CN117364495A - Water-based polyurethane bundling braided wire and preparation method thereof - Google Patents

Water-based polyurethane bundling braided wire and preparation method thereof Download PDF

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Publication number
CN117364495A
CN117364495A CN202311646172.1A CN202311646172A CN117364495A CN 117364495 A CN117364495 A CN 117364495A CN 202311646172 A CN202311646172 A CN 202311646172A CN 117364495 A CN117364495 A CN 117364495A
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Prior art keywords
braided wire
parts
bundling
aqueous polyurethane
bunched
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CN202311646172.1A
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Chinese (zh)
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刘振振
庄君新
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Jiangsu Mill Chemical Technology Co ltd
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Jiangsu Mill Chemical Technology Co ltd
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Priority to CN202311646172.1A priority Critical patent/CN117364495A/en
Publication of CN117364495A publication Critical patent/CN117364495A/en
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    • 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
    • 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
    • D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
    • D06M11/11—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
    • D06M11/155—Halides of elements of Groups 2 or 12 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
    • 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
    • D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
    • D06M11/11—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
    • D06M11/17—Halides 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
    • 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
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/05—Cellulose 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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/04—Processes in which the treating agent is applied in the form of a foam
    • 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

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention relates to the field of preparation of waterborne polyurethane, and discloses 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) Impregnating; 3) Condensing; 4) In the preparation method of the bunched braided wire, the steps of drying and shaping are adopted, and the prepared sizing agent is safe and environment-friendly and does not contain any organic solvent, so that the pollution to the environment and the harm of solvent residues to human bodies caused by the solvent sizing agent in the production process are solved. The bunched braided wire obtained by the invention has a compact structure, and the protein powder is added into the aqueous polyurethane slurry, so that the bunched braided wire has excellent air permeability and moisture permeability and strong skin feel.

Description

Water-based polyurethane bundling braided wire and preparation method thereof
Technical Field
The invention relates to the field of preparation of waterborne polyurethane, in particular to a waterborne polyurethane bundling braided wire and a preparation method thereof.
Background
The current knitting technology is applied to various fields in people's life and has various varieties. Most manufacturers adopt solvent 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 Dimethylformamide (DMF) in solvent polyurethane with water to make the coating possess continuous pores, so as to reach the vapor permeability and air permeability. However, a large amount of DMF, solvent auxiliary agent and color paste are used in the impregnation slurry, so that not only is the solvent residue harmful to the health of consumers, but also the ecological environment is seriously damaged.
Along with the enhancement of environmental awareness, to realize the sustainable development of the production industry, the method must conform to the trend of environmental protection, health and environmental protection of the production chain, reduce the emission of pollutants, improve the batching process, stop pollution from the source and in the production process, realize green and clean production of the industrial chain, and bring about transformation and upgrading of the industry.
Disclosure of Invention
The invention aims to overcome the defects that the traditional manufacturing process in the prior art cannot realize the polyurethane bundling braided wire which is soft, moisture permeable, breathable and strong in skin feel performance and the preparation process pollute the environment, and provides a preparation method of the water-based polyurethane bundling braided wire and the water-based polyurethane bundling braided wire prepared by the preparation method.
In order to solve the technical problem of the invention, the invention provides a preparation method of a water-based polyurethane bundling braided wire, which comprises the following steps:
s1, weighing 250-300 parts by weight of wet polyurethane 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, pumping 0.6 times of air into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, impregnating the bunched impregnated wire into the aqueous polyurethane foaming slurry in the step S1 for saturation, and then shaping through a die to obtain a bunched braided wire;
s3, condensing and primarily shaping the bunched braided wire by using a coagulating liquid, wherein the coagulating liquid consists of 5-15 parts by weight of demulsification cross-linking agent and 80-95 parts by weight of water;
s4, drying and shaping the preliminarily shaped bundling braided wire in an oven at 120-140 ℃.
The preparation method of the water-based polyurethane bundling braided wire is further improved:
preferably, in step S1, the wet polyurethane resin is an anionic aqueous polyurethane resin having a solid content of 35 to 45 wt%.
Preferably, in step S1, the crosslinking agent is an aziridine-type crosslinking agent or a carbodiimide-type crosslinking agent.
Preferably, in step S1, the powder dispersing agent is an ammonium salt powder dispersing agent or a sodium salt powder dispersing agent.
Preferably, in step S1, the pregelatinized starch is alpha-starch and the particle size of the lignocellulose powder is 400-1000 meshes.
Preferably, in step S1, the foaming agent 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, in step S1, the aqueous thickener is an associative polyurethane thickener or an alkali-swellable acrylic thickener.
Preferably, in step S3, the demulsification crosslinking agent is one or a combination of two or more of glacial acetic acid, tartaric acid, citric acid, calcium chloride and aluminum chloride.
Preferably, in the step S1, the 100% modulus of the prepared aqueous polyurethane foaming slurry 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 condition that the temperature is 20-25 ℃ and the humidity is 30-50%.
Compared with the prior art, the invention has the beneficial effects that:
the braided wire of the invention is mainly used as a plurality of ornaments, such as wrist bands, head bands or ornamental flower vases; the aqueous polyurethane slurry and the aqueous environment-friendly auxiliary agent are adopted, and the prepared slurry is safe and environment-friendly, does not contain any organic solvent, and solves the problems of environmental pollution and harm of solvent residues to human bodies during the production of the solvent type slurry. The bunched braided wire obtained by the invention has a compact structure, and excellent air permeability and moisture permeability, and soft hand feeling and strong skin feel are further endowed by adding pregelatinized starch into the aqueous polyurethane slurry.
The lignocellulose powder added in the components is wrapped by water-based polyurethane, and then the lignocellulose powder is mechanically foamed and air is injected, so that the bunched braided wire has high flexibility and air permeability; the added pregelatinized starch can make the bunched braided wire have strong skin feel; the bunched impregnation line is impregnated and saturated in the aqueous polyurethane foaming slurry and then is solidified from a liquid state to a solid state, and foam holes in the foaming material 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 reflected; the aqueous polyurethane resin film dried at 120-140 ℃ has better weather resistance.
Description of the embodiments
The subject matter described herein will now be discussed with reference to example embodiments. It should be appreciated that these embodiments are discussed only to enable a person skilled in the art to better understand and thereby practice the subject matter described herein, and are not limiting of the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure as set forth in the specification. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.
The wet polyurethane resin used in the following examples was anionic aqueous polyurethane resin CT402; the powder dispersing agent is a powder dispersing agent with the mark A168 produced by field chemistry Co., ltd; the foaming agent is an organosilicon modified K12 foaming agent produced by Suzhou Senfan technology Co., ltd; the cross-linking agent is an aziridine-type cross-linking agent produced by Dissman (China) Limited company, and the water-based thickening agent is an alkali-swelling acrylic acid thickening agent produced by sea-ampere petrochemical factory.
Examples
A method for preparing a water-based polyurethane bundling braided wire, which comprises the following steps:
s1, preparing aqueous polyurethane foaming slurry according to the following components in parts by mass: 300 parts of CT402 anionic waterborne polyurethane resin with the solid content of 35wt%, 1.5 parts of A168 powder dispersing agent, 10 parts of 400-mesh lignocellulose powder, 10 parts of alpha-starch, 10 parts of organosilicon modified K12 foaming agent, 1.5 parts of cross-linking agent and 0.5 part of waterborne thickening agent; pumping air with the volume of 0.6 times into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, fully soaking the clustered impregnation lines into the prepared aqueous polyurethane foaming slurry; the physical properties of the coating film are as follows: under the test condition of 20 ℃ and 30% 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%; shaping by a mould after penetrating impregnation;
s3, preparing a coagulating liquid: weighing 5 parts of a mixture of tartaric acid and citric acid, wherein the mixing ratio of the tartaric acid to the citric acid is 1:2, and tap water is 80 parts;
s4, condensation: condensing the bunched impregnated wire impregnated with the foaming slurry through the coagulating liquid in the coagulating tank to obtain a preliminarily shaped bunched braided wire;
s5, drying: and (3) drying the preliminarily shaped bunched braided wire through an oven at 120-140 ℃, and drying and shaping again to obtain the water-based polyurethane bunched braided wire.
Examples
A method for preparing a water-based polyurethane bundling braided wire, which comprises the following steps:
s1, preparing aqueous polyurethane foaming slurry according to the following components in parts by mass: 300 parts of CT402 anionic waterborne polyurethane resin with the solid content of 40wt%, 1.5 parts of A168 powder dispersing agent, 10 parts of 400-mesh lignocellulose powder, 10 parts of alpha-starch, 10 parts of organosilicon modified K12 foaming agent, 1.5 parts of cross-linking agent and 0.5 part of waterborne thickening agent; pumping air with the volume of 0.6 times into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, fully soaking the clustered impregnation lines into the prepared aqueous polyurethane foaming slurry; the physical properties of the coating film are as follows: under the test condition of 20 ℃ and 30% 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%; shaping by a mould after penetrating impregnation;
s3, preparing a coagulating liquid: weighing 5 parts of a mixture of tartaric acid and citric acid, wherein the mixing ratio of the tartaric acid to the citric acid is 1:3, and tap water is 80 parts;
s4, condensing the bunched impregnated wire impregnated with the foaming slurry through the coagulating liquid in the coagulating tank to obtain a preliminarily shaped bunched braided wire;
s5, drying: and (3) drying the preliminarily shaped bunched braided wire through an oven at 120-140 ℃, and drying and shaping again to obtain the water-based polyurethane bunched braided wire.
Examples
A method for preparing a water-based polyurethane bundling braided wire, which comprises the following steps:
s1, preparing aqueous polyurethane foaming slurry according to the following components in parts by mass: 300 parts of CT402 anionic waterborne polyurethane resin with the solid content of 40wt%, 1.5 parts of A168 powder dispersing agent, 15 parts of 400-mesh lignocellulose powder, 15 parts of alpha-starch, 10 parts of organosilicon modified K12 foaming agent, 1.5 parts of cross-linking agent and 0.5 part of waterborne thickening agent; pumping air with the volume of 0.6 times into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, fully soaking the clustered impregnation lines into the prepared aqueous polyurethane foaming slurry; the physical properties of the coating film are as follows: under the test condition of 20 ℃ and 30% 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%; shaping by a mould after penetrating impregnation;
s3, preparing a coagulating liquid: weighing 5 parts of a mixture of tartaric acid and citric acid, wherein the mixing ratio of the tartaric acid to the citric acid is 80 parts of tap water with a ratio of 1.5:2;
s4, condensation: condensing the bunched impregnated wire impregnated with the foaming slurry through the coagulating liquid in the coagulating tank to obtain a preliminarily shaped bunched braided wire;
s5, drying: and (3) drying the preliminarily shaped bunched braided wire through an oven at 120-140 ℃, and drying and shaping again to obtain the water-based polyurethane bunched braided wire.
Example 4 (test example)
The air permeability test of the aqueous polyurethane bundling braided wire is to evaluate the air permeability of the polyurethane bundling braided wire material by measuring parameters such as air flow, pressure difference, humidity or temperature in the environment where the sample is located.
Test instrument:
air or moisture permeability: the air permeability instrument is usually independent or fully automatic and comprises an air permeability chamber, a differential pressure sensor and the like. And the moisture permeability meter is used for measuring the moisture permeability of the material.
Temperature and humidity meter: for measuring the temperature and humidity of the test environment.
The testing steps are as follows:
sample preparation: the aqueous polyurethane bundled braided wire samples prepared in examples 1-3 were selected and cut into square samples of specified size as required.
Sample installation: and mounting the cut sample in a ventilation chamber of a ventilation instrument or a moisture permeability instrument, and ensuring complete sealing to avoid air leakage.
Test condition setting: conditions such as temperature, relative humidity, pressure and the like of the test are set according to requirements, and the actual use environment should be generally simulated.
The test starts: starting the air permeability instrument or the moisture permeability instrument, and starting the test under the set test conditions, wherein the test time is generally 1-24 hours, and the specific duration is determined according to the needs.
And (3) data recording: during the test, the temperature, humidity and measured air flow and pressure difference data of the environment where the sample is located are recorded.
Calculate the ventilation rate: and calculating the ventilation rate of the polyurethane bundling braided wire sample according to the test data. The air permeability rate is generally measured as the volume of air per unit area per unit time.
Calculating ventilation resistance: ventilation resistance refers to the ratio between the difference in air pressure between the inside and outside of the sample and the unit air flow rate, and can also be used to evaluate ventilation performance.
The test principle is as follows: the ventilation test of the polyurethane bundling braided wire is mainly based on the principle of gas molecular diffusion. In the testing process, the air permeability meter or the moisture permeability meter can establish a certain pressure difference on two sides of the sample, so that air passes through the sample from a high-pressure area to a low-pressure area. From the measurement results of the test device, the volume of air per unit area per unit time, i.e. the ventilation rate, can be calculated. The higher the air permeability rate, the better the air permeability of the sample; the ventilation resistance represents the resistance which needs to be overcome when the air passes through the sample, and the smaller the ventilation resistance is, the better the ventilation performance of the sample is.
The water-based polyurethane bundling braided wire prepared in the examples 1-3 has excellent air permeability through tests. The water-based polyurethane bunched braided wire prepared in the embodiment 1-3 has excellent moisture permeability, soft hand feeling and strong skin feel through tests.
The embodiment of the present embodiment has been described above, but the embodiment is not limited to the above-described specific implementation, which is only illustrative and not restrictive, and many forms can be made by those of ordinary skill in the art without departing from the spirit of the embodiment and the scope of protection of the claims, which fall within the protection of the embodiment.

Claims (10)

1. The waterborne polyurethane bunched braided wire is characterized by comprising the following steps of:
s1, weighing 250-300 parts by weight of wet polyurethane 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, pumping 0.6 times of air into the mixed slurry, and mechanically foaming to obtain aqueous polyurethane foaming slurry;
s2, impregnating the bunched impregnated wire into the aqueous polyurethane foaming slurry in the step S1 for saturation, and then shaping through a die to obtain a bunched braided wire;
s3, condensing and primarily shaping the bunched braided wire by using a coagulating liquid, wherein the coagulating liquid consists of 5-15 parts by weight of demulsification cross-linking agent and 80-95 parts by weight of water;
s4, drying and shaping the preliminarily shaped bundling braided wire in an oven at 120-140 ℃.
2. 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 aqueous polyurethane bundling braided wire according to claim 1, wherein the cross-linking agent in step S1 is an aziridine cross-linking agent or a carbodiimide cross-linking agent.
4. The aqueous polyurethane bundling braided wire according to claim 1, wherein the powder dispersing agent in step S1 is an ammonium salt powder dispersing agent or a sodium salt powder dispersing agent.
5. The aqueous polyurethane bundling braided wire according to claim 1, wherein the pregelatinized starch in step S1 is alpha-starch, and the particle size of the lignocellulose powder is 400-1000 meshes.
6. The aqueous polyurethane bundling braided wire according to claim 1, wherein the foaming agent in the 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.
7. The aqueous polyurethane bunched braided wire of claim 1, wherein the aqueous thickener in step S1 is an associative polyurethane thickener or an alkali-swellable acrylic thickener.
8. The aqueous polyurethane bundling braided wire according to claim 1, wherein the demulsification crosslinking agent in step S3 is one or a combination of two or more of glacial acetic acid, tartaric acid, citric acid, calcium chloride and aluminum chloride.
9. The aqueous polyurethane bundling braided wire according to claim 1, wherein 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 of 20-25 ℃ and 30-50% of humidity.
10. A water-based polyurethane bunched braided wire, characterized by being prepared by the preparation method of any one of claims 1-9.
CN202311646172.1A 2023-12-04 2023-12-04 Water-based polyurethane bundling braided wire and preparation method thereof Pending CN117364495A (en)

Priority Applications (1)

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CN202311646172.1A CN117364495A (en) 2023-12-04 2023-12-04 Water-based polyurethane bundling braided wire and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311646172.1A CN117364495A (en) 2023-12-04 2023-12-04 Water-based polyurethane bundling braided wire and preparation method thereof

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CN117364495A true CN117364495A (en) 2024-01-09

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