CN112726222B - Hot-melt reactive polyurethane coating adhesive and waterproof moisture-permeable fabric - Google Patents
Hot-melt reactive polyurethane coating adhesive and waterproof moisture-permeable fabric Download PDFInfo
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- CN112726222B CN112726222B CN202011439740.7A CN202011439740A CN112726222B CN 112726222 B CN112726222 B CN 112726222B CN 202011439740 A CN202011439740 A CN 202011439740A CN 112726222 B CN112726222 B CN 112726222B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/141—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of two or more polyurethanes in the same layer
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0034—Polyamide fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/126—Permeability to liquids, absorption
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/142—Hydrophobic
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a hot-melt reactive polyurethane coating adhesive and a waterproof moisture-permeable fabric. The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 80-90% of TPU particles, 7-17% of crystalline NCO-terminated polyurethane prepolymer and 3% of auxiliary agent. The hot-melt reactive polyurethane coating adhesive reduces the use of solvents, reduces the subsequent heating process and saves energy.
Description
Technical Field
The invention relates to a hot-melt reactive polyurethane coating adhesive and a waterproof moisture-permeable fabric, belonging to the technical field of textile processing.
Background
The waterproof performance of the textile means that the fabric has the ability to prevent rainwater and snow water in the external environment from penetrating from outside to inside; the moisture permeability of the textile means that the fabric has the ability to diffuse sweat emitted by the human body in the form of water vapor through the fabric to the surrounding environment. The waterproof and moisture permeable performance of the textile means that external rainwater and snow water cannot permeate into the textile, and internal sweat can be quickly transferred and evaporated to the outside through the textile, so that microclimate between a human body and clothing is regulated, and dryness and warmth of a wearer are maintained.
Polyurethane has unique flexibility, wear resistance, bacteria resistance and good texture, and is widely applied to the preparation of medium-high end fabrics. The waterproof moisture-permeable coating adhesive for textiles at present mainly comprises polyurethane, and is divided into solvent polyurethane and water polyurethane. The solvent type polyurethane waterproof moisture-permeable coating adhesive uses organic solvents, and most of the organic solvents have toxicity and generate pollution; the water-based polyurethane waterproof moisture-permeable coating adhesive needs a large amount of energy to dry and volatilize moisture in the production and use process, the waterproof and moisture-permeable performances are not ideal, and the hot-melt coating adhesive without moisture permeability is also available on the market at present.
Therefore, a hot-melt reactive polyurethane coating adhesive and a waterproof moisture-permeable fabric are necessary.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a hot-melt reactive polyurethane coating adhesive and a waterproof moisture-permeable fabric.
The invention is realized by the following technical scheme:
the hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 80-90% of TPU particles, 7-17% of crystalline NCO-terminated polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is a polymer of isocyanate and polyol (the terminal group is NCO); wherein the isocyanate is one or more of TDI (toluene diisocyanate), MDI (xylyl methane diisocyanate), IPDI (isophorone diisocyanate) or PAPI (polymethylene polyphenyl isocyanate); the polyol is polycaprolactone polyol with different molecular weights.
The auxiliary agent comprises one or more of a heat stabilizer, an antioxidant, an ultraviolet absorber, a filler or an organosilicon anti-adhesion agent.
The filler is a mixture of calcium carbonate and titanium dioxide.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
The fabric is nylon.
A waterproof moisture-permeable fabric is produced by a production method of the waterproof moisture-permeable fabric.
The invention has the beneficial effects that:
when the hot-melt reactive polyurethane coating adhesive is used, NCO in the crystalline-end NCO polyurethane prepolymer slowly reacts with water in the air to generate carbon dioxide, a large number of microbubbles can be formed in a coating layer, the pore size is between the minimum diameter of water drops (100 mu m) and the diameter of water vapor (0.0004 mu m), and the fabric can only allow water vapor molecules to pass through and prevent water drops from penetrating, so that the fabric has a waterproof function and a good moisture permeability effect, and meanwhile, the hand feeling of the coating fabric can be soft.
The hot-melt reactive polyurethane coating adhesive reduces the use of solvents, reduces the subsequent heating process and saves energy.
Detailed Description
The invention is further described below. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: TPU particles (F-3380A, available from Zhejiang Hua peak thermoplastic polyurethane Co., ltd.) 90%, crystalline terminal NCO polyurethane prepolymer 7% and auxiliary 3%.
The crystalline terminal NCO polyurethane prepolymer is a polymer of TDI (toluene diisocyanate) and polycaprolactone polyol with molecular weight of 3000 (terminal NCO).
The auxiliary agent comprises a heat stabilizer, an antioxidant, an ultraviolet absorber, calcium carbonate titanium white powder and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
When the coating layer is used, NCO in the crystalline-end NCO polyurethane prepolymer slowly reacts with water in the air to generate carbon dioxide, a large number of microbubbles can be formed in the coating layer, and the pore size is between the minimum diameter of water drops (100 mu m) and the diameter of water vapor (0.0004 mu m), so that the fabric can only allow water vapor molecules to pass through and prevent water drops from penetrating, and the fabric has a waterproof function and a good moisture permeability effect, and meanwhile, the feel of the coating fabric can be soft.
Example 2
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 90% of TPU particles, 7% of crystalline NCO-terminated polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is MDI (xylyl methane diisocyanate) and polycaprolactone polyol with molecular weight of 3000 (terminal NCO);
the auxiliary agent comprises a heat stabilizer, an antioxidant, an ultraviolet absorber, calcium carbonate, titanium pigment and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
Example 3
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 90% of TPU particles, 7% of crystalline NCO-terminated polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is a polymer of IPDI (isophorone diisocyanate) and polycaprolactone polyol with molecular weight of 3000 (terminal group is NCO);
the auxiliary agent comprises a heat stabilizer, an antioxidant, an ultraviolet absorber, calcium carbonate, titanium pigment and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
Example 4
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 85% of TPU particles, 12% of crystalline end NCO polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is PAPI (polymethylene polyphenyl isocyanate) and polycaprolactone polyol with molecular weight of 2000 (terminal NCO).
The auxiliary agent comprises a heat stabilizer, an antioxidant, an ultraviolet absorber, calcium carbonate and titanium dioxide.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
Example 5
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 85% of TPU particles, 12% of crystalline end NCO polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is a polymer of TDI (toluene diisocyanate) and polycaprolactone polyol with a molecular weight of 2000 (the terminal group is NCO);
the auxiliary agent comprises one or more of a heat stabilizer, an ultraviolet absorber, calcium carbonate, titanium pigment and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
Example 6
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 85% of TPU particles, 12% of crystalline end NCO polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is a polymer of TDI (toluene diisocyanate) and polycaprolactone polyol with a molecular weight of 2000 (the terminal group is NCO);
the auxiliary agent comprises one or more of heat stabilizer, antioxidant, calcium carbonate, titanium pigment and organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
Example 7
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 80% of TPU particles, 17% of crystalline NCO-terminated polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is PAPI (polymethylene polyphenyl isocyanate) and polycaprolactone polyol with molecular weight of 1000 (terminal NCO);
the auxiliary agent comprises a heat stabilizer, an antioxidant, an ultraviolet absorber, calcium carbonate, titanium pigment and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
Example 8
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 80% of TPU particles, 17% of crystalline NCO-terminated polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is a polymer of TDI (toluene diisocyanate) and polycaprolactone polyol with molecular weight of 1000 (the terminal group is NCO);
the auxiliary agent comprises a heat stabilizer, an antioxidant, an ultraviolet absorber and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring, coating on the fabric, and ageing.
Example 9
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 80% of TPU particles, 17% of crystalline NCO-terminated polyurethane prepolymer and 3% of auxiliary agent.
The crystalline terminal NCO polyurethane prepolymer is a polymer of TDI (toluene diisocyanate) and polycaprolactone polyol with molecular weight of 500 (the terminal group is NCO);
the auxiliary agent comprises one or more of a heat stabilizer, an antioxidant, an ultraviolet absorber and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as mixing TPU particles, crystalline NCO polyurethane prepolymer and assistant, screw stirring at 150-180 deg.C, coating it on the fabric, and ageing.
Comparative example 1
The hot-melt reactive polyurethane coating adhesive comprises the following raw materials in parts by weight: 97% of TPU particles and 3% of auxiliary agents. The auxiliary agent comprises one or more of a heat stabilizer, an antioxidant, an ultraviolet absorber and an organosilicon anti-sticking agent.
A process for preparing the water-proof and moisture-permeable fabric includes such steps as uniformly mixing TPU particles with assistant at 150-180 deg.C by screw, coating it on fabric by hot-melt adhesive, and curing.
The nylon fabric was tested for hydrostatic resistance by using GB/T4744 and moisture permeability by using GB/T12704.1, and the test results are shown in the following table.
| Hydrostatic pressure resistance (kPa/cm water column) | Moisture permeability test (g/m 2. Times.24 h) | |
| Example 1 | 6102 | 1742 |
| Example 2 | 5250 | 1765 |
| Example 3 | 5500 | 1957 |
| Example 4 | 1951 | 2500 |
| Example 5 | 1921 | 2624 |
| Example 6 | 1510 | 3825 |
| Example 7 | 1951 | 6450 |
| Example 8 | 1921 | 6850 |
| Example 9 | 1925 | 8125 |
| Comparative example 1 | 18100 | 18 |
As can be seen from the table, the crystalline end NCO polyurethane prepolymer is added in the nylon fabric, and the treated nylon fabric has good hydrostatic pressure resistance and good moisture permeability.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. The hot-melt reactive polyurethane coating adhesive is characterized by comprising the following raw materials in parts by weight: 80-90% of TPU particles, 7-17% of crystalline end NCO polyurethane prepolymer and 3% of auxiliary agent, wherein the crystalline end NCO polyurethane prepolymer is a polymer of isocyanate and polyol, and the end group of the polymer is NCO; wherein the isocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate or polymethylene polyphenyl isocyanate; the polyol is polycaprolactone polyol with different molecular weights.
2. The hot-melt reactive polyurethane coating adhesive of claim 1, wherein the auxiliary agent comprises one or more of a heat stabilizer, an antioxidant, an ultraviolet absorber, a filler, or a silicone adhesion inhibitor.
3. The hot melt reactive polyurethane coating adhesive of claim 2, wherein the filler is a mixture of calcium carbonate and titanium dioxide.
4. A production method of waterproof and moisture permeable fabric, which adopts the coating adhesive according to any one of claims 1-3, and is characterized in that TPU particles, crystalline NCO polyurethane prepolymer and auxiliary agent are uniformly mixed by a screw under the condition of the temperature of 150-180 ℃, injected into a hot melt adhesive scraper coater, coated on the fabric and cured in the environment.
5. The method for producing a waterproof and moisture permeable fabric according to claim 4, wherein the fabric is nylon.
6. A waterproof moisture-permeable fabric prepared by the production method of the waterproof moisture-permeable fabric as claimed in claim 4 or 5.
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| CN112726222B true CN112726222B (en) | 2023-05-05 |
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