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Graphene-organosilicon modified urethane resin synthetic leather

A polyurethane resin and graphene technology, applied in polyurea/polyurethane coatings, polyester coatings, coatings, etc., can solve the problems of high cost, inability to effectively play graphene characteristics, graphene copolymerization, etc., and achieve high and low temperature resistance Excellent performance, long-term stability of appearance and structural characteristics, and low surface energy

Inactive Publication Date: 2017-05-24
康伦国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Chinese patent CN105926308A relates to a formula and process for the production of synthetic leather by graphene-modified water-based polyurethane. Although this patent also uses graphene-modified water-based polyurethane, it uses a physical blending method, which is likely to cause graphene. Copolymerization, the characteristics of graphene cannot be effectively utilized, and its cost is relatively high. The present invention uses graphene and silicon to chemically modify water-based polyurethane, which can not only obtain good wear resistance, but also improve the gloss and bright color of synthetic leather. This can also effectively solve the problem of static electricity generated by synthetic leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of graphene-organosilicon modified polyurethane resin, its preparation process is as follows:

[0033] a. In a four-port reactor equipped with a thermometer, a condenser, and an agitator, add 3.0 parts of butanediol, 1.5 parts of trimethylolpropane, 1.5 parts of graphene, and polytetrahydrofuran polyol in sequence according to the weight percentage of the formula 6.0 parts, 2.6 parts of dimethylol propionic acid, heated to 95-110°C for vacuum dehydration for 1.5-2.0 hours;

[0034] b, a, in a four-port reactor equipped with a thermometer, a condenser, and an agitator, according to the weight percentage of the formula, add 3.0 parts of butanediol, 1.5 parts of trimethylolpropane, 1.5 parts of graphene, polytetrahydrofuran 6.0 parts of polyols, 2.6 parts of dimethylol propionic acid, heated to 95-110°C for vacuum dehydration for 1.5-2.0 hours;

[0035] c. Continue to stir to lower the temperature below 40°C, slowly add 1.9 parts of neutralizing agent triethylamine...

Embodiment 2

[0037] A kind of graphene-organosilicon modified polyurethane resin, its preparation process is as follows:

[0038] a. In a four-port reactor equipped with a thermometer, a condenser, and an agitator, according to the weight percentage of the formula, 3.2 parts of neopentyl glycol, 1.2 parts of trimethylolpropane, 1.6 parts of graphene, and polytetrahydrofuran 5.5 parts of alcohol, 2.4 parts of dimethylolpropionic acid, heated to 95-110°C for vacuum dehydration for 1.5-2.0 hours;

[0039]b. Cool down to 60-70°C, add 2.5 parts of hydroxyl-terminated polydimethylsiloxane, dropwise add 15.0 parts of toluene diisocyanate, and finish adding dropwise in 0.5-1 hour; then add dropwise 0.05 part of dibutyltin dilaurate, and heat up React at 80-82°C for 2-2.5 hours, add 6.5 parts of acetone, measure the NCO value, and stop the reaction when the measured value is close to the theoretical design value;

[0040] c. Continue stirring to lower the temperature below 40°C, slowly add 2.0 par...

Embodiment 3

[0042] A kind of technique of graphene-organosilicon modified polyurethane resin synthetic leather, comprises the steps:

[0043] A, prepare coating liquid, with graphene-organosilicon modified polyurethane resin A40.0 parts, fluorine modified alkyd resin 25.0 parts, propylene glycol monobutyl ether 4.0 parts, leveling agent 0.8 parts, foaming agent 1.2 parts, Add 5.0 parts of filler, 2.0 parts of water-based color paste, 10.0 parts of plasticizer, 4.0 parts of ammonium stearate emulsion, and 6.5 parts of deionized water into the container according to the proportion, disperse with a mixer, stir evenly and filter, add 1.5 parts of thickener Adjust viscosity;

[0044] B. Pass the prepared coating solution through an intelligent dynamic foam generator to make a coating foam, and then apply the coating foam to the leather base cloth;

[0045] C. After the coating is completed, place it in an oven to dry to obtain a graphene-organosilicon modified polyurethane resin foamed bass. ...

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PUM

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Abstract

The invention relates to a graphene-organosilicon modified urethane resin synthetic leather, which is prepared from the following ingredients: graphene-organosilicon modified urethane resin, fluorine-modified alkide resin, propylene glycol n-butyl ether, a flatting agent, a thickening agent, a foaming agent, a filler, a water-based color paste, a plasticizer, an ammonium stearate emulsion and de-ionized water, wherein the graphene-organosilicon modified urethane resin is prepared through reaction of polyisocyanate, polyhydric alcohol, a polybasic amine chain extender, oligomer polyhydric alcohol, dimethylolpropionic acid, organosilicon, graphene, a neutralizer and de-ionized water; the synthetic leather prepared by the invention is capable of effectively preventing statical electricity, and has the characteristics of good abrasion resistance, high crosslinking density, good chemical resistance and no pollution.

Description

technical field [0001] The invention relates to a synthetic leather and textile technology, in particular to a formula and process technology of a graphene-organosilicon modified polyurethane resin synthetic leather, which belongs to the technical field of synthetic leather and water-based paint. Background technique [0002] In my country, the earliest artificial leather was the nitrocellulose varnished cloth produced by the Shanghai varnished cloth production cooperative in the 1940s, which opened the prelude to the development of artificial leather in my country. As a major producer of artificial leather and synthetic leather, my country is facing increasing pressure while its output and total output value are growing steadily. Especially for exports, its environmental protection requirements are becoming more and more stringent, which poses a severe test for synthetic leather manufacturers. . [0003] At present, artificial leather has been widely used in thousands of va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14C09D175/08C09D167/08C09D7/12C08G18/66C08G18/48C08G18/34C08G18/32C08G18/65C08G18/40C08G18/61C08G18/08
CPCD06N3/142C08G18/0823C08G18/3206C08G18/348C08G18/4009C08G18/4854C08G18/61C08G18/6541C08G18/6692C09D7/61C09D7/63C09D175/08D06N3/005D06N3/0061D06N3/0063D06N3/146D06N3/147D06N2209/046D06N2209/143D06N2209/1685D06N2211/28C08L67/08C08K13/02C08K3/04C08K5/098
Inventor 康伦国
Owner 康伦国
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