Polyurethane memory foam with superior anti-yellowing performance

Abstract

The invention discloses polyurethane memory foam with superior anti-yellowing performance, and belongs to the field of polyurethane foam. The polyurethane memory foam is prepared from the following raw materials in parts by weight through reactive foaming: 10-90 parts of normal polyether glycol, 90-10 parts of slow recovery polyether glycol, 30-80 parts of isophorone diisocyanate, 1-5 parts of water, 1-3 parts of silicone oil, 0.4-2 parts of catalyst, 0.3-2 parts of stabilizer, 0.5-15 parts of physical foaming agent and 0.4-2 parts of crosslinking agent. The preparation method comprises the following steps of: adding corresponding parts by weight of polyether glycol (including normal polyether glycol and slow recovery polyether glycol) and isophorone diisocyanate into a mixer to stir uniformly; heating to 30-70 DEG C; adding corresponding parts of other raw materials into the mixer; and stirring at a high speed for 3-10 seconds and then pouring in a mould to foam and cure to obtain the corresponding polyurethane memory foam. Since the isophorone diisocyanate not containing benzene ring is adopted as a raw material, the produced polyurethane memory foam has superior anti-yellowing performance such as antioxidation, irradiation resistance, aging resistance and the like.

Description

[0001] technical field [0002] The invention relates to the technical field of polyurethane sponge, in particular to a polyurethane memory sponge with excellent anti-yellowing performance prepared by reaction foaming of polyether polyol and isophorone diisocyanate as main raw materials. Background technique [0003] Memory foam is composed of slow-rebound polyurethane sponge, elastic polyurethane cotton with countless open pores, which can reduce the pressure on the body's stress point in a relaxed state, and is used in home life and medical fields, such as high-end pillows, beds Pads and special medical facilities. It is also widely used in the aerospace industry to reduce the huge damage that the aircraft may cause to the human body due to gravity during take-off and landing, and to provide more comfortable and safe cushions for pilots who fly for a long time. [0004] At present, there are many sponge manufacturers in my country that can produce polyurethane memory foam,...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the easy yellowing of polyurethane memory foam in the prior art (mainly due to easy aging, easy oxidation and poor light resistance ) defects, to provide a polyurethane memory foam with excellent anti-yellowing properties, this polyurethane memory foam has good anti-yellowing properties such as anti-oxidation, anti-aging and anti-light, and can meet the requirements of social development on the anti-yellowing properties of polyurethane sponges To meet the demand, prolong the service life of the sponge, fill the gap of domestic products (polyurethane memory foam with excellent anti-yellowing performance), and achieve the goal of environmental protection and low carbon