Preparation method of waterborne polyurethane synthetic leather Bayse and applications thereof

Abstract

The invention discloses a preparation method of waterborne polyurethane synthetic leather Bayse and applications of the waterborne polyurethane synthetic leather Bayse, belonging to the technical fields of the synthetic leather and the preparation method. The preparation method comprises the following steps: (1) preparing a bottom cloth; (2) impregnating the bottom cloth, wherein, the impregnation prescription contains the following components in parts by weight: 100 parts of water and 1-10 parts of metal nitrade, and the liquid rate of the impregnated bottom cloth is 10-30%; (3) heating, ironing, pressing, polishing and baking the bottom cloth after impregnating; (4) coating a waterborne polyurethane foaming layer on the bottom cloth after baking; (5) obtaining the synthetic leather Bayse after common baking, pressing and polishing. According to the preparation method, the defects of fussy operation, heavy pollution and drying difficulty in the existing preparation process of the waterborne polyurethane synthetic leather Bayse are overcome; one-time impregnation prescription and process, which are free of pollution, low in liquid rate after impregnation, and easy to bake are provided; meanwhile, a synthetic leather product taking the waterborne polyurethane synthetic leather Bayse as a base cloth is also provided; the preparation method is high in efficiency, and the obtained product is good in performance.

Description

technical field [0001] The invention relates to a method for preparing a water-based polyurethane synthetic leather base, and belongs to the technical field of synthetic leather and its preparation method. Background technique [0002] With the improvement of the breadth and depth of the application of artificial leather, the demand for artificial leather in the world has grown at an average annual rate of 7%. In addition, in recent years, the center of the world's artificial leather industry has moved to China, which has prompted my country's artificial leather industry to increase its annual average production rate by more than 10%. However, the pollution of artificial leather has also received attention from all walks of life, and the development of artificial leather industry in the direction of health and environmental protection is the general trend. How to develop and adopt various new materials and processes, especially water-based materials and processes, to meet en...

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is to overcome the defects of cumbersome operation, large pollution and difficult drying in the preparation process of the existing water-based polyurethane synthetic leather, and provide a nitrate impregnating solution once impregnating formula and process, without pollution, Low liquid retention rate after impregnation, easy to dry

[0006] The second technical problem to be solved by the present invention is to overcome the defects that the existing water-based polyurethane dry-process veneer synthetic leather and its preparation method lead to product performance degradation and low production efficiency, and provide a synthetic leather based on the above-mentioned water-based polyurethane bass. Leather products, the preparation method is efficient, and the resulting product has good properties

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