Method for manufacturing acid-proof, alkali-proof, hydrolysis-resistant and high-peel-strength polyurethane space leather

Abstract

The invention relates to acid-proof, alkali-proof, hydrolysis-resistant and high-peel-strength polyurethane space leather and a method for preparing the same. In the method, non-woven fabric of a composite proportion and high physical property is adopted; 35 percent high-shrinkage terylene is added; polyester type non-hydrolysis-resistant polyurethane is selected; a fluorine high polymer is introduced into the formula to improve the hydrolysis resistance and the acid-proof and alkali-proof capability of the product; and meanwhile carbodiimide serving as a resin modifier is introduced into theformula system to improve the hydrolysis resistance of the polyurethane space leather and meet the requirement of high peel strength, wherein the product can be easily and rapidly degraded by high temperature processing after being used and does not have adverse influence on the environment. The acid-proof, alkali-proof, hydrolysis-resistant and high-peel-strength polyurethane space leather produced by the invention has the advantages of superior physical and mechanical properties such as good cut, high peel strength, high tearing strength, high bursting strength, folding resistance, low temperature resistance, hydrolysis resistance, acid resistance, alkali resistance and the like; and meanwhile, the product has soft and tough handfeel and high elasticity.

Description

technical field [0001] The invention relates to an acid-resistant, alkali-resistant, hydrolysis-resistant and high-peeling polyurethane space leather and a manufacturing method thereof. Background technique [0002] Now synthetic leather is used in almost every field, but the durability of synthetic leather has not been well resolved, especially in the harsh environment, the strength, hydrolysis resistance, alkali and acid resistance of synthetic leather are relatively high. . At present, most domestic synthetic leathers use ordinary polyester polyurethane, which has average water resistance. Soaking in water or exposing to moisture will cause mechanical properties to decline. At present, many domestic synthetic leather companies use polyether type or even polycarbon type polyurethane to develop hydrolysis-resistant synthetic leather, which increases the service life of synthetic leather by 5-30 times, but there are some defects in this type of product: high cost, poor acid...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of polyurethane space leather, and its space leather has the characteristics of acid resistance, alkali resistance, hydrolysis resistance and high peeling, so as to solve the problem that the cost of synthetic leather produced in the prior art is too high, the acid resistance is poor, and the synthetic leather after use is not easy to quickly Degradation defects

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