Formula and process of antibacterial photocatalyst aqueous polyurethane synthetic leather

A water-based polyurethane and synthetic leather technology, applied in polyurea/polyurethane coatings, biocide-containing paints, antifouling/underwater coatings, etc., can solve the problems of low production efficiency, increased production cost, and high drying energy consumption. , to achieve the effect of improving service life, improving wear fastness, and feeling smooth and soft.

Inactive Publication Date: 2018-09-28
宋金火
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solvents cannot be completely recovered at present, not only causing environmental pollution on the product side, but also seriously endangering the health of employees during the production process
[0004] It has become a development trend for water-based synthetic leather to replace traditional oil-based synthetic leather. Now a large number of so-called water-based synthetic leathers have emerged on the market, but generally speaking, these water-based synthetic leathers are not really ecological water-based synthetic leathers that can replace oil-based synthetic leather. Many manufacturers use Products that have been subjected to water-based polyurethane dry-process veneer on oily basses are pretended to be water-based synthetic leather; some also use wet-process water coagulation process, which produces a large amount of industrial wastewater in the production process, and the direct formula causes serious pollution to the environment. High consumption, poor production controll

Method used

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  • Formula and process of antibacterial photocatalyst aqueous polyurethane synthetic leather
  • Formula and process of antibacterial photocatalyst aqueous polyurethane synthetic leather
  • Formula and process of antibacterial photocatalyst aqueous polyurethane synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare the coating solution according to the following ratio:

[0039]

[0040]

[0041] Add the raw materials in the formula amount except the thickener in turn into the container, stir evenly with a disperser mixer, the stirring speed of the disperser mixer is 1200 rpm, after filtering, add the thickener to adjust the viscosity to obtain a coating liquid.

[0042] The prepared coating solution is made into a 10-fold coating foam through an intelligent dynamic foam generator, and then the coating foam is applied to the leather base cloth. The coating method is knife coating, roller coating or roller coating. The application amount is precisely controlled by the computer, and the application thickness is adjusted according to the requirements of different leather products.

[0043] After the coating is completed, it is dried in an oven, multi-stage temperature control is implemented, and the temperature is raised in stages. The temperature is 50 ° C to 200 ° C, a...

Embodiment 2

[0046] Prepare the coating solution according to the following ratio:

[0047]

[0048] Add the raw materials except the thickener in the container in sequence, stir evenly with a dispersing mixer, the stirring speed of the dispersing mixer is 1500 rpm, after filtering, add the thickener to adjust the viscosity to obtain a coating liquid.

[0049] The prepared coating solution is made into a 15-fold coating foam through an intelligent dynamic foam generator, and then the coating foam is applied to the leather base cloth. The coating method is knife coating, roller coating or roller coating. The application amount is precisely controlled by the computer, and the application thickness is adjusted according to the requirements of different leather products.

[0050] After the coating is completed, it is dried in an oven, multi-stage temperature control is implemented, and the temperature is raised in stages. The temperature is 50 ° C to 200 ° C, and the antibacterial photocata...

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PUM

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Abstract

The invention discloses a formula of an antibacterial photocatalyst aqueous polyurethane synthetic leather. The antibacterial photocatalyst aqueous polyurethane synthetic leather comprises a coating liquid, which comprises 12.4-88.2799% of an aqueous polyurethane emulsion, 15-35% of a filler, 3-10% of an ammonium stearate emulsion, 0.5-1% of a foaming agent, 0.5-3% of nanometer titanium dioxide, 1-5% of nanometer silica, 0.0001-0.01% of graphene, 0.5-2.5% of a leveling agent, 1-3% of an anti-sticking agent, 0.5-1% of ammonia water, 0.02-8% of an aqueous pigment paste, and 0.5-1.5% of a thickener. The preparation process comprises: adding the raw materials of the formula, stirring, filtering, and adjusting the viscosity to obtain a coating liquid; preparing a coating foam body from the coating liquid, and coating a leather base cloth with the coating foam body; drying; and carrying out post-treatment and surface treatment to obtain the finished product. According to the present invention, with the preparation process, the obtained synthetic leather has advantages of self-cleaning property, ultraviolet resistance and antibacterial ability, and the fastness and the hand feeling of thesynthetic leather are not affected.

Description

【Technical field】 [0001] The invention relates to the technical field of water-based synthetic leather finishing technology, in particular to the technical field of the formulation and process of an antibacterial photocatalyst water-based polyurethane synthetic leather. 【Background technique】 [0002] As a major producer of artificial leather and synthetic leather, my country is facing increasing pressure while the output of enterprises and total industrial output value are growing steadily, especially for exporting to the European market. The European Chemicals Agency officially announced the eighth batch of candidate list of substances of very high concern, including N,N-dimethylformamide (DMF). The promulgation of this regulation has once again put forward a severe test for synthetic leather manufacturers. [0003] my country's production enterprises basically use traditional solvent-based polyurethane resins to manufacture synthetic leather. Most of the solvents used as...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/16C09D5/14C09D5/24C09D5/18D06N3/14D06N3/00
CPCC09D175/04C08K2003/2241C08K2201/011C08K2201/017C08L2201/02C08L2201/04C09D5/14C09D5/1618C09D5/1687C09D5/18C09D5/24D06N3/0043D06N3/0059D06N3/0088D06N3/142C08L63/00C08K13/02C08K3/04C08K5/098C08K3/22C08K3/36
Inventor 宋金火宋婷婷
Owner 宋金火
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