CN113737530A - Waterborne polyurethane bundling braided wire and preparation method thereof - Google Patents
Waterborne polyurethane bundling braided wire and preparation method thereof Download PDFInfo
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- CN113737530A CN113737530A CN202110966695.9A CN202110966695A CN113737530A CN 113737530 A CN113737530 A CN 113737530A CN 202110966695 A CN202110966695 A CN 202110966695A CN 113737530 A CN113737530 A CN 113737530A
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 55
- 239000004814 polyurethane Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 31
- 238000005187 foaming Methods 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 22
- 230000015271 coagulation Effects 0.000 claims abstract description 3
- 238000005345 coagulation Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 16
- 239000003431 cross linking reagent Substances 0.000 claims description 16
- 239000004088 foaming agent Substances 0.000 claims description 15
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 239000002562 thickening agent Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 229920005749 polyurethane resin Polymers 0.000 claims description 11
- 230000001112 coagulating effect Effects 0.000 claims description 10
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 8
- 229960000583 acetic acid Drugs 0.000 claims description 8
- 239000012362 glacial acetic acid Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 235000002906 tartaric acid Nutrition 0.000 claims description 8
- 239000011975 tartaric acid Substances 0.000 claims description 8
- 239000011268 mixed slurry Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- 229920000881 Modified starch Polymers 0.000 claims description 6
- 125000000129 anionic group Chemical group 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 150000001718 carbodiimides Chemical class 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 12
- 238000005470 impregnation Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002904 solvent Substances 0.000 abstract description 7
- 230000004224 protection Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000012752 auxiliary agent Substances 0.000 abstract description 2
- 239000003960 organic solvent Substances 0.000 abstract description 2
- 102000004169 proteins and genes Human genes 0.000 abstract 1
- 108090000623 proteins and genes Proteins 0.000 abstract 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 15
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000009466 transformation 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
- 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
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- 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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
-
- 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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
-
- 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
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
-
- 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
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/11—Starch or derivatives thereof
-
- 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
- D06M2200/50—Modified hand or grip properties; Softening compositions
Abstract
The invention provides a waterborne polyurethane bundling braided wire and a preparation method thereof, wherein the preparation method comprises the following steps: 1) preparing aqueous polyurethane foaming slurry; 2) impregnation; 3) coagulation; 4) the preparation method of the bundling braided wire provided by the invention adopts the waterborne polyurethane slurry and the waterborne environmental protection auxiliary agent, the prepared slurry is safe and environment-friendly, no organic solvent is used, and the problems of environmental pollution and solvent residue damage to human bodies during the production of solvent-based slurry are solved. The cluster braided wire obtained by the invention has a fine and compact structure, and has excellent air permeability and moisture permeability while endowing flexibility by adding protein powder into the aqueous polyurethane slurry, so that the cluster braided wire has strong skin feel.
Description
Technical Field
The invention belongs to the technical field of waterborne polyurethane, and particularly relates to a waterborne polyurethane bundling braided wire and a preparation method thereof.
Background
The current weaving process is applied to various fields in people's life and has various varieties. Most manufacturers adopt solvent type polyurethane for manufacturing, and the basic components of the slurry are toluene, butanone, Dimethylformamide (DMF) and polyurethane resin, but the raw materials of the components have great pollution to the environment. The wet production process is to replace dimethyl formamide (DMF) in solvent type polyurethane with water to make the coating have continuous pores, so as to achieve moisture permeability and air permeability. However, the impregnation slurry contains a large amount of DMF, solvent additives and color paste, and the residual solvent is harmful to the health of consumers and seriously damages the ecological environment.
With the enhancement of environmental protection consciousness of people, the sustainable development of the production industry is realized, the trend of environmental protection and health and environmental protection of a production chain is followed, the emission of pollutants is reduced, the batching process is improved, the pollution is avoided from the source and in the production process, the green and clean production of the industrial chain is realized, and the transformation and the upgrade of the industry are brought.
Disclosure of Invention
The invention aims to overcome the defects that the traditional manufacturing process in the prior art cannot realize softness, moisture permeability and air permeability, strong skin feel performance and environmental pollution, and provides a preparation method of an aqueous polyurethane bundling braided wire and the aqueous polyurethane bundling braided wire prepared by the preparation method.
In order to solve the technical problem, the technical scheme is that the preparation method of the waterborne polyurethane bundling braided wire comprises the following steps:
s1, weighing 300 parts by weight of 250-polyurethane wet-process resin, 1-1.5 parts by weight of cross-linking agent, 1-1.5 parts by weight of powder dispersing agent, 10-15 parts by weight of pregelatinized starch, 10-15 parts by weight of lignocellulose powder, 10-15 parts by weight of foaming agent and 0.5-2 parts by weight of aqueous thickening agent, mixing to obtain mixed slurry, adding 0.6 volume times of air into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, impregnating the bundled impregnated wire in the waterborne polyurethane foaming slurry obtained in the step S1 to saturate, and then molding through a mold to obtain a bundled braided wire;
s3, carrying out primary coagulation and shaping on the bunched braided wire by using a coagulating liquid, wherein the coagulating liquid consists of 5-15 parts by weight of demulsifying and crosslinking agent and 80-95 parts by weight of water;
s4, drying and shaping the primarily shaped bundling braided wire in an oven at the temperature of 120-140 ℃.
The preparation method of the water-based polyurethane bundling braided wire is further improved as follows:
preferably, the wet-process polyurethane resin in the step S1 is an anionic aqueous polyurethane resin with a solid content of 35-45 wt%.
Preferably, the crosslinking agent in step S1 is a nitryl-type crosslinking agent or a carbodiimide-type crosslinking agent.
Preferably, the powder dispersant in step S1 is an ammonium salt powder dispersant or a sodium salt powder dispersant.
Preferably, the pregelatinized starch in step S1 is α -starch, and the particle size of the lignocellulose powder is 400-1000 mesh.
Preferably, the foaming agent in step S1 is one or a combination of two or more of an organosilicon modified foaming agent, a sodium dodecyl sulfate composite foaming agent, and a stearate foaming agent.
Preferably, the aqueous thickener in step S1 is an associative polyurethane thickener or an alkali-swellable acrylic thickener.
Preferably, the demulsifying and crosslinking agent in step S3 is one or a combination of two or more of glacial acetic acid, tartaric acid, calcium chloride and aluminum chloride.
Preferably, the 100% modulus of the aqueous polyurethane foaming slurry prepared in the step S1 is 1-2MPa, the breaking strength is more than or equal to 10MPa, and the elongation is more than or equal to 300% under the test conditions that the temperature is 20-25 ℃ and the humidity is 30-50%.
In order to solve the technical problem of the invention, another technical scheme is that the waterborne polyurethane bundling braided wire prepared by any one of the preparation methods is adopted.
Compared with the prior art, the invention has the beneficial effects that:
the braided wire is mainly used as some ornaments, such as wristbands, head bands or decorative vases; the water-based polyurethane slurry and the water-based environment-friendly auxiliary agent are adopted, so that the prepared slurry is safe and environment-friendly, and has no organic solvent, and the problems of environmental pollution and solvent residue damage to human bodies during the production of solvent-based slurry are solved. The cluster braided wire obtained by the invention has a fine and compact structure, and the pre-gelatinized starch is added into the aqueous polyurethane slurry, so that the cluster braided wire is endowed with excellent air permeability and moisture permeability, and is soft in hand feeling and strong in skin feeling.
The lignocellulose powder added in the components is wrapped by waterborne polyurethane, and then mechanically foamed and injected into the air, so that the bundling braided wire has high flexibility and air permeability; the added pregelatinized starch can ensure that the skin feel of the bunched braided wire is strong; the cluster impregnation line is solidified into a solid state from a liquid state after being impregnated and saturated in the waterborne polyurethane foaming slurry, and the foam holes in the foaming slurry cannot be broken by external reasons in the solidification process by the solidification method, so that the air permeability of the product can be fully embodied; the waterborne polyurethane resin film dried at the temperature of 120 ℃ and 140 ℃ has better weather resistance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments of the present invention belong to the protection scope of the present invention.
The wet polyurethane resin used in the following examples is an anionic aqueous polyurethane resin with a trade name of KT635F, produced by Nature Water science and technology Limited liability company of Hefei Ke; the powder dispersant is a powder dispersant with the brand number of A168 produced by the field chemical company Limited; the foaming agent is an organic silicon modified K12 foaming agent produced by Suzhou Senfan science and technology limited; the cross-linking agent is a N-N and N-N and the water thickening agent produced by Tesman of Tesman and the Heman (China) and the aqueous thickening agent of Hean alkali petroleum chemical plant.
Example 1
A method for bundling and weaving waterborne polyurethane yarns comprises the following steps:
s1, preparing the aqueous polyurethane foaming slurry according to the following components in parts by mass: 300 parts of KT635F anionic waterborne polyurethane resin with the solid content of 35 wt%, 1.5 parts of A168 powder dispersant, 10 parts of 400-mesh lignocellulose powder, 10 parts of alpha-starch, 10 parts of organic silicon modified K12 foaming agent, 1.5 parts of cross-linking agent and 0.5 part of water-based thickener; adding 0.6 volume times of air into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, fully soaking the bundled impregnation line in the prepared waterborne polyurethane foaming slurry; the physical properties of the coating are as follows: under the test conditions of 20 ℃ of temperature and 30% of humidity, the 100% modulus is 2MPa, the breaking strength is more than or equal to 10MPa, and the elongation is more than or equal to 300%; molding through a mold after the impregnation is thorough;
s3, preparing a solidification solution: weighing 5 parts of a mixture of tartaric acid and glacial acetic acid, wherein the mixing ratio of the tartaric acid to the glacial acetic acid is 1:2, and 80 parts of tap water;
s4, agglomeration: condensing the bundled impregnated wire impregnated with the foaming slurry by using a coagulating liquid in a coagulating tank to obtain a preliminarily shaped bundled braided wire;
s5, drying: and (3) drying the primarily-shaped bundled braided wire by using an oven at the temperature of 120-140 ℃, drying and shaping again to obtain the waterborne polyurethane bundled braided wire.
Example 2
A method for bundling and weaving waterborne polyurethane yarns comprises the following steps:
s1, preparing the aqueous polyurethane foaming slurry according to the following components in parts by mass: 300 parts of KT635F anionic waterborne polyurethane resin with the solid content of 40 wt%, 1.5 parts of A168 powder dispersant, 10 parts of 400-mesh lignocellulose powder, 10 parts of alpha-starch, 10 parts of organic silicon modified K12 foaming agent, 1.5 parts of cross-linking agent and 0.5 part of water-based thickener; adding 0.6 volume times of air into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, fully soaking the bundled impregnation line in the prepared waterborne polyurethane foaming slurry; the physical properties of the coating are as follows: under the test conditions of 20 ℃ of temperature and 30% of humidity, the 100% modulus is 2MPa, the breaking strength is more than or equal to 10MPa, and the elongation is more than or equal to 300%; molding through a mold after the impregnation is thorough;
s3, preparing a solidification solution: weighing 5 parts of a mixture of tartaric acid and glacial acetic acid, wherein the mixing ratio of the tartaric acid to the glacial acetic acid is 1:3, and 80 parts of tap water;
s4, condensing the bundled impregnated wire impregnated with the foaming slurry through a coagulating liquid in a coagulating tank to obtain a preliminarily shaped bundled braided wire;
s5, drying: and (3) drying the primarily-shaped bundled braided wire by using an oven at the temperature of 120-140 ℃, drying and shaping again to obtain the waterborne polyurethane bundled braided wire.
Example 3
A method for bundling and weaving waterborne polyurethane yarns comprises the following steps:
s1, preparing the aqueous polyurethane foaming slurry according to the following components in parts by mass: 300 parts of KT635F anionic waterborne polyurethane resin with the solid content of 40 wt%, 1.5 parts of A168 powder dispersant, 15 parts of 400-mesh lignocellulose powder, 15 parts of alpha-starch, 10 parts of organic silicon modified K12 foaming agent, 1.5 parts of cross-linking agent and 0.5 part of aqueous thickening agent; adding 0.6 volume times of air into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, fully soaking the bundled impregnation line in the prepared waterborne polyurethane foaming slurry; the physical properties of the coating are as follows: under the test conditions of 20 ℃ of temperature and 30% of humidity, the 100% modulus is 2MPa, the breaking strength is more than or equal to 10MPa, and the elongation is more than or equal to 300%; molding through a mold after the impregnation is thorough;
s3, preparing a solidification solution: weighing 5 parts of a mixture of tartaric acid and glacial acetic acid, wherein the mixing ratio of the tartaric acid to the glacial acetic acid is 1.5:2 and 80 parts of tap water;
s4, agglomeration: condensing the bundled impregnated wire impregnated with the foaming slurry by using a coagulating liquid in a coagulating tank to obtain a preliminarily shaped bundled braided wire;
s5, drying: and (3) drying the primarily-shaped bundled braided wire by using an oven at the temperature of 120-140 ℃, drying and shaping again to obtain the waterborne polyurethane bundled braided wire.
The water-based polyurethane bundling braided wire prepared in the embodiment 1-3 has excellent air permeability and moisture permeability, soft hand feeling and strong skin feeling after being tested.
It should be understood by those skilled in the art that the foregoing is only illustrative of several embodiments of the invention, and not of all embodiments. It should be noted that many variations and modifications are possible to those skilled in the art, and all variations and modifications that do not depart from the gist of the invention are intended to be within the scope of the invention as defined in the appended claims.
Claims (10)
1. A preparation method of a water-based polyurethane bundling braided wire is characterized by comprising the following steps:
s1, weighing 300 parts by weight of 250-polyurethane wet-process resin, 1-1.5 parts by weight of cross-linking agent, 1-1.5 parts by weight of powder dispersing agent, 10-15 parts by weight of pregelatinized starch, 10-15 parts by weight of lignocellulose powder, 10-15 parts by weight of foaming agent and 0.5-2 parts by weight of aqueous thickening agent, mixing to obtain mixed slurry, adding 0.6 volume times of air into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, impregnating the bundled impregnated wire in the waterborne polyurethane foaming slurry obtained in the step S1 to saturate, and then molding through a mold to obtain a bundled braided wire;
s3, carrying out primary coagulation and shaping on the bunched braided wire by using a coagulating liquid, wherein the coagulating liquid consists of 5-15 parts by weight of demulsifying and crosslinking agent and 80-95 parts by weight of water;
s4, drying and shaping the primarily shaped bundling braided wire in an oven at the temperature of 120-140 ℃.
2. The method for preparing the aqueous polyurethane bundling braided wire according to claim 1, wherein the wet polyurethane resin in step S1 is an anionic aqueous polyurethane resin with a solid content of 35-45 wt%.
3. The method for preparing a polyurethane braided bundle wire as claimed in claim 1, wherein the cross-linking agent in step S1 is a nitryl-type cross-linking agent or a carbodiimide cross-linking agent.
4. The method for preparing the waterborne polyurethane bundling braided wire according to claim 1, wherein the powder dispersant in step S1 is an ammonium salt powder dispersant or a sodium salt powder dispersant.
5. The method for preparing the waterborne polyurethane bundling braided wire as claimed in claim 1, wherein the pregelatinized starch in step S1 is α -starch, and the particle size of the lignocellulose powder is 400-1000 mesh.
6. The method for preparing the waterborne polyurethane bundling braided wire according to claim 1, wherein the foaming agent in step S1 is one or a combination of two or more of an organic silicon modified foaming agent, a sodium dodecyl sulfate composite foaming agent or a stearate foaming agent.
7. The method for preparing the aqueous polyurethane bundling braided wire according to claim 1, wherein the aqueous thickener in step S1 is an associative polyurethane thickener or an alkali-swellable acrylic thickener.
8. The method for preparing the waterborne polyurethane bundling braided wire according to claim 1, wherein the demulsifying and crosslinking agent in step S3 is one or a combination of two or more of glacial acetic acid, tartaric acid, calcium chloride and aluminum chloride.
9. The method for preparing the waterborne polyurethane bundling braided wire according to claim 1, wherein the 100% modulus of the waterborne polyurethane foaming slurry prepared in step S1 is 1-2MPa, the breaking strength is not less than 10MPa, and the elongation is not less than 300% under the test conditions of 20-25 ℃ and 30-50% humidity.
10. An aqueous polyurethane bundling braided wire prepared by the preparation method of any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110966695.9A CN113737530A (en) | 2021-08-23 | 2021-08-23 | Waterborne polyurethane bundling braided wire and preparation method thereof |
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| CN202110966695.9A CN113737530A (en) | 2021-08-23 | 2021-08-23 | Waterborne polyurethane bundling braided wire and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Application publication date: 20211203 |