CN110306313B - Method for improving light fastness of flame-retardant knitted fabric - Google Patents
Method for improving light fastness of flame-retardant knitted fabric Download PDFInfo
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- CN110306313B CN110306313B CN201910632244.4A CN201910632244A CN110306313B CN 110306313 B CN110306313 B CN 110306313B CN 201910632244 A CN201910632244 A CN 201910632244A CN 110306313 B CN110306313 B CN 110306313B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
- D06B3/18—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B9/00—Solvent-treatment of textile materials
- D06B9/02—Solvent-treatment of textile materials solvent-dyeing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B9/00—Solvent-treatment of textile materials
- D06B9/04—Successively applying two or more different solvent-based treating materials
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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
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Coloring (AREA)
Abstract
The invention provides a method for improving the light fastness of a flame-retardant knitted fabric, which effectively solves the problems of low light fastness and severe fading of the traditional flame-retardant knitted fabric. The method comprises the following steps: step one, dyeing; dyeing the knitted fabric to be light; step two, flame retardant finishing; performing flame-retardant finishing on the knitted fabric in the first step according to a normal process, so that the knitted fabric has fireproof and flame-retardant functions; step three, padding and rolling; padding and rolling the knitted fabric subjected to flame-retardant finishing in the step two by using a reactive dye, a penetrating agent and a dyeing catalyst; step four, stacking; step five, washing with water; feeding the flame-retardant knitted fabric piled for a sufficient time in the fourth step into an overflow dyeing machine for washing, washing off redundant dye and auxiliary agent, and enabling the fabric of the flame-retardant knitted fabric to retract; step six, shaping and drying; step seven, padding again; padding the flame-retardant knitted fabric which is shaped and dried in the sixth step with an aldehyde-free color fixing agent; the fastness is further increased; step eight, testing and comparing; the method has obvious effect.
Description
Technical Field
The invention relates to the technical field of knitted fabric solarization, in particular to a method for improving the solarization fastness of a flame-retardant knitted fabric.
Background
The knitted product dyed by the reactive dye has an excellent fireproof function after flame-retardant finishing, and the application field of the knitted fabric is greatly improved. But because of the existence of the flame retardant on the fiber, the reactive dye changes from the structure, and the phenomena of chemical bond breakage, color change and fading of the reactive dye under the action of illumination are aggravated, so that the light fastness of the flame-retardant knitted fabric becomes very low. The color of the fabric can be seriously faded only by slight illumination, and particularly for products such as coats and undershirts, the wearing environment of the fabric is poor, the fabric is exposed to sunlight, and the sun exposure requirement is higher.
The light fastness of the dyed knitted fabric is generally between 3-4 levels of national standard, the light fastness of the flame-retardant knitted fabric is reduced to 1-2 levels (the light fastness of the national standard is 8 levels, and the level 1 is the worst), the appearance is old, the color is different locally, and the knitted fabric can not be worn and taken normally almost.
After the conventional light fastness improving agent is adopted for finishing, the improvement and the improvement are not seen, because the light fastness improving agent can effectively protect and slow down the fading phenomenon of a broken bond of a reactive dye of the dyed cloth under illumination. But the protection is lost due to the presence of flame retardants on the fibers, and eventually still severely discolored.
Thus, the present invention provides a new method of light fastness to solve this problem.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a method for improving the light fastness of a flame-retardant knitted fabric, which effectively solves the problems of low light fastness and severe fading of the traditional flame-retardant knitted fabric.
The method for improving the light fastness of the flame-retardant knitted fabric is characterized by comprising the following steps of:
step one, dyeing; dyeing the knitted fabric to be light, and dyeing the depth to be light by 2% -5%;
step two, flame retardant finishing; performing flame-retardant finishing on the knitted fabric in the first step according to a normal process, so that the knitted fabric has fireproof and flame-retardant functions;
step three, padding and rolling; padding and rolling the knitted fabric subjected to flame-retardant finishing in the step two by using a reactive dye, a penetrating agent and a dyeing catalyst;
step four, stacking;
step five, washing with water; feeding the flame-retardant knitted fabric piled for a sufficient time in the fourth step into an overflow dyeing machine for washing, washing off redundant dye and auxiliary agent, and enabling the fabric of the flame-retardant knitted fabric to retract;
step six, shaping and drying;
step seven, padding again; padding the flame-retardant knitted fabric which is shaped and dried in the sixth step with an aldehyde-free color fixing agent; the fastness is further increased;
step eight, testing and comparing; and testing the flame-retardant knitted fabric subjected to solarization and lifting according to the steps, and comparing the test result with the flame-retardant knitted fabric which is not subjected to solarization and lifting.
Preferably, the depth dyeing of the knitted fabric in the step one is performed on an overflow dyeing machine, the dyeing depth is controlled to be 2% -5% shallow, namely, the dyeing depth is equally divided into 100 parts, the dyeing depth is 95-98 parts, and the rest 2-5 parts is not dyed temporarily.
Preferably, the flame retardant finishing in the second step is performed on a knitting forming machine, and the color depth of the knitted fabric is correspondingly lightened along with the first step.
Preferably, the third step is completed on a padder and a cold batch dyeing machine, so that the flame-retardant finished knitted fabric is subjected to cold batch dyeing.
Preferably, the fourth step is to store the flame-retardant knitted fabric rolled in the third step at a temperature of 23-28 ℃, operate and stack for 8-12 hours, so that the dye in the third step is sufficiently dyed and permeates into the fiber.
Preferably, the water washing in the fifth step is loose water washing by using an overflow dyeing machine.
Preferably, the sixth step is drying and tentering, and is completed on a knitting and shaping machine.
Preferably, the formaldehyde-free color fixing agent in the seventh step is 15-20g/l, and the operation mode is one-dipping one-rolling and drying.
By adopting the method provided by the invention, the light fastness of the knitted fabric which is flame-retardant with a coat can be improved from 1-2 level to 1.5-2.5 level, the knitted fabric which is flame-retardant is padded with the active dye, the penetrating agent and the dyeing catalyst, the knitted fabric is piled up for a long time through low-temperature rolling, and then enters an overflow machine for loose washing, and then is dried and padded with the formaldehyde-free fixing agent to further fix the dye on the fiber, so that the light fastness of the knitted fabric which is flame-retardant can be improved by 0.5-1 level, and the method has obvious effect.
Detailed Description
The invention relates to a method for improving light fastness of flame-retardant knitted fabric, which mainly comprises the following steps:
step one, dyeing; dyeing the knitted fabric to be light; when the knitted fabric is dyed, the dyeing depth is preferably 2-5% lower, namely, the dyeing depth is only 95-98% of the preset depth. Dyeing is carried out in an overflow dyeing machine, and the dyeing process comprises the following steps: active red DES, active golden DES, anhydrous sodium sulphate and soda ash. Uniformly dissolving the dye with 60 ℃ hot water for 15 minutes, feeding the dye into an overflow machine, sequentially adding anhydrous sodium sulphate and sodium carbonate into the overflow machine for 3 times respectively, dyeing the dye for 60 minutes at the temperature of 60 ℃ according to the temperature of 0 and 8 ℃ per minute, and washing the dye clean.
Step two, flame retardant finishing; and (3) performing flame-retardant finishing on the knitted fabric in the first step according to a normal process, so that the flame-retardant knitted fabric achieves the fireproof and flame-retardant functions required by the national standard. And at the moment, the color depth after flame-retardant finishing is correspondingly 2-5% lighter in the first step, so that a space is reserved for the reactive dye complementary dyeing in the subsequent steps.
The normal treatment process comprises the following steps: padding a fire retardant into the knitting and setting machine and drying the fire retardant → ammonia fumigation of an ammonia fumigation instrument → oxidation and water washing of an overflow machine → drying of the knitting and setting machine. The dosage of the flame retardant is as follows: 8-18 Baume degree. The ammonia fumigation speed is 5-20 m/min. 50 g/L of hydrogen peroxide is oxidized at room temperature.
Step three, padding and rolling; padding the knitted fabric subjected to flame-retardant finishing in the step two with a mixed solution of reactive dye, penetrant and reactive dyeing catalyst on a uniform padder, and then rolling the knitted fabric into a roll by using a rolling machine. Namely the knitted fabric is dyed in a cold batch after flame retardance.
The process comprises the following steps:
1. padding dye: adding reactive dye, reactive red, 2BF, reactive yellow 3RS, non-ionic penetrant and reactive dyeing catalyst LS-5 into a material dissolving tank in sequence, and dissolving with 40-50 ℃ warm water; preparing a dye solution and an active dyeing catalyst solution in a ratio of 4: 1, and uniformly rolling, namely soaking and rolling. The amount of padding dye used is controlled and the color of the sample is determined by the customer's needs. The materials are determined by punching small samples, and the final color light and depth meet the requirements of the samples.
2. And rolling in time after padding. The rolling and the rolling are linked and finished on a cold batch dyeing machine, and the rolled material is directly rolled.
Step four, stacking; connecting the knitted fabric which is rolled in the third step to a speed changing transmission box by a triangular belt, and operating and piling for 8-12 hours at the temperature of 23-28 ℃ to ensure that the dye is fully dyed and permeates into the fiber.
Step five, washing with water; loosely washing the dyed flame-retardant knitted fabric in the fourth step by using an overflow dyeing machine; after the steps are completed, the knitted fabric is subjected to drafting and tension, and internal stress is formed. The fabric needs to be fully shrunk under the loose condition to eliminate the internal stress so as to ensure the qualified shrinkage rate, and residual dye, penetrant and catalyst need to be washed off in order to clean the fabric surface. The process employs a jar of water flushed with cold water and allowed to contract for 30 minutes using hot water at 80 ℃.
Step six, drying and tentering; and drying and tentering the washed flame-retardant knitted fabric on a knitting and setting machine.
Step seven, padding again; padding the flame-retardant knitted fabric subjected to drying and tentering in the sixth step on a knitting forming machine with an aldehyde-free color fixing agent; the formaldehyde-free color fixing agent is 15-20g/l, and the operation mode is one-dipping one-rolling and drying, so that the dye is further fixed.
Step eight, testing and comparing; and testing the flame-retardant knitted fabric subjected to solarization and lifting, comparing the test result with the flame-retardant knitted fabric subjected to solarization and lifting, and continuously irradiating for 20 hours by using a national standard hernia lamp (a hernia lamp is a known term) to score the test color fastness to solarization by using a computer. And scoring again.
The specific implementation method comprises the following steps: 16S large red single jersey;
firstly, dyeing process of an overflow machine: 150 kg/jar;
dyeing prescription:
active red DES 6.6;
active golden yellow DES 3;
anti-wrinkle agent 4 (OWF);
50 g/L of anhydrous sodium sulphate;
20g/L of soda ash;
water quantity: 2200 liters;
the operation is as follows: the dye is dissolved by 50 ℃ warm water and is poured into an overflow machine for 15 minutes, the operation is carried out for 10 minutes, the feeding is carried out for 3 times, the dissolved anhydrous sodium sulphate is respectively operated for 10 minutes, the feeding is carried out for 3 times, the dissolved sodium carbonate is respectively operated for 10 minutes, the operation is carried out for 0 minute, the temperature is increased to 60 ℃ for 60 minutes at each time, and finally the water is washed clean.
Secondly, shaping and drying: the temperature is 150 ℃, and the vehicle speed is 15 m/min;
thirdly, padding a flame retardant by a setting machine, wherein the dosage of the flame retardant is as follows: 8-18 Baume degrees, and soaking and rolling at room temperature.
Fourthly, ammonia fumigation: the vehicle speed is 5-20 m/min, and the ammonia flow is 80 square/h.
Fifthly, an overflow machine oxidation process: 50 g/L of hydrogen peroxide, and the oxidation time is as follows: for 30 minutes.
Sixthly, drying by the setting machine, wherein the temperature is 150 ℃, and the vehicle speed is 15 m/min.
And seventhly, rolling the rolling materials by using a cold dyeing machine.
Reactive red 2BF 6.5;
active yellow 3RS 3.2;
10 g/L of penetrant;
active dye catalyst LS-530 g/l.
Melting materials with 50 ℃ of hot water, respectively melting dye liquor and catalyst liquor, and mixing the materials according to the ratio of 4: 1, and mixing and using.
One dipping and one rolling, and rolling in a linkage manner.
Eighthly, stacking, keeping the temperature at 23-28 ℃, and slowly operating for 10 hours.
And ninthly, washing by an overflow machine, washing by cold water in a jar for 30 minutes at 80 ℃, neutralizing the pH value of the ice vinegar at 40 ℃, and discharging by cold water.
Tenthly, drying temperature of the setting machine is 150 ℃, and vehicle speed is 15 m/min.
Eleven, rolling a color fixing agent by a setting machine:
an aldehyde-free fixing agent; xinkegu LV-08815-20 g/L;
one step of dipping and one step of rolling;
twelfth, drying the forming machine by 150 ℃;
15 m/min;
comparison table of 20-hour sun exposure rating of flame-retardant knitted fabric hernia lamps with red single jersey:
| color cloth | Flame-retardant cloth | After being sunned and lifted | |
| Color-changing computer scoring | 3.84 | 2.17 | 2.84 |
| Color change rating | 4 | 2 | 3 |
By adopting the method provided by the invention, the light fastness of the knitted fabric which is flame-retardant with a coat can be improved from 1-2 level to 1.5-2.5 level, the knitted fabric which is flame-retardant is padded with the active dye, the penetrating agent and the dyeing catalyst, the knitted fabric is piled up for a long time through low-temperature rolling, and then enters an overflow machine for loose washing, and then is dried and padded with the formaldehyde-free fixing agent to further fix the dye on the fiber, so that the light fastness of the knitted fabric which is flame-retardant can be improved by 0.5-1 level, and the method has obvious effect.
Claims (7)
1. The method for improving the light fastness of the flame-retardant knitted fabric is characterized by comprising the following steps of:
step one, dyeing; dyeing the knitted fabric to be light, and dyeing the depth to be light by 2-5%;
step two, flame retardant finishing; performing flame-retardant finishing on the knitted fabric in the first step according to a normal process, so that the knitted fabric has fireproof and flame-retardant functions;
step three, padding and rolling; padding and rolling the knitted fabric subjected to flame-retardant finishing in the step two by using an active dye, a penetrating agent and a dyeing catalyst;
step four, stacking; storing the flame-retardant knitted fabric rolled in the third step at the temperature of 23-28 ℃, operating and piling for 8-12 hours to ensure that the dye in the third step is fully dyed and permeates into the fiber;
step five, washing with water; feeding the flame-retardant knitted fabric piled for a sufficient time in the fourth step into an overflow dyeing machine for washing, washing off redundant dye and auxiliary agent, and enabling the fabric of the flame-retardant knitted fabric to retract;
step six, shaping and drying;
step seven, padding again; padding the flame-retardant knitted fabric which is shaped and dried in the sixth step with an aldehyde-free color fixing agent; the fastness is further increased;
step eight, testing and comparing; and testing the flame-retardant knitted fabric subjected to solarization and lifting according to the steps, and comparing the test result with the flame-retardant knitted fabric which is not subjected to solarization and lifting.
2. The method for improving the light fastness of the flame-retardant knitted fabric according to claim 1, wherein the step one, dyeing the knitted fabric to light depth, is performed on an overflow dyeing machine, the dyeing depth is controlled to be 2% -5%, namely, the dyeing depth is equally divided into 100 parts, the dyeing depth is 95 parts to 98 parts, and the rest 2 parts to 5 parts is not dyed temporarily.
3. The method for improving the light fastness of the flame-retardant knitted fabric according to claim 1, wherein the flame-retardant finishing in the second step is performed on a knitting and setting machine, and the color depth of the knitted fabric is correspondingly lighter in the first step.
4. The method for improving the light fastness of the flame-retardant knitted fabric according to claim 1, wherein the third step is performed on a padder and a cold-batch dyeing machine, so that the flame-retardant finished knitted fabric is subjected to cold-batch dyeing.
5. The method for improving the light fastness of the flame-retardant knitted fabric according to claim 1, wherein the washing in the fifth step is loose washing by using an overflow dyeing machine.
6. The method for improving the light fastness of the flame retardant knitted fabric according to the claim 1, wherein the sixth step is drying and tentering, which is completed on a knitting and setting machine.
7. The method for improving the light fastness of the flame-retardant knitted fabric according to claim 1, wherein the formaldehyde-free fixing agent in the seventh step is 15-20g/L, and the operation mode is one-dip-one-roll and drying.
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| JPH10131062A (en) * | 1996-10-31 | 1998-05-19 | Nikka Chem Co Ltd | Dye-fixing agent |
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| CN103031712A (en) * | 2012-12-21 | 2013-04-10 | 江南大学 | Method for improving color fastness to light of fabric dyed by active dye |
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