CN101058898A - Spinning and dyeing method for viscose - Google Patents
Spinning and dyeing method for viscose Download PDFInfo
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- CN101058898A CN101058898A CN 200710049069 CN200710049069A CN101058898A CN 101058898 A CN101058898 A CN 101058898A CN 200710049069 CN200710049069 CN 200710049069 CN 200710049069 A CN200710049069 A CN 200710049069A CN 101058898 A CN101058898 A CN 101058898A
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Abstract
The present invention discloses a dyeing method of textile dyeing cellulose viscose, in order to overcome the drawbacks of the prior dyeing method can not guarantee the oxidation-reduction process be controlled effectively in colored cellulose viscose production. The method adds reducing agent and oxidizer into color paste, adds the standby color paste into viscose, the dyeing viscose is prepared after mixing fully, then the dyeing viscose forms reduced thread-line after ejected from spinnerette; in the textile process of reduced thread-line from forming to degumming or when the textile process is completed, the thread-line starts color development on the role of oxidant and acids or alkali, the color is fixed into desired color after reaction is completed. The invention breaks the traditional technology of the traditional ordinary cellulose viscose is colored before textile and is dyed and finished in late processes, it can achieve single filament dyeing, improve dyeing uniformity, color stability and color brightness of thread-line, and achieve the use standard of cotton embroidery thread, as well as decrease production costs significantly; the follow-up processing is pollution-free, the color of produces is bright, dyeing is uniform, hand feeling is comfortable and application is wide.
Description
Technical field
The present invention relates to spin the artificial fibre that in the experienced process strand is dyeed, be used for the colouring method of spinning dyeing viscose production process viscose glue specifically.
Background technology
Artificial fibre claims artificial silk, viscose, regenerated celulose fibre again, annotates look or later stage dyeing and finishing processing by viscose glue before spinning, and can make versicolor artificial fiber product, is widely used in that look is knitted, family is spun, metallized thread, floss silk, yarn field.
Dye after the strand moulding and be called for short that to spin poststaining be to eliminate technology, have drawbacks such as complex process, cost height, blowdown flow rate are big.So proposed to spin preceding coloring process in recent years, that is, pigment is injected viscose glue becomes coloured viscose glue, carries out spinning again.
Before spinning, tradition annotates the painted silk that color method is produced, because used granules of pigments is bigger, the granularity heterogeneity, bad dispersibility in viscose glue, cause spinnability poor, the production cost height, product coloured light dimness, and can't be used for floss silk production (main) because quality such as glossiness, the feel etc. of the floss silk of being made do not reach instructions for use; The residue dye liquor that later stage dyeing and finishing processing need be drained a large amount of is unfavorable for environmental protection, also will increase water, electricity, vapour energy resource consumption; Later stage dyeing and finishing processing also is subjected to factor affecting such as artificial fiber product quality, dyeing and finishing technology fluctuation easily, causes problems such as dyeing is inhomogeneous, COLOR FASTNESS difference.
Someone has mentioned coloured viscose and the production method that adopts indigoid, anthraquinone class reducing dye in patent.This method be with indigoid, anthraquinone class reducing dye is reduced into leuco compound salt pair viscose glue under alkali condition painted, makes coloured viscose by spinning, concise and oven dry.Because the reducing dye that is adopted in this method mill base does not use oxidant, the viscose glue match color procedure is not taked control measure yet, also just can not effectively control the oxidation-reduction process of indigoid, anthraquinone class reducing dye, the coloured viscose color instability, the spinnability that obtain are poor, can't realize industrialized production.
Spinning dyeing viscose producer ratio juris is: preparation reduction dye liquor and mill base, then it is mixed with viscose glue, (process from the spray silk to concise end) strand oxidative color-developing under oxidant and acid or alkali environment obtains spinning dyeing viscose through spinning in spinning experienced process.What the present invention proposed is exactly the colouring method that is formulated into the strand process color from mill base.
Summary of the invention
The present invention is intended to the above-mentioned defective at colouring method existence in existing coloured viscose production method, and a kind of viscose fiber spinning dyeing method is provided, and adopts the present invention can realize big production of coloured man-made fibres industryization and deep processed product production thereof.By the research to dyeing mechanism, painted before the common viscose fiber that breaks traditions is spun, the traditional handicraft of later stage dyeing and finishing processing is directly produced coloured viscose.Adopt the present invention can realize monofilament dyeing, improve the dyeing uniformity of coloured strand, COLOR FASTNESS, colour brightness, the rich colors kind reaches the use standard of floss silk; Significantly reduce production costs simultaneously, easy to use, following process is pollution-free, the protection environment; Dyeing quality satisfies market demands, beautiful in colour, even dyeing, comfortable feel, is widely used.
For achieving the above object, the technical solution used in the present invention is as follows:
The viscose fiber spinning dyeing method, processing step comprises mill base preparation, viscose glue color matching, dying viscose glue, it is characterized in that: in the mill base preparation process, according to the requirement of viscose color, take by weighing one or more dyestuffs, its mixing is distributed in the demineralized water, add alkaline solution, add reductant and oxidant in solution, filter with demineralized water constant volume, solution at last, it is standby to make mill base; In viscose glue color matching operation, standby color paste is joined in the viscose glue, after fully mixing, make the dyeing viscose glue, the dyeing viscose glue forms the reduction strand from the spinning head ejection of board; The reduction strand concise spins the experienced process or when spinning experienced process and finishing from being formed into, under oxidant and acid or alkali effect, dye molecule in the dye liquor is oxidized separates out, be evenly distributed on fibrous inside, form hydrogen bonded with fiber molecule, strand begins colour developing, is fixed as the expection color after reacting completely, and finishes the dyeing overall process.
In viscose glue color matching operation; elder generation packs standby color paste in the storage device; and secluding air protection; the mill base that adds certain volume according to the viscose glue flow in proportion is in the viscose glue pipe; after the process mixing arrangement fully mixes; enter in the viscose glue surge tank again and mix, the dyeing viscose glue that mixes is carried with gumming pump, delivers to the board spinning by static mixer.
Described dyestuff adopts reducing dye, SULPHUR DYES or water-insoluble organic dyestuff.
The addition of described reductant and oxidant is respectively 1～5 times and 0.5～2 times of reaction molal quantity.
Described reductant is sodium hydrosulfite or thiourea dioxide.
Described oxidant is H
2O
2, NaNO
2, sodium dichromate or sodium chlorite.
Described alkaline solution can be used the NaOH aqueous solution.
Liquor capacity behind the constant volume is 0.5%～10% of a viscose glue volume.
Mill base concentration of the present invention is 0.005%～10%; Contain alkali 2～6%.
The viscose glue of oxidation under acid, alkali environment:
First fibre: 7.9～8.3%
Degree of ripeness: 8.0～12.0ml
Contain alkali: 6.0 ± 1.0%
Surface tension: 42～56 (dymes/cm)
Viscosity: 25～45 seconds
The slurry kind of viscose glue stoste comprises wood pulp, cotton pulp, bamboo pulp and a kind of in the combination arbitrarily mutually.The present invention is applicable to the dyeing of any viscose product, comprises viscose staple fibre, long fiber.
The device that comprises in the mill base preparation of the present invention has dye liquor blend tank, dye liquor storage tank, grinding mill, dye liquor filter, dye liquor filter pump, circulating pump, frequency converter.
The device that comprises in the viscose glue color matching of the present invention has viscose glue delivery pump, viscose glue surge tank, static mixer, measuring pump, electromagnetic flowmeter, differential pressure transmitter, electrical equipment automatic control system.
Beneficial effect of the present invention shows:
The present invention is owing to add reductant and oxidant in dyestuff, the dyeing viscose glue that makes thus can realize that the later stage promptly spins the oxidation reaction of experienced process, make oxidized the separating out of dye molecule in the dye liquor in the dyeing viscose glue, be evenly distributed on fibrous inside, form hydrogen bonded with fiber molecule, guaranteed the production requirement of spinning pre reduction, spinning experienced oxidative color-developing thus.
And, experienced process color and final fixation have been guaranteed to spin by making oxidation-reduction process be protected to the control of the control of the control of the addition of reductant and oxidant, mill base solution and viscose glue volume ratio, mill base concentration, mill base and viscose glue preparation and the control that mixes etc.
This method can realize industrialized production and deep processed product production thereof, and the traditional handicraft of painted later stage dyeing and finishing processing was directly produced coloured viscose before the common viscose fiber that breaks traditions was spun.And possess following advantage:
1, realize monofilament dyeing, improve dyeing uniformity, the COLOR FASTNESS of coloured strand, colour brightness, the rich colors kind reaches the use standard of floss silk;
2, significantly reduce production costs, easy to use, following process is pollution-free, the protection environment;
3, dyeing quality satisfies market demands, beautiful in colour, even dyeing, comfortable feel, is widely used.
4, can realize the big production of technology, good spinnability, production cost is low.
Adopt the present invention except a small amount of input of early stage Study on Technology and permanent plant, the also relative traditional dyeing technology with the input of post processing chemical industry material of dyestuff in process of production is less greatly, reduce production process, reduced energy consumption, saved production cost.Realize the dyeing waste water zero-emission, exceed the direct economy value of using far away in the economic worth of expenses of environmental protection minimizing and the considerable influence that protection brings to social environment.
Description of drawings
Fig. 1 is a process chart of the present invention
The specific embodiment
The present invention proposes is colouring method in the spinning dyeing viscose production process, the dyed through spinning and scouring procedure method of the definite viscose of saying so.
The spinning dyeing viscose production method that the present invention mentions is to add reductant and oxidant in dyestuff, and with above-mentioned dyestuff and the mixed viscose glue that must dye of viscose glue, the seeing-off deck spinning obtains the reduction strand; The reduction strand concise spins the experienced process or when spinning experienced process and finishing, oxidation under acid or alkali environment, colour developing form spinning dyeing viscose from being formed into.
Strand oxidation under acid or alkali environment is to carry out process choice according to the difference of dyestuff, the oxidation under acid environment of some dyestuff, the oxidation under the alkali environment of some dyestuff.Because after viscose glue is sprayed onto acid bath groove from shower nozzle, acid solution itself in it is exactly an acid environment, add sulfuric acid, dyeing viscose glue in the acid environment oxidation just begins oxidation reaction in acid bath groove, dye molecule in the dye liquor is oxidized separates out, be evenly distributed on fibrous inside, form hydrogen bonded, begin colour developing with fiber molecule.Process color spins experienced process through whole, is the expection color up to fixation.
Why the present invention is called dyed through spinning and scouring procedure, and its reason is that the strand color is to manifest in spinning experienced process, and final quality is after spinning white silk.When dye liquor is added viscose glue, and any time in oxidation reaction process, its color all is different from the expection color.This feature is obviously distinguished and is spun the preceding look technology of annotating, and in the notes look technology, adds the pigment of what color in advance before spinning, and the later stage just obtains the strand of what color, therefore is called painted.Painted silk is bigger owing to used granules of pigments, the granularity heterogeneity, and bad dispersibility in viscose glue causes spinnability poor, the production cost height, product coloured light dimness, and can't be used for floss silk production; The residue dye liquor that later stage dyeing and finishing processing need be drained a large amount of is unfavorable for environmental protection, also will increase water, electricity, vapour energy resource consumption; Later stage dyeing and finishing processing also is subjected to factor affecting such as artificial fiber product quality, dyeing and finishing technology fluctuation easily, causes problems such as dyeing is inhomogeneous, COLOR FASTNESS difference.
The present invention is owing to add oxidant in dyestuff, can realize that the later stage promptly spins the oxidation reaction of experienced process, make oxidized the separating out of dye molecule in the dye liquor in the dyeing viscose glue, be evenly distributed on fibrous inside, form hydrogen bonded with fiber molecule, guaranteed the production requirement of spinning pre reduction, spinning experienced oxidative color-developing thus; By making oxidation-reduction process be protected, experienced process color and final fixation have been guaranteed to spin to the control of the control of the control of the addition of reductant and oxidant, mill base solution and viscose glue volume ratio, mill base concentration, mill base and viscose glue preparation and the control that mixes etc.Adopt the present invention to improve spinnability, coloured light degree, and removed the later stage dyeing and finishing technology, reduce discharging of waste liquid and energy resource consumption, and can be directly used in floss silk production.
Embodiment 1: the dyed through spinning and scouring procedure method
Viscose fiber spinning dyeing method, processing step comprise mill base preparation, viscose glue color matching, dying viscose glue.In the mill base preparation process,, take by weighing one or more dyestuffs according to the requirement of viscose color, its mixing is distributed in the demineralized water, adds alkaline solution, in solution, add reductant and oxidant, filter with demineralized water constant volume, solution at last, it is standby to make mill base; In viscose glue color matching operation, standby color paste is joined in the viscose glue, after fully mixing, make the dyeing viscose glue, the dyeing viscose glue forms the reduction strand from the spinning head ejection of board; The reduction strand concise spins the experienced process or when spinning experienced process and finishing from being formed into, under oxidant and acid or alkali effect, dye molecule in the dye liquor is oxidized separates out, be evenly distributed on fibrous inside, form hydrogen bonded with fiber molecule, strand begins colour developing, is fixed as the expection color after reacting completely, and finishes the dyeing overall process.
In viscose glue color matching operation; elder generation packs standby color paste in the storage device; and secluding air protection; the mill base that adds certain volume according to the viscose glue flow in proportion is in the viscose glue pipe; after the process mixing arrangement fully mixes; enter in the viscose glue surge tank again and mix, the dyeing viscose glue that mixes is carried with gumming pump, delivers to the board spinning by static mixer.
Described dyestuff adopts reducing dye, SULPHUR DYES or water-insoluble organic dyestuff.
The addition of described reductant and oxidant is respectively 1～5 times and 0.5～2 times of reaction molal quantity.
Described reductant is sodium hydrosulfite or thiourea dioxide.
Described oxidant is H
2O
2, NaNO
2, sodium dichromate or sodium chlorite.
Described alkaline solution can be used the NaOH aqueous solution.
Liquor capacity behind the constant volume is 0.5%～10% of a viscose glue volume.
Mill base concentration of the present invention is 0.005%～10%; Contain alkali 2～6%.
The device that comprises in the mill base preparation of the present invention has dye liquor blend tank, dye liquor storage tank, grinding mill, dye liquor filter, dye liquor filter pump, circulating pump, frequency converter.
The device that comprises in the viscose glue color matching of the present invention has viscose glue delivery pump, viscose glue surge tank, static mixer, measuring pump, electromagnetic flowmeter, differential pressure transmitter, electrical equipment automatic control system.
Embodiment 2: the dyeing viscose glue of acid environment oxidation
First fibre: 7.9～8.3%
Degree of ripeness: 8.0～12.0ml
Contain alkali: 6.0 ± 1.0%
Surface tension: 42～56 (dymes/cm)
Viscosity: 25～45 seconds
Embodiment 3: the colouring method under the acid environment oxidation
A, mill base preparation: according to the requirement of viscose color, take by weighing a certain amount of one or more dyestuffs according to concentration ratio, its mixing is distributed in the demineralized water, add alkaline solution,, in solution, add reductant and oxidant again according to the reaction mol ratio, use the demineralized water constant volume at last, solution is filled in the storage tank again, crosses and filter to remove granule foreign, it is standby to make mill base;
B, viscose glue color matching: standby color paste is packed in the storage device, and secluding air protection, according to liquor capacity is that 0.5%～10% ratio of viscose glue volume adds the dye liquor of certain volume in the viscose glue pipe, after the process mixing arrangement fully mixes, enter again in the viscose glue surge tank and mix, the viscose glue that will dye is carried with gumming pump, delivers to the board spinning by the secondary static mixer;
C, dyeing: after dye molecule in the dye liquor and viscose glue molecule fully mix, enter in the acid bath through spinneret orifice, under oxidant and acid effect, the dye molecule in the dye liquor is oxidized separates out, and is evenly distributed on fibrous inside, forms hydrogen bonded with fiber molecule.
D, fixation: then by spin continuously, semicontinuous spin or the special-shaped flat production process of spinning is carried out spinning production, form dyed through spinning and scouring procedure spinning cake or skein silk; Spinning cake or skein silk send concise operation, finally are fixed into the color of expection through peroxidization,, through compress and wash, winder after the oven dry, damping, make the spinning dyeing viscose product.
Embodiment 4: the dyeing viscose glue of alkali environmental oxidation
First fibre: 7.9～8.3%
Degree of ripeness: 8.0～12.0ml
Contain alkali: 6.0 ± 1.0%
Surface tension: 42～56 (dymes/cm)
Viscosity: 25～45 seconds
Embodiment 5: the spinning process of alkali environmental oxidation
A, mill base preparation: according to the requirement of viscose color, take by weighing a certain amount of one or more dyestuffs according to concentration ratio, its mixing is distributed in the demineralized water, add alkaline solution,, in solution, add reductant and oxidant again according to the reaction mol ratio, use the demineralized water constant volume at last, solution is filled in the storage tank again, crosses and filter to remove granule foreign, it is standby to make mill base;
B, viscose glue color matching: standby color paste is packed in the storage device; and secluding air protection; the dye liquor that adds certain volume according to the viscose glue flow in proportion is in the viscose glue pipe; after the process mixing arrangement fully mixes; enter again in the viscose glue surge tank and mix; the viscose glue that will dye is carried with gumming pump, delivers to the board spinning by the secondary static mixer, forms spinning cake or skein silk.
C, dyeing, fixation: behind spinning cake or the skein silk disacidify, it is inserted alkaline environment, such as alkali cleaning, under the effect of oxidant and alkali, the dye molecule in the dye liquor is oxidized separates out, and is evenly distributed on fibrous inside, form hydrogen bonded with fiber molecule, begin colour developing this moment, and place the certain hour rear oxidation and react completely and finally be fixed into the color of expection, obtains the spinning dyeing viscose product.
The yellow artificial fibre specific embodiment of embodiment 6:H015:
1. according to the weight of producing coloured artificial fibre, calculate required dye dosage, in the fine ratio of first is added.
2. dyestuff is scattered in an amount of demineralized water; add an amount of alkali; add reductant and oxidant again; the addition of reductant and oxidant is respectively 1～5 times and 0.5～2 times of reaction molal quantity; use the demineralized water constant volume then, the liquor capacity behind the constant volume is 0.5%～10% of a viscose glue volume, solution is filled in the storage tank again; remove impurity particle, the top adds nitrogen protection.Use up as early as possible after dye liquor prepares, be advisable to be no more than three days.
3. with measuring pump dye liquor is joined in the viscose glue pipeline, locking instantaneous addition of dye liquor and viscose glue flow-rate ratio, the viscose glue behind the adding dye liquor at first mixes by one section static mixer, enters in the spinning glue jar to mix again, carry with gumming pump then, by the secondary static mixer to the board spinning.
4. carry out spinning operation by normal process, send concise operation, through compress and wash, winder after the oven dry, damping, can obtain the yellow artificial fibre of finished product H015.
5. will be 4. in the step spinning cake after the damping directly become ternary, twisting, skeining or become tube, can obtain the yellow floss silk of finished product H015.
Claims (10)
1, viscose fiber spinning dyeing method, processing step comprises mill base preparation, viscose glue color matching, dying viscose glue, it is characterized in that: in the mill base preparation process, according to the requirement of viscose color, take by weighing one or more dyestuffs, its mixing is distributed in the demineralized water, add alkaline solution, add reductant and oxidant in solution, filter with demineralized water constant volume, solution at last, it is standby to make mill base; In viscose glue color matching operation, standby color paste is joined in the viscose glue, after fully mixing, make the dyeing viscose glue, the dyeing viscose glue forms the reduction strand from the spinning head ejection of board; The reduction strand concise spins the experienced process or when spinning experienced process and finishing from being formed into, under oxidant and acid or alkali effect, dye molecule in the dye liquor is oxidized separates out, be evenly distributed on fibrous inside, form hydrogen bonded with fiber molecule, strand begins colour developing, is fixed as the expection color after reacting completely, and finishes the dyeing overall process.
2, viscose fiber spinning dyeing method according to claim 1; it is characterized in that: in viscose glue color matching operation; elder generation packs standby color paste in the storage device; and secluding air protection; the mill base that adds certain volume according to the viscose glue flow in proportion through after mixing arrangement fully mixes, enters in the viscose glue surge tank again and mixes in the viscose glue pipe; the dyeing viscose glue that mixes is carried with gumming pump, delivers to the board spinning by static mixer.
3, viscose fiber spinning dyeing method according to claim 1 is characterized in that: described dyestuff adopts reducing dye, SULPHUR DYES or water-insoluble organic dyestuff.
4, viscose fiber spinning dyeing method according to claim 1 is characterized in that: described reductant is sodium hydrosulfite or thiourea dioxide.
5, viscose fiber spinning dyeing method according to claim 1 is characterized in that: described oxidant is H
2O
2, NaNO
2, sodium dichromate or sodium chlorite.
6, according to claim 1,4 or 5 described viscose fiber spinning dyeing methods, it is characterized in that: the addition of described reductant and oxidant is respectively 1～5 times and 0.5～2 times of reaction molal quantity.
7, viscose fiber spinning dyeing method according to claim 1 is characterized in that: described alkaline solution is the NaOH aqueous solution.
8, viscose fiber spinning dyeing method according to claim 1 is characterized in that: the liquor capacity behind the constant volume is 0.5%～10% of a viscose glue volume.
9, viscose fiber spinning dyeing method according to claim 1 is characterized in that: mill base concentration is 0.005%～10%; Contain alkali 2～6%.
10, viscose fiber spinning dyeing method according to claim 1 is characterized in that: the dyeing viscose glue of oxidation under acid or alkali environment:
First fibre: 7.9～8.3%; Degree of ripeness: 8.0～12.0ml; Contain alkali: 6.0 ± 1.0%; Surface tension: 42～56 (dymes/cm); Viscosity: 25～45 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710049069 CN101058898A (en) | 2007-05-11 | 2007-05-11 | Spinning and dyeing method for viscose |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710049069 CN101058898A (en) | 2007-05-11 | 2007-05-11 | Spinning and dyeing method for viscose |
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| CN101058898A true CN101058898A (en) | 2007-10-24 |
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ID=38865199
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| CN 200710049069 Pending CN101058898A (en) | 2007-05-11 | 2007-05-11 | Spinning and dyeing method for viscose |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713103A (en) * | 2009-12-17 | 2010-05-26 | 河北吉藁化纤有限责任公司 | Production method of colored bamboo pulp viscose fiber |
| CN109267320A (en) * | 2018-08-29 | 2019-01-25 | 苏州世名科技股份有限公司 | A method of it improves without dye viscose rayon pitch black degree |
-
2007
- 2007-05-11 CN CN 200710049069 patent/CN101058898A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713103A (en) * | 2009-12-17 | 2010-05-26 | 河北吉藁化纤有限责任公司 | Production method of colored bamboo pulp viscose fiber |
| CN109267320A (en) * | 2018-08-29 | 2019-01-25 | 苏州世名科技股份有限公司 | A method of it improves without dye viscose rayon pitch black degree |
| CN109267320B (en) * | 2018-08-29 | 2021-04-30 | 苏州世名科技股份有限公司 | Method for improving blackness of non-dyed viscose fibers |
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