CN105178062A - Dyeing process for acidic fluorescent dye - Google Patents
Dyeing process for acidic fluorescent dye Download PDFInfo
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- CN105178062A CN105178062A CN201510672355.XA CN201510672355A CN105178062A CN 105178062 A CN105178062 A CN 105178062A CN 201510672355 A CN201510672355 A CN 201510672355A CN 105178062 A CN105178062 A CN 105178062A
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Abstract
The invention discloses a dyeing process for an acidic fluorescent dye. The dyeing process comprises a dyeing process, namely sequentially adding a dyeing aid and an acidic fluorescent dye to a fabric to be dyed, and carrying out dip dyeing at 30 to 40 DEG C; besides, heating and dyeing the fabric subjected to the dip dyeing by using a dyeing solution consisting of the dyeing aid and the acidic fluorescent dye; the dyeing aid comprises an organic acid-releasing agent and is used for continuously adjusting the pH value of the dyeing solution to 4 to 4.5. According to the dyeing process disclosed by the invention, the organic acid-releasing agent is added at 40 DEG C and then releases acid slowly with temperature rise, and the pH of the dyeing solution is changed to 4 to 4.5 slowly from the original 6 to 7.5, so that the uptake rate of dyeing a nylon fabric with the acid fluorescent dye can be slowed, and the uptake rate of the acidic fluorescent dye in the whole temperature-rise dyeing process is kept consistent, and the nonuniformity in dyeing is effectively avoided, and therefore the reproducibility of a dyed color is improved.
Description
Technical field
The invention belongs to technical field of textile printing, be specifically related to a kind of dyeing of acid fluorescent dye.
Background technology
Be fashion brand or all more and more diversification of style fashionable dress, wherein iridescent became more and more popular in recent years, and particularly underwear, swimming suit fabric color are more and more gorgeous.
Quick and precisely improve large reappearance of producing dyeing, dyeing once success rate can be improved, effectively reduce production cost, improve the competitiveness of enterprise.The reproducibility of current acid fluorescence material dye nylon fabric in large-scale production process is generally poor, and the key controlling reproducibility controls dyeing pH value, dyeing, aftertreatment technology.Dyeing aspect is because in large production, staining reaction condition is than stronger, and dye-uptake, the stability of dyestuff are inconsistent, and the post processing degree varies that fades causes, and causes producing greatly color reproducibility very poor.
Summary of the invention
The object of the present invention is to provide a kind of dyeing of acid fluorescent dye, the reappearance of large production color can be improved by this dyeing.
For reaching this object, the present invention by the following technical solutions:
The invention provides a kind of dyeing of acid fluorescent dye, comprise staining procedure: to until in dyeing and weaving thing by adding dyeing assistant and acid fluorescent dye after arriving first to contaminate at 30 ~ 40 DEG C; And, heat up to through contaminate fabric use the dye liquor be made up of described dyeing assistant and described acid fluorescent dye to dye; Described dyeing assistant comprises organic acid-releasing agent, in order to the pH value of described dye liquor is adjusted to 4 ~ 4.5 continuously.
In the present invention, described " fabric " comprises nylon fabrics (polyamide fibre+spandex) and other applicable fabrics adopting acid fluorescent dyeing.The pH value of nylon fabrics when its isoelectric point is about 6, and therefore just the pH value of dye dye liquor remains between 6 ~ 7.5, can improve level-dyeing property and aberration stability.The dye liquor just contaminated before dye liquor refers to intensification of the present invention, the organic acid-releasing agent now added can not change the pH of dye liquor 30 ~ 40 DEG C time, but slowly release acid along with the rising of temperature, the pH of dye liquor is made slowly to change 4 ~ 4.5 into from 6 ~ 7.5, the speed acid fluorescent dye contaminating nylon fabrics can be slowed down, the dye-uptake of fluorescence ACID DYES in whole intensification dyeing course is consistent substantially, effectively avoids dyeing uneven, thus improve the reappearance of the color contaminated.According to the pH adjusting agent of traditional acetic acid as dye liquor, the aberration dyeing the color come is very large, and color reproducibility is poor, is difficult to meet customer requirement.
Above-mentioned acid fluorescent dye comprises the acid fluorescent dye of Nylosan of Clariant chemical industry, specifically comprise red and other ACID DYES colorant match of NylosanE8G1 Huang, NylosanB etc., dye type and consumption thereof are determined according to concrete color, and the color according to required dye can formulate corresponding formula by artificial toning or Datacolor colour matching instrument.Above-mentioned organic acid-releasing agent comprises various commercially available organic acid-releasing agent.
In the present invention, take dye liquor as 1L, described dyeing assistant comprises 0.5 ~ 1.5g softener, the organic acid-releasing agent of 0.1 ~ 1g and 1 ~ 2g levelling agent.In staining procedure of the present invention, the mixing of water, dyeing assistant and acid fluorescent dye is dye liquor.The content of above-mentioned softener in dye liquor is 0.5 ~ 1.5g/L, such as 0.5g/L, 0.6g/L, 0.7g/L, 0.8g/L, 0.9g/L, 1g/L, 1.1g/L, 1.2g/L, 1.3g/L, 1.4g/L, 1.5g/L, is preferably 1g/L; Softener of the present invention is wetting softener, and the effect of wetting softener is the friction factor reducing fabric and equipment, thus reduces the generation of fabric scratch and wrinkle trace.The content of above-mentioned organic acid-releasing agent in dye liquor is 0.1 ~ 1g/L, such as 0.1g/L, 0.2g/L, 0.3g/L, 0.4g/L, 0.5g/L, 0.6g/L, 0.7g/L, 0.8g/L, 0.9g/L, 1g/L, be preferably 0.3 ~ 1g/L, concrete consumption is determined according to the content of added acid fluorescent dye.The content of above-mentioned levelling agent in dye liquor is 1 ~ 2g/L, such as 1g/L, 1.2g/L, 1.4g/L, 1.6g/L, 1.8g/L, 2g/L, effectively can solve the problem of nylon fabrics level-dyeing property difference.
As preferred version of the present invention, dye bath ratio is 1:5 ~ 20, more preferably 1:12; Described bath raio, also known as liquor ratio, refers to the part by weight of nylon fabrics and dye liquor.In staining procedure, the impact of bath raio on aberration is larger, and at the end of most dyeing, dyestuff reaches concentration balance in water He on fiber.If bath raio is excessive, the water yield is many, and time particularly with the dyeing such as REACTIVE DYES, direct dyes, although it is little to remain in change in concentration in dye bath, stays the total amount of dyestuff in water more, cause dyestuff on fabric few, colour-difference is apart from large.So continuous cylinder is produced or turn over when singly producing, control bath raio also very important.Because same model each dye vat actual inner diameter is variant, the actual bath amount that factory tackles every platform dyeing machine measures, and Liquid level scale indicates liquid measure in actual cylinder.Calculate institute's water requirement by fabric quality and bath raio during dyeing, then first squeeze into the water yield to ormal weight (reserve and add the dye liquor water yield), then enter cloth dyeing, be effectively controlled to make dye bath ratio.
As preferred version of the present invention, described softener is CN, is purchased from Jointex company, and described organic acid-releasing agent is VS, is purchased from Hensel and steps chemical industry, and described levelling agent is PAM, is purchased from Clariant chemical industry.
In the present invention, adding of described dyeing assistant is specially, and first adds described softener, and makes this softener disperse 4 ~ 6min; Add described in levelling agent again, and make this levelling agent disperse 4 ~ 6min; Then add described organic acid-releasing agent, and make this organic acid-releasing agent dispersion 4 ~ 6min.In the present invention, after adding a kind of dyeing assistant, stir 5min, after this dyeing assistant is uniformly dispersed, add lower a kind of dyeing assistant again.
Preferably, described acid fluorescent dye adds continuously in mode at the uniform velocity, and the joining day of described acid fluorescent dye is 5 ~ 20min, is preferably 10min.Acid fluorescent dye adds in dyeing machine at the uniform velocity, continuously, the concentration of the acid fluorescent dye in dyeing machine can be made linearly to increase, make Color better.
As the preferred version of the dyeing of the acid fluorescent dye of the present invention, the heating rate of described intensification dyeing is 0.8 ~ 1.5 DEG C/min, is incubated 5 ~ 40min, is incubated 25min after being preferably warming up to 95 DEG C after being warming up to 90 ~ 100 DEG C.For when nylon fabrics contaminating more shallow color, it is comparatively suitable that heating rate controls at 0.8 DEG C/min, in nylon fabrics dye in look time, heating rate need control at 1.0 DEG C/min, for when in nylon fabrics, dye is dark, heating rate need control at 1.5 DEG C/min.The aberration that temperature retention time controls when 20 ~ 30min is less, and temperature retention time is controlled at 25min, and stability and the reappearance of the color contaminated are better.Heating rate can be controlled automatically by controller.
In the present invention, after described dye liquor insulation, described dye liquor is cooled to 55 ~ 60 DEG C with the speed of 1 ~ 2 DEG C/min and discharges, and is preferably cooled to 60 DEG C with the speed of 1.5 DEG C/min and discharges.Can be lowered the temperature to the raffinate after dyeing by heat exchanger, automatically can control rate of temperature fall by controller.
In the present invention, after described staining procedure, also comprise wash water step: add water in described dyeing machine, with ramp to 30 ~ 45 of 2 ~ 3 DEG C/min DEG C cleaning 2 ~ 5min, then water is discharged, preferably, with the ramp to 40 of 3 DEG C/min DEG C insulation 4min, then water is discharged.Wash water temperature is too low, and the loose colour in nylon fabrics does not wash clean clearly, and color can be partially red partially yellow, the easy look flower of nylon fabrics, and wash water temperature is too high, and the color of the model contaminated is more shallow, and color is partially dark, and for the situation being added with Yellow fluorochrome, color can be partially blue.Adopting 40 DEG C to carry out wash water can make the Difference Control of contaminated color in tolerance interval.
In the present invention, after described wash water step, also comprise fixation step: water, pH adjusting agent added in dyeing machine and be made into acid solution, then add color-fixing agent and carry out intensification fixation.Wash water step is separated with fixation step by the present invention, the color after dye can be made more stable, not fugitive color.
In the present invention, described pH adjusting agent is acetic acid, and the consumption of described acetic acid is 0.1 ~ 0.5g/L, is preferably 0.3g/L, in order to the water in dyeing machine is deployed into acid solution, with effective fixation;
As preferred version of the present invention, the pH value of described acid solution is 4 ~ 6, makes the fixation efficiency of nylon fabrics reach the highest.
In the present invention, described color-fixing agent is P, is purchased from dolantin chemical industry, and the consumption of described P is 3 ~ 8owf%, and described P adds continuously in mode at the uniform velocity, and the time that described P adds is 10 ~ 30min; As preferred scheme, the consumption of described P is 5owf%, and the time that described P adds is 20min.
As the preferred version of the dyeing of the acid fluorescent dye of the present invention, described intensification fixation refers to ramp to 40 ~ 70 of 1 ~ 2 DEG C/min DEG C insulation 20 ~ 40min, preferably, intensification fixation refers to that fixation bath raio is 1:12 with the ramp to 50 of 1.5 DEG C/min DEG C insulation 30min.In fixation step, color fixing temperature is higher, and COLOR FASTNESS is higher, but COLOR FASTNESS can be subject to certain impact, and therefore the present invention is preferably 40 ~ 70 DEG C and carries out fixation, more preferably 50 DEG C.The fixation time is comparatively large on the impact of aberration, and when the time of fixation insulation is lower than 20min, color fixation fastness is poor, and fixation temperature retention time is long, the aberration between the nylon fabrics contaminated and standard jig is larger, therefore, the fixation time of the present invention is preferably 20 ~ 40min, more preferably 30min.
Compared with prior art, beneficial effect of the present invention is: the dyeing of acid fluorescent dye provided by the invention, comprises staining procedure: to until in dyeing and weaving thing by adding dyeing assistant and acid fluorescent dye after arriving first to contaminate at 30 ~ 40 DEG C; And, heat up to through contaminate fabric use the dye liquor be made up of described dyeing assistant and described acid fluorescent dye to dye; Described dyeing assistant comprises organic acid-releasing agent, in order to the pH value of described dye liquor is adjusted to 4 ~ 4.5 continuously.The present invention is by adding organic acid-releasing agent 40 DEG C time, along with temperature raises, organic acid-releasing agent slowly releases acid, slowly the pH of dye liquor is changed into 4 ~ 4.5 from initial 6 ~ 7.5, the speed acid fluorescent dye contaminating nylon fabrics can be slowed down, the dye-uptake of fluorescence ACID DYES in whole intensification dyeing course is consistent substantially, effectively avoids dyeing uneven, thus improve the reappearance of the color contaminated.
Accompanying drawing explanation
Fig. 1 is the process chart of staining procedure of the present invention.
Fig. 2 is the process chart of wash water step of the present invention.
Fig. 3 is the process chart of fixation step of the present invention.
Fig. 4 is for the fixation time described in the embodiment of the present invention is on the impact of aberration △ E.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing 1 ~ 4.
As no specific instructions, various raw material of the present invention all can commercially availablely be buied, or prepares according to the conventional method of this area.
Embodiment 1 fluorescence baby pink
Fabric: brocade+spandex warp knitting cloth, door width 141cm, grammes per square metre 155g/m
2
Equipment: sub-rock AK-DSL dye vat, Datacolor color measurement and color match instrument, pH meter
Dyeing recipe is as follows:
Fixation formula is as follows:
Powf% (dolantin chemical industry) 5.0
HAC(g/L)0.3
Bath raio 1:5
Fabric is placed in sub-rock AK-DSL dye vat, softener is added by above-mentioned formula under 40 DEG C of conditions, levelling agent is added after stirring 5min, organic acid-releasing agent VS is added after stirring 5min, stir linearly to add after 5min NylosanE8G1 yellow and and NylosanB red (the control linear joining day is 10min), with the ramp to 100 of 0.8 DEG C/min DEG C insulation 25min, be then cooled to 60 DEG C of drainings with the speed of 1.5 DEG C/min; In sub-rock AK-DSL dye vat, add water wash, with the ramp to 40 of 3 DEG C/min DEG C insulation 4min, draining; By above-mentioned fixation formula, water, acetic acid are added Then and dyes in airflow machine 43 DEG C time, regulate pH to 4 ~ 4.5, then linearly add MAP, time controling is 20min; Then with the ramp to 50 of 1.5 DEG C/min DEG C insulation 30min; Again add water and embathe, go out cylinder.
Comparative example 1 fluorescence baby pink
Organic acid-releasing agent VS is replaced with acetic acid, and other is all identical with embodiment 1.
Purple in embodiment 2 fluorescence
Fabric and equipment are all identical with embodiment 1.
Dyeing recipe is as follows:
Fixation formula is identical with embodiment 1.
According to above-mentioned formula, adopt the dyeing identical with embodiment 1 to prepare purple fabric in fluorescence, the heating rate that wherein dyes is 1.0 DEG C/min.
Purple in comparative example 2 fluorescence
Organic acid-releasing agent VS is replaced with acetic acid, and other is all identical with embodiment 2.
Embodiment 3 fluorescence deep red
Fabric and equipment are all identical with embodiment 1.
Dyeing recipe is as follows:
Fixation formula is identical with embodiment 1.
According to above-mentioned formula, adopt the dyeing identical with embodiment 1 to prepare fluorescence deep red fabric, the heating rate that wherein dyes is 1.5 DEG C/min.。
Comparative example 3 fluorescence deep red
Organic acid-releasing agent VS is replaced with acetic acid, and acetic acid consumption is 1g/L, and other is all identical with embodiment 2.
Acetes chinensis and evaluation:
Carry out three batches of large productions according to the dyeing of above-described embodiment 1 ~ 3 respectively and carry out spline to LABDIP model, employing Datacolor color measurement and color match instrument measures the aberration between three models of embodiment 1 ~ 3 and LABDIP model respectively.Each model measures four times and averages, and test result is in table 1.
Table 1
As known from Table 1, the aberration between three models in same color is less, shows the favorable reproducibility of the color adopting dyeing of the present invention to contaminate.
With LABDIP model for standard, adopt Datacolor color measurement and color match instrument to measure the aberration of embodiment 1 ~ 3 and the obtained model of comparative example 1 ~ 3 respectively, test result is in table 2.
Table 2
As known from Table 2, adopt acetic acid as the pH adjusting agent of dye liquor, the color aberration of the model contaminated is comparatively large, undesirable; And select organic acid-releasing agent VS as the pH adjusting agent of dye liquor, aberration is relatively little, and all in tolerance interval.
Detect the COLOR FASTNESS of embodiment 1 ~ 3 according to the following COLOR FASTNESS method of inspection, testing result is in table 3:
Fastness to soaping measures with reference to AATCCTestMethod61-2004;
Sweat proof acid COLOR FASTNESS measures with reference to AATCCTestMethod15-2009;
Resistance to WATER COLOR FASTNESS measures with reference to AATCCTestMethod107-2009;
Resistance to LIGHT COLOR FASTNESS measures with reference to AATCCTestMethod16E (10h)-2008.
Table 3
As known from Table 3, the COLOR FASTNESS of the model of embodiment 1 ~ 3 all meets the requirements.
Dyeing temperature retention time is on the impact of model aberration:
Dyeing temperature retention time is respectively 5min, 10min, 15min, 20min, 25min, 30min, 35min, 40min, other is all identical with the dyeing of embodiment 1, with LABDIP model for standard, adopt Datacolor color measurement and color match instrument to measure the aberration △ E of the model of each temperature retention time section respectively, test result is shown in Fig. 4.
As can be seen from Figure 4, the Changing Pattern of each color is basically identical, i.e. temperature retention time shorter (lower than 20min) or long (being greater than 30min), aberration is larger.Temperature retention time is interval at 20 ~ 30min, and aberration is less.Consider the factor such as stability, reappearance, dyeing temperature retention time is preferably 25min.
Post processing wash water temperature is on the impact of model aberration:
Change the temperature of wash water step, other is all identical with embodiment 1, and with LABDIP model for standard, adopt Datacolor color measurement and color match instrument to measure the aberration △ E of the model of each temperature retention time section respectively, test result is in table 4.
Table 4
From table 4: when 30 DEG C, Huang is partially red partially for color, the easy look flower of nylon fabrics, is because wash water water temperature is too low, causes loose colour not wash clean clearly and cause; Wash water temperature is higher, and sample color is more shallow, and fresh heavy (the △ C) of color and coloured light (△ H) change are partially heavy partially blue, and the yellow destruction of NylosanE8G1 is more, and color is more blue, therefore wash water temperature be 40 DEG C comparatively suitable.
Color fixing temperature is on the impact of model aberration and COLOR FASTNESS:
Change the color fixing temperature of fixation step, other is all identical with embodiment 1, with LABDIP model for standard, adopts Datacolor color measurement and color match instrument to measure the aberration △ E of the model of each temperature retention time section respectively, test result in table 5, color fixing temperature on the impact of COLOR FASTNESS in table 6.
Table 5
Table 6
From table 5, table 6, color fixing temperature is 50 DEG C or following time, and aberration is less; And more than 50 DEG C, difference increases gradually; Color fixing temperature is higher, and the various COLOR FASTNESS of product are higher.But, need the impact in conjunction with aberration, therefore color fixing temperature be 50 DEG C better.
Color fixing temperature is 50 DEG C, and change fixation temperature retention time, other are all identical with embodiment 1, and test fixation temperature retention time is on the impact of aberration, and test result is in table 7.
Table 7
As seen from Table 7, fixation temperature retention time is longer, and the aberration of model increases.The fixation time, aberration was less within 30min.But fixation temperature retention time is when 10 ~ 20min, and color fixation fastness is poor.Consider, select the fixation time to be 30min.
Claims (10)
1. a dyeing for acid fluorescent dye, is characterized in that, comprises staining procedure: to until in dyeing and weaving thing by adding dyeing assistant and acid fluorescent dye after arriving first to contaminate at 30 ~ 40 DEG C; And, heat up to through contaminate fabric use the dye liquor be made up of described dyeing assistant and described acid fluorescent dye to dye;
Described dyeing assistant comprises organic acid-releasing agent, in order to the pH value of described dye liquor is adjusted to 4 ~ 4.5 continuously.
2. dyeing according to claim 1, is characterized in that, take dye liquor as 1L, and described dyeing assistant comprises 0.5 ~ 1.5g softener, the organic acid-releasing agent of 0.1 ~ 1g and 1 ~ 2g levelling agent;
Preferably, dye bath ratio is 1:5 ~ 20, more preferably 1:12;
Preferably, described softener is CN, and described organic acid-releasing agent is VS, and described levelling agent is PAM.
3. dyeing according to claim 2, is characterized in that, adding of described dyeing assistant is specially, and first adds described softener, and makes this softener disperse 4 ~ 6min; Add described levelling agent again, and make this levelling agent disperse 4 ~ 6min; Then add described organic acid-releasing agent, and make this organic acid-releasing agent dispersion 4 ~ 6min;
Preferably, described acid fluorescent dye adds continuously in mode at the uniform velocity, and the joining day of described acid fluorescent dye is 5 ~ 20min.
4. dyeing according to claim 1, is characterized in that, the described heating rate heating up dyeing is 0.8 ~ 1.5 DEG C/min, is incubated 5 ~ 40min after being warming up to 90 ~ 100 DEG C, is preferably warming up to 95 DEG C of insulation 25min.
5. dyeing according to claim 4, is characterized in that, with the speed of 1 ~ 2 DEG C/min the temperature of dye liquor is down to 55 ~ 60 DEG C and discharges after the insulation of described dye liquor.
6. dyeing according to claim 1, is characterized in that, also comprises wash water step after described staining procedure: add water in described dyeing machine, with ramp to 30 ~ 45 of 2 ~ 3 DEG C/min DEG C cleaning 2 ~ 5min, is then discharged by water.
7. dyeing according to claim 6, is characterized in that, also comprises fixation step after described wash water step: water, pH adjusting agent added in dyeing machine and be made into acid solution, then add color-fixing agent and carry out intensification fixation.
8. dyeing according to claim 7, is characterized in that, described pH adjusting agent is acetic acid, and the consumption of described acetic acid is 0.1 ~ 0.5g/L, is preferably 0.3g/L;
Preferably, the pH value of described acid solution is 4 ~ 6.
9. dyeing according to claim 7, is characterized in that, described color-fixing agent is P, and the consumption of described color-fixing agent P is 3 ~ 8owf%, and described color-fixing agent P adds continuously in mode at the uniform velocity, described in time of adding be 10 ~ 30min;
Preferably, the consumption of described color-fixing agent P is 5owf%, and the time that described color-fixing agent P adds is 20min.
10. dyeing according to claim 7, is characterized in that, described intensification fixation refers to that fixation bath raio is 1:5 ~ 20 with ramp to 40 ~ 70 of 1 ~ 2 DEG C/min DEG C insulation 20 ~ 40min;
Preferably, described intensification fixation refers to that fixation bath raio is 1:12 with the ramp to 50 of 1.5 DEG C/min DEG C insulation 30min.
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