A kind of wet process polyurethane resin and its preparation method and application

Abstract

The invention provides a wet-process polyurethane resin and a preparation method and application thereof. The wet-process polyurethane resin includes three components, A, B and C, and the preparation raw materials of the A component include the following components: polyethylene oxide di Alcohol, resorcinol bis(2-hydroxyethyl) ether, diphenylmethane-4,4'-diisocyanate and N,N-dimethylformamide; the preparation raw materials of the B component include the following groups Divided into: adipic acid-based polyester polyol, polycaprolactone diol, aromatic polyester polyol, small molecule chain extender, diphenylmethane-4,4'-diisocyanate and N,N-dimethylene Formamide; the C component is composed of cellulose acetate butyrate and SAN resin in a weight ratio of 1:2 to 1:1. The labor protection gloves made of the wet-process polyurethane resin of the present invention have the advantages of good mold release, good resilience and good wear resistance, as well as good air permeability and good wearing comfort.

Description

technical field [0001] The invention belongs to the field of polyurethane resin preparation, and relates to a wet-process polyurethane resin, a preparation method and application thereof, in particular to a wet-process polyurethane resin for labor protection gloves with good resilience and wear resistance, and a preparation method and application. Background technique [0002] At present, the commonly used labor protection gloves on the market mainly include PVC gloves, latex gloves, nitrile gloves, and PU (polyurethane) gloves. PU gloves are the lightest and thinnest of all dipped gloves. The PU dipped gloves on the market are mainly made of glove cores made of nylon, nylon or DYNEEMA as the base material and impregnated with polyurethane resin on the glove core. The rubber surface is relatively thin, but its wear resistance is outstanding. PU gloves have the advantages of anti-static, anti-corrosion, anti-skid and wear-resistant, good air permeability, light and sensitive...

AI Technical Summary

Problems solved by technology

The larger the cells, the better the release property of the glove, but the resilience, wear resistance and scratch resistance of the glove will be worse

[0004] CN106750159A discloses a preparation method of polyurethane resin for high wear-resistant labor protection gloves. The invention first reacts polyglycol with a part of diisocyanate to generate a prepolymer terminated by isocyanate group, so that the soft segment and hard segment of the polyurethane resin The segments are arranged in an orderly manner, so as to control the solidification speed and cell size of the resin, and then control the penetration degree of the resin to the glove core, so that the prepared polyurethane resin can achieve high wear resistance and at the same time, the glove will not be difficult to leave the mold. However, its resilience and Mold release still needs to be further improved

The wet-process polyurethane resin for labor protection gloves of the invention has good mold release and wear resistance, but its resilience needs to be further improved

[0006] CN105885664A discloses a method for preparing a high-resilience dipped labor protection glove coating. The preparation process of the invention is simple, and the prepared high-resilience dipped labor protection glove coating has excellent tensile resilience and low VOC content, and is wear-resistant , UV resistance, but its mold release needs to be further improved

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