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Preparation method of light-cured base for synthetic leather

A light-curing, synthetic leather technology, used in textiles and papermaking, etc., can solve problems such as water pollution of synthetic leather, and achieve the effects of uniform and fine cells, shape retention and excellent peel strength performance.

Active Publication Date: 2018-07-31
LISHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, a large amount of hydrophilic solvents are dissolved in water, thus causing serious water pollution in the production of synthetic leather

Method used

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  • Preparation method of light-cured base for synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of photocurable water-in-oil emulsion

[0021] In the dispersing kettle equipped with high-speed electric shearing machine, constant pressure funnel, ultrasonic vibrating rod, add 100 parts of polyurethane acrylate photocurable resin, 0.5 part of BASF IRGACURE 2959 photoinitiator and 0.5 part of BASF IRGACURE 1173 photoinitiator, non 1 part of ionic emulsifier (Span-80) and 0.5 part of non-ionic emulsifier (Tween-80), at room temperature (25°C), with a shear rate of 1300r / min, ultrasonic rod power of 2000W, through constant pressure 20 parts of saturated sodium chloride aqueous solution were added dropwise to the funnel, and the dropwise addition was complete within 1 hour to form a stable water-in-oil emulsion.

[0022] (2) Coat the water-in-oil emulsion prepared above and the pre-treated non-woven fabric with a coating thickness of 10 microns. At room temperature (25°C), use an ultraviolet light source to cure the water-in-oil emulsion for 20 seconds ...

Embodiment 2

[0024] (1) Preparation of photocurable water-in-oil emulsion

[0025] In the dispersing kettle equipped with high-speed electric shearing machine, constant pressure funnel, ultrasonic vibrating rod, add 100 parts of polyurethane acrylate photocurable resin, 0.5 part of BASF IRGACURE 2959 photoinitiator and 0.5 part of BASF IRGACURE 1173 photoinitiator, non 1 part of ionic emulsifier (Span-80) and 0.5 part of non-ionic emulsifier (Tween-80), at room temperature (25°C), with a shear rate of 1300r / min, ultrasonic rod power of 2000W, through constant pressure 40 parts of saturated aqueous sodium bicarbonate solution was added dropwise to the funnel, and the dropwise addition was completed within 1 hour to form a stable water-in-oil emulsion.

[0026] (2) Coat the water-in-oil emulsion prepared above and the pre-treated non-woven fabric with a coating thickness of 20 microns. At room temperature (25°C), use an ultraviolet light source to cure the water-in-oil emulsion for 30 second...

Embodiment 3

[0028] (1) Preparation of photocurable water-in-oil emulsion

[0029] In the dispersing kettle equipped with high-speed electric shearing machine, constant pressure funnel, ultrasonic vibrating rod, add 100 parts of polyurethane acrylate photocurable resin, 0.5 part of BASF IRGACURE 2959 photoinitiator and 0.5 part of BASF IRGACURE 1173 photoinitiator, non 1 part of ionic emulsifier (Span-80) and 0.5 part of non-ionic emulsifier (Tween-80), at room temperature (25°C), with a shear rate of 1300r / min, ultrasonic rod power of 2000W, through constant pressure The funnel was dripped with 40 parts of saturated aqueous sodium bicarbonate solution, and the addition was complete in 1 hour to form a stable water-in-oil emulsion.

[0030] (2) Coat the water-in-oil emulsion prepared above with a pre-treated non-woven fabric with a coating thickness of 50 microns. At room temperature (25°C), use a UV light source to cure the water-in-oil emulsion for 30 seconds and then dry the cured film...

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Abstract

The invention discloses a preparation method of a photocuring base for synthetic leather.The preparation method of the photocuring base for synthetic leather includes the steps that 1 part of a mixed photoinitiator of 2-hydroxyl-4-(2-hydroxyethoxy)-2-methylphenylacetone and 2-hydroxyl-2-methyl-1-phenyl-1-acetone and 1.5 parts of a mixed nonionic emulsifier of span-80 and tween-80 are added into 100 parts of urethane acrylate photocurable resin, 20-60 parts of a saturated brine solution is added under the ultrasonic and high-speed stirring condition, stable water-in-oil emulsion is formed, non-woven fabric finished in advance is coated with the stable water-in-oil emulsion, curing and film forming are carried out under an ultraviolet lamp, then a formed film is dried in a drying oven, foaming is carried out, and the photocuring porous membrane base for synthetic leather is obtained.

Description

technical field [0001] The invention relates to a light-cured base for synthetic leather, which belongs to the field of leather and plastic products. technical background [0002] Synthetic leather is a kind of polyurethane soft product. The traditional production method of wet-process polyurethane synthetic leather is to add DMF solvent and other fillers and additives to polyurethane wet-process resin to make a mixed solution. After degassing by vacuum machine, dipping or coating Cover it on the base cloth, and then put it into water that has affinity with the solvent (DMF) but not with the polyurethane resin. The solvent (DMF) is replaced by water, and the polyurethane resin gradually solidifies to form a porous film, that is, micro Porous polyurethane grain layer. In this method, a large amount of hydrophilic solvents are dissolved in water, thus causing serious water pollution in the production of synthetic leather. Light-curing technology is a low-energy, environmenta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0047D06N3/0061D06N3/0077D06N3/14D06N2209/06D06N2209/16D06N2211/28
Inventor 陈新吴彦勋赵莉莉陈健吴锦京杨明华
Owner LISHUI UNIV
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