CN106087490A - Method for improving photocatalytic stripping uniformity of cotton fabric dyed by reactive dye - Google Patents
Method for improving photocatalytic stripping uniformity of cotton fabric dyed by reactive dye Download PDFInfo
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- CN106087490A CN106087490A CN201610397709.9A CN201610397709A CN106087490A CN 106087490 A CN106087490 A CN 106087490A CN 201610397709 A CN201610397709 A CN 201610397709A CN 106087490 A CN106087490 A CN 106087490A
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- cotton fabric
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- 239000004744 fabric Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 48
- 229920000742 Cotton Polymers 0.000 title claims abstract description 39
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 38
- 239000000985 reactive dye Substances 0.000 title claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000975 dye Substances 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 3
- 238000004043 dyeing Methods 0.000 claims description 41
- 238000007146 photocatalysis Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 13
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 13
- 229910052753 mercury Inorganic materials 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000000344 soap Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000007796 conventional method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000010981 drying operation Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 150000003254 radicals Chemical class 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 206010003549 asthenia Diseases 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000005470 impregnation Methods 0.000 abstract 1
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000004753 textile Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 description 1
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical group C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 101100129500 Caenorhabditis elegans max-2 gene Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 240000008067 Cucumis sativus Species 0.000 description 1
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- SOROIESOUPGGFO-UHFFFAOYSA-N diazolidinylurea Chemical compound OCNC(=O)N(CO)C1N(CO)C(=O)N(CO)C1=O SOROIESOUPGGFO-UHFFFAOYSA-N 0.000 description 1
- 229960001083 diazolidinylurea Drugs 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004045 reactive dyeing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- D06P5/10—After-treatment with compounds containing metal
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
The invention discloses a method for improving the photo-catalytic stripping uniformity of cotton fabric dyed by reactive dye, which has the principle that under the combined action of ultraviolet light, water, oxygen and a catalyst, hydroxyl active free radicals with strong oxidizing property can be generated in a catalyst solution and can generate decomposition reaction with dye molecules, so that the molecular structure of the dye is damaged, and the aim of stripping is finally fulfilled. Compared with the traditional stripping method, the method uses the titanium dioxide catalyst which is nontoxic and harmless, has low energy consumption and low cost, has less strength loss of the fabric and obviously reduced water consumption compared with a water bath impregnation method, and has the advantages of ecological environmental protection, energy conservation, emission reduction and the like.
Description
Technical field
The present invention relates to technical field of textile printing, particularly relate to one and improve Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip
The method of uniformity.
Background technology
In recent years, along with the raising of level of consumption, consumer is more and more higher to the requirement of garment material, and some add in dyeing and finishing
The fabric gone wrong during work, dealing with improperly if recycled, not being liked by consumer, but also can give dye
Whole processing business brings the trouble of many, for economic damages, can be solved by reparation, but if manufacturer name
Praise impaired, the biggest to later influence on development.In the dyeing and finishing course of processing, often occur and the most scabrous problem is big
Majority occurs in dyeing and stamp the two operation, and wherein during dyeing, produced problem is the most scabrous, because dyeing is big
Area, and stamp is little area, more relatively easy.When dyeing, due to a variety of causes, dyed fabric there will be various
Defect, such as uneven dyeing, color jumping lamp, color dot, mottle, aberration etc. (list of references: dyeing and finishing technology and principle (volume two) [M].
Beijing, China Textiles Press, 2009), and at majority of case, dyeing occurs between the sample of defect and standard sample
Having a long way to go, now manufacturer typically can use two kinds of methods to solve, and one is to be somebody's turn to do by dye light coloured fabrics as contaminating deep-colour fabric,
Another dyes after being stripped by dyed fabric exactly the most again, and wherein later approach is that manufacturer is commonly used
(list of references: Long Jiajie, Zhang Yanqin, Xie Changfeng. nothing bath stripping method [P] of a kind of cotton fabrics dyed with reactive dyes. China:
CN 104790235 A,2015-07-22).Up to the present, only there is the recovery utilization rate of defect fabric to dyeing in printing and dyeing mill
Being 3%, recovery utilization rate is not the highest, and former strip during, the rate of stripping of fabric is not the highest, particularly shells
The uniformity of color, can not meet the requirement of consumer substantially.Therefore, research and develop new or technique of preferably stripping dyeing is occurred
It is very important that the fabric of defect carries out stripping, and the development to textile printing and dyeing industry is the most significant.
Strip and refer to utilize Cucumber and the dyestuff generation chemical reaction on fiber, make the color development in molecular structure of dye
Group is destroyed, so that fiber loses color.According to the difference of use chemistry stripping agent type, stripping agent can be divided into two
Big class, a class is that oxidation is stripped, i.e. the stripping agent of oxidisability, such as hydrogen peroxide, sodium hypochlorite etc., they are the most permissible
Destroy the chromophoric group of some dye molecule, make dye molecule that the change of irreversible structure to occur, thus realize fading or colour killing,
Wherein sodium hypochlorite can produce organic chloride after fabric easily causes damage, and discharge, and its use is restricted；Another kind of it is
Reduction is stripped, i.e. the stripping agent of reproducibility, and such as sodium hydrosulfite, rongalite, thiourea dioxide etc., feature is the dyestuff to some structure
The destruction of color development system is reversible, the color development system of such as anthraquinone ring, the wherein irritant abnormal smells from the patient of rongalite, meeting after making moist
Releasing hydrogen sulfide gas, and in use Diazolidinyl Urea, be detrimental to health (list of references: stripping of dyed fabric
And technology of returning something for repairs [J]. printing and dyeing, 2006,32 (14): 12-16).
In former stripping method, traditional stripping method need to consume a large amount of chemical drugs, and goes back after end of stripping
The contrary oxidant of oxidation-reduction quality or reducing agent need to be added, to prevent the stripping agent of residual from the generation of redying in rear road being affected,
Relatively big to the demand of water resource and the energy, cost is high, and the waste water of discharge is serious to environmental hazard, even with some phases
Stripping advanced person technology, but because stripping the immature of technology, after causing stripping, the color of fabric is the most uneven, thus causes
Make substantial amounts of fabric of stripping damaged and waste.
At present, the use of disperse dyes is the first big class textile dyestuff, immediately after be reactive dye (list of references:
Dyestuff chemistry [M]. Beijing, China Textiles Press, 2010).But for reactive dye, due to its molecular structure of dye
In containing active group, can be combined with covalent bond between fiber, its wet colour fastness, light fastness and fastness to rubbing etc. are all
More excellent than other dyestuffs, therefore its use the most increasingly receives publicity, but due between reactive dye and fiber with altogether
Valence link combines, and this makes reactive dye treatment conditions when stripping the harshest, and the harm to environment is the biggest.
How to reduce chemicals usage, reduce the consumption to water resource, search out a kind of efficient, green, weaving of cleaning
Product stripping method, particularly can improve fabric photocatalysis and strip the method for uniformity, again can be to the fabric of reactive dyeing
Stripping, to become the major issue being badly in need of solving, therefore, the exploitation of new technique is extremely the most urgent with application.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide one, to have apparatus and process of stripping simple, and flow process is short,
Rate of stripping is high, and photocatalysis uniformity of stripping is good, and the Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis that improves of energy-saving and emission-reduction is stripped uniformity
Method.
What the present invention proposed a kind of improve Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strips the method for uniformity, the method former
Reason be, under the common effect of ultraviolet light, water, oxygen and catalyst, catalyst solution can produce the hydroxyl of strong oxidizing property
Base living radical, can and dye molecule between decompose reaction, make molecular structure of dye be destroyed, final realization is stripped
Purpose, it is characterised in that: comprise the following steps:
Step (1): bafta uses conventional method carry out successively dyeing, fixation, soap boiling, washing and drying operation,
To dyed cotton fabric；
Step (2): self-control photocatalysis is stripped device, and oxygen increasing pump is placed in the bottom of reaction vessel, and above oxygen increasing pump
1.0-15cm position arranges the bubble uniform distributor that mesh aperture is 0.1-1.0cm；
Step (3): add catalyst in deionized water and be configured to catalyst and strip liquid, regulation catalyst is stripped the pH of liquid
Value, liquid of being stripped by catalyst is poured in reaction vessel；
Step (4): be set in by quartz glass sleeve on low pressure ultraviolet mercury lamp, puts the dyed cotton fabric in step (1)
At the peripheral 10mm-50mm of quartz glass sleeve, it is subsequently placed in the strip catalyst of device of self-control photocatalysis and strips in liquid, open
Open low pressure ultraviolet mercury lamp and oxygen increasing pump, utilize ultraviolet light, water, catalyst, and the uniform oxygen through the input of bubble uniform distributor
Gas, carries out one side stripping treatment to dyed cotton fabric, and the stripping treatment time is 2-120min；
Step (5): after end of stripping, take out bafta, fully wash with water, dry, obtain one side full width bafta equal
Even finished product of stripping.
Further, in step (1), the dyestuff used by dyeing is the reactive dye of Monoazo type, and its active group is single
Or multi-active base group.
Further, in step (2), described bubble uniform distributor be metal gauze or macromolecular fibre class material many
Hole drainage screen, described mesh density is 2-150 mesh.
Further, in step (2), the power of described low pressure ultraviolet mercury lamp is 8W.
Further, in step (3), described catalyst is titanium dioxide, and its concentration is 0.01g/L～0.1g/L.
Further, in step (3), the strip pH value range of liquid of described catalyst is 2～12.
Further, in step (4), described oxygen is that oxygen increasing pump produces under conditions of water exists.
By such scheme, the present invention at least has the advantage that and strips with traditional waters and other are relatively advanced
Stripping method is compared, stripping method provided by the present invention, and equipment of stripping is simple, and technological process is short, and rate of stripping is high, strips uniformly
Good, required chemical reagent is few, and human body and environment are not injured and pollute by the catalyst used, and the damage to fabric is little, consumption
The water yield significantly reduces, and has the advantage such as ecological, environmental protective, energy-saving and emission-reduction, meets the requirement of sustainable development.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Accompanying drawing explanation
Fig. 1 is to make photocatalysis in the present invention by oneself to strip apparatus structure schematic diagram；
Fig. 2 is that the present invention improves Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strips the process chart of method of uniformity；
Fig. 3 is that in the embodiment of the present invention one to five, photocatalysis is stripped uniformity phenogram；
Fig. 4 is rate result schematic diagram of stripping in the embodiment of the present invention one to five；
Fig. 5 is strength retention result schematic diagram in the embodiment of the present invention one to five.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is described in further detail.Hereinafter implement
Example is used for illustrating the present invention, but is not limited to the scope of the present invention.
Dyestuff involved in embodiment is as follows:
Reactive dye: activated red X-3B, for conventional commercial product.
Other chemical reagent:
Dyeing and soap boiling auxiliary agent: sodium chloride (analytical pure), sodium carbonate (analytical pure), soap flakes (analytical pure)；PH value regulator:
Hydrochloric acid (analytical pure), sodium hydroxide (analytical pure)；Catalyst: titanium dioxide.
Embodiment one:
A kind of improving Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip the method for uniformity, see accompanying drawing 1, it is the present embodiment
In self-control photocatalysis strip the schematic diagram of device, photocatalysis strip device schematic diagram mainly include power line 1, reaction vessel 2,
Dyed cotton fabric 3, low pressure ultraviolet mercury lamp 4, quartz glass sleeve 5, oxygen increasing pump 6, bubble uniform distributor 7, in reaction vessel
It is provided with low pressure ultraviolet mercury lamp 4, quartz glass sleeve 5, oxygen increasing pump 6 and bubble uniform distributor 7, low pressure ultraviolet mercury lamp 4 and power supply
Line 1 is connected and is placed on inside quartz glass sleeve, and the power of low pressure ultraviolet mercury lamp is 8W, by smooth for dyed cotton fabric to be stripped
To be placed in quartz glass sleeve peripheral, distance is 10mm～50mm, and during work, device of whole self-control photocatalysis being stripped is placed in secretly
Place, opens low pressure ultraviolet mercury lamp and the power supply of oxygen increasing pump, dyed cotton fabric is carried out one side stripping treatment；Seeing accompanying drawing 2, it is
This example provides bafta to strip from dyeing to the process chart of finished product, specifically includes following steps:
1. bafta uses the dyeing of reactive dye conventional method, fixation, soap boiling, washes and dry, and in the present embodiment, cotton is knitted
Thing is textile woven (104g/m2), the process conditions of its dyeing and fixation are: 4% (o.w.f) activated red X-3B (100%),
20g/L sodium chloride, 15g/L sodium carbonate, bath raio is 1:50.During dyeing, 60 DEG C enter dye, add sodium chloride, continuous dye after 15min
15min, is then warming up to 90 DEG C with 2 DEG C/min speed, adds sodium carbonate, fixation 30min.After fixation, cooling, cold water
Wash, soap (soap flakes 2.0g/L, bath raio 1:50, temperature 90 DEG C, time 15min), hot water wash, cold water are washed, dry for standby.
2. the pH utilizing hydrochloric acid regulation deionized water is 4, is used for preparing catalyst and strips liquid, and catalyst is TiO2, concentration
For 0.01g/L, the time of stripping is 60min, and temperature of stripping is room temperature.
3. oxygen increasing pump is placed in the bottom of reaction vessel, and above it 1cm position arrange aperture be 0.5cm ×
The rhombus bubble uniform distributor of 0.3cm (long × wide), liquid of being stripped by the catalyst configured joins self-control photocatalysis and strips
In device, to be placed in quartz glass sleeve peripheral by parallel for dyed cotton fabric to be stripped, and distance is 10mm, by low pressure ultraviolet mercury lamp
Stone is placed in self-control photocatalysis together with English glass bushing and strips inside device, and device of whole self-control photocatalysis being stripped is placed in secretly
Place, opens low pressure ultraviolet mercury lamp and oxygen increasing pump, dyed cotton fabric carries out machine glazing catalysis and strips.
4. strip after end, take out bafta of stripping, fully wash with cold water, dry, obtain finished product of stripping.
Finished product of stripping in the present embodiment is carried out surface color depth value (K/S value) measure and strip uniformity characterize.
Utilize UltraScan PRO type color measurement and color match instrument (HunterLab company of the U.S.), at D65 light source and 10 ° of visual angles
Under the conditions of, after stripping, different 10 point is chosen in the front of bafta, measures after stripping bafta at maximum absorption wavelength (λ
Max) the K/S value under, calculates the meansigma methods of K/S value under maximum absorption wavelength by formula (1)Pass through formula
And formula (3) calculates (K/S) value (2)And standard deviationTo uniformity of stripping
Characterizing, result is as shown in Figure 3.
Bafta after stripping in the present embodiment is carried out surface color depth value (K/S value) and tension failure strength measures, meter
Calculate its strip rate and strength retention.
Utilize UltraScan PRO type color measurement and color match instrument (HunterLab company of the U.S.), use D65 light source and 10 ° of visual angles
The bafta providing this example surface color depth value (K/S value) before and after stripping is measured, and enters according to below equation (4)
The calculating of capable rate of stripping, result is as shown in Figure 4.
Strip before and after's bafta tension failure strength mensuration and the calculating of strength retention.
According to GB/T 3917 standard, use galley proof method to the cotton before and after stripping on YG026B type electronic fabric strength tester
Fabric carries out the mensuration of tension failure strength, and the strength retention of fabric (5) as follows calculates, result such as Fig. 5 institute
Show.
Embodiment two:
The present embodiment provides a kind of to be improved Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strips the method for uniformity, the step of the method
Suddenly with embodiment one, wherein in step 2, pH value with sodium hydroxide regulation deionized water is 10, is used for configuring photocatalysis and strips
Liquid, step 3 mesoporous is that the distance of the rhombus bubble uniform distributor distance oxygen increasing pump of 0.5cm × 0.3cm (long × wide) is for changing
For 5cm, in the case of other conditions are the most constant, dyed cotton fabric is carried out machine glazing catalysis stripping treatment.
Strip the present embodiment uniformity, rate of stripping and strength retention characterizes, result such as Fig. 3, Fig. 4 and Fig. 5
Shown in.
Embodiment three:
The present embodiment provides a kind of to be improved Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strips the method for uniformity, the step of the method
Rapid with embodiment one, wherein catalyst TiO in step 22Concentration be 0.04g/L, dyed cotton fabric to be stripped in step 3 with
The distance of quartz glass sleeve is 30mm, under conditions of other conditions are constant, dyed cotton fabric carries out machine glazing catalysis stripping
Color processes.
Strip the present embodiment uniformity, rate of stripping and strength retention characterizes, result such as Fig. 3, Fig. 4 and Fig. 5
Shown in.
Embodiment four:
The present embodiment provides a kind of to be improved Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strips the method for uniformity, the step of the method
Rapid with embodiment one, wherein catalyst TiO in step 22Concentration be 0.1g/L, the photocatalysis time of stripping is 30min, step 3
Mesoporous be the distance of the rhombus bubble uniform distributor distance oxygen increasing pump of 0.5cm × 0.3cm (long × wide) for changing 10cm into,
In the case of other conditions are constant, dyed cotton fabric is carried out machine glazing catalysis stripping treatment.
Strip the present embodiment uniformity, rate of stripping and strength retention characterizes, result such as Fig. 3, Fig. 4 and Fig. 5
Shown in.
Embodiment five:
The present embodiment provides a kind of to be improved Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strips the method for uniformity, the step of the method
Suddenly with embodiment one, wherein in step, 3 mesoporous are the rhombus bubble uniform distributor distance of 0.5cm × 0.3cm (long × wide)
The distance of oxygen increasing pump is for changing 15cm into, and dyed cotton fabric to be stripped is 50mm from the distance of quartz glass sleeve, at other
In the case of part is constant, dyed cotton fabric is carried out one side stripping treatment.
Strip the present embodiment uniformity, rate of stripping and strength retention characterizes, result such as Fig. 3, Fig. 4 and Fig. 5
Shown in.
Being analyzed the sign data of the embodiment of the present invention one to embodiment five, Fig. 3 data show: each reality of the present invention
Execute the variance of (K/S) value in exampleAnd standard deviationThe least, this shows reactive dye dye in the present invention
The uniformity that bafta photocatalysis is stripped is the best；Fig. 4 and Fig. 5 shows, in the present invention, the photocatalysis of bafta rate of stripping is the highest,
All can reach more than 80%, and the strength retention of fabric is the highest, all can be maintained at more than 70%, the damage to bafta
The least, this kind of strip method of uniformity of Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis of improving showing that the present invention provides is feasible
's.
The above is only the preferred embodiment of the present invention, is not limited to the present invention, it is noted that for this skill
For the those of ordinary skill in art field, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and
Modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (7)
1. improve Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis to strip the method for uniformity, the principle of the method be, in ultraviolet
Under the common effect of light, water, oxygen and catalyst, catalyst solution can produce the hydroxyl activity free radical of strong oxidizing property,
Can and dye molecule between decompose reaction, make molecular structure of dye be destroyed, finally realize the purpose stripped, its feature
It is: comprise the following steps:
Step (1): bafta uses conventional method carry out successively dyeing, fixation, soap boiling, washing and drying operation, contaminated
Color bafta；
Step (2): self-control photocatalysis is stripped device, and oxygen increasing pump is placed in the bottom of reaction vessel, and 1.0-above oxygen increasing pump
15cm position arranges the bubble uniform distributor that mesh aperture is 0.1-1.0cm；
Step (3): add catalyst in deionized water and be configured to catalyst and strip liquid, regulation catalyst strips the pH value of liquid,
Liquid of being stripped by catalyst is poured in reaction vessel；
Step (4): be set in by quartz glass sleeve on low pressure ultraviolet mercury lamp, is placed in stone by the dyed cotton fabric in step (1)
At the peripheral 10mm-50mm of English glass bushing, it is subsequently placed in the strip catalyst of device of self-control photocatalysis and strips in liquid, open low
Pressure ultraviolet mercury lamp and oxygen increasing pump, utilize ultraviolet light, water, catalyst, and the uniform oxygen through the input of bubble uniform distributor, right
Dyed cotton fabric carries out one side stripping treatment, and the stripping treatment time is 2-120min；
Step (5): after end of stripping, take out bafta, fully wash with water, dry, obtain one side full width bafta and uniformly shell
Color finished product.
The most according to claim 1 a kind of improving Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip the method for uniformity, it is special
Levying and be: in step (1), the dyestuff used by dyeing is the reactive dye of Monoazo type, and its active group is single or multiple active group
Group.
The most according to claim 1 a kind of improving Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip the method for uniformity, it is special
Levying and be: in step (2), described bubble uniform distributor is metal gauze or the porous filtering net of macromolecular fibre class material,
Described mesh density is 2-150 mesh.
The most according to claim 1 a kind of improving Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip the method for uniformity, it is special
Levying and be: in step (2), the power of described low pressure ultraviolet mercury lamp is 8W.
The most according to claim 1 a kind of improving Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip the method for uniformity, it is special
Levying and be: in step (3), described catalyst is titanium dioxide, and its concentration is 0.01g/L～0.1g/L.
The most according to claim 1 a kind of improving Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip the method for uniformity, it is special
Levying and be: in step (3), the strip pH value range of liquid of described catalyst is 2～12.
The most according to claim 1 a kind of improving Dyeing of Cotton Fabric with Reactive Dyes fabric photocatalysis and strip the method for uniformity, it is special
Levying and be: in step (4), described oxygen is that oxygen increasing pump produces under conditions of water exists.
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| CN106939475A (en) * | 2017-03-31 | 2017-07-11 | 苏州大学 | A kind of reciprocating photocatalysis of open width fabric is stripped machine |
| CN109267388A (en) * | 2018-09-11 | 2019-01-25 | 南京工业大学 | Micro-damage stripping method for wool fabric in photocatalysis-thiourea dioxide composite mode |
| CN110205846A (en) * | 2019-06-18 | 2019-09-06 | 苏州大学 | A kind of cowboy's sand washing method based on light quantum stripping agent |
| CN113956147A (en) * | 2021-11-22 | 2022-01-21 | 浙江金科日化原料有限公司 | Decolorizing process of 2-ethyl anthraquinone crude product |
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| CN106939475A (en) * | 2017-03-31 | 2017-07-11 | 苏州大学 | A kind of reciprocating photocatalysis of open width fabric is stripped machine |
| CN106939475B (en) * | 2017-03-31 | 2019-07-23 | 苏州大学 | A kind of reciprocating photocatalysis of open width fabric is stripped machine |
| CN109267388A (en) * | 2018-09-11 | 2019-01-25 | 南京工业大学 | Micro-damage stripping method for wool fabric in photocatalysis-thiourea dioxide composite mode |
| CN109267388B (en) * | 2018-09-11 | 2021-07-09 | 南京工业大学 | Micro-damage stripping method for wool fabric in photocatalysis-thiourea dioxide composite mode |
| CN110205846A (en) * | 2019-06-18 | 2019-09-06 | 苏州大学 | A kind of cowboy's sand washing method based on light quantum stripping agent |
| CN113956147A (en) * | 2021-11-22 | 2022-01-21 | 浙江金科日化原料有限公司 | Decolorizing process of 2-ethyl anthraquinone crude product |
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Application publication date: 20161109 |