CN108486918B - Pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye - Google Patents
Pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye Download PDFInfo
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- CN108486918B CN108486918B CN201810220557.4A CN201810220557A CN108486918B CN 108486918 B CN108486918 B CN 108486918B CN 201810220557 A CN201810220557 A CN 201810220557A CN 108486918 B CN108486918 B CN 108486918B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/642—Compounds containing nitrogen
- D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
- D06P1/6495—Compounds containing carbonamide -RCON= (R=H or hydrocarbons)
- D06P1/6498—Compounds containing -CONCO-, e.g. phthalimides, hydantoine; Compounds containing RCONHSO2R (R=H or hydrocarbon)
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/24—Polyamides; Polyurethanes
- D06P3/248—Polyamides; Polyurethanes using reactive dyes
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Abstract
The invention discloses a pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye, which is carried out according to the following steps of 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide into water to prepare a pretreatment solution; step 2, putting a certain amount of aramid fiber into the pretreatment liquid obtained in the step 1, and carrying out pretreatment; the dyeing method can obviously improve the dyeing performance of the aramid fiber to the anionic dye, provides a new way for solving the problem of difficult dyeing of the aramid fiber and developing the dyeing of the aramid fiber anionic dye, realizes the normal-pressure dyeing of the aramid fiber at 100 ℃, reduces the dyeing temperature, the dyeing cost and the pollution, and promotes the development and the application of the aramid fiber product.
Description
Technical Field
The invention belongs to the technical field of textile printing and dyeing methods, and relates to a pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye.
Background
Aramid fiber is a synthetic polyamide fiber with aromatic rings, and the industrialized aramid fiber mainly comprises aramid fiber 1313 (poly (m-phenylene isophthalamide) fiber) and aramid fiber 1414 (poly (p-phenylene terephthalamide) fiber). The aramid fiber has excellent performances of high strength, high modulus, high temperature resistance, radiation resistance, electric insulation, flame retardance, good heat-humidity comfort, good chemical stability and the like. The aramid fiber material has wide application, can be applied to high-temperature filter materials, electrical appliance insulating materials, honeycomb structure materials, fireproof materials and the like, and can also be applied to special clothing materials, such as high-performance textiles with special purposes, such as space suits, fire uniforms, racing suits, oil field working suits and the like. Therefore, the aramid fiber dyeing products are more and more valued by people.
However, aramid is a linear macromolecule consisting of amide bonds interconnecting phenyl groups. The aramid fiber has the advantages that the structure of the aramid fiber macromolecule is very compact, a large number of amide groups and aromatic rings are contained in molecules, intermolecular hydrogen bonds are abundant, the cohesion is large, the fiber swelling is difficult, the crystallinity is high, the glass transition temperature of meta-aramid fiber is up to 270 ℃, the glass transition temperature of para-aramid fiber is up to 350 ℃, and the aramid fiber molecular structure does not contain water-soluble groups, so that the problems that the aramid fiber is difficult to dye, the color yield is low, and deep color is difficult to dye exist in the aramid fiber. And when the aramid fiber is dyed by adopting disperse dyes and cations, the dyeing temperature is up to 140 ℃, and the problems of large energy consumption, large pollution, high requirement on dyeing equipment and the like exist in high-temperature dyeing. In recent years, many dyeing and finishing workers have been dedicated to research on aramid carriers to improve the dyeing properties of aramid.
The prior method for improving the dyeing performance of aramid fiber mainly comprises the following steps: (1) the aramid fiber is dyed by adopting a stock solution dyeing method, but the aramid fiber is dyed by depending on a spinning stock solution method, so that the defects of relatively single color and inflexible production mode exist in the aramid fiber dyeing, and the wide application of the aramid fiber in the field of textile and clothing is limited; (2) the aramid fiber is pretreated by a polar solvent, for example, the aramid fiber is treated by a polar solvent dimethylacetamide (DMAc), the intermolecular force of the aramid fiber is weakened, the diameter and the specific surface area of the aramid fiber are increased, and the dyeing performance of the aramid fiber is improved, but a large amount of solvent is remained on the dyed aramid fiber, a large amount of water is needed to wash the aramid fiber to remove the remained solvent, and the solvent is difficult to recover; (3) adopt dyeing carriers such as acetophenone, benzyl alcohol to handle aramid fiber, the carrier can make aramid fiber plastify, reduces fibrous glass transition temperature, has good solubility to the dyestuff simultaneously, and then can promote the dyestuff to adsorb and the diffusion gets into inside the fibre. The aramid fiber bulked by the carrier is mainly dyed by cationic dye or disperse dye. However, the carrier generally has a peculiar smell, and the carrier remains on the fiber after dyeing, and a large amount of water must be used to remove the remaining carrier.
Disclosure of Invention
The invention aims to provide a pretreatment method capable of enhancing the dyeing performance of aramid fiber on anionic dye, which can obviously improve the dyeing performance of aramid fiber on anionic dye.
The technical scheme adopted by the invention is that a pretreatment method capable of enhancing the dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide into water to prepare a pretreatment solution;
and 2, putting a certain amount of aramid fiber into the pretreatment liquid obtained in the step 1 for pretreatment.
The invention is also characterized in that:
in the pretreatment solution, the concentration of N-N-butylphthalimide is 30g/L-50g/L, the concentration of cationic gelatin protein auxiliary agent is 10g/L-30g/L, and the concentration of sodium hydroxide is 4g/L-10 g/L.
The mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:10mL-30 mL; the soaking temperature is 70-100 ℃, and the soaking time is 40-70 min.
In the step 2, the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:5mL-25 mL; the soaking temperature is 70-80 ℃, the soaking time is 10-40 min, and the aramid fiber is fished out and steamed for 10-40 min after soaking.
The steaming temperature is 100-105 ℃.
The invention has the beneficial effects that:
according to the pretreatment method capable of enhancing the dyeing performance of the aramid fiber to the anionic dye, the aramid fiber pretreated by the method can be remarkably improved in the adsorption dyeing performance to the anionic dye, and a new way is provided for solving the problem that the aramid fiber is difficult to dye and the dyeing of the aramid fiber anionic dye is not developed; the dyeing method realizes the normal pressure boiling dyeing of the aramid fiber at 100 ℃, reduces the dyeing temperature, the dyeing cost and the pollution, and promotes the development and the application of the aramid fiber product.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 30g/L-50g/L, the concentration of cationic gelatin protein auxiliary agent is 10g/L-30g/L, and the concentration of sodium hydroxide is 4g/L-10 g/L;
step 2, putting aramid fiber into the pretreatment liquid prepared in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:10mL-30mL, and soaking the aramid fiber at the temperature of 70-100 ℃ for 40min-70 min;
or putting aramid fiber into the pretreatment liquid obtained in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:5mL-25mL, and soaking the aramid fiber at the temperature of 70-80 ℃ for 20-40 min; after soaking, the aramid fiber is fished out and steamed for 10min to 40min at the temperature of 100 ℃ to 105 ℃.
The N-N-butylphthalimide can effectively puff and plasticize aramid fibers, the glass transition temperature of the aramid fibers is reduced, the amorphous area gap of the fibers is enlarged, a cationic gelatin protein auxiliary agent is easy to enter the fibers and is combined with a small amount of anionic groups on the fibers by electrostatic attraction, a polyamide structure is arranged on the cationic gelatin protein auxiliary agent, a polyamide structure is also arranged on the aramid fiber structure, van der Waals force and hydrogen bond acting force are also arranged between the cationic gelatin protein auxiliary agent and the aramid fibers, and simultaneously, an ethylene oxide active group on the cationic gelatin protein auxiliary agent can chemically react with amino groups on the aramid fibers under the catalytic action of sodium hydroxide, so that a small amount of covalent bonds are combined between the cationic gelatin protein auxiliary agent and the fibers, and finally, the aramid fibers obtain good puffing and cationization modification effects, effectively enhancing the dyeing performance of the aramid fiber to the anionic dye, not only improving the adsorption dyeing speed of the anionic dye, but also improving the diffusion rate of the dye to the interior of the aramid fiber and obviously improving the dyeing depth value of the dyed fabric.
Example 1
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 30g/L, the concentration of cationic gelatin protein auxiliary agent is 10g/L, and the concentration of sodium hydroxide is 4 g/L;
and 2, putting aramid fiber into the pretreatment liquid prepared in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:10mL, and soaking the aramid fiber at 70 ℃ for 40 min.
Example 2
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of the N-N-butylphthalimide is 50g/L, the concentration of the cationic gelatin protein auxiliary agent is 30g/L, and the concentration of the sodium hydroxide is 10 g/L.
And 2, putting aramid fiber into the pretreatment liquid obtained in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:30mL, and soaking the aramid fiber at 100 ℃ for 70 min.
Example 3
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 40g/L, the concentration of cationic gelatin protein auxiliary agent is 20g/L, and the concentration of sodium hydroxide is 7 g/L;
step 2, putting aramid fiber into the pretreatment liquid prepared in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:20mL, and soaking the aramid fiber at 80 ℃ for 55 min;
example 4
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 35g/L, the concentration of cationic gelatin protein auxiliary agent is 15g/L, and the concentration of sodium hydroxide is 5 g/L;
and 2, putting aramid fiber into the pretreatment liquid obtained in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:15mL, and soaking the aramid fiber at 78 ℃ for 45 min.
Example 5
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 45g/L, the concentration of cationic gelatin protein auxiliary agent is 25g/L, and the concentration of sodium hydroxide is 8.5 g/L;
step 2, putting aramid fiber into the pretreatment liquid prepared in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:25mL, and soaking the aramid fiber at 95 ℃ for 65 min;
example 6
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 30g/L, the concentration of cationic gelatin protein auxiliary agent is 10g/L, and the concentration of sodium hydroxide is 4 g/L;
putting aramid fiber into the pretreatment liquid obtained in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:5mL, soaking the aramid fiber at 80 ℃ for 40min, and then fishing out the aramid fiber and steaming the aramid fiber at 105 ℃ for 20 min.
Example 7
A pretreatment method capable of enhancing dyeing performance of aramid fiber on anionic dye is carried out according to the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 50g/L, the concentration of cationic gelatin protein auxiliary agent is 30g/L, and the concentration of sodium hydroxide is 10 g/L;
putting aramid fiber into the pretreatment liquid obtained in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:10mL, soaking the aramid fiber at 80 ℃ for 30min, and then fishing out the aramid fiber and steaming the aramid fiber at 100 ℃ for 30 min.
Example 8
Step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 40g/L, the concentration of cationic gelatin protein auxiliary agent is 20g/L, and the concentration of sodium hydroxide is 8 g/L;
and 2, putting aramid fiber into the pretreatment liquid obtained in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:15mL, soaking the aramid fiber at 75 ℃ for 20min, and fishing out the aramid fiber and steaming the aramid fiber at 103 ℃ for 40 min.
Example 9
Step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 32g/L, the concentration of cationic gelatin protein auxiliary agent is 18g/L, and the concentration of sodium hydroxide is 5 g/L;
putting aramid fiber into the pretreatment liquid obtained in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:13mL, soaking the aramid fiber at 73 ℃ for 25min, and then fishing out the aramid fiber and steaming the aramid fiber at 102 ℃ for 35 min.
Example 10
Step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide in water to prepare a pretreatment solution; wherein the concentration of N-N-butylphthalimide is 42g/L, the concentration of cationic gelatin protein auxiliary agent is 28g/L, and the concentration of sodium hydroxide is 9 g/L;
putting aramid fiber into the pretreatment liquid prepared in the step 1, wherein the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:16mL, soaking the aramid fiber at 78 ℃ for 15min, and then fishing out the aramid fiber and steaming at 104 ℃ for 38 min.
The pretreated aramid fibers and the non-pretreated aramid fibers of examples 3 and 8 were dyed with reactive dyes at 98 ℃ for 60min, and the results of the fabric dyeing depth K/S are shown in table 1.
TABLE 1 dyeing depth effect of different kinds of reactive dyes on different treated aramid fibers
As can be clearly seen from table 1, the dyeing depth of the aramid fiber pretreated in example 3 is increased by more than 6 times compared with the dyeing depth of the aramid fiber not pretreated, and the dyeing depth of the aramid fiber pretreated in example 8 is increased by more than 9 times compared with the dyeing depth of the aramid fiber not pretreated; experiments prove that the pretreatment method for enhancing the dyeing performance of aramid fiber to anionic dye can obviously improve the dyeing performance of aramid fiber to anionic dye; the improvement range of the dyeing depth of the aramid fiber in the embodiment 8 is obviously larger than that of the aramid fiber in the embodiment 3, compared with the pretreatment step of the aramid fiber in the embodiment 3, the step of steaming is added in the pretreatment step of the aramid fiber in the embodiment 8, which shows that the steaming step is added in the pretreatment process, and the effect of enhancing the dyeing performance of the anionic dye of the aramid fiber is better.
The pretreated aramid fiber and the non-pretreated aramid fiber are dyed for 60min by adopting different types of anion active dyes at 100 ℃, 110 ℃, 120 ℃ and 130 ℃ respectively, and the dyeing depth K/S results of the fabric are shown in tables 2, 3 and 4 respectively.
TABLE 2 dyeing depth values of reactive brilliant red K-2G dyes for dyeing different treated aramids at different temperatures
TABLE 3 dyeing depth values of reactive yellow K-6G dye for dyeing different treated aramid fibers at different temperatures
TABLE 4 dyeing depth values of reactive turquoise blue KNG dye for dyeing different treated aramid fibers at different temperatures
As shown in tables 2, 3 and 4, when the aramid fiber is dyed by using the anionic reactive dye, the dyeing temperature is not higher, the dyeing depth of the aramid fiber is larger, the reactive dye is hydrolyzed due to too high dyeing temperature, the water solubility of the dye is increased, the dye structure is damaged, the adsorption dyeing of the dye is not facilitated, and the K/S value of the dyed fabric is reduced, so that the aramid fiber fabric is dyed by using the reactive dye, and the dyeing temperature cannot be higher than 110 ℃; the experimental data also show that the untreated aramid fiber fabric is dyed by three reactive dyes at 100 ℃, 110 ℃, 120 ℃ and 130 ℃ for 60min, the fabric dyeing depth K/S is very low, and the K/S value of the dyeing depth of most samples is less than 1, which indicates that the untreated aramid fiber fabric cannot be dyed by the anionic reactive dyes. Compared with the dyeing depth of untreated aramid, the dyeing depth K/S value of the pretreated aramid is obviously improved, and the pretreatment process of soaking for a certain time and then steaming for a certain time is found, so that the swelling modification effect of the aramid is better, the dyeing depth of the fabric is improved greatly, and the swelling modification pretreatment method can obviously improve the dyeing performance of the aramid on anionic dye, the dye adsorption capacity is obviously improved, the dyeing depth K/S value of the fabric is obviously improved, so that the aramid can be dyed by the anionic dye, and the range of the dye for dyeing the aramid is expanded. It can be seen from tables 2, 3 and 4 that the dyeing depth of the pretreated aramid fiber at 100 ℃ is significantly improved compared to that of the untreated fabric, indicating that the aramid fiber pretreated according to the method of the present invention can be dyed at 100 ℃ under normal pressure.
The pretreatment method capable of enhancing the dyeing performance of the aramid fiber on the anionic dye can remarkably enhance the adsorption dyeing performance of the aramid fiber on the anionic dye, realize the atmospheric boiling dyeing of the aramid fiber, and open up a new way for dyeing the aramid fiber anionic dye; the dyeing temperature is reduced, the dyeing cost and pollution are reduced, and the development and application of aramid fiber products are promoted.
Claims (2)
1. A pretreatment method capable of enhancing dyeing performance of aramid on anionic dye is characterized by comprising the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide into water to prepare a pretreatment solution; in the pretreatment solution, the concentration of N-N-butylphthalimide is 30g/L-50g/L, the concentration of a cationic gelatin protein auxiliary agent is 10g/L-30g/L, and the concentration of sodium hydroxide is 4g/L-10 g/L;
step 2, putting a certain amount of aramid fiber into the pretreatment liquid obtained in the step 1, and carrying out pretreatment;
the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:10mL-30 mL; the soaking temperature is 70-100 ℃, and the soaking time is 40-70 min.
2. A pretreatment method capable of enhancing dyeing performance of aramid on anionic dye is characterized by comprising the following steps:
step 1, preparing pretreatment liquid: dissolving N-N-butylphthalimide, a cationic gelatin protein auxiliary agent and sodium hydroxide into water to prepare a pretreatment solution; in the pretreatment solution, the concentration of N-N-butylphthalimide is 30g/L-50g/L, the concentration of a cationic gelatin protein auxiliary agent is 10g/L-30g/L, and the concentration of sodium hydroxide is 4g/L-10 g/L;
step 2, putting a certain amount of aramid fiber into the pretreatment liquid obtained in the step 1, and carrying out pretreatment;
the mass volume ratio of the aramid fiber to the pretreatment liquid is 1g:5mL-25 mL; soaking at 70-80 deg.C for 10-40 min, and steaming aramid fiber for 10-40 min; the steaming temperature is 100-105 ℃.
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| CN110130120A (en) * | 2019-04-12 | 2019-08-16 | 武汉纺织大学 | A method of for high-performance textile low temperature dyeing |
| CN112359614A (en) * | 2020-10-12 | 2021-02-12 | 蓝星（成都）新材料有限公司 | Dyeing method of aramid 1414 fibers |
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