuff to the method for textile dyeing, this method includes following step
It is rapid:
The red cotton fabric dyed discarded in process of factory production is first carried out coarse crushing by step 1, then will be thick
The red cotton fabric of crushing carries out high-efficient grinding using jarring formula beveller, and grinding frequency is 2800 times/min, milling time
5min sieves fiber dust, obtains effective fiber powder, partial size is at 30-60 μm.As shown in Figure 1A, Figure 1B and Fig. 1 C,
Figure 1A: grinding 3min (x400), partial size: 5-50um；Figure 1B: grinding 5min (x400), partial size: 5-30um；Fig. 1 C: grinding
10min (x400), partial size: 5-15um.
Step 2 carries out anionic processing, the poly- second two of carboxyl to fabric using anionic treatments agent carboxy polyethylene glycol
The dosage of alcohol is 0.3g/L, and bath raio control is 1:20；The temperature of anionic processing is 60 DEG C, and the processing time is 10min；
Then recycle cationic finishing agent polyamide aqueous solution to anionic treated fabric carry out sun from
Sub-ization processing, the dosage of polyamide aqueous solution are 5%owf, and bath raio control is 1:30；The temperature of cationization processing is 50
℃；The processing time is 30min；Obtain fabric to be dyed.
Step 3 is treated dyed fabric as dyestuff using the fiber dust that step 1 obtains and is dyed, colouring method
For dip dyeing, the dosage of fiber dust is 10%owf, and fiber dust mixing 15min is added in the case where bath raio is 1:10, is warming up to 80 DEG C
Carry out dyeing processing 30min；
After the completion of dyeing, water-soluble acrylic emulsion is added and is post-processed, the bath raio control post-processed is 1:
20, the dosage of water-soluble acrylic emulsion is 3g/L；The temperature of post-processing is 60 DEG C, and the processing time is 10min.After post-processing
Obtain the fabric of fiber dust dyeing.
The fiber dust dyeing fabric have good color fastness, 3.0 grades of light fastness, other color fastness >=4.0 grade.
It is as shown in table 1 below according to AATCC method test color fastness result:
Table 1:
By 1 experimental data of table it can be seen that the dyed fabric that thus method is completed, washing fastness, crock fastness, sweat stain degree
>=4.0 grade, 3.0 grades of light fastness, indices are qualified.
Embodiment 2
This implementation provide it is a kind of using textile waste production dyestuff to the method for textile dyeing, this method includes following step
It is rapid:
The yellow cotton fabric dyed discarded in process of factory production is first carried out coarse crushing by step 1, then will be thick
The yellow cotton fabric of crushing carries out high-efficient grinding using jarring formula beveller, and grinding frequency is 3200 times/min, milling time
5min sieves fiber dust, obtains effective fiber powder, partial size is at 15-50 μm.
Step 2 carries out anionic processing, the poly- second two of carboxyl to fabric using anionic treatments agent carboxy polyethylene glycol
The dosage of alcohol is 0.5g/L, and bath raio control is 1:30；The temperature of anionic processing is 60 DEG C, and the processing time is 10min；
Then recycle cationic finishing agent polyamide aqueous solution to anionic treated fabric carry out sun from
Sub-ization processing, the dosage of polyamide aqueous solution are 5%owf, and bath raio control is 1:30；The temperature of cationization processing is 50
℃；The processing time is 30min；Obtain fabric to be dyed.
Step 3 is treated dyed fabric as dyestuff using the fiber dust that step 1 obtains and is dyed, colouring method
For dip dyeing, the dosage of fiber dust is 10%owf, and fiber dust mixing 15min is added in the case where bath raio is 1:15, is warming up to 80 DEG C
Carry out dyeing processing 30min；
After the completion of dyeing, water-soluble acrylic emulsion is added and is post-processed, the bath raio control post-processed is 1:
20, the dosage of water-soluble acrylic emulsion is 3g/L；The temperature of post-processing is 60 DEG C, and the processing time is 10min.After post-processing
Obtain the fabric of fiber dust dyeing.
The fiber dust dyeing fabric have good color fastness, 3.0 grades of light fastness, other color fastness >=4.0 grade.
It is as shown in table 2 below according to AATCC method test color fastness result:
Table 2:
By 2 experimental data of table it can be seen that the dyed fabric that thus method is completed, washing fastness, crock fastness, sweat stain degree
>=4.0 grade, 3.0 grades of light fastness, indices are qualified.
Embodiment 3
This implementation provide it is a kind of using textile waste production dyestuff to the method for textile dyeing, this method includes following step
It is rapid:
The blue cotton fabric dyed discarded in process of factory production is first carried out coarse crushing by step 1, then will be thick
The blue cotton fabric of crushing carries out high-efficient grinding using jarring formula beveller, and grinding frequency is 3600 times/min, milling time
5min sieves fiber dust, obtains effective fiber powder, partial size is at 5-30 μm.
Step 2 carries out anionic processing, the poly- second two of carboxyl to fabric using anionic treatments agent carboxy polyethylene glycol
The dosage of alcohol is 0.5g/L, and bath raio control is 1:40；The temperature of anionic processing is 60 DEG C, and the processing time is 10min；
Then cationic finishing agent nitrogen heterocyclic cation compound (Suzhou Heng Wang Chemical Co., Ltd. HW-168B) is recycled
To anionic treated fabric carries out cationization processing, the dosage of nitrogen heterocyclic cation compound is 10%owf, bath raio
Control is 1:30；The temperature of cationization processing is 50 DEG C；The processing time is 30min；Obtain fabric to be dyed.
Step 3 is treated dyed fabric as dyestuff using the fiber dust that step 1 obtains and is dyed, colouring method
For dip dyeing, the dosage of fiber dust is 10%owf, and fiber dust mixing 15min is added in the case where bath raio is 1:20, is warming up to 80 DEG C
Carry out dyeing processing 30min；
After the completion of dyeing, water-soluble acrylic emulsion is added and is post-processed, the bath raio control post-processed is 1:
20, the dosage of water-soluble acrylic emulsion is 5g/L；The temperature of post-processing is 60 DEG C, and the processing time is 20min.After post-processing
Obtain the fabric of fiber dust dyeing.
The fiber dust dyeing fabric have good color fastness, 4.0 grades of light fastness, other color fastness >=4.5 grade.
It is as shown in table 3 below according to AATCC method test color fastness result:
Table 3:
By 3 experimental data of table it can be seen that the dyed fabric that thus method is completed, washing fastness, crock fastness, sweat stain degree
>=4.0 grade, 4.0 grades of light fastness, indices are qualified.
Embodiment 4
The present embodiment provides application of the fiber dust of fiber grinding acquisition in stamp.Specifically:
To the green fiber powder that grinding obtains, stamp is carried out to fabric, the fabric of use is (70/30) 30s CVC
Cotton/poly plain weave woven fabric, grammes per square metre 145g/m2。
Configure printing paste: (Guangzhou Xin Yi Chemical Co., Ltd. is raw by the fiber dust containing 10g/L, 5g/L thickener SL681
Produce), 50g/L adhesive SHW (production of Changzhou Xu Jie textile material Co., Ltd), water is solvent.After mentioned component mixing uniformly
After stir 10min, speed of agitator 200r/min.
Printing technology: speed 10m/min, applied amount 60g/m2, stamp net, 80CH net.
The fabric of stamp will be completed in 120 DEG C of drying 1min, 150 DEG C bake 2min and carry out fixation, are finally formed soft
To stamp finished fabric.Color fastness test is carried out to obtained stamp finished fabric, tests its every color jail according to AATCC method
Degree, the results are shown in Table 4.
Table 4:
By 4 experimental data of table it can be seen that the PRINTED FABRIC that thus method is completed, indices are qualified.
Comparative example 1
Referring to the production procedure in embodiment 1, fabric is not post-processed after dyeing, remaining production procedure is all
It is identical as production procedure in embodiment 1, obtain counterstain fabric.According to shown in AATCC method test fastness result table 5.
Table 5:
By 5 experimental result comparative example 1 of table it can be seen that comparison discovery, the fastness of comparative example decrease, solarization
Fastness is only 2.0 grades, fastness to wet rubbing, sweat stain staining fastness and water stain staining fastness≤3.5 grade, other color fastness≤4.0 grade.
Comparative examples 1 are determined fiber dust utilization rate using weight method, as shown in table 6 below.
Table 6:
As can be seen from Table 6: being dyed according to the technique in comparative example, the utilization rate of fiber dust is only 7.75%.
Fiber dust utilization rate can be effectively improved according to the present invention, is 20.15%.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of produce dyestuff to the method for textile dyeing using textile waste, which is characterized in that method includes the following steps:
Textile waste is carried out fiber grinding, obtains fiber dust by step 1；
Step 2 carries out cationization processing to fabric using cationic finishing agent, obtains fabric to be dyed；
Step 3 is treated dyed fabric as dyestuff using the fiber dust that step 1 obtains and is dyed, obtains fiber dust
The fabric of dyeing.
2. according to the method described in claim 1, it is characterized by: the textile waste is coloured textile waste, not by fiber
Type of feed limitation, including natural fiber material cotton, hair, silk, fiber crops and fibers material, further include textile garment waste；
Preferably, the textile waste further includes the steps that carrying out color classification to it before carrying out fiber grinding；
Preferably, the fabric is by desizing-kiering fabric.
3. according to the method described in claim 1, it is characterized by: the equipment for carrying out fiber grinding to textile waste includes freezing
Grinder one of hits formula beveller, ball milling instrument and rod milling instrument or a variety of combinations；
Preferably, the process of lapping uses dry grinding, does not add any lapping liquid, is not necessarily to drying and processing after the completion of grinding；
Preferably, the frequency of the fiber grinding is 2000-5000 times/min, milling time 3-60min；
It is further preferred that the frequency of the fiber grinding is 2800-4200 times/min, milling time 5-30min.
4. according to the method described in claim 1, it is characterized by: the partial size of the fiber dust is 3-60 μm；Preferably, institute
The partial size for stating fiber dust is 5-25 μm.
5. according to the method described in claim 1, it is characterized by: further including to knitting before carrying out treated cation to fabric
Object first carries out the step of anionic treatments；
Preferably, the anionic treatments agent include one of polyethylene glycol, polyglycol ether and polyethyleneglycol derivative or
A variety of combinations；
Preferably, the polyethyleneglycol derivative includes amino-polyethyleneglycols and/or carboxy polyethylene glycol；
Preferably, the bath raio control for carrying out anionic processing is 1:(15-40)；The dosage of the anionic treatments agent is 0.2-
1.0g/L；
Preferably, the treatment temperature for carrying out anionic processing is 50-90 DEG C；The processing time is 5-40min；
It is further preferred that the treatment temperature for carrying out anionic processing is 55-70 DEG C；The processing time is 10-20min.
6. according to the method described in claim 1, it is characterized by: the cationic finishing agent includes polyamines quasi polymer, acyl
Amine polymer, epoxy compounds, quaternary ammonium compound, cationic acrylamide base co-polymer, natural cationic modifying agent and
One of polycation based compound or a variety of combinations；
Preferably, the polyamines quasi polymer includes nitrogen heterocyclic cation compound；The acylamide polymer includes polyamide
Resin；Quaternary ammonium compound includes cyanuro quaternary ammonium compound；
Preferably, the bath raio control for carrying out cationization processing is 1:(15-40)；The dosage of the cationic finishing agent is 2%-
10%owf；
Preferably, the treatment temperature for carrying out cationization processing is 30-80 DEG C；The processing time is 5-40min；
It is further preferred that the treatment temperature for carrying out cationization processing is 45-70 DEG C；The processing time is 10-30min.
7. according to the method described in claim 1, it is characterized by: being treated in step 3 using fiber dust as dyestuff
The method that dyed fabric is dyed includes pad dyeing, dip dyeing, stamp, piece dyeing or ready-made clothes dye.
8. according to the method described in claim 1, it is characterized by: being treated in step 3 using fiber dust as dyestuff
The bath raio control that dyed fabric is dyed is 1:(5-40)；The dosage of the fiber dust is 5%-15%owf；
Preferably, the treatment temperature dyed is 30-85 DEG C；The processing time is 5-40min；
It is further preferred that the treatment temperature dyed is 50-80 DEG C；The processing time is 10-30min.
9. the method according to claim 1, wherein the method also includes to after fiber dust dyes
The step of fabric is post-processed；The post-treatment reagents include acrylic polymer, polyvinyl alcohol and carboxymethyl cellulose
One of or a variety of combinations；
Preferably, the acrylic polymer includes water-soluble acrylic emulsion；
Preferably, the bath raio control post-processed is 1:(5-40)；The dosage of the post-treatment reagents is 2-8g/L；
Preferably, the treatment temperature post-processed is 40-80 DEG C；The processing time is 10-60min.
10. a kind of application of fiber dust in textile dyeing, stamp, it is characterised in that: the fiber dust is claim
The fiber dust obtained in any one of 1-9 the method.
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Cited By (3)
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| CN110512436A (en) * | 2019-08-30 | 2019-11-29 | 大连工业大学 | A kind of pigment or coating and its preparation method and application based on discarded denim powder |
| CN111234306A (en) * | 2020-01-19 | 2020-06-05 | 广东溢达纺织有限公司 | Method for producing colorant by using textile waste |
| CN115233471A (en) * | 2022-08-17 | 2022-10-25 | 武汉纺织大学 | Method for preparing colored dye by using waste cotton fabric |
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| CN110512436A (en) * | 2019-08-30 | 2019-11-29 | 大连工业大学 | A kind of pigment or coating and its preparation method and application based on discarded denim powder |
| CN111234306A (en) * | 2020-01-19 | 2020-06-05 | 广东溢达纺织有限公司 | Method for producing colorant by using textile waste |
| CN111234306B (en) * | 2020-01-19 | 2022-11-18 | 广东溢达纺织有限公司 | Method for producing colorant by using textile waste |
| CN115233471A (en) * | 2022-08-17 | 2022-10-25 | 武汉纺织大学 | Method for preparing colored dye by using waste cotton fabric |
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