Method for preparing polyether type polyurethane sponge having flame retardation and antibiosis functions

Abstract

The invention belongs to the technical field of polyurethane sponges, and discloses a method for preparing polyether type polyurethane sponge having flame retardation and antibiosis functions. The method includes the following steps: preparing of a composite foaming agent, preparing of materials, material mixing, material feeding and foaming, wherein the composite foaming agent composed of surfacecoated sodium bicarbonate, surface coated ammonium carbonate and azoformamide is adopted, the surface coated sodium bicarbonate is prepared through coating the surface of sodium bicarbonate with an organosilicon quaternary ammonium salt antibacterial agent, and the surface coated ammonium carbonate is prepared through coating the surface ammonium carbonate with potassium perfluorobutanesulfonatee. The polyether type polyurethane sponge prepared in the invention has the advantages of slow resilience, moderate softness and very good flame retardation effect; and special antibacterial treatmentof pores in the polyether type polyurethane sponge solves the problem of easiness in breeding / enriching of bacteria and other harmful microorganisms in the pores of the sponge.

Description

technical field [0001] The invention relates to the technical field of polyurethane sponges, in particular to a method for preparing polyether polyurethane sponges with flame-retardant and antibacterial functions. Background technique [0002] Sponge generally refers to all foaming materials, and foamed products of resin, rubber, and plastic are called sponges. Polyurethane sponge is foamed polyurethane material. Polyurethane not only has the elasticity of rubber, but also has the strength of plastic and excellent processing performance, and can be used to prepare polyurethane slow rebound foam (soft polyurethane foam). [0003] Flexible polyurethane foam can be divided into polyester type soft foam and polyether type soft foam according to the polyol raw material used. Polyether polyurethane is an open cell structure with the characteristics of temperature-sensitive decompression, and can also be called a temperature-sensitive decompression material. [0004] As a polyme...

AI Technical Summary

Problems solved by technology

[0004] As a polymer organic foam material, the flammability of polyether polyurethane sponge has become an important issue that threatens its safety. Therefore, some flame retardant modifications have been made to polyether polyurethane sponge in the existing market; such as China Patent publication number CN102643404A, the patent publication date is August 22, 2012. The patent named a slow rebound polyether polyurethane sponge discloses a flame retardant modification for the flammability of polyether polyurethane sponge. , adding a sulfonate flame retardant to the formula of polyether polyurethane sponge for flame retardant modification, although its flame retardant effect has been improved to a certain extent, but due to the single effect of the added flame retardant, its flame retardant The effect is still difficult to meet the public's requirements for the flame retardant effect of polyether polyurethane sponge