CN115821409A - Method for improving blackness of stock solution coloring viscose fibers - Google Patents
Method for improving blackness of stock solution coloring viscose fibers Download PDFInfo
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- CN115821409A CN115821409A CN202211319200.4A CN202211319200A CN115821409A CN 115821409 A CN115821409 A CN 115821409A CN 202211319200 A CN202211319200 A CN 202211319200A CN 115821409 A CN115821409 A CN 115821409A
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- stock solution
- viscose
- blackness
- zirconium dioxide
- fiber
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- 239000000835 fiber Substances 0.000 title claims abstract description 77
- 229920000297 Rayon Polymers 0.000 title claims abstract description 55
- 239000011550 stock solution Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004040 coloring Methods 0.000 title claims abstract description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 41
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000009987 spinning Methods 0.000 claims abstract description 26
- 239000006185 dispersion Substances 0.000 claims abstract description 20
- 239000006229 carbon black Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000002562 thickening agent Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 7
- 230000001112 coagulating effect Effects 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract 2
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 239000003607 modifier Substances 0.000 claims description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 6
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 6
- 229960001763 zinc sulfate Drugs 0.000 claims description 6
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 6
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- WPKYZIPODULRBM-UHFFFAOYSA-N azane;prop-2-enoic acid Chemical compound N.OC(=O)C=C WPKYZIPODULRBM-UHFFFAOYSA-N 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 230000003009 desulfurizing effect Effects 0.000 claims 2
- 229920002050 silicone resin Polymers 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000004753 textile Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000004043 dyeing Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003738 black carbon Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Artificial Filaments (AREA)
Abstract
The invention relates to the technical field of textile fiber preparation, in particular to a method for improving blackness of stock solution coloring viscose, which comprises the following steps: mixing and stirring a thickening agent, a surfactant and deionized water, adding zirconium dioxide, stirring to obtain slurry with uniformly dispersed raw materials, and feeding the slurry into a grinding machine for grinding to obtain a zirconium dioxide dispersion liquid; mixing carbon black and the zirconium dioxide dispersion according to the weight ratio of 20: 1-3 to obtain a mixed solution, adding the mixed solution and a spinning viscose stock solution into a static mixer for injection before spinning for continuous blending to obtain a uniformly mixed viscose stock solution, metering the obtained viscose stock solution by a metering pump, and feeding the viscose stock solution into a coagulating bath for spinning by a spinning nozzle to obtain the stock solution colored viscose fiber with the titer less than 2.2 dtex. The invention can obtain the blackness similar to that of dyed fiber, does not influence the strength and spinnability of the fiber, and can effectively meet the market demand of black fiber.
Description
Technical Field
The invention relates to the technical field of textile fiber preparation, in particular to a method for improving blackness of stock solution coloring viscose fibers.
Background
At present, the mainstream fiber coloring method is to dye fibers or yarns, the traditional dyeing process has more processes, high water and power consumption, and the product is easy to have color difference and color fastness deviation and the like. The cost of the viscose fiber prepared by adopting the conventional dyeing method is 6000-10000 yuan per ton, the cost of the black viscose fiber prepared by adopting the stock solution coloring mode is 800-1500 yuan per ton, and the energy consumption and the cost can be effectively controlled by adopting the stock solution coloring mode to prepare the viscose fiber, so that the method for preparing the colored fiber by adopting the stock solution coloring mode has wide application prospect and is gradually popularized.
However, the blackness of the fiber prepared by the conventional stock solution coloring method is difficult to obtain the effect similar to that of the dyed fiber. In the prior art, the method of increasing the addition amount of carbon black, modifying the carbon black, optimizing the quality of the carbon black and adding other color-mixing colors is generally adopted to increase the fiber blackness, the cost can be increased by the method, and the fiber blackness is difficult to increase again after reaching the bottleneck. At present, the method for improving the blackness of the fibers in the market is acid etching, wherein stock solution coloring viscose fibers are placed in an acid solution to be soaked, and the surfaces of the fibers are etched, so that the originally regular surfaces of the fibers form hollow shapes, the reflection of light is reduced, and the blackness of the stock solution coloring viscose fibers is improved.
Disclosure of Invention
The invention aims to provide a method for improving the blackness of stock solution colored viscose fibers so as to solve the problems in the background technology.
The invention is realized by the following technical scheme:
a method for improving the blackness of dope-dyed viscose fibers comprises the following steps:
s1, preparing a zirconium dioxide dispersion liquid: the zirconium dioxide dispersion liquid comprises the following components in parts by mass: 50-60 parts of zirconium dioxide, 1-2 parts of thickening agent, 2-5 parts of surfactant and 33-47 parts of deionized water;
according to the component ratio, adding the thickening agent, the surfactant and the deionized water into a blending tank, mixing and stirring to uniformly disperse the thickening agent and the surfactant, adding the zirconium dioxide, stirring to obtain slurry, and grinding the slurry in a grinding machine to obtain a zirconium dioxide dispersion liquid;
s2, preparing stock solution coloring viscose fibers: mixing carbon black and the zirconium dioxide dispersion according to the weight ratio of 20: 1-3 to obtain a mixed solution, adding the mixed solution and a spinning viscose stock solution into a static mixer for injection before spinning for continuous blending to obtain a uniformly mixed viscose stock solution, metering the obtained viscose stock solution by a metering pump, feeding the viscose stock solution into a coagulating bath for spinning by a spinning nozzle, and sequentially carrying out the steps of drafting, cutting, primary washing, desulfurization, secondary washing, acid washing, tertiary washing, oiling, dehydration and drying to obtain the stock solution colored viscose fiber with the titer of less than 2.2 dtex.
Because the zirconium dioxide has the characteristics of acid and alkali resistance and has small influence on the color of the fiber, the roughness of the fiber can be increased by mixing the zirconium dioxide with the black carbon, and the absorption and diffuse reflection degrees of light are changed to improve the blackness of the fiber.
Preferably, the zirconium dioxide is powdery particles, and the particle size of the zirconium dioxide is 20-50 μm.
Preferably, the particle diameter of the zirconium dioxide dispersion is 1.0 to 3.0 μm, and the average particle diameter thereof is less than 1.5. Mu.m.
Preferably, the carbon black has an average particle size of less than 300nm.
Preferably, the amount of carbon black injected in the injection device before spinning is 3.5 to 4% (for methyl cellulose).
Preferably, the coagulating bath is an aqueous solution prepared from sulfuric acid, sodium sulfate and zinc sulfate, wherein the sulfuric acid content is 110-130 g/L, the sodium sulfate content is 330-350 g/L, and the zinc sulfate content is 11-12 g/L.
Preferably, the desulfurizer adopted in the desulfurization step is 6-8 g/L of NaOH solution; the reagent used in the acid washing step is sulfuric acid.
Preferably, the thickener is selected from acrylic thickeners or clay-based thickeners.
As a further scheme of the invention, a modifier is added into the spinning oil agent adopted in the oiling step, and the concentration of the spinning oil agent is 8-9 g/L.
Preferably, the modifier comprises a deepening agent, the deepening agent can accelerate the dispersion of carbon black and zirconium dioxide and is used for optimizing the color depth of the fibers, the deepening agent is organic silicon resin or a polymer based on ammonium acrylate, and the concentration of the deepening agent is 1-2 g/L.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts zirconium dioxide and a deepening agent to improve the blackness of the fiber, can obtain the blackness similar to that of the dyed fiber, does not influence the strength and spinnability of the fiber, and can effectively meet the market demand of the black fiber.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention.
Example 1:
the embodiment provides a method for improving blackness of dope-dyed viscose fibers, which comprises the following steps:
s1, preparing a zirconium dioxide dispersion liquid: the zirconium dioxide dispersion comprises the following components in parts by mass: 55 parts of zirconium dioxide, 2 parts of acrylic thickener, 4 parts of surfactant and 39 parts of deionized water; because the zirconium dioxide has the characteristics of acid and alkali resistance and has small influence on the color of the fiber, the roughness of the fiber can be increased by mixing the zirconium dioxide with the black carbon, and the absorption and diffuse reflection degrees of light are changed to improve the blackness of the fiber;
according to the proportion of the components, adding a thickening agent, a surfactant and deionized water into a blending tank, mixing and stirring to uniformly disperse the thickening agent and the surfactant, adding 20-50 mu m of zirconium dioxide powder, stirring to obtain slurry, and grinding the slurry in a grinding machine to obtain a zirconium dioxide dispersion liquid, wherein the particle size of particles in the zirconium dioxide dispersion liquid is 1.0-3.0 mu m, and the average particle size of the particles is less than 1.5 mu m;
s2, preparing stock solution coloring viscose fibers: mixing carbon black and the zirconium dioxide dispersion according to the weight ratio of 20:1 to obtain a mixed solution, adding the mixed solution and a spinning viscose stock solution into a static mixer for pre-spinning injection to be continuously blended to obtain a uniformly mixed viscose stock solution, wherein the injection amount of carbon black in pre-spinning injection equipment is 4 percent (to alpha fiber), the obtained viscose stock solution is metered by a metering pump and then is sent into a coagulation bath for spinning through a spinning nozzle, and the coagulation bath is an aqueous solution prepared from sulfuric acid, sodium sulfate and zinc sulfate, wherein the sulfuric acid content is 130g/L, the sodium sulfate content is 340g/L, and the zinc sulfate content is 11-12 g/L, and the target stock solution colored viscose fiber is prepared through the steps of drawing, cutting, primary water washing, desulfurization treatment by adopting 6-8 g/L NaOH solution, secondary water washing, sulfuric acid washing, tertiary water washing, oiling, dehydration and drying in sequence.
The dope-dyed viscose fiber prepared in this embodiment is tested, sampled in parallel and tested, the number of samples is 5-10 times, and the test results are as follows: the titer of the dope dyed viscose fiber prepared by the embodiment is 1.33 to 1.67dtex, the length is 32 to 38mm, the dry breaking strength is not lower than 2.3cN/dtex, the dry breaking elongation is 21 +/-2 percent, the oil content is 0.35 to 0.45 percent, the moisture regain of the product is 13 percent, the defect content is not more than 1.5mg/100g, the residual sulfur content is not more than 8mg/100g, the whiteness is not more than 2 percent, and the color fastness is not less than 4 grade.
Example 2:
the embodiment provides a method for improving blackness of dope dyed viscose fibers, and the difference between the embodiment and the embodiment 1 is that the amount of zirconium dioxide is increased to 0.4%, that is, the mass ratio of carbon black to zirconium dioxide dispersion is 10:1, the rest is the same as example 1.
Example 3:
the embodiment provides a method for improving blackness of dope-dyed viscose fibers, which is different from embodiment 2 in that a modifier is added into a spinning oil agent adopted in an oiling step in the embodiment, the concentration of the spinning oil agent is 8-9 g/L, the modifier comprises a deepening agent with the concentration of 1-2 g/L, the deepening agent is an organic silicon resin or a polymer based on ammonium acrylate, the deepening agent can accelerate dispersion of carbon black and zirconium dioxide and is used for optimizing fiber color depth, and other steps are consistent with embodiment 2.
Comparative example 1: zirconium dioxide and a deepening agent are not added, and the stock solution colored viscose fiber is prepared by adopting the conventional injection before spinning in the rest steps.
Comparative example 2: the black viscose fiber is prepared by conventional dyeing with dye.
The blackness and performance of the fibers prepared in examples 1 to 3 and comparative examples 1 to 2 were measured, and the results are shown in the following table.
Carbon black | Deepening agent | Zirconium dioxide | K/S | L | a | b | Fiber strength | |
Example 1 | 4.0% | / | 0.2% | 34.56 | 12.98 | 0.08 | -0.41 | 2.31cN |
Example 2 | 4.0% | / | 0.4% | 36.47 | 12.54 | 0.07 | -0.51 | 2.29cN |
Example 3 | 4.0% | 1~2g/L | 0.4% | 37.42 | 12.42 | 0.06 | -0.52 | 2.24cN |
Comparative example 1 | 4.0% | / | / | 30.25 | 13.56 | 0.08 | -0.34 | 2.34cN |
Comparative example 2 | / | / | / | 37.38 | 12.43 | 0.04 | -0.54 | / |
As can be seen from the table above, the strength of the dope dyed viscose fiber provided by the invention is similar to that of the black fiber prepared in the comparative example 1, and the blackness is obviously widened; along with the increase of the using amount of the zirconium dioxide, the K/S value of the obtained fiber is increased along with the increase of the concentration, the L value is gradually reduced, and the blackness is improved to a certain extent; compared with the black viscose fiber prepared by conventional dyeing, the dope dyed viscose fiber containing the deepening agent provided by the embodiment 3 of the invention has similar K/S value and L value, so that the dope dyed viscose fiber provided by the invention can obtain the similar blackness to the conventional dyed viscose fiber.
In conclusion, the zirconium dioxide is adopted to increase the roughness of the fiber and increase the diffuse reflection degree of light, meanwhile, the modifier is adopted to improve the blackness of the fiber, compared with the common method of improving the addition amount of carbon black, modifying the carbon black and adding other color-mixing colors, the method can obtain the blackness similar to that of the dyed fiber, does not influence the strength and spinnability of the fiber, and can effectively meet the market demand of the black fiber.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A method for improving the blackness of dope-dyed viscose fibers is characterized by comprising the following steps:
s1, preparing a zirconium dioxide dispersion liquid: the zirconium dioxide dispersion liquid comprises the following components in parts by mass: 50-60 parts of zirconium dioxide, 1-2 parts of a thickening agent, 2-5 parts of a surfactant and 33-47 parts of deionized water;
mixing and stirring the thickening agent, the surfactant and the deionized water according to the component ratio, adding zirconium dioxide, stirring to obtain slurry with uniformly dispersed raw materials, and grinding the slurry in a grinding machine to obtain zirconium dioxide dispersion liquid;
s2, preparing stock solution coloring viscose fibers: mixing carbon black and the zirconium dioxide dispersion according to the weight ratio of 20: 1-3 to obtain a mixed solution, adding the mixed solution and a spinning viscose stock solution into a static mixer for injection before spinning for continuous blending to obtain a uniformly mixed viscose stock solution, metering the obtained viscose stock solution by a metering pump, feeding the viscose stock solution into a coagulating bath for spinning by a spinning nozzle, and sequentially carrying out the steps of drafting, cutting, primary washing, desulfurization, secondary washing, acid washing, tertiary washing, oiling, dehydration and drying to obtain the stock solution colored viscose fiber with the titer of less than 2.2 dtex.
2. The method for improving the blackness of dope-dyed viscose fibers as claimed in claim 1, wherein the zirconium dioxide is in the form of powder with a particle size of 20 to 50 μm.
3. The method for improving the blackness of dope-dyed viscose fibers according to claim 1, wherein the zirconia dispersion has particles with a diameter of 1.0 to 3.0 μm and an average diameter of less than 1.5 μm.
4. The method for improving the jetness of a dope-dyed viscose fiber of claim 1, wherein the carbon black has an average particle size of less than 300nm.
5. The method for improving the blackness of dope-dyed viscose fibers as claimed in claim 1, wherein the carbon black is injected in the injection apparatus before spinning in an amount of 3.5 to 4% (to A fiber).
6. The method for improving the blackness of dope-dyed viscose fibers as claimed in claim 1, wherein the coagulating bath is an aqueous solution prepared from sulfuric acid, sodium sulfate and zinc sulfate, wherein the sulfuric acid content is 110 to 130g/L, the sodium sulfate content is 330 to 350g/L, and the zinc sulfate content is 11 to 12g/L.
7. The method for improving the blackness of dope dyed viscose fibers according to claim 1, wherein the desulfurizing agent adopted in the desulfurizing step is 6 to 8g/L of NaOH solution; the reagent used in the acid washing step is sulfuric acid.
8. The method for improving the jetness of a dope dyed viscose fiber of claim 1, wherein the thickener is selected from the group consisting of acrylic thickeners and clay thickeners.
9. The method for improving the blackness of dope-dyed viscose fibers according to any one of claims 1 to 8, wherein a modifier is added to the spinning oil used in the oiling step, and the concentration of the spinning oil is 8 to 9g/L.
10. The method for improving the blackness of dope-dyed viscose fibers according to claim 9, wherein the modifier comprises a deepening agent, the deepening agent is a silicone resin or a polymer based on ammonium acrylate, and the concentration of the deepening agent is 1 to 2g/L.
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