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Wet method for preparing waterborne polyurethane space leather

A technology of water-based polyurethane and space leather, which is applied in chemical instruments and methods, textiles and papermaking, laminating devices, etc., to achieve improved scratch resistance and wear resistance, uniform and stable cells, excellent wear resistance and air permeability Effect

Active Publication Date: 2015-08-12
HEFEI KETIAN WATERBORNE TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the research on the preparation of water-based polyurethane synthetic leather has made great progress, but the research on high-performance space leather is still in the traditional manufacturing process, especially to achieve moisture permeability, genuine leather feel, wear resistance, and high peeling performance And ecological environmental protection still needs further research and development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1. A kind of method that wet method prepares waterborne polyurethane space leather:

[0028] 1) Ingredients

[0029] A preparation of impregnation solution: take 10 kg of water-based polyurethane resin KT735 (manufactured by Hefei Ketian Chemical) with a solid content of 42% and add it to 90 kg of tap water, and stir evenly at a high speed to obtain the impregnation solution.

[0030] B preparation of coagulation solution: take 8kg of phosphoric acid and 92kg of tap water and mix and stir, so that phosphoric acid is completely dissolved in water to obtain coagulation solution.

[0031] C preparation of foaming slurry: get 300kg of water-based polyurethane resin KT735 (prepared by Hefei Ketian Chemical Industry) with a solid content of 42%, add 2.8kg of powder wetting agent A168 (Clariant Chemical Industry), 30kg of lignocellulose successively (Yixing Shengdeli), 4.8kg of blowing agent K12 (Jinan Shuochang Chemical), 4.8kg of foam stabilizer 207 (Qingdao Zhongb...

Embodiment 2

[0040] Example 2. A kind of method that wet method prepares waterborne polyurethane space leather:

[0041] 1) Ingredients

[0042] A preparation of impregnation solution: take 12 kg of water-based polyurethane resin KT735 (manufactured by Hefei Ketian Chemical Industry Co., Ltd.) with a solid content of 42%, add it to 88 kg of tap water, and stir at a high speed to obtain the impregnation solution.

[0043] B preparation of coagulation solution: Take 10kg of calcium chloride and 90kg of tap water and mix and stir, so that the calcium chloride is completely dissolved in water to obtain the coagulation solution.

[0044] C prepares foam slurry: getting solid content is 42% aqueous polyurethane resin KT735 (prepared by Hefei Ketian chemical industry) 290kg, adds successively the powder wetting agent 5040 (Shenzhen Haichuan chemical industry) of 3kg, the lignocellulose of 32kg ( Yixing Shengdeli), 6kg foaming agent zinc stearate (Henan Huier Nano), 5kg foam stabilizer 207 (Qing...

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Abstract

The invention discloses a wet method for preparing a waterborne polyurethane space leather. The method uses anionic waterborne polyurethane emulsion immersion liquid and a demulsification crosslinking agent solution to treat a base cloth; the base cloth is coated with a waterborne polyurethane foam slurry, and subjected to condensation, washing, drying and dry transfer veneer to obtain the waterborne polyurethane space leather. The wear additives, wax powder and breathable additives added in the waterborne topping slurry system improve the scratch abrasion resistance of space leather, and endow the space leather with smooth surface, good handle, and excellent air and moisture permeability. The waterborne polyurethane space leather obtained by the method has the advantages of safety, environmental protection, good cut, fine compact structure, no crack or wear, and flexible handle.

Description

technical field [0001] The invention belongs to the technical field of water-based polyurethane synthetic leather, in particular to a method for preparing water-based polyurethane space leather by a wet method. Background technique [0002] At present, synthetic leather has been used in various fields in people's lives, and there are various varieties. Space leather is a synthetic leather product developed in recent years. It is made of solvent-based polyurethane, and the DMF (dimethylformamide) in the solvent-based polyurethane is replaced with water by a wet process, so that the coating has continuous pores. So as to achieve moisture permeability and air permeability. It has the advantages of light weight, wear resistance, heat resistance, toughness, good cold resistance, high tensile strength, and high air and moisture permeability. For example, Chinese patent ZL201010214265.3 proposes a manufacturing method of acid-resistant, alkali-resistant, hydrolysis-resistant and ...

Claims

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Application Information

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IPC IPC(8): D06N3/14B32B37/02B32B37/26B32B38/16B32B38/18
Inventor 王刚赵曦李维虎魏玲赵春娥汪飞戴家兵
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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