Formula and technology of waterborne polyurethane foaming velvet and silk sense synthetic leather

A water-based polyurethane and synthetic leather technology, applied in textiles and papermaking, etc., can solve the problems of affecting the hand feel, environmental pollution at the product end, insufficient bass wear fastness, etc., and achieve the effect of good air permeability

Inactive Publication Date: 2016-08-10
宋婷婷
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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] At present, the production process of oily and water-based synthetic leather is generally post-processing after Bass film, mainly because the wear

Method used

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  • Formula and technology of waterborne polyurethane foaming velvet and silk sense synthetic leather
  • Formula and technology of waterborne polyurethane foaming velvet and silk sense synthetic leather
  • Formula and technology of waterborne polyurethane foaming velvet and silk sense synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Prepare the coating liquid according to the following ratio:

[0035]

[0036] 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.

[0037] 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.

[0038] 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 wa...

Embodiment 2

[0041] Prepare the coating liquid according to the following ratio:

[0042]

[0043]

[0044] 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.

[0045] 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.

[0046] 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 to ...

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PUM

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Abstract

The invention discloses a formula of water-based polyurethane foamed velvet-like silk-like synthetic leather, which comprises a coating liquid; the coating liquid comprises the following component ratios: 17%-92.5% of water-based polyurethane emulsion; 1%-15% of filler; Polyurethane fluff powder or polyurethane elastic powder 1%~25%; ammonium stearate emulsion 1%~10%; leveling agent 1%~5%; dispersant 0.5%~3%; ammonia water 0.5%~2%; color paste 1% to 10%; thickener 1% to 5%; modifier 0.5% to 8%. Process: Add formula raw materials, stir and filter, adjust viscosity to obtain coating liquid; make coating foam into coating foam, and apply it to leather base cloth; dry to obtain foaming velvet feel and silk feel bass; post-processing and Surface treatment, polyurethane foam velvet feel silky synthetic leather. The wear-resistant and scratch-resistant properties of the invention far exceed the film fastness of traditional synthetic leather, and the air permeability is very good, and it also has certain solvent resistance and heat resistance, and has good environmental protection performance.

Description

【Technical field】 [0001] The invention relates to the technical field of finishing technology for synthetic leather, in particular to the technical field of the formulation and process of water-based polyurethane foamed velvet-feeling silk-feeling 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 the...

Claims

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Application Information

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IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0047D06N3/0059D06N3/0061D06N3/0063D06N3/0088D06N2211/28
Inventor 宋金火宋婷婷宋林涛
Owner 宋婷婷
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