Hydrophilic polyurethane foamed plastic and foaming technique

Abstract

The invention relates to the technical field of high polymer materials, and in particular relates to a hydrophilic polyurethane foamed plastic and a foaming technique. The hydrophilic polyurethane foamed plastic comprises components A and B according to the proportion of (1.5:1)-(3:1), the component A consists of ingredients in parts by weight: 1-5 parts of sodium carboxymethyl cellulose, 0.5-2 parts of surfactant and 90-95 parts of water, and the component B comprises the polyurethane prepolymer. The hydrophilic polyurethane foamed plastic is good in hydrophilicity, and obvious in water sucking and retaining effects, and has wide application prospects in the fields of medical, female sanitary towels, baby diapers and the like; and the foaming technique is conducted under atmospheric pressure, is low in equipment requirement, little in energy consumption, low in technique cost, less in pollution emission in a production process, and beneficial to environment friendliness.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a hydrophilic polyurethane foam and a foaming process. Background technique [0002] Polyurethane foam is an emerging organic polymer material, known as the "fifth largest plastic", because of its excellent performance, it is widely used in light industry, chemical industry, electronics, textiles, medical care, automobiles, aerospace and many other fields . Hydrophilic polyurethane foam is added with water-absorbing components such as coagulant, so that it has high water absorption and good water-locking effect. and other fields have achieved rapid development. [0003] The foaming process of the existing hydrophilic polyurethane foam needs to be carried out under vacuum conditions, which requires high equipment requirements, high energy consumption, and high process costs; the required raw materials include organic solvents, which are not only poor in environmental p...

AI Technical Summary

Problems solved by technology

[0003] The foaming process of the existing hydrophilic polyurethane foam needs to be carried out under vacuum conditions, which requires high equipment requirements, high energy consumption, and high process costs; the required raw materials include organic solvents, which are not only poor in environmental protection, but also easy to pollute the environment. And there are potential safety hazards, which are harmful to the health of consumers.