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Preparation method of polyurethane coating for textiles comprising nanofiller and Coptis chinensis extract

A polyurethane coating and nano-filler technology, which is applied in textiles and papermaking, etc., achieves the effects of large specific surface, high surface energy, and clean and environmentally friendly preparation process.

Active Publication Date: 2021-04-02
四川省纤维检验局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Medicinal plants are widely used in traditional Chinese medicine. Their extracts have the functions of antibacterial and detumescence. Through the composition formed with polyurethane emulsion for coatings, textiles can be endowed with many special functions. So far, no extracts containing Coptis chinensis have been found. The report of textile coating, especially the polyurethane coating that comprises nano filler and Coptidis Rhizoma extract, the present invention aims to provide the preparation method of this type of polyurethane coating that comprises nano filler and Coptidis Rhizoma extract

Method used

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  • Preparation method of polyurethane coating for textiles comprising nanofiller and Coptis chinensis extract
  • Preparation method of polyurethane coating for textiles comprising nanofiller and Coptis chinensis extract
  • Preparation method of polyurethane coating for textiles comprising nanofiller and Coptis chinensis extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The formula composition of coating is as follows:

[0035]

[0036] The method of preparation is as follows:

[0037] (1) Melt and mix 10g of dihydric alcohol (YMER N-120) containing non-ionic hydrophilic groups in the side chain and 90g of polytetrahydrofuran diol (PTMG 3K, Mn=3000) at a temperature of 58°C, and pass through a vacuum of 0.09MPa , Dehydration treatment at a temperature of 128°C, molar ratio n NCO / n OH Add 24.0 g of diisocyanate (HDI) at about 3.8, and react at a temperature of 98 ° C for 115 min to obtain a polyurethane prepolymer (a);

[0038] (2) Add 6.0 g of dimethylol butyric acid (DMBA) and 8 g of solvent DMF to the polyurethane prepolymer (a), control the temperature at 92° C. to continue the reaction for 140 min, and add 3.2 g of a salt-forming agent (triethylamine) to obtain water dispersible polyurethane prepolymer (b);

[0039] (3) Disperse the polyurethane prepolymer (b) in 205 g of the prepared Coptis chinensis extract under high-spe...

Embodiment 2

[0042] The formula composition of coating is as follows:

[0043]

[0044] The method of preparation is as follows:

[0045] (1) Melt and mix 10g of dihydric alcohol (YMER N-120) containing non-ionic hydrophilic groups in the side chain and 80g of polytetrahydrofuran diol (PTMG 2K, Mn=2000) at a temperature of 53°C, and pass through a vacuum of 0.08MPa , Dehydration treatment at a temperature of 123°C, molar ratio n NCO / n OH Add 35.0 g of diisocyanate (IPDI) at about 3.3, and react at a temperature of 93 ° C for 105 min to obtain a polyurethane prepolymer (a);

[0046] (2) Add 5.0 g of dimethylol butyric acid (DMBA) and 10 g of solvent DMF to the polyurethane prepolymer (a), control the temperature at 85° C. to continue the reaction for 120 min, and add 2.56 g of a salt-forming agent (triethylamine) to obtain water dispersible polyurethane prepolymer (b);

[0047] (3) Disperse the polyurethane prepolymer (b) in 185 g of the prepared Coptis chinensis extract under high-...

Embodiment 3

[0050] The formula composition of coating is as follows:

[0051]

[0052] The method of preparation is as follows:

[0053] (1) Melt and mix 13g of dihydric alcohol (YMER N-120) containing non-ionic hydrophilic groups in the side chain and 87g of polytetrahydrofuran diol (PTMG 2K, Mn=2000) at a temperature of 47°C, and pass through a vacuum of 0.07MPa , Dehydration treatment at a temperature of 117°C, molar ratio n NCO / n OH Add 33.5g of diisocyanate (IPDI) at about 2.8, and react at a temperature of 87°C for 97min to obtain a polyurethane prepolymer (a);

[0054] (2) Add 2.8 g of dimethylolpropionic acid (DMPA) and 14 g of solvent DMF to the polyurethane prepolymer (a), control the temperature at 77° C. to continue the reaction for 90 min, and add 1.4 g of a salt-forming agent (triethylamine) to obtain water dispersible polyurethane prepolymer (b);

[0055] (3) Disperse the polyurethane prepolymer (b) in 168 g of the prepared Coptidis rhizome extract under high-speed ...

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Abstract

The invention discloses a preparation method of a polyurethane coating material for textile fabrics comprising a nano filler and a coptis chinensis extract. The textile coating material comprises thefollowing main components by mass: 83-90 % of polyurethane emulsion containing the coptis chinensis extract, 5-15 % of nano filler dispersion, 0.6-2 % of a coupling agent, 0.3-1 % of a base material wetting agent, 0.3-1 % of a defoaming and foam inhibiting agent, 0.5-2 % of an aqueous thickening agent, and 0.3-1 % of an aqueous leveling agent. The preparation includes adding the nano filler dispersion, the coupling agent, the base material wetting agent, the defoaming and foam inhibiting agent and the aqueous leveling agent into the polyurethane emulsion containing the coptis chinensis extractaccording to the composition; stirring and dispersing the solution for 20-100 minutes; adding the aqueous thickening agent; and filtering the solution to obtain the textile coating material to be prepared. According to the polyurethane coating material, the coptis chinensis extract is innovatively applied, and the nano filler with a special effect is added, so that the antibacterial, ultravioletresistance, aging resistance and other properties of the coating material can be improved and enhanced.

Description

technical field [0001] The invention relates to the technical field of textile coatings, in particular to a preparation method of polyurethane coatings for textiles. [0002] technical background [0003] The textile industry is a traditional labor-intensive industry. China is already the world's largest textile processing country and the largest textile exporter. The textile industry plays an important role in stabilizing employment, increasing national income, and improving import and export trade. With the progress and development of society, under the influence of multiple factors such as the general environment, consumer demand, and labor costs, new changes are gradually taking place in China's textile industry, especially the increasing consumer demand for functional textiles. The supply-side structural reform of the textile and garment industry urgently requires the development of high-performance, multi-functional textile fabrics. Coatings are mixtures coated on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14D06N3/00C08G18/66C08G18/48C08G18/12C08G18/34
CPCC08G18/12C08G18/4854C08G18/6692D06N3/0061D06N3/0063D06N3/14D06N2209/1671D06N2209/1678D06N2211/10C08G18/348
Inventor 陈政辛中印谭淋赵瑞方吴楠刘铁砚
Owner 四川省纤维检验局
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