Hydrolysis-resistant polyurethane shoe sole and preparation method thereof

Abstract

The invention discloses a hydrolysis-resistant polyurethane shoe sole and a preparation method thereof, and relates to the technical field of a shoe sole material, wherein the polyurethane shoe sole is prepared from an ingredient A and an ingredient B; the ingredient A is prepared from the following ingredients in parts by weight: 40 to 60 parts of polyether polyol, 30 to 50 parts of polyester polyol, 1 to 2 parts of nonmetallic catalysts, 1 to 5 parts of chain extending agents, 1 to 2 parts of foam stabilizers and 1 to 2 parts of water; the ingredient B is prepared from the following ingredients in parts by weight: 20 to 40 parts of isocyanate and 10 to 30 parts of polyethylene glycol adipate. The polyether polyol is introduced into the polyurethane shoe sole; meanwhile, the nonmetallic catalysts are used; the introduction of metal ions is avoided; a metal chelating agent is added, so that metal ion impurities are removed; then, isothiazolinone is added for inhibiting or killing microorganisms capable of causing polyurethane shoe degradation; the crystallinity degree of polyurethane is improved by isocyanate with benzene rings, so that the moisture diffusion speed is slowed down;the five ingredients are matched; the synergistic interaction is realized; the hydrolysis-resistant performance of the polyurethane shoe sole is improved; the service life of the polyurethane shoe sole in humid environment is prolonged.

Description

technical field [0001] The invention relates to the technical field of shoe sole materials, more specifically, it relates to a hydrolysis-resistant polyurethane shoe sole and a preparation method thereof. Background technique [0002] As a new multifunctional polymer material, polyurethane is a high-tech, high-performance, high-value-added product. It has superior physical and mechanical properties, acid and alkali corrosion resistance, high load-bearing performance, and a wide range of hardness. It is widely used in the material industry. Occupying an important position, it has become one of the mainstream materials in the shoe sole market, and it is also widely used in labor insurance shoes. The biggest defect of polyester polyurethane is its poor hydrolysis resistance. When used in a humid environment, it is easy to degrade and shorten its service life, resulting in waste of materials and huge economic losses. [0003] In the Chinese invention patent whose publication nu...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the first object of the present invention is to provide a kind of hydrolysis-resistant polyurethane sole, by removing metal ions in the polyurethane sole, adding aromatic ring raw materials with good water resistance and preservatives, to solve the problem of polyurethane sole hydrolysis resistance. The problem of poor resistance, it has the advantage of good hydrolysis resistance

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