Bi-components for manufacturing polyurethane sole materials

Abstract

The invention relates to bi-components for manufacturing polyurethane sole materials, wherein the raw material formula of a polyol component comprises polyester polyol, micromolecular polyol as a chain extender, a catalyst, a foaming agent and a foam homogenizing agent, wherein the foaming agent comprises water and azobisisobutyronitrile; the polyester polyol comprises polyglycol diethylene glycol sebacate polyol and polyglycol diethylene glycol succinate polyol; the micromolecular polyol is glycol; the catalyst is triethylene diamine; and the foam homogenizing agent is dimethyl siloxane. In the polyol component, the azobisisobutyronitrile and water are used together as the foaming agent, and the special combination of the polyester polyol, the chain extender, the foam homogenizing agent, the catalyst and the like is adopted, thus the problem of surface crusting of the polyurethane sole materials can be better solved; the surface of a manufactured sole is smooth, and the edges of the sole have thicker crusts to prevent the currency of sagging; and moreover, the sole has good and uniform elasticity and is soft and comfortable.

Description

technical field [0001] The invention belongs to the field of polyurethane materials, in particular to a two-component polyurethane shoe sole material. Background technique [0002] In the sole manufacturing process, especially the midsole of the sole, PHYLON, EVA, and PU (ie polyurethane) are the most commonly used several substances, especially polyurethane, as a polymer material, its application on the sole has been With a history of more than 40 years, and because of its irreplaceable advantages of lightness, wear resistance, folding resistance, oil resistance, acid and alkali resistance, etc., it has currently occupied a quarter of the shoe sole market, and its share is still increasing. expand. [0003] In the prior art, the skin crust effect of the polyurethane sole material that can be produced is not good. On the one hand, the surface is not smooth enough, and the sole feels bad; After a period of time, the edge of the sole is easy to collapse, and the elastic effe...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the skin crust effect of the polyurethane sole material that can be produced is not good. On the one hand, the surface is not smooth enough, and the sole feels bad; After a period of time, the edge of the sole is easy to collapse. In addition, the elasticity of the sole material is not very good, and it is not uniform enough, resulting in the sole not being soft and comfortable.