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Washing resistant adhesive and preparation method thereof

An adhesive and water-resistant technology, used in the field of textile printing and dyeing auxiliaries, can solve the problems of reduced water resistance, peeling, poor storage performance, etc., and achieve the effect of reducing the water absorption rate of the film, improving water resistance, and low water resistance

Inactive Publication Date: 2016-02-03
JIAXING ROCK CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyurethane segment contains a large number of hydrophilic groups or segments, which are used as the coating finishing of the fabric. However, after repeated washings, the peeling strength often decreases or even peels off, and the water resistance cannot be achieved.
Generally, the external linking method is adopted, such as adding a blocked water-based polyurethane curing agent or an aziridine type cross-linking agent to improve the water resistance of the coating, but the polyurethane emulsion obtained by this method has the disadvantages of short service life, poor storage performance, and high toxicity. , and it can be used only after the external linking agent and coating agent are formulated, and the operation is complicated
In addition, the service life of most water-resistant adhesives has a certain limit, and some have good mechanical performance, but the degree of water resistance is greatly reduced.

Method used

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  • Washing resistant adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Table 1 is the test results of each parameter of the adhesive

[0030] Formulation amount of trimethylolpropane used (%) Particle size (nm) Water loss rate (%) Film water absorption (%) Elongation at break (%) Tensile strength (MPa) Hydrostatic pressure resistance (mm) 0.5 50 69 49 510 11.6 192

[0031] As can be seen from Table 1, 16 parts of organic solvent dimethylformamide, 30.5 parts of polyester polyol, 1 part of ethylene glycol, 1 part of 1.4 butanediol, and 0.1 part of antioxidant (SP-10) were put into the reactor , stirred at room temperature for 30 minutes to make it evenly mixed, added 2 parts of 4,4 xylylmethane diisocyanate, and then added 2 parts of 4,4 xylylmethane diisocyanate into the reaction kettle every half hour, 0.5 Add 2 parts of 4,4-xylylene diisocyanate and 0.05 parts of catalyst V-600 after 1 hour, then control the reaction temperature at 70°C, fully react for 2 hours, then add 15 parts of 2,4-xylylene diisocy...

Embodiment 2

[0033] Table 2 is the test results of each parameter of the adhesive

[0034] Formulation amount of trimethylolpropane used (%) Particle size (nm) Water loss rate (%) Film water absorption (%) Elongation at break (%) Tensile strength (MPa) Hydrostatic pressure resistance (mm) 0.7 55 86 34 470 12.8 239

[0035] As can be seen from Table 2, 24 parts of organic solvent dimethylformamide, 35 parts of polyester polyol, 2 parts of ethylene glycol, 10 parts of 1.4 butanediol, and 0.1 part of antioxidant (SP-10) were put into the reactor , stir at room temperature for 45 minutes to make it evenly mixed, add 2 parts of 4,4-xylylmethane diisocyanate, and then add 2 parts of 4,4-xylylmethane diisocyanate into the reaction kettle every half hour, 0.5 Add 2 parts of 4,4 xylylene diisocyanate and 0.06 parts of catalyst V-600 after 1 hour, and then control the reaction temperature at 70°C, and fully react for 2 hours, then add 15 parts of 2,4 toluene diisoc...

Embodiment 3

[0037] Table 3 is the test results of each parameter of the adhesive

[0038] Formulation amount of trimethylolpropane used (%) Particle size (nm) Water loss rate (%) Film water absorption (%) Elongation at break (%) Tensile strength (MPa) Hydrostatic pressure resistance (mm) 1.0 60 74 45 400 13.4 210

[0039] As can be seen from Table 3, 24 parts of organic solvent dimethylformamide, 35 parts of polyester polyol, 2.5 parts of ethylene glycol, 12 parts of 1.4 butanediol, and 0.3 parts of antioxidant (SP-10) were put into the reactor , stirred at room temperature for 60 minutes to make it evenly mixed, added 2 parts of 4,4 xylylmethane diisocyanate, and then added 2 parts of 4,4 xylylmethane diisocyanate into the reaction kettle every half hour, 0.5 Add 2 parts of 4,4 xylylene diisocyanate and 0.06 parts of catalyst V-600 after 1 hour, then control the reaction temperature at 75°C, and fully react for 2 hours, then add 15 parts of 2,4 toluene ...

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Abstract

The invention discloses a washing resistant adhesive and a preparation method thereof. The adhesive comprises the following raw materials in percentage by weight: 30.5 to 35% of polyester polyol, micromolecular polyol mixture composed of 1 to 3% of glycol and 1 to 35% of 1,4-butylene glycol, 4 to 14% of 4,4-diphenylmethane diisocyanate, 15 to 20% of 2,4-toluene diisocyanate, 20 to 45% of organic solvent namely dimethyl formamide, 0.1 to 0.3% of antioxidant (SP-10), 0.05 to 0.07% of catalyst (V-600), 3 to 5% of unsaturated polyester SK-310, and 0.5 to 1% of trimethylol propane; wherein the polyester polyol is a polyether-segmented-polyamide copolymer (PEBA) with a molecular weight of 2000, the micromolecular polyol mixture comprises glycol and 1,4-butylene glycol, and the organic solvent is dimethyl formamide. The adhesive has the characteristics of hydrolysis resistance, high peel strength, and good stability.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing auxiliaries, and in particular relates to a washable adhesive and a preparation method thereof. Background technique [0002] Clothing bonding technology is a commonly used method in clothing processing and production. Adhesives play a leading role in the application of bonding technology. Nowadays, clothing manufacturers usually use water-based polyurethane resin as adhesive, and fabrics and breathable membranes are bonded together. Adhering together at a certain temperature and time to achieve hydrolysis resistance and high peel strength. Polyurethane is a polymer with water as the dispersion medium. It has the advantages of good film-forming properties, excellent elasticity, wear resistance, high bonding fastness with fabrics and environmental protection. It is one of the preferred materials for fabric coating agents. However, the polyurethane segment contains a large num...

Claims

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Application Information

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IPC IPC(8): D06P1/52C08G18/66C08G18/42C08G18/68C08G18/32
Inventor 张国荣
Owner JIAXING ROCK CHEM IND
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