CN103741524A - High-absorption dyeing method for dyeing of superfine fiber synthetic leather - Google Patents
High-absorption dyeing method for dyeing of superfine fiber synthetic leather Download PDFInfo
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Abstract
A high-absorption dyeing method for dyeing of superfine fiber synthetic leather comprises the following steps: putting superfine fiber polyurethane synthetic leather base cloth in a dyeing machine, adding water, a non-ionic surfactant, and a two-tailed cationic surfactant, adjusting the pH value to 7.0-7.5, processing at 70-80 DEG C; adding a dye, dyeing at 90-95 DEG C, adjusting the pH value to 5.0-5.5, continuing to dye; finally adding a dye-fixing agent, processing at 90-95 DEG C, and performing water washing to complete dyeing. The method of the invention adopts the non-ionic surfactant as a levelling agent, and adopts the two-tailed cationic surfactant as a color-absorbing agent; the non-ionic surfactant and the two-tailed cationic surfactant have good compatibility; when the dye is added and the pH value is adjusted to 4.5-5.5, the two-tailed cationic surfactant shows the characteristics of cations, which enables better absorption of the dye, and greatly improves the dye absorptivity.
Description
Technical field
The invention belongs to superfine fiber polyurethane leather technical field, be specifically related to a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing.
Background technology
Natural leather resource-constrained, production process can produce larger pollution, have premium properties simulated composite leather be developed to the pursuit for the mankind.Wherein take the not weaving fabric of superfine fiber with tridimensional network as reinforcing material, the superfine fiber chemical leather obtaining by dipping polyurethane, no matter from internal microstructure, or the aspect such as appearance tactile impression and physical characteristic and people's snugness of fit has all approached natural leather.According to statistics, by 2012, the annual capacity of Chinese superfine fiber chemical leather was about 9,500 ten thousand square metres of left and right, 7,500 ten thousand square metres of left and right of actual annual production.The existing more than 90% high-grade sport footwear in the whole world adopts superfine fiber chemical leather manufacture, and high-grade automotive seat also starts to adopt superfine fiber chemical leather to substitute natural leather.
In the fast development of superfine fiber chemical leather process technology, still there are some crucial technology not yet thoroughly to break through, the serious hindrance that becomes superfine fiber chemical leather development, wherein, the staining technique of super fine fiber synthetic leather is exactly one of its Pinch technology of not yet breaking through.
For the dyeing of superfine fiber chemical leather, its technological difficulties mainly contain following two aspects.One, component, superfine fiber chemical leather mainly comprises two kinds of compositions of polyurethane that not weaving fabric of superfine fiber and dipping are filled.These two kinds of constituent structure and performance difference are very large, and single dyestuff and single colouring method are difficult to meet the dyeing requirement of two kinds of compositions, and two kinds of compositions are difficult to the Color that simultaneously reaches good; They are two years old, active group on superfine fiber chemical leather fiber is little, there is a large amount of carbochains and amide groups in molecule middle-of-chain, unprotected side chain, only just has carboxyl and amino at the end of strand, mainly relies on the deposition of dyestuff self to make fiber colouring during dyeing, therefore, most of dyestuffs are difficult to dye, and its washing fastness is very poor, is difficult to reach dyeing requirement.
Because the dyeing difficulty of superfine fiber chemical leather is larger, cost is higher, and most superfine fiber chemical leather does not dye, just manufacture of intraocular coating on white superfine fiber synthetic leather base cloth, be processed into finished product, the appearance luster of this product is come this in artificial coating.The product that utilizes this superfine fiber chemical leather to manufacture, as shoes and sofa etc. in use easily gall artificial coating and show-through, the serious serviceability that affects product is restricting the fast development of superfine fiber chemical leather.
For the staining technique of superfine fiber chemical leather, mainly contain the following aspects.(1) the one pack system dyeing technology that adopts high temperature-pressure dyeing machine to carry out, this technology is applicable to industrialized production in enormous quantities, production efficiency is high, in production process, energy consumption is higher, the dyestuff of one-component is difficult to meet the dyeing requirement of two kinds of compositions of superfine fiber chemical leather simultaneously, and wherein the colorability of a certain composition is poor, dyes inhomogeneous, dyefastness is bad, not water-fastness.This technique is at present only for the less demanding superfine fiber chemical leather with face coat that dyes, and to the suede of band coating not, this staining technique does not reach requirement at all; (2) the multi-component dyes staining technique that adopts high temperature-pressure dyeing machine to carry out, the selection of multi-component dyes, multi-component dyes is suitable for the painted requirement of the polyurethane of not weaving fabric of superfine fiber and dipping filling separately to a certain extent, but dye under with bath and the same terms, process conditions be difficult to meet simultaneously multi-component dyes on dye requirement, meanwhile, between multi-component dyes, exist the problem of dying in competition.Bulk dyeing is inhomogeneous, and dyefastness is bad, not water-fastness, and dyestuff absorptivity is lower.(3) the low-temperature atmosphere-pressure suction-type staining technique that adopts dyeing machine to carry out, the most obvious technical characterictic of this technology is dyeing under low-temperature atmosphere-pressure, and the energy consumption of dyeing is lower.But this staining technique still exists dyeing inhomogeneous, and dyefastness is bad, not laundry-resistant defect dyes simultaneously under low-temperature atmosphere-pressure, and the dye-uptake of dyestuff is lower, and raffinate contains more dyestuff, pollutes larger.(4) color masterbatch composite spinning technology, says it is dye technology on this technology stricti jurise, rather than staining technique.Its technical characterictic is to sneak into color masterbatch in the process of superfine fibre manufacture, and the superfine fibre obtaining will be with the color of the color masterbatch adding, and the not weaving fabric of superfine fiber that finally processing obtains has just been with color.The not weaving fabric of superfine fiber obtaining by this technology, COLOR FASTNESS is very high, still, polyurethane composition needs later stage dyeing, the compound physical and mechanical properties that can affect fiber itself of color masterbatch, the combined amount of color masterbatch can not be too large, and the color finally presenting is not dense.The painted of early stage can limit the product development in later stage simultaneously, produces product variety single, is difficult to meet market demands; (5) color masterbatch composite polyurethane filling technique, technology type in this technology and (4) color masterbatch composite spinning technology seemingly, be exactly in the process of production superfine fiber chemical leather, when utilizing the non-manufacture cloth of filling polyurethane superfine fibre, in polyurethane, sneak into color masterbatch and be filled into together in the non-manufacture cloth of fine fibre, finally obtaining superfine fiber chemical leather with color.The COLOR FASTNESS that this technology obtains is fine.But not weaving fabric of superfine fiber composition needs later stage dyeing, the painted of early stage can limit the product development in later stage simultaneously, produces product variety single, is difficult to meet market demands; (6) adopt the technology of color masterbatch composite spinning technology and color masterbatch composite polyurethane filling technique simultaneously, this method and combine the technological merit of (4) color masterbatch composite spinning technology and (5) color masterbatch composite polyurethane filling technique, also embodies the technological deficiency of (4) color masterbatch composite spinning technology and (5) color masterbatch composite polyurethane filling technique.
Summary of the invention
The object of the present invention is to provide a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing, the method dyestuff absorptivity is high, Color good.
In order to achieve the above object, the technical solution used in the present invention is:
The present invention includes following steps:
1) according to the mass fraction, get respectively the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, surfactant, two tail type cationic surfactants of 1.5～3 parts, the dyestuff of 2～6 parts and the color-fixing agent of 0.5～1 part of nonionic of 1～2 part;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, then add surfactant and two tail type cationic surfactant of water, nonionic, then regulate pH value to 7.0～7.5, at 70～80 ℃, process 30～40min; Add again dyestuff, after the 100～120min that dyes, regulate pH value to 5.0～5.5 at 90～95 ℃, continue dyeing 40～60min; Finally add color-fixing agent, at 90～95 ℃, process 30～60min after washing and complete dyeing.
PH value 7.0～7.5th in described step 1), adopts ammoniacal liquor to regulate.
Described step 2) in pH value 5.0～5.5th, adopt acetic acid to regulate.
The surfactant of described nonionic is the mixture of one or both arbitrary proportions in paregal O-35, peregal O-25, paregal O-20.
Described two tail type cationic surfactants are the mixture of one or both arbitrary proportions in the two dodecyl dimethyl ammoniums of chlorination, chlorination double hexadecyl Dimethyl Ammonium, the two octadecyl Dimethyl Ammonium of chlorination.
Described dyestuff is 1:2 type premetallized dye.
Described 1:2 type premetallized dye is the mixture of one or more arbitrary proportions in 1:2 type premetallized dye yellow 4GN, the red G of 1:2 type premetallized dye, the black B of 1:2 type premetallized dye.
Described color-fixing agent is the mixture of one or both arbitrary proportions in aluminum triacetate, aluminium triformate.
Compared with prior art, beneficial effect of the present invention is:
The present invention adopts the surfactant of nonionic as levelling agent, two tail type cationic surfactants are as inhaling toner, the surfactant of nonionic and two tail type cationic surfactant have good compatibility, when regulating pH value to be 7.0～7.5, the two can infiltrate in superfine fiber synthetic leather base cloth, while adding dyeing, non-ionic surface active agent plays level dyeing effect, and the cationic surfactant of two tail types can be adsorbed on superfine fibre and polyurethane surface; When adding while pH value being adjusted to 5.0～5.5 after dyestuff, the cationic surfactant of two tail types presents cationic characteristic, and dyestuff can better be absorbed, and can greatly improve the absorptivity of dyestuff.
Further, it is one or both in aluminum triacetate or aluminium triformate that the present invention adopts color-fixing agent, color-fixing agent is hydrolysis gradually in dyeing bath, generation presents cationic alkaline aluminium salt, can absorb and fixing 1:2 type premetallized dye, the wet rubbing fastness of the superfine fiber chemical leather color after dyeing can reach more than 3.5 grades, and xerotripsis fastness can reach more than 4.5 grades, and dyestuff absorptivity can reach more than 99.5%.
The specific embodiment
Below by the specific embodiment, the present invention is described in further detail, but the present invention has more than and is limited to these examples.
Embodiment 1
1) according to the mass fraction, getting respectively the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, paregal O-35 of 1 part, the two dodecyl dimethyl ammoniums of chlorination of 3 parts, the yellow 4GN(of the 1:2 type premetallized dye manufacturer of 5 parts is Shanghai Ke Yan chemicals Co., Ltd) and the aluminum triacetate color-fixing agent of 1 part;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, then add the two dodecyl dimethyl ammoniums of water, paregal O-35 and chlorination, then adopt ammoniacal liquor (mass concentration is 28%) to regulate pH value to 7.0, at 80 ℃, process 30min; Add again the yellow 4GN of 1:2 type premetallized dye, after the 120min that dyes, adopt second acid for adjusting pH value to 5.0 at 90 ℃, continue dyeing 40min; Finally add aluminum triacetate, at 90 ℃, process 60min after washing and complete dyeing.
Embodiment 2
1) according to the mass fraction, getting respectively the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, the peregal O-25 of 2 parts, the chlorination double hexadecyl Dimethyl Ammonium of 1.5 parts, the red G(of the 1:2 type premetallized dye manufacturer of 2 parts is Shanghai Ke Yan chemicals Co., Ltd) and the aluminium triformate of 0.5 part;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, then add water, peregal O-25 and chlorination double hexadecyl Dimethyl Ammonium, then adopt ammoniacal liquor (mass concentration is 28%) to regulate pH value to 7.5, at 75 ℃, process 35min; Add again the red G of 1:2 type premetallized dye, after the 100min that dyes, adopt second acid for adjusting pH value to 5.5 at 95 ℃, continue dyeing 60min; Finally add aluminium triformate, at 95 ℃, process 30min after washing and complete dyeing.
Embodiment 3
1) according to the mass fraction, getting respectively the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, paregal O-20 of 2 parts, the two octadecyl Dimethyl Ammonium of chlorination of 2 parts, the black B(of the 1:2 type premetallized dye manufacturer of 6 parts is Shanghai Ke Yan chemicals Co., Ltd) and the aluminium triformate of 0.7 part;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, then add the two octadecyl Dimethyl Ammonium of water, paregal O-20 and chlorination, then adopt ammoniacal liquor (mass concentration is 28%) to regulate pH value to 7, at 70 ℃, process 37min; Add again the black B of 1:2 type premetallized dye, after the 110min that dyes, adopt second acid for adjusting pH value to 5 at 93 ℃, continue dyeing 50min; Finally add aluminium triformate, at 95 ℃, process 45min after washing and complete dyeing.
Embodiment 4
1) according to the mass fraction, get respectively the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, paregal O-35 of 1.5 parts and the mixture of peregal O-25, the two dodecyl dimethyl ammoniums of chlorination and the mixture of chlorination double hexadecyl Dimethyl Ammonium, the yellow 4GN of 1:2 type premetallized dye of 4 parts and mixture and the aluminum triacetate of 0.8 part and the mixture of aluminium triformate of the red G of 1:2 type premetallized dye of 2.5 parts;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, add again the two dodecyl dimethyl ammoniums of mixture, chlorination of water, paregal O-35 and peregal O-25 and the mixture of chlorination double hexadecyl Dimethyl Ammonium, then adopt ammoniacal liquor (mass concentration is 28%) to regulate pH value to 7.5, at 78 ℃, process 40min; The mixture that adds again the yellow 4GN of 1:2 type premetallized dye and the red G of 1:2 type premetallized dye, adopts second acid for adjusting pH value to 5.5 after the 105min that dyes at 90 ℃, continues dyeing 45min; Finally add the mixture of aluminum triacetate and aluminium triformate, at 93 ℃, process 40min after washing and complete dyeing.
Embodiment 5
1) according to the mass fraction, get respectively the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, peregal O-25 and the mixture of peregal O-20, the two dodecyl dimethyl ammoniums of chlorination of 1.8 parts and mixture, the red G of 1:2 type premetallized dye of 3 parts and mixture and the aluminum triacetate of 0.9 part and the mixture of aluminium triformate of the black B of 1:2 type premetallized dye of the two octadecyl Dimethyl Ammonium of chlorination of 1.2 parts;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, add again the two dodecyl dimethyl ammoniums of mixture, chlorination of water, peregal O-25 and peregal O-20 and the mixture of the two octadecyl Dimethyl Ammonium of chlorination, then adopt ammoniacal liquor (mass concentration is 28%) to regulate pH value to 7.5, at 72 ℃, process 38min; The mixture that adds again the red G of 1:2 type premetallized dye and the black B of 1:2 type premetallized dye, adopts second acid for adjusting pH value to 5 after the 115min that dyes at 95 ℃, continues dyeing 55min; Finally add the mixture of aluminum triacetate and aluminium triformate, at 90 ℃, process 55min after washing and complete dyeing.
Embodiment 6
1) according to the mass fraction, get respectively the mixture of the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, paregal O-35 of 1.8 parts and peregal O-20, the chlorination double hexadecyl Dimethyl Ammonium of 2.2 parts and the mixture of the two octadecyl Dimethyl Ammonium of chlorination, 1:2 type premetallized dye yellow 4GN, the red G of 1:2 type premetallized dye and the mixture of the black B of 1:2 type premetallized dye and the aluminum triacetate of 0.6 part of 3.5 parts;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, add again the mixture of the two octadecyl Dimethyl Ammonium of mixture, chlorination double hexadecyl Dimethyl Ammonium and chlorination of water, paregal O-35 and peregal O-20, then adopt ammoniacal liquor (mass concentration is 28%) to regulate pH value to 7.2, at 75 ℃, process 32min; The mixture that adds again 1:2 type premetallized dye yellow 4GN, the red G of 1:2 type premetallized dye and the black B of 1:2 type premetallized dye, adopts second acid for adjusting pH value to 5.3 after the 100min that dyes at 94 ℃, continues dyeing 47min; Finally add aluminum triacetate, at 94 ℃, process 52min after washing and complete dyeing.
Even dyeing of the present invention is deep and thorough, and surface colour is dense, and the wet rubbing fastness of the superfine fiber chemical leather color after dyeing can reach more than 3.5 grades, and xerotripsis fastness can reach more than 4.5 grades, and dyestuff absorptivity can reach more than 99.5%.
Claims (8)
1. for a height exhaustion decoration method for superfine fiber chemical leather dyeing, it is characterized in that, comprise the following steps:
1) according to the mass fraction, get respectively the superfine fiber polyurethane synthetic leather base fabric of 100 parts, the water of 1500 parts, surfactant, two tail type cationic surfactants of 1.5～3 parts, the dyestuff of 2～6 parts and the color-fixing agent of 0.5～1 part of nonionic of 1～2 part;
2) superfine fiber polyurethane synthetic leather base fabric is added to dyeing machine, then add surfactant and two tail type cationic surfactant of water, nonionic, then regulate pH value to 7.0～7.5, at 70～80 ℃, process 30～40min; Add again dyestuff, after the 100～120min that dyes, regulate pH value to 5.0～5.5 at 90～95 ℃, continue dyeing 40～60min; Finally add color-fixing agent, at 90～95 ℃, process 30～60min after washing and complete dyeing.
2. a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing according to claim 1, is characterized in that the pH value 7.0～7.5th in described step 1) adopts ammoniacal liquor to regulate.
3. a kind of exhaustion of the height for superfine fiber chemical leather dyeing decoration method according to claim 1, is characterized in that described step 2) in pH value 5.0～5.5th, employing acetic acid regulates.
4. a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing according to claim 1, it is characterized in that, the surfactant of described nonionic is the mixture of one or both arbitrary proportions in paregal O-35, peregal O-25, paregal O-20.
5. a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing according to claim 1, it is characterized in that, described two tail type cationic surfactants are the mixture of one or both arbitrary proportions in the two dodecyl dimethyl ammoniums of chlorination, chlorination double hexadecyl Dimethyl Ammonium, the two octadecyl Dimethyl Ammonium of chlorination.
6. a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing according to claim 1, is characterized in that, described dyestuff is 1:2 type premetallized dye.
7. a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing according to claim 6, it is characterized in that, described 1:2 type premetallized dye is the mixture of one or more arbitrary proportions in 1:2 type premetallized dye yellow 4GN, the red G of 1:2 type premetallized dye, the black B of 1:2 type premetallized dye.
8. a kind of height exhaustion decoration method for superfine fiber chemical leather dyeing according to claim 1, is characterized in that, described color-fixing agent is the mixture of one or both arbitrary proportions in aluminum triacetate, aluminium triformate.
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| CN104032599A (en) * | 2014-05-27 | 2014-09-10 | 上海应用技术学院 | Dyeing method of leather fibers |
| CN104032598A (en) * | 2014-05-27 | 2014-09-10 | 上海应用技术学院 | Non-dipping dyeing method of leather fibers |
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| CN106638033A (en) * | 2016-12-15 | 2017-05-10 | 上海华峰超纤材料股份有限公司 | Rapid dyeing method of liquid dye for suede ultrafine fiber synthetic leather |
| CN106638033B (en) * | 2016-12-15 | 2019-05-03 | 上海华峰超纤材料股份有限公司 | The liquid dyes fast staining of suede superfine fiber synthetic leather |
| CN109385919A (en) * | 2017-08-04 | 2019-02-26 | 福建大联新型材料发展有限公司 | A kind of preparation method of microfiber synthetic leather |
| CN108914633A (en) * | 2018-06-19 | 2018-11-30 | 兰州科天水性高分子材料有限公司 | A kind of aqueous polyurethane superfine fiber synthetic leather bass colouring method |
| CN108914633B (en) * | 2018-06-19 | 2021-07-30 | 兰州科天水性高分子材料有限公司 | Waterborne polyurethane superfine fiber synthetic leather Bass dyeing method |
| CN116590920A (en) * | 2023-04-10 | 2023-08-15 | 江苏科美新材料有限公司 | Manufacturing method of aqueous superfine fiber synthetic leather easy to dye |
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