Preparation method of antibacterial modification type soft polyurethane foam

Abstract

Disclosed is a preparation method of antibacterial modification type soft polyurethane foam. The antibacterial modification type soft polyurethane foam is prepared from, by weight, 25-40% of polyisocyanate, 50-70% of polyether polyol, 0.01-5% of antibacterial agent and 2-10% of other auxiliaries including a catalyst, a foaming agent, a surfactant or a cross-linking agent according to a prepolymer method, a semi-prepolymer method or a one-step method. The preparation method of the antibacterial modification type soft polyurethane foam has the advantages that antibacterial modification and polyurethane synthesis are completed by one step, antibacterial modification is conducted in a chemical bonding mode, and accordingly the prepared antibacterial modification type soft polyurethane foam is long-acting in antibacterial property, quick to sterilize, wide in antibacterial range and high in storage stability.

Description

technical field [0001] The invention relates to a polyurethane material, in particular to a preparation method of an antibacterial modified polyurethane flexible foam. Background technique [0002] Polyurethane material is a kind of multi-purpose synthetic resin with various product forms. It has rich varieties of raw materials, many formula combinations, and a wide range of product forms and application fields. The main product forms include soft and rigid foam plastics, elastomers, coatings, adhesives Agents, synthetic leather, waterproof materials and paving materials, etc. [0003] Among polyurethane products, the product form with the largest output and usage is polyurethane flexible foam, which is a porous polyurethane material composed of a large number of microscopic pores and polyurethane resin pore walls. Low density, good elastic recovery, sound absorption, breathability, heat preservation and other properties, widely used in furniture cushions, vehicle seat cush...

AI Technical Summary

Problems solved by technology

[0010] However, the above inventions have not verified that the modification methods are simple physical blending, which will cause problems such as easy leakage of antibacterial agents and biological toxicity of materials, and it is difficult to solve the problem of persistence of antibacterial effects.

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