CN112323477A - Preparation process of washable wool - Google Patents
Preparation process of washable wool Download PDFInfo
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- CN112323477A CN112323477A CN202011396801.6A CN202011396801A CN112323477A CN 112323477 A CN112323477 A CN 112323477A CN 202011396801 A CN202011396801 A CN 202011396801A CN 112323477 A CN112323477 A CN 112323477A
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- wool
- cleaning tank
- amount
- drying
- treatment
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- 210000002268 wool Anatomy 0.000 title claims abstract description 177
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000001035 drying Methods 0.000 claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000011049 filling Methods 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 67
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 57
- 239000000243 solution Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 24
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 19
- 208000028659 discharge Diseases 0.000 claims description 16
- 239000003599 detergent Substances 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 10
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 230000002378 acidificating effect Effects 0.000 claims description 9
- 239000004530 micro-emulsion Substances 0.000 claims description 9
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 7
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 7
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 7
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 7
- 238000009941 weaving Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 125000000524 functional group Chemical group 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 235000010265 sodium sulphite Nutrition 0.000 claims description 5
- 238000004043 dyeing Methods 0.000 claims description 2
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 8
- 238000009950 felting Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000002161 passivation Methods 0.000 abstract 1
- 239000004902 Softening Agent Substances 0.000 description 4
- 125000002091 cationic group Chemical group 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 108090000765 processed proteins & peptides Proteins 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009940 knitting Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 238000005517 mercerization Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000037330 wrinkle prevention Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
- D06L1/16—Multi-step processes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/10—Animal fibres
- D06M2101/12—Keratin fibres or silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/20—Treatment influencing the crease behaviour, the wrinkle resistance, the crease recovery or the ironing ease
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a preparation process of washable wool, which particularly relates to the technical field of wool treatment and specifically comprises the following steps: raw material screening (impurity removal, continuous water washing, drying and wool selection) → shrink prevention treatment (scale passivation and resin filling) → softening treatment → drying. The invention passivates the scales on the surface of the wool by adopting the combination of oxidation and discharge, greatly reduces the directional friction effect between the wool, prevents the mutual movement between the fibers, increases the affinity of the fibers to resin, enables the resin to uniformly cover the surface of the fibers, further weakens the directional friction effect of the wool, and can more obviously reduce the felting tendency of the fabric.
Description
Technical Field
The invention relates to the technical field of wool treatment, in particular to a preparation process of washable wool.
Background
As a natural protein fiber, wool has many excellent properties that other fibers cannot compare to, such as: good elasticity, soft luster, strong hygroscopicity, difficult staining, good heat retention and the like, thus being favored by consumers all the time. However, due to the particularity of the surface structure, the wool fibers have a felting tendency, the style and the dimensional stability of the wool fabric are greatly influenced, the wool fabric clothes are limited to a certain extent from being washed by water, and the burden of the consumers on taking the clothes is increased. With the development of science and technology and the annual improvement of the living and consumption level of people, the demand of consumers on high-grade wool fabrics is increased rapidly, and higher requirements on the quality and service performance of the fabrics, such as shrink prevention, wrinkle prevention, water and dirt resistance, machine washing and the like, are provided, wherein the mercerization shrink prevention technology of wool attracts attention particularly.
At present, the wool is usually subjected to shrink-proof treatment by chlorination/resin treatment, but after a plurality of times of water washing, the felting rate of the wool fabric is still serious, and the chlorine or halide emission generated in the production process pollutes the environment.
The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a process for preparing washable wool, which solves the following technical problems: how to reduce the shrinkage rate of the wool felt to realize environment-friendly production.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation process of washable wool specifically comprises the following steps:
the method comprises the following steps: screening raw materials:
(1) removing impurities: unpacking and decomposing a raw material bag purchased from a supplier into blocks by workers, and sorting the modified wool by a specially-assigned person to remove impurities in the wool;
(2) and (3) continuous water washing: sequentially putting the sorted wool into a first cleaning tank with the water temperature of 50 ℃, a second cleaning tank with the water temperature of 65-70 ℃, a third cleaning tank with the water temperature of 55-60 ℃, a fourth cleaning tank with the water temperature of 15-20 ℃ and a fifth cleaning tank with the water temperature of 40 ℃ for cleaning, and adding a proper amount of wool detergent and caustic soda into the second cleaning tank and the third cleaning tank;
(3) drying: drying the wool cleaned in the fifth cleaning tank in an oven at 60-80 ℃;
(4) wool selection: selecting wool with the diameter of 18.1-20 μm from the dried wool as the raw material for the next process;
step two: shrink-proof treatment:
(1) passivating scales:
A. oxidation treatment: soaking the cleaned wool screened in the step one in 2-4 wt% (relative to the weight of the solution) of sodium persulfate aqueous solution for oxidation treatment for 20-30 min;
B. and (3) discharge treatment: placing the cleaned wool after oxidation treatment in a corona discharge or plasma discharge environment, and utilizing a large amount of active ions in the environment to generate an etching effect on the surface of the wool and introduce oxygen-containing and nitrogen-containing polar functional groups;
(2) resin filling: soaking the passivated wool in a sodium sulfite solution with the mass concentration of 1.5% for 10min under the alkalescent condition that the pH value is 7.2-7.5, and then placing the wool in an epoxy resin solution or a polyurethane solution for padding for 40-50 min;
step three: softening treatment: under the acidic condition that the pH value is 4.5-6, the modified wool after crease-resist treatment is impregnated by amino organic silicon microemulsion, so that the elasticity and smoothness of the modified wool are improved, the softness of the modified wool is increased, and the hand feeling of the modified wool is improved. The micro-emulsion type softener has low turbidity and low viscosity, is very stable under an acidic condition, can be rapidly diffused, spread and formed into a film on the surface of a sheep at normal temperature, has a structure similar to a peptide chain of wool and a group carried by wuxianzhike, and is easy to automatically adsorb and form hydrogen bond combination; the cationic group has attractive force between charges on wool with negative surface, and then salt bonds are formed to enhance the binding property of the softening agent and the wool; the silicon chain has special softness and elasticity in the molecule, so that the inherent softness and elasticity of the wool is recovered, and the inherent softness and elasticity of the wool is recovered;
step four: drying: and (3) drying the wool softened in the third step in a drying oven at the temperature of 45-60 ℃ to obtain the target wool.
Preferably, in the step (2) above, the wool detergent is added in the second and third washing tanks in an amount of 30% and 20% of the water amount, respectively, and the caustic soda is added in an amount of 2% and 1% of the water amount, respectively, and 10% of the total amount of the wool detergent and a proper amount of caustic soda are added to the second and third washing tanks every 2 hours after the wool is added.
Preferably, in the step (2) above, the wool detergent is an aqueous solution of nonylphenol polyoxyethylene ether in a nonionic surfactant, and the concentration of nonylphenol polyoxyethylene ether is 20% of the total amount of the aqueous solution, and the concentration of caustic soda is 0.005% by mass.
Preferably, in the step (2), during the subsequent supplement of caustic soda, the pH values of the solutions in the second cleaning tank and the third cleaning tank are respectively controlled to be between 8 and 9.
Preferably, in step (1) of the second step, the content of sodium persulfate in the solution A is 2-4 wt% (relative to the weight of the solution).
Preferably, in step (2) above, the content of epoxy resin or polyurethane is 15wt% to 40wt% (relative to the weight of the solution).
The invention also provides application of the washable wool, which is characterized in that plain circular knitting is used for white knitting or yarn-dyed weaving of target wool to obtain wool fabric, wherein the yarn-dyed weaving can be subjected to medium-temperature washing, sizing and decating to obtain better luster, and the wool fabric can be dyed by grey cloth, is quick and has better fastness.
The invention has the technical effects and advantages that:
before resin filling, scale on the surface of wool is passivated by adopting an oxidation and discharge combined mode, so that the directional friction effect among the wool is greatly reduced, the mutual movement among the fibers is prevented, the affinity of the resin to the resin is increased, the resin is uniformly covered on the surface of the fibers, and the directional friction effect of the wool is further weakened, so that the felting tendency of the fabric can be more obviously reduced, and the fabric prepared by the wool is not yellowed after being washed for many times, is firmly dyed, has stable size and can not generate wool, and can be recovered to a smooth surface after being ironed.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of example embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, steps, and so forth. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
Example 1
The invention provides a preparation process of washable wool, which specifically comprises the following steps:
the method comprises the following steps: screening raw materials:
(1) removing impurities: unpacking and decomposing a raw material bag purchased from a supplier into blocks by workers, and sorting the modified wool by a specially-assigned person to remove impurities in the wool;
(2) and (3) continuous water washing: the sorted wool is put into a first cleaning tank with the water temperature of 50 ℃, a second cleaning tank with the water temperature of 65-70 ℃, a third cleaning tank with the water temperature of 55-60 ℃, a fourth cleaning tank with the water temperature of 15-20 ℃ and a fifth cleaning tank with the water temperature of 40 ℃ in sequence for cleaning, the addition amounts of the wool detergent in the second cleaning tank and the third cleaning tank are respectively 30 percent and 20 percent of the water amount, the addition amounts of the caustic soda are respectively 2 percent and 1 percent of the water amount, and adding a wool detergent (nonylphenol polyoxyethylene ether) with the concentration of 20% of the total amount of the aqueous solution and the appropriate amount of caustic soda with the mass concentration of 0.005% into the second cleaning tank and the third cleaning tank every 2h after wool is added, in the subsequent caustic soda replenishing process, the pH values of the solutions of the second cleaning tank and the third cleaning tank are respectively controlled to be between 8 and 9;
(3) drying: drying the wool cleaned in the fifth cleaning tank in an oven at 60-80 ℃;
(4) wool selection: selecting wool with the diameter of 18.1-20 μm from the dried wool as the raw material for the next process;
step two: shrink-proof treatment:
(1) passivating scales:
A. oxidation treatment: soaking the cleaned wool screened in the step one in 2wt% (relative to the weight of the solution) of sodium persulfate aqueous solution for oxidation treatment for 20-30 min;
B. and (3) discharge treatment: placing the cleaned wool after oxidation treatment in a corona discharge or plasma discharge environment, and utilizing a large amount of active ions in the environment to generate an etching effect on the surface of the wool and introduce oxygen-containing and nitrogen-containing polar functional groups;
(2) resin filling: soaking the passivated wool in a sodium sulfite solution with the mass concentration of 1.5% for 10min under the alkalescent condition that the pH value is 7.2-7.5, and then placing the wool in an epoxy resin solution or a polyurethane solution with the weight percent of 15wt% (relative to the weight of the solution) for padding for 40-50 min;
step three: softening treatment: under the acidic condition that the pH value is 4.5-6, the modified wool after crease-resist treatment is impregnated by amino organic silicon microemulsion, so that the elasticity and smoothness of the modified wool are improved, the softness of the modified wool is increased, the hand feeling of the modified wool is improved, the microemulsion softener is low in turbidity and viscosity, is very stable under the acidic condition, can be rapidly diffused, spread and formed into a film on the surface of the wool at normal temperature, does not need groups carried by baking and has a similar structure with a wool peptide chain, and is easy to automatically adsorb and form hydrogen bond combination; the cationic group has attractive force between charges on wool with negative surface, and then salt bonds are formed to enhance the binding property of the softening agent and the wool; the silicon chain has special softness and elasticity in the molecule, so that the special softness and elasticity of the natural wool molecules are recovered, and the elasticity and flexibility of the natural wool are recovered;
step four: drying: and (3) drying the wool softened in the third step in a drying oven at the temperature of 45-60 ℃ to obtain the target wool.
Example 2
The invention provides a preparation process of washable wool, which specifically comprises the following steps:
the method comprises the following steps: screening raw materials:
(1) removing impurities: unpacking and decomposing a raw material bag purchased from a supplier into blocks by workers, and sorting the modified wool by a specially-assigned person to remove impurities in the wool;
(2) and (3) continuous water washing: the sorted wool is put into a first cleaning tank with the water temperature of 50 ℃, a second cleaning tank with the water temperature of 65-70 ℃, a third cleaning tank with the water temperature of 55-60 ℃, a fourth cleaning tank with the water temperature of 15-20 ℃ and a fifth cleaning tank with the water temperature of 40 ℃ in sequence for cleaning, the addition amounts of the wool detergent in the second cleaning tank and the third cleaning tank are respectively 30 percent and 20 percent of the water amount, the addition amounts of the caustic soda are respectively 2 percent and 1 percent of the water amount, and adding a wool detergent (nonylphenol polyoxyethylene ether) with the concentration of 20% of the total amount of the aqueous solution and the appropriate amount of caustic soda with the mass concentration of 0.005% into the second cleaning tank and the third cleaning tank every 2h after wool is added, in the subsequent caustic soda replenishing process, the pH values of the solutions of the second cleaning tank and the third cleaning tank are respectively controlled to be between 8 and 9;
(3) drying: drying the wool cleaned in the fifth cleaning tank in an oven at 60-80 ℃;
(4) wool selection: selecting wool with the diameter of 18.1-20 μm from the dried wool as the raw material for the next process;
step two: shrink-proof treatment:
(1) passivating scales:
A. oxidation treatment: soaking the cleaned wool screened in the step one in 3wt% (relative to the weight of the solution) of sodium persulfate aqueous solution for oxidation treatment for 20-30 min;
B. and (3) discharge treatment: placing the cleaned wool after oxidation treatment in a corona discharge or plasma discharge environment, and utilizing a large amount of active ions in the environment to generate an etching effect on the surface of the wool and introduce oxygen-containing and nitrogen-containing polar functional groups;
(2) resin filling: soaking the passivated wool in a sodium sulfite solution with the mass concentration of 1.5% for 10min under the alkalescent condition that the pH value is 7.2-7.5, and then placing the wool in an epoxy resin solution or a polyurethane solution with the weight percent of 25wt% (relative to the weight of the solution) for padding for 40-50 min;
step three: softening treatment: under the acidic condition that the pH value is 4.5-6, the modified wool after crease-resist treatment is impregnated by amino organic silicon microemulsion, so that the elasticity and smoothness of the modified wool are improved, the softness of the modified wool is increased, the hand feeling of the modified wool is improved, the microemulsion softener is low in turbidity and viscosity, is very stable under the acidic condition, can be rapidly diffused, spread and formed into a film on the surface of the wool at normal temperature, does not need groups carried by baking and has a similar structure with a wool peptide chain, and is easy to automatically adsorb and form hydrogen bond combination; the cationic group has attractive force between charges on wool with negative surface, and then salt bonds are formed to enhance the binding property of the softening agent and the wool; the silicon chain has special softness and elasticity in the molecule, so that the special softness and elasticity of the natural wool molecules are recovered, and the elasticity and flexibility of the natural wool are recovered;
step four: drying: and (3) drying the wool softened in the third step in a drying oven at the temperature of 45-60 ℃ to obtain the target wool.
Example 3
The invention provides a preparation process of washable wool, which specifically comprises the following steps:
the method comprises the following steps: screening raw materials:
(1) removing impurities: unpacking and decomposing a raw material bag purchased from a supplier into blocks by workers, and sorting the modified wool by a specially-assigned person to remove impurities in the wool;
(2) and (3) continuous water washing: the sorted wool is put into a first cleaning tank with the water temperature of 50 ℃, a second cleaning tank with the water temperature of 65-70 ℃, a third cleaning tank with the water temperature of 55-60 ℃, a fourth cleaning tank with the water temperature of 15-20 ℃ and a fifth cleaning tank with the water temperature of 40 ℃ in sequence for cleaning, the addition amounts of the wool detergent in the second cleaning tank and the third cleaning tank are respectively 30 percent and 20 percent of the water amount, the addition amounts of the caustic soda are respectively 2 percent and 1 percent of the water amount, and adding a wool detergent (nonylphenol polyoxyethylene ether) with the concentration of 20% of the total amount of the aqueous solution and the appropriate amount of caustic soda with the mass concentration of 0.005% into the second cleaning tank and the third cleaning tank every 2h after wool is added, in the subsequent caustic soda replenishing process, the pH values of the solutions of the second cleaning tank and the third cleaning tank are respectively controlled to be between 8 and 9;
(3) drying: drying the wool cleaned in the fifth cleaning tank in an oven at 60-80 ℃;
(4) wool selection: selecting wool with the diameter of 18.1-20 μm from the dried wool as the raw material for the next process;
step two: shrink-proof treatment:
(1) passivating scales:
A. oxidation treatment: soaking the cleaned wool screened in the step one in 4wt% (relative to the weight of the solution) of sodium persulfate aqueous solution for oxidation treatment for 20-30 min;
B. and (3) discharge treatment: placing the cleaned wool after oxidation treatment in a corona discharge or plasma discharge environment, and utilizing a large amount of active ions in the environment to generate an etching effect on the surface of the wool and introduce oxygen-containing and nitrogen-containing polar functional groups;
(2) resin filling: soaking the passivated wool in a sodium sulfite solution with the mass concentration of 1.5% for 10min under the alkalescent condition that the pH value is 7.2-7.5, and then placing the wool in an epoxy resin solution or a polyurethane solution with the weight percent (relative to the weight of the solution) for padding for 40-50 min;
step three: softening treatment: under the acidic condition that the pH value is 4.5-6, the modified wool after crease-resist treatment is impregnated by amino organic silicon microemulsion, so that the elasticity and smoothness of the modified wool are improved, the softness of the modified wool is increased, the hand feeling of the modified wool is improved, the microemulsion softener is low in turbidity and viscosity, is very stable under the acidic condition, can be rapidly diffused, spread and formed into a film on the surface of the wool at normal temperature, does not need groups carried by baking and has a similar structure with a wool peptide chain, and is easy to automatically adsorb and form hydrogen bond combination; the cationic group has attractive force between charges on wool with negative surface, and then salt bonds are formed to enhance the binding property of the softening agent and the wool; the silicon chain has special softness and elasticity in the molecule, so that the special softness and elasticity of the natural wool molecules are recovered, and the elasticity and flexibility of the natural wool are recovered;
step four: drying: and (3) drying the wool softened in the third step in a drying oven at the temperature of 45-60 ℃ to obtain the target wool.
Comparative examples 1 to 3, the characteristics of fabrics prepared with wool produced therefrom were determined and compared with the corresponding characteristics of prior art wool fabrics, see in particular the following table:
according to the comparison of data in the table, the following results are obtained: the fabric prepared from the wool produced by the method has the advantages that after 50 times of repeated water washing, the machine washing felt shrinkage is greatly reduced compared with that of the existing wool fabric, the fabric is not yellow after water washing, the dyeing is firm, the size is stable, the wool does not appear after water washing, and the finished garment can recover to a smooth surface after ironing.
Finally, it should be noted that: although the present invention has been described in detail with reference to the general description and the specific embodiments, on the basis of the present invention, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A preparation process of washable wool is characterized by comprising the following steps: the method specifically comprises the following steps:
the method comprises the following steps: screening raw materials:
removing impurities: unpacking and decomposing a raw material bag purchased from a supplier into blocks by workers, and sorting the modified wool by a specially-assigned person to remove impurities in the wool;
and (3) continuous water washing: sequentially putting the sorted wool into a first cleaning tank with the water temperature of 50 ℃, a second cleaning tank with the water temperature of 65-70 ℃, a third cleaning tank with the water temperature of 55-60 ℃, a fourth cleaning tank with the water temperature of 15-20 ℃ and a fifth cleaning tank with the water temperature of 40 ℃ for cleaning, and adding a proper amount of wool detergent and caustic soda into the second cleaning tank and the third cleaning tank;
drying: drying the wool cleaned in the fifth cleaning tank in an oven at 60-80 ℃;
wool selection: selecting wool with the diameter of 18.1-20 μm from the dried wool as the raw material for the next process;
step two: shrink-proof treatment:
passivating scales:
A. oxidation treatment: soaking the cleaned wool screened in the step one in a sodium persulfate aqueous solution for oxidation treatment for 20-30 min;
B. and (3) discharge treatment: placing the cleaned wool after oxidation treatment in a corona discharge or plasma discharge environment, and utilizing a large amount of active ions in the environment to generate an etching effect on the surface of the wool and introduce oxygen-containing and nitrogen-containing polar functional groups;
resin filling: soaking the passivated wool in a sodium sulfite solution with the mass concentration of 1.5% for 10min under the alkalescent condition that the pH value is 7.2-7.5, and then placing the wool in an epoxy resin solution or a polyurethane solution for padding for 40-50 min;
step three: softening treatment: under the acidic condition that the pH value is 4.5-6, the modified wool after crease-resist treatment is dipped by amino organic silicon microemulsion;
step four: drying: and (3) drying the wool softened in the third step in a drying oven at the temperature of 45-60 ℃ to obtain the target wool.
2. A process according to claim 1 for the preparation of washable wool, characterized in that: in the first step (2), the wool detergent in the second cleaning tank and the wool detergent in the third cleaning tank are respectively added in an amount of 30% and 20% of the water amount, the caustic soda is respectively added in an amount of 2% and 1% of the water amount, and the wool detergent and the appropriate amount of caustic soda are respectively added in the second cleaning tank and the third cleaning tank in an amount of 10% of the total amount of the liquid in the second cleaning tank and the third cleaning tank every 2 hours after wool is added.
3. A process according to claim 2 for the preparation of washable wool wherein: in the step (2) above, the wool detergent is an aqueous solution of nonylphenol polyoxyethylene ether in a nonionic surfactant, and the concentration of nonylphenol polyoxyethylene ether is 20% of the total amount of the aqueous solution, and the mass concentration of caustic soda is 0.005%.
4. A process according to claim 2 for the preparation of washable wool wherein: in the step (2), in the process of adding caustic soda subsequently, the pH values of the solutions in the second cleaning tank and the third cleaning tank are controlled to be between 8 and 9 respectively.
5. A process according to claim 1 for the preparation of washable wool, characterized in that: in the step (1) of the second step, the content of the sodium persulfate in the solution A is 2 to 4 weight percent (relative to the weight of the solution).
6. A process according to claim 1 for the preparation of washable wool, characterized in that: in the second step (2), the content of the epoxy resin or the polyurethane is 15wt% -40wt% (relative to the weight of the solution).
7. Use of washable wool according to any one of claims 1 to 6, characterized in that: the method is characterized in that plain circular weaving is used for white weaving or yarn weaving of target wool to obtain wool fabric, wherein the yarn weaving can be carried out through medium-temperature washing, sizing and decating, and gray fabric dyeing can also be carried out.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114635209A (en) * | 2022-03-21 | 2022-06-17 | 浙江纺织服装职业技术学院 | Spun yarn compounded by fine wool fiber and polylactic acid fiber and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635209A (en) * | 2022-03-21 | 2022-06-17 | 浙江纺织服装职业技术学院 | Spun yarn compounded by fine wool fiber and polylactic acid fiber and preparation method thereof |
| CN114635209B (en) * | 2022-03-21 | 2023-03-14 | 浙江纺织服装职业技术学院 | Spun yarn compounded by fine wool fiber and polylactic acid fiber and preparation method thereof |
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