CN117758525A - Dyeing method of high-strength nylon 66 - Google Patents
Dyeing method of high-strength nylon 66 Download PDFInfo
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- CN117758525A CN117758525A CN202311729274.XA CN202311729274A CN117758525A CN 117758525 A CN117758525 A CN 117758525A CN 202311729274 A CN202311729274 A CN 202311729274A CN 117758525 A CN117758525 A CN 117758525A
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- 238000004043 dyeing Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 50
- 229920002302 Nylon 6,6 Polymers 0.000 title claims abstract description 25
- 239000004744 fabric Substances 0.000 claims abstract description 39
- 239000000975 dye Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000009990 desizing Methods 0.000 claims abstract description 13
- 239000000980 acid dye Substances 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 238000004061 bleaching Methods 0.000 claims abstract description 8
- 238000009835 boiling Methods 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 8
- 239000008234 soft water Substances 0.000 claims description 7
- 229960000583 acetic acid Drugs 0.000 claims description 4
- 239000012362 glacial acetic acid Substances 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 3
- 150000004056 anthraquinones Chemical class 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000004383 yellowing Methods 0.000 claims description 3
- 238000009991 scouring Methods 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 238000004513 sizing Methods 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- XOSXWYQMOYSSKB-UHFFFAOYSA-M disodium;4-[4-[(4-amino-3-methyl-5-sulfophenyl)-[4-(4-sulfonatophenyl)azaniumylidenecyclohexa-2,5-dien-1-ylidene]methyl]anilino]benzenesulfonate Chemical compound [Na+].[Na+].OS(=O)(=O)C1=C(N)C(C)=CC(C(=C2C=CC(C=C2)=[NH+]C=2C=CC(=CC=2)S([O-])(=O)=O)C=2C=CC(NC=3C=CC(=CC=3)S([O-])(=O)=O)=CC=2)=C1 XOSXWYQMOYSSKB-UHFFFAOYSA-M 0.000 description 3
- 210000001161 mammalian embryo Anatomy 0.000 description 3
- 229920006052 Chinlon® Polymers 0.000 description 2
- 238000005237 degreasing agent Methods 0.000 description 2
- 239000013527 degreasing agent Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention discloses a dyeing method of high-strength nylon 66. The invention discloses a dyeing method of high-strength nylon 66, which comprises the following steps: 1) Carrying out one bath pretreatment of desizing, boiling and bleaching on the fabric; 2) Carrying out three-stage heating dyeing on the fabric treated in the step 1); wherein the dye adopted in the dyeing is a compound acid dye; 3) Soaping the fabric dyed in the step 2); 4) Fixing the color of the fabric treated in the step 3), and drying; 5) And (3) shaping the fabric treated in the step (4) to obtain the acid dye-dyed high-strength nylon 66. The invention adopts the dyeing flow of pretreatment-dyeing-soaping-fixation-setting, wherein a plurality of molecular structure dyes are mutually matched in the dyeing process, and three-section heating dyeing is adopted to finish dyeing, thus obtaining better color fastness.
Description
Technical Field
The invention belongs to the technical field of textile printing and dyeing processing, and relates to a dyeing method of high-strength nylon 66.
Background
Nylon 66 is widely used in military and civil fields because of its advantages of good wear resistance, high breaking strength, good rebound resilience, and low density. However, nylon 66 fiber is due to its own crystallinityHigh molecular structure, compactness, high intermolecular force and extremely strong chemical stability due to the lack of polar groups on molecular chains. Therefore, nylon 66 is difficult to dye and has limited color fastness even if a certain process is adopted for dyeing. In addition, the internal structure of the nylon fiber is easy to be different due to the influence of factors such as spinning tension, environmental humidity, instrument faults and the like in the production process of the nylon 66, so that the problem of uneven dyeing is caused. Patent CN108049213a discloses a dyeing method of chinlon. The dyeing method has stable process, easily controlled flow, high color fastness to bleeding, washing and rubbing, and good quality. Patent CN102242503B discloses a dyeing method of nylon fabric, and the discharge amount of waste water after dyeing by adopting the method meets the requirements of energy conservation and emission reduction. However, the above patents are mainly directed to the breaking strength of 4.9-5.7 cN dtex -1 The invention relates to a fabric woven by left and right plain Jiang Jinguan and 66 yarns, which is suitable for 5.7-7.7 cN dtex of breaking strength -1 The high-strength nylon 66 fabric is dyed, and simultaneously, the nylon has good dyeing effect and energy-saving and environment-friendly performances.
Disclosure of Invention
The invention aims to provide a dyeing method of high-strength nylon 66. The invention completes dyeing by the dyeing flow of pretreatment, dyeing, soaping, fixation and setting, wherein a plurality of molecular structure dyes are mutually matched in the dyeing process, and better color fastness is obtained.
The invention provides a dyeing method of high-strength nylon 66, which comprises the following steps:
1) Carrying out one bath pretreatment of desizing, boiling and bleaching on the fabric;
2) Dyeing the fabric treated in the step 1);
wherein the dye adopted in the dyeing is an acid dye;
3) Soaping the fabric dyed in the step 2);
4) Fixing the color of the fabric treated in the step 3), and drying;
5) And (3) shaping the fabric treated in the step (4) to obtain the acid dye-dyed high-strength nylon 66.
In the step 1) of the method, the pretreatment liquid adopted in the pretreatment of the desizing, boiling and bleaching one-bath method is a mixture of sodium hydroxide, hydrogen peroxide, a hydrogen peroxide stabilizer, a refining agent, an oil removing agent and a desizing agent.
In the above method, the hydrogen peroxide stabilizer may specifically be TF-122G;
the refining agent can be DM-1306H;
the degreasing agent can be DM-1119N;
the desizing agent can be DM-1322H.
In the method, the pretreatment temperature of the desizing, boiling and bleaching one bath method is 90-110 ℃ and the time is 60-80 min.
In the above method, in step 2), the bath ratio of the fabric to the dyeing solution is 1:10.
In the above method, in the step 2), the dye is an acid dye of anthraquinone type (specifically, acid blue N-GL) and azo type (specifically, acid blue R);
the dyeing treatment process is as follows: preparing dye liquor from the dye by soft water, regulating the pH value to 4.5-5.5 by glacial acetic acid, and adding a fabric deepening agent for dyeing; in the dyeing process, the temperature is raised at the speed of 0.5-1.2 ℃/min, the temperature is raised to 50-60 ℃, and the temperature is kept at 50-60 ℃ for 5-15 min; then heating up to 80-90 ℃ at the speed of 0.5-1.2 ℃/min, and preserving heat for 15-30 min at 80-90 ℃; the dyeing is quickened near the glass transition temperature of the nylon 66 fiber, and the heat preservation is needed for a long time; then heating up to 110-120 ℃ at a speed of 0.5-1.2 ℃/min, and preserving heat for 20-30 min at 110-120 ℃; finally, cooling to room temperature at a speed of 0.5-1.5 ℃/min.
In the above method, in step 3), the step of the soaping treatment is as follows: adding the fabric dyed in the step 2) into 2-3g/L of a dye fastness enhancing soaping agent (specifically NJ-50) solution, raising the water temperature by 45-55 ℃ (specifically 50 ℃), soaping for 15-25 min (specifically 15, 20min or 15-20 min), and then washing the fabric with water.
In the above method, in step 4), the step of the fixation treatment is as follows: soft water is adopted, and 3-5 g/L acid dye fixing agent (specifically AF-100) is added; then heating from room temperature at a speed of 1-2 ℃/min to 75-85 ℃ and keeping the temperature of 75-85 ℃ for 10-15 min; and finally, cooling, namely cooling to 50-60 ℃ at a speed of 1-2 ℃/min, and washing with water.
In the method, in the step 5), the shaping temperature is 100-110 ℃ and the shaping time is 10-20 min;
the shaping operation is as follows: adding a preset anti-phenolic yellowing agent into a slurry tank of a preset forming machine, wherein the dosage is 10-35 g/L; so as to block the amino groups on the surface of the fabric embryo and prevent the fabric embryo from being oxidized at high temperature when passing through the oven of the pre-shaping machine.
In the above method, in step 5), a water washing step is performed before the shaping step: the water washing temperature is 90-95 ℃.
In the present invention, room temperature is common knowledge in the art, and specifically, may be 10 to 30 ℃.
In the present invention, the room temperature is common knowledge of a person skilled in the art, and may be specifically 10 to 30 ℃.
The invention has the following beneficial effects:
1. the acid dyes are of different structures, have different molecular weights, and can be dyed in various modes to exert the advantages of the respective structures.
2. The dyeing process designs three-stage heating, so that different dyes and auxiliaries can fully enter the interior of the nylon 66 molecule; wherein, the temperature is raised to 45 ℃ at the speed of 0.5-1.2 ℃/min, the temperature is the initial temperature of the glass transition temperature of the nylon 66, the color absorption and the coloring are fast, and the color absorption is kept for 5-15 min, so that the nylon is fully absorbed; then, heating to 70 ℃ at a speed of 0.5-1.2 ℃/min, wherein the temperature is the end temperature of the glass transition temperature of the nylon 66, the color absorption and the coloring are fast, and the color absorption is kept for 10-15 min, so that the color absorption is fully carried out; finally, heating up to 110 ℃ at a speed of 0.5-1.2 ℃/min, maintaining for 20-30 min, and finally cooling down at a speed of 0.5-1.5 ℃/min; can be dyed more firmly.
3. The invention comprises a complete dyeing process: pretreatment, dyeing, fixation, soaping and shaping. The process can endow the nylon 66 fabric with better color fastness, and the method has the advantages that in the dyeing stage, the small bath ratio of the dye liquor is 1:10, the water consumption is less, and the requirements of energy conservation and emission reduction are met.
Detailed Description
The experimental methods used in the following examples are conventional methods unless otherwise specified.
Materials, reagents and the like used in the examples described below are commercially available unless otherwise specified.
The invention provides a dyeing formula used in a dyeing method of high-strength nylon 66, which is shown in table 1:
TABLE 1
Example 1,
The dyeing process is as follows:
(1) Pretreatment (desizing, boiling and bleaching):
placing the fabric in a high-temperature oscillation dyeing machine for desizing, boiling and bleaching one-bath treatment, wherein the pretreatment liquid comprises the following formula: degreasing agent DM-1119N:3g/L, high concentration refining agent DM-1306H:2g/L, high-concentration desizing agent DM-1322H:2g/L, sodium hydroxide: 12g/L, H 2 O 2 (30%): 8G/L, hydrogen peroxide stabilizer TF-122G:1g/L, the temperature is 100 ℃, and the treatment time is 60min.
(2) Dyeing:
(1) soft water was used with a bath ratio of 1:10, preparing dye liquor (acid blue N-GL and acid blue R) at room temperature (25 ℃), regulating pH to 4.5-5.5 by glacial acetic acid, adding a fabric deepening agent, and dyeing;
(2) firstly, the temperature is raised at the speed of 1 ℃/min to 60 ℃, and at the moment, the temperature is the initial temperature of the glass transition temperature of the nylon 66, the color absorption and the coloring are fast, and the temperature is kept at 60 ℃ for 15min, so that the nylon is fully absorbed. Then, the temperature is raised to 90 ℃ at the speed of 1 ℃/min, the temperature is the end temperature of the glass transition temperature of the nylon 66, the color absorption and the coloring are fast, the temperature is kept at 90 ℃ for 30min, the color absorption and the leveling are carried out fully, finally, the temperature is raised to 120 ℃ at the speed of 1 ℃/min, and the temperature is kept at 120 ℃ for 30min. After dyeing, the mixture was cooled to room temperature (25 ℃ C.) at a rate of 1 ℃ C./min.
(3) And (3) soaping:
and 3g/L of the dye fastness enhancing soaping agent NJ-50 is added into the fabric dyed, dried and washed in the step 2), the water temperature is increased by 50 ℃, soaping is carried out for 15min, and then the fabric is washed.
(4) Fixation:
soft water is adopted for the fabric after soaping, and the fabric is added into an acid dye fixing agent AF-100 solution; then heating from room temperature at the speed of 2 ℃/min to 80 ℃, maintaining for 10-15 min, finally cooling at the speed of 2 ℃/min, cooling to room temperature, and washing with water.
(5) Shaping:
and adding a pre-sizing anti-phenolic yellowing agent 8191F into a slurry tank of the pre-sizing machine, wherein the dosage is 25g/L, so that the amino on the surface of the nylon 66 fabric embryo cloth is prevented from being oxidized at a high temperature when passing through a baking oven of the pre-sizing machine, and the sizing temperature is 110 ℃ and the sizing time is 15min.
Comparative example 1,
The method and conditions are the same as those of the experiment, except that the dye used in the dyeing treatment is the same anthraquinone (acid blue N-GL) acid dye.
Comparative example 2,
The method and conditions are the same as those of the experiment, except that a section of temperature rising type is designed in the dyeing process: (1) soft water was used with a bath ratio of 1:10, preparing dye liquor (acid blue R) at room temperature, regulating the pH to 4.5-5.5 by glacial acetic acid, adding a fabric deepening agent, and dyeing;
(2) firstly, heating up to 110 ℃ at a speed of 1 ℃/min, and finally cooling down to room temperature at a speed of 1 ℃/min.
The results of the above experiments are shown in Table 1. As shown by the results in the table 1, compared with the acid dye structure in the comparative example 1, the friction color fastness and the soaping color fastness of the acid dye structure are both obviously improved; compared with the one-stage heating dyeing treatment in the comparative example 2, the friction color fastness and the soaping color fastness of the obtained fabric are obviously improved.
Table 1 measurement of plant Properties after dyeing of examples and comparative examples of high-strength chinlon 66
Claims (10)
1. A dyeing method of high-strength nylon 66 comprises the following steps:
1) Carrying out one bath pretreatment of desizing, boiling and bleaching on the fabric;
2) Dyeing the fabric treated in the step 1);
wherein the dye adopted in the dyeing is an acid dye;
3) Soaping the fabric dyed in the step 2);
4) Fixing the color of the fabric treated in the step 3), and drying;
5) And (3) shaping the fabric treated in the step (4) to obtain the acid dye-dyed high-strength nylon 66.
2. The method according to claim 1, wherein in the step 1), the pretreatment liquid used in the pretreatment of the desizing, scouring and bleaching one bath method is a mixture of sodium hydroxide, hydrogen peroxide, a hydrogen peroxide stabilizer, a refining agent, an oil removing agent and a desizing agent.
3. The method according to claim 2, wherein the one bath pretreatment temperature for desizing and scouring is 90-110 ℃ for 60-80 min.
4. A method according to any one of claims 1-3, characterized in that in step 2) the bath ratio of the fabric to the dyeing liquor is 1:10.
5. The method according to any one of claims 1 to 4, wherein in step 2), the dye is an acid dye of anthraquinone type and azo type structure;
the dyeing treatment process is as follows: preparing dye liquor from the dye by soft water, regulating the pH value to 4.5-5.5 by glacial acetic acid, and adding a fabric deepening agent for dyeing; in the dyeing process, the temperature is raised at the speed of 0.5-1.2 ℃/min, the temperature is raised to 50-60 ℃, and the temperature is kept at 50-60 ℃ for 5-15 min; then heating up to 80-90 ℃ at the speed of 0.5-1.2 ℃/min, and preserving heat for 15-30 min at 80-90 ℃; then heating up to 110-120 ℃ at a speed of 0.5-1.2 ℃/min, and preserving heat for 20-30 min at 110-120 ℃; finally, cooling to room temperature at a speed of 0.5-1.5 ℃/min.
6. The method according to any one of claims 1 to 5, wherein in step 3), the step of the soaping treatment is as follows: and 2) adding 2-3g/L of dyeing fastness enhancing soaping agent into the fabric dyed, dried and washed in the step 2), raising the water temperature to 45-55 ℃, soaping for 15-25 min, and washing the fabric.
7. The method according to any one of claims 1 to 6, characterized in that in step 4), the step of the fixation treatment is as follows: soft water is adopted, and 3-5 g/L of acid dye fixing agent is added; then heating from room temperature at a speed of 1-2 ℃/min to 75-85 ℃, maintaining at 75-85 ℃ for 10-15 min, cooling at a speed of 1-2 ℃/min, cooling to room temperature, and washing.
8. The method according to any one of claims 1 to 7, wherein in step 5), the setting temperature is 100 to 110 ℃ for 10 to 20 minutes;
the shaping operation is as follows: and adding a preset anti-phenolic yellowing agent into a slurry tank of a preset forming machine, wherein the dosage is 10-35 g/L.
9. The method according to claim 8, wherein in step 5), a water washing step is performed before the shaping step: the water washing temperature is 90-95 ℃.
10. The method according to claim 8 or 9, wherein in step 4), the temperature of the drying is 110-130 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311729274.XA CN117758525A (en) | 2023-12-15 | 2023-12-15 | Dyeing method of high-strength nylon 66 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311729274.XA CN117758525A (en) | 2023-12-15 | 2023-12-15 | Dyeing method of high-strength nylon 66 |
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| CN202311729274.XA Pending CN117758525A (en) | 2023-12-15 | 2023-12-15 | Dyeing method of high-strength nylon 66 |
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