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A kind of solvent-free polyurethane-organosilicon synthetic leather based on UV curing and its manufacturing method

A solvent-free polyurethane and organosilicon synthetic leather technology, applied in textiles and papermaking, etc., to achieve the effect of improving quality and international market competitiveness, high efficiency and excellent comprehensive performance

Active Publication Date: 2021-07-27
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few reports on the application of UV curing technology in the field of solvent-free polyurethane modified silicone synthetic leather.

Method used

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  • A kind of solvent-free polyurethane-organosilicon synthetic leather based on UV curing and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Manufacture of solvent-free polyurethane-silicon synthetic leather for clothing

[0031] (1) Preparation of UV-curable solvent-free polyurethane:

[0032] After vacuum dehydration, 40 parts of polyadipate-1,3-butylene glycol ester diol with a number average molecular weight of 2000, 15 parts of polypropylene carbonate diol with a number average molecular weight of 1000, and polypropylene glycol with a number average molecular weight of 4000 20 parts and 1.5 parts of 1,4-butanediol were added to the reaction kettle, followed by adding 10 parts of isophorone diisocyanate, 10 parts of hexamethylene diisocyanate, and 0.1 parts of organic bismuth catalyst, and the temperature was raised to 85 °C. After stirring for 1 hour, add 1.0 part of trimethylolpropane, continue stirring and reacting at 85 °C for 1.5 h, then cool down, add β-hydroxyethyl acrylate to block at 60 °C, and measure -NCO group by di-n-butylamine method After the group reaction is complete, the UV-curable sol...

Embodiment 2

[0039] Manufacture of solvent-free polyurethane-silicon synthetic leather for automotive interior

[0040] (1) Preparation of UV-curable solvent-free polyurethane:

[0041] Add 20 parts of polypropylene carbonate diol with a number average molecular weight of 3000 after vacuum dehydration, 30 parts of polypropylene glycol with a number average molecular weight of 2000, and 1.0 parts of 1,4-butanediol into the reactor, and then add diphenyl 15 parts of methane diisocyanate, 0 parts of organic bismuth catalyst, heat up to 75 °C, stir for 1.5 h, add 1.0 parts of trimethylolpropane, continue stirring for 1 h at 75 °C, cool down, add 4-hydroxybutyl vinyl ether End-capping at 55°C, after the reaction of -NCO groups is completely determined by the di-n-butylamine method, a UV-curable solvent-free polyurethane prepolymer containing photosensitive groups in both end groups and side chains is prepared, sealed and packaged for waiting use;

[0042] (2) Preparation of UV-curable slurry:...

Embodiment 3

[0048] Manufacture of Solvent-free Polyurethane-Organosilicon Synthetic Leather for Sofa

[0049] (1) Preparation of UV-curable solvent-free polyurethane:

[0050] Add 45 parts of polypropylene glycol with a number average molecular weight of 2000 after vacuum dehydration and 1.0 part of 1,4-butanediol into the reaction kettle, then add 12 parts of hexamethylene diisocyanate and 0.05 parts of organic bismuth catalyst in sequence, and heat up to 85 ℃, stirred for 1 h, then added 1.0 parts of trimethylolpropane, continued to stir and react for 1 h at 85 ℃, then cooled down, added β-hydroxyethyl methacrylate to block at 60 ℃, and di-n-butylamine Determination by method - after the NCO group is completely reacted, the UV-curable solvent-free polyurethane prepolymer containing photosensitive groups in both the end group and the side chain is prepared, sealed and packaged for use;

[0051] (2) Preparation of UV curable slurry: 80 parts of UV curable solvent-free polyurethane, 20 pa...

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Abstract

The invention discloses a solvent-free polyurethane-organic silicon synthetic leather based on UV curing and a manufacturing method thereof, which is characterized in that the mixed slurry of solvent-free polyurethane containing photosensitive groups and photosensitive polysiloxane is directly injected and coated on On the synthetic leather base material, it is cured by ultraviolet light to obtain a semi-finished product; then the surface texture of the synthetic leather is given by vacuum embossing, and an environmentally friendly polyurethane-organic silicon synthetic leather is obtained. The present invention adopts UV curing technology. On the one hand, organic solvents can be eliminated from the source, and has the characteristics of high production efficiency, low energy consumption, and environmental friendliness; Complementary advantages give synthetic leather more excellent performance, reduce the cost of silicone synthetic leather, and improve the quality, ecological level and international market competitiveness of synthetic leather.

Description

technical field [0001] The invention relates to a UV-cured solvent-free polyurethane-organosilicon synthetic leather and a manufacturing method thereof, belonging to the field of synthetic leather manufacturing. Background technique [0002] my country is a big producer and consumer of synthetic leather. According to statistics, in 2017, the annual output of artificial leather and synthetic leather in my country was about 3.68 million tons, accounting for more than 70% of the world's total output. [0003] In recent years, with the improvement of people's living standards, consumers' demand for high-quality, high-environment-friendly ecological synthetic leather continues to rise. At the same time, in addition to traditional shoe upper leather, luggage leather, and clothing leather, the demand for leather in high-end fields such as aircraft, high-speed rail, yachts, and automobiles is increasing. The market strongly calls for high-quality ecological synthetic leather to mee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0077D06N3/142D06N3/146D06N3/147D06N2211/28
Inventor 范浩军孙哲陈意颜俊向均文嘉婷
Owner SICHUAN UNIV
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