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Formula and technology for producing synthetic leather from graphene modified waterborne polyurethane

A water-based polyurethane and graphene modification technology, which is applied in polyurea/polyurethane coatings, coatings, textiles and papermaking, etc., can solve the problems of affecting the hand feel, insufficient wear fastness of the base, and no air permeability of the water-based foam base. , to achieve the effect of good air permeability, plump, smooth and soft hand feeling

Inactive Publication Date: 2016-09-07
宋婷婷 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production process of oily and water-based synthetic leather is generally post-treatment after Bass film, mainly because the wear fastness of Bass is not enough, and the wear fastness of the surface can only be increased by filming, but the synthetic leather will affect the feel after being filmed. , and the cost will also increase significantly. The water-based foam bass has no air permeability after being filmed, which is the biggest product defect

Method used

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  • Formula and technology for producing synthetic leather from graphene modified waterborne polyurethane
  • Formula and technology for producing synthetic leather from graphene modified waterborne polyurethane
  • Formula and technology for producing synthetic leather from graphene modified waterborne polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prepare the coating solution according to the following ratio:

[0033]

[0034] Add the raw materials except the thickener in the prescribed amount in sequence in 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.

[0035] The prepared coating solution is made into an 8-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.

[0036] 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 160°C, and the grap...

Embodiment 2

[0039] Prepare the coating solution according to the following ratio:

[0040]

[0041]

[0042] Add the raw materials except the thickener in the prescribed amount in sequence in the container, stir evenly with a disperser mixer, the stirring speed of the disperser mixer is 1500 rpm, after filtering, add the thickener to adjust the viscosity to obtain a coating liquid.

[0043] 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.

[0044] After the coating is completed, it is dried in an oven, multi-stage temperature control is implemented, and the temperature is raised in stages at a temperature of 50°C to 180°C t...

Embodiment 3

[0047] Prepare the coating solution according to the following ratio:

[0048]

[0049]

[0050] Add the raw materials except the thickener in the prescribed amount in the container in turn, stir evenly with a disperser mixer, the stirring speed of the disperser mixer is 1800 rpm, after filtering, add the thickener to adjust the viscosity to obtain a coating liquid.

[0051] 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.

[0052] After the coating is completed, it is dried in an oven, multi-stage temperature control is implemented, and the temperature is raised in stages at a temperature of 50 ° C to 200 ° C t...

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Abstract

The invention discloses a formula for producing synthetic leather from graphene modified waterborne polyurethane. The formula comprises a coating solution. The coating solution comprises 51-88.999% of waterborne polyurethane emulsion, 5-15% of filler, 3-10% of stearic acid ammonium emulsion, 0.5-3% of foaming agent, 0.001-1% of graphene, 0.5-10% of water-based color paste, 0.5-2% of ammonium hydroxide, 0.5-5% of flatting agent and 1-3% of thickener. The technology comprises the steps of adding raw materials in the formula, and conducting stirring, filtration and viscosity regulation to obtain the coating solution; making the coating solution into coating foams, and applying the coating foams onto a leather base cloth; conducting drying to obtain a foam base; conducting aftertreatment to obtain the graphene modified waterborne polyurethane synthetic leather. By producing the foaming synthetic leather from graphene modified waterborne polyurethane, the wear resistance of a membrane is improved greatly, the dry transfer coating procedure is omitted, and antistatic, flame retardant and waterproof effects are realized.

Description

【Technical field】 [0001] The invention relates to the technical field of synthetic leather and textile finishing technology, in particular to the technical field of a formula and process for producing synthetic leather by graphene-modified water-based polyurethane. 【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. my country's production enterprises basically use traditional solvent-based polyurethane resins to manufacture synthetic leather. Most of the solvents used as the dispersio...

Claims

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Application Information

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IPC IPC(8): D06N3/14D06N3/00C09D175/04C09D7/12
CPCD06N3/14C08K3/04C08K5/098C08K13/02C09D7/61C09D7/63C09D175/04D06N3/0063D06N3/0086D06N2203/068D06N2205/045D06N2209/046D06N2209/067D06N2209/123D06N2209/142
Inventor 宋婷婷宋金火宋林涛
Owner 宋婷婷
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