CN117721652A - Ecological clean dyeing method for polyester-cotton blended fabric - Google Patents
Ecological clean dyeing method for polyester-cotton blended fabric Download PDFInfo
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- CN117721652A CN117721652A CN202210471546.XA CN202210471546A CN117721652A CN 117721652 A CN117721652 A CN 117721652A CN 202210471546 A CN202210471546 A CN 202210471546A CN 117721652 A CN117721652 A CN 117721652A
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- polyester
- dyeing
- indigo
- blended fabric
- cotton blended
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- 239000004744 fabric Substances 0.000 title claims abstract description 67
- 238000004043 dyeing Methods 0.000 title claims abstract description 65
- 229920000742 Cotton Polymers 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229920000728 polyester Polymers 0.000 claims abstract description 33
- 229940097275 indigo Drugs 0.000 claims abstract description 27
- 235000000177 Indigofera tinctoria Nutrition 0.000 claims abstract description 24
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000009467 reduction Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 10
- 239000008103 glucose Substances 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 239000000344 soap Substances 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 159000000000 sodium salts Chemical class 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000975 dye Substances 0.000 description 32
- 229930182559 Natural dye Natural products 0.000 description 4
- 239000000978 natural dye Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 241001148659 Panicum dichotomiflorum Species 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses an ecological clean dyeing method of a polyester-cotton blended fabric, which uses laser net making equipment to carry out anhydrous modification on the polyester-cotton blended fabric. On one hand, the problem that the affinity of the plant indigo to the polyester is weak is solved, and the dyeing depth of the plant indigo to the polyester in the polyester-cotton blended fabric is improved; on the other hand, a one-bath two-step dyeing technology of the plant indigo (non-reduction) -indigo leuco body on polyester-cotton blended fabric is developed, namely, the indigo is not reduced into leuco acid to dye the polyester, the non-reduction indigo is directly used for dyeing the polyester, the process is simple, the indigo leuco body is added in residual liquid of polyester fiber dyeing to dye cotton fibers in the blended fabric, and the residual liquid is recycled.
Description
Technical Field
The invention relates to the technical field of fabric dyeing, in particular to an ecological clean dyeing method of a polyester-cotton blended fabric.
Background
The polyester-cotton blended fabric has the skin-friendly hygroscopicity of cotton fibers and the wear-resistant shape-keeping property of polyester, and has wide application. At present, a two-bath two-step method of disperse dye/reactive dye is mainly adopted for dyeing, and the used chemical dye is unfavorable for environmental protection and has larger emission and energy consumption.
The natural dye has special health care effect on human body, and the natural dye is adopted to dye the polyester-cotton blended fabric, so that the application range of the natural dye is widened, and the multiple requirements of people on aesthetic, health and functions are met.
Plant indigo belongs to natural dye, and is derived from natural blue grass, and general plant indigo is reduced and converted into leuco body to dye cotton fiber under alkaline condition, and electrolyte is added to promote dyeing, and then the cotton fiber is oxidized into insoluble indigo on the fiber to be fixed on the cotton fiber; for dyeing of polyester by using plant indigo, although the indigo belongs to anthraquinone dye, the affinity of the indigo to the polyester is low, the dyeing is carried out to obtain light color, and the hydroxyl of the indigo leuco acid forms hydrogen bond with ester groups on the macromolecular chain of the polyester to combine, so the polyester is generally dyed by using the leuco acid of the indigo. At present, the research on dyeing of polyester/cotton blended fabrics by using plant indigo is less, and there is a report that leuco acid is firstly used for dyeing (namely, indigo is firstly reduced into leuco under alkaline condition, then acid is added to convert the leuco into leuco, and then dyeing can be carried out on polyester), and the leuco after the indigo is reduced in alkaline condition is used for dyeing cotton by using a two-bath method.
The laser screen making is the current method for preparing the cylinder pattern plate in the printing and dyeing industry printing cloth processing. The coating on the cylinder is gasified under the control of a computer to expose the meshes, and color paste is printed on the fabric through the meshes during printing.
Disclosure of Invention
The invention aims to provide an ecological cleaning dyeing method for a polyester-cotton blended fabric, which solves one or more of the problems in the prior art.
The invention provides an ecological clean dyeing method of a polyester-cotton blended fabric, which comprises the following steps of:
the method comprises the steps of scanning and modifying a polyester-cotton blended fabric by a laser net making machine, wherein the power of the laser net making machine is 5-10W, the scanning speed is 100-150mm/s, and the scanning precision is 0.2-0.4mm;
preparing a dye liquor, wherein the dye liquor comprises 0.5-1.5% o.w.f of plant indigo and acetic acid, and the pH value of the dye liquor is adjusted to 5-6 by the acetic acid, and the bath ratio is 1:20;
putting the polyester-cotton blended fabric modified by the laser net making machine into a dye liquor;
heating the dye liquor to 130 ℃, and carrying out heat preservation and dyeing for 30min to finish dyeing of polyester fibers in the polyester-cotton blended fabric;
taking out the fabric, adding plant indigo, glucose and alkali into the dyeing residual liquid, reducing the added plant indigo into leuco sodium salt, adding 10-50% o.w.f plant indigo, 40g/L glucose and 20g/L NaOH into the dyeing residual liquid, wherein the reduction temperature is 60 ℃, and the reduction time is 30min;
adding the fabric taken out in the first step into the reduced dye liquor, performing secondary indigo leuco dyeing at 20 ℃ for 60min, and performing ventilation oxidation for 30min to complete dyeing of cotton fibers in the polyester-cotton blended fabric;
and (5) post-treatment.
In some implementationsIn an embodiment, the post-treatment comprises treatment at 80℃for 20min in a treatment fluid comprising 2g/L Na 2 CO 3 And 2g/L of soap flakes, with a bath ratio of 1:50.
The invention has the beneficial effects that:
1. according to the different dosage of plant indigo, the color depth K/S value of the polyester/cotton blended fabric treated by the laser net making machine is increased by 30.17% -125.23%, and the treatment by the laser net making machine belongs to anhydrous modification, and is green and safe.
2. The one-bath two-step dyeing technology for developing plant indigo (non-reduction) -indigo leuco body to polyester cotton blended fabric is characterized in that the indigo is not reduced to leuco acid to dye polyester, polyester fiber in the non-reduction indigo dyed polyester cotton blended fabric is directly used, the process is simple, the indigo leuco body is added in residual liquid of polyester dyeing to dye cotton fiber in the blended fabric, the residual liquid is recycled, and compared with a two-bath method, the emission is reduced.
3. The laser net making machine is used for processing the polyester-cotton blended fabric, so that the problem that the affinity of the plant indigo to polyester is weak is solved, and the dyeing depth of the plant indigo to polyester fibers in the polyester-cotton blended fabric is improved; and the dyeing capability of the indigo leuco on cotton fibers is improved, electrolyte is not required to be added for dyeing promotion during the leuco dyeing of cotton, so that salt-free dyeing is achieved, and the method is beneficial to environmental protection.
4. The laser screen making equipment for processing the rotary screen pattern plate in the existing factory is used for modifying the polyester-cotton blended fabric, has multiple purposes, and does not need to add additional special equipment.
Drawings
Fig. 1 is a process flow diagram of an ecological clean dyeing method for a polyester-cotton blended fabric according to an embodiment of the invention.
Detailed Description
The invention is further described below with reference to examples. The following examples are only for the purpose of more clearly illustrating the properties of the present invention and are not limited to the following examples.
Example 1
An ecological cleaning dyeing method for a polyester-cotton blended fabric comprises the following steps:
the method comprises the steps that a laser net making machine scans and modifies polyester-cotton blended fabrics, wherein the power of the laser net making machine is 10W, the scanning speed is 100mm/s, and the scanning precision is 0.2mm;
preparing a dye liquor, wherein the dye liquor comprises 1.5% o.w.f of plant indigo and acetic acid, and the pH value of the dye liquor is regulated to 5-6 by the acetic acid, and the bath ratio is 1:20;
putting the polyester-cotton blended fabric modified by the laser net making machine into a dye liquor;
heating the dye liquor to 130 ℃, and carrying out heat preservation and dyeing for 30min to finish dyeing of polyester fibers in the polyester-cotton blended fabric;
taking out the fabric, adding plant indigo, glucose and alkali into the dyeing residual liquid, reducing the added plant indigo into leuco sodium salt, adding 50% o.w.f of plant indigo, 40g/L of glucose and 20g/L of NaOH into the dyeing residual liquid, wherein the reduction temperature is 60 ℃, and the reduction time is 30min;
adding the fabric taken out in the first step into the reduced dye liquor, performing secondary indigo leuco dyeing at 20 ℃ for 60min, and performing ventilation oxidation for 30min to complete dyeing of cotton fibers in the polyester-cotton blended fabric;
treating at 80deg.C for 20min in a treatment solution containing 2g/L Na 2 CO 3 And 2g/L of soap flakes, with a bath ratio of 1:50.
The color depth value of the polyester cotton fabric modified by the laser net making machine is increased by 125.23 percent compared with that of the unmodified fabric.
Example 2
The method comprises the steps that a laser net making machine scans and modifies polyester-cotton blended fabrics, wherein the power of the laser net making machine is 5W, the scanning speed is 150mm/s, and the scanning precision is 0.4mm;
preparing a dye liquor, wherein the dye liquor comprises 0.5% o.w.f of plant indigo and acetic acid, and the pH value of the dye liquor is regulated to 5-6 by the acetic acid, and the bath ratio is 1:20;
putting the polyester-cotton blended fabric modified by the laser net making machine into a dye liquor;
heating the dye liquor to 130 ℃, and carrying out heat preservation and dyeing for 30min to finish dyeing of polyester fibers in the polyester-cotton blended fabric;
taking out the fabric, adding plant indigo, glucose and alkali into the dyeing residual liquid, reducing the added plant indigo into leuco sodium salt, adding 10% o.w.f of plant indigo, 40g/L of glucose and 20g/L of NaOH into the dyeing residual liquid, wherein the reduction temperature is 60 ℃, and the reduction time is 30min;
adding the fabric taken out in the first step into the reduced dye liquor, performing secondary indigo leuco dyeing at 20 ℃ for 60min, and performing ventilation oxidation for 30min to complete dyeing of cotton fibers in the polyester-cotton blended fabric;
treating at 80deg.C for 20min in a treatment solution containing 2g/L Na 2 CO 3 And 2g/L of soap flakes, with a bath ratio of 1:50.
The color depth value of the polyester cotton fabric modified by the laser net making machine is improved by 33.33 percent compared with that of the unmodified fabric.
Example 3
An ecological cleaning dyeing method for a polyester-cotton blended fabric comprises the following steps:
the method comprises the steps of scanning and modifying a polyester-cotton blended fabric by a laser net making machine, wherein the power of the laser net making machine is 7W, the scanning speed is 120mm/s, and the scanning precision is 0.3mm;
preparing a dye liquor, wherein the dye liquor comprises 1% o.w.f of plant indigo and acetic acid, and the pH value of the dye liquor is regulated to 5-6 by the acetic acid, and the bath ratio is 1:20;
putting the polyester-cotton blended fabric modified by the laser net making machine into a dye liquor;
heating the dye liquor to 130 ℃, and carrying out heat preservation and dyeing for 30min to finish dyeing of polyester fibers in the polyester-cotton blended fabric;
taking out the fabric, adding plant indigo, glucose and alkali into the dyeing residual liquid, reducing the added plant indigo into leuco sodium salt, adding 20% o.w.f of plant indigo, 40g/L of glucose and 20g/L of NaOH into the dyeing residual liquid, wherein the reduction temperature is 60 ℃, and the reduction time is 30min;
adding the fabric taken out in the first step into the reduced dye liquor, performing secondary indigo leuco dyeing at 20 ℃ for 60min, and performing ventilation oxidation for 30min to complete dyeing of cotton fibers in the polyester-cotton blended fabric;
treating at 80deg.C for 20min in a treatment solution containing 2g/L Na 2 CO 3 And 2g/L of soap flakes, with a bath ratio of 1:50.
The color depth value of the polyester cotton fabric modified by the laser net making machine is improved by 60 percent compared with that of the unmodified fabric.
The examples provided by the invention utilize factory laser screening equipment for the anhydrous modification of polyester-cotton blend fabrics: 1) The problem of weak affinity of the indigo to the polyester is solved, and the dyeing depth of the indigo to the polyester in the polyester-cotton blended fabric is improved; 2) The one-bath two-step dyeing technology for developing plant indigo (non-reduction) -indigo leuco to polyester-cotton blended fabric is characterized by that it does not need to reduce indigo to leuco acid to dye polyester, directly uses indigo to dye polyester, and has simple process, and adds indigo leuco to the residual liquor of polyester dyeing, and uses the residual liquor to dye cotton fibre in the blended fabric, and compared with two-bath method, it can reduce discharge, and can solve the problems of complex two-bath dyeing process (two-time reduction) and two-bath two-time discharge.
The above description is only of a preferred form of the invention, it being understood that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the inventive concept, which shall be regarded as being within the scope of the invention.
Claims (2)
1. The ecological cleaning dyeing method of the polyester-cotton blended fabric is characterized by comprising the following steps of:
the method comprises the steps of scanning and modifying a polyester-cotton blended fabric by a laser net making machine, wherein the power of the laser net making machine is 5-10W, the scanning speed is 100-150mm/s, and the scanning precision is 0.2-0.4mm;
preparing a dye liquor, wherein the dye liquor comprises 0.5-1.5% o.w.f of plant indigo and acetic acid, and the pH value of the dye liquor is adjusted to 5-6 by the acetic acid, and the bath ratio is 1:20;
putting the polyester-cotton blended fabric modified by the laser net making machine into a dye liquor;
heating the dye liquor to 130 ℃, and carrying out heat preservation and dyeing for 30min to finish dyeing of polyester fibers in the polyester-cotton blended fabric;
taking out the fabric, adding plant indigo, glucose and alkali into the dyeing residual liquid, reducing the added plant indigo into leuco sodium salt, adding 10-50% o.w.f plant indigo, 40g/L glucose and 20g/L NaOH into the dyeing residual liquid, wherein the reduction temperature is 60 ℃, and the reduction time is 30min;
adding the fabric taken out in the first step into the reduced dye liquor, performing secondary indigo leuco dyeing at 20 ℃ for 60min, and performing ventilation oxidation for 30min to complete dyeing of cotton fibers in the polyester-cotton blended fabric;
and (5) post-treatment.
2. The method according to claim 1, wherein the post-treatment comprises treatment at 80 ℃ for 20min in a treatment liquid comprising 2g/L Na 2 CO 3 And 2g/L of soap flakes, with a bath ratio of 1:50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471546.XA CN117721652A (en) | 2022-04-29 | 2022-04-29 | Ecological clean dyeing method for polyester-cotton blended fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471546.XA CN117721652A (en) | 2022-04-29 | 2022-04-29 | Ecological clean dyeing method for polyester-cotton blended fabric |
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| Publication Number | Publication Date |
|---|---|
| CN117721652A true CN117721652A (en) | 2024-03-19 |
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| CN202210471546.XA Pending CN117721652A (en) | 2022-04-29 | 2022-04-29 | Ecological clean dyeing method for polyester-cotton blended fabric |
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- 2022-04-29 CN CN202210471546.XA patent/CN117721652A/en active Pending
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