The invention discloses a
nitrogen halamine type antibacterial
polyurethane material as well as a preparation method and application thereof, and relates to the field of
polyurethane compositions. The method comprises the following steps: firstly, synthesizing a
nitrogen halamine precursor by taking
guanidine salt and 2-acetylbutyrolactone as main raw materials; further, then using the
polyol and
isophorone diisocyanate, as main raw materials, to prepare a
prepolymer; then introducing a prepared
nitrogen halamine precursor which serves as a chain
extender at the same time, preparing the nitrogen halamine type
polyurethane emulsion, enabling the
emulsion to form a film, and carrying out chlorination on the prepared film through a
sodium hypochlorite solution or a domestic bleaching agent, so as to obtain the polyurethane material with antibacterial performance. The synthetic process is simple, the antibacterial performance can be enhanced through repeated chlorination in practical application, and practical production and use are facilitated; wherein the
adhesive film is high in strength and excellent in
adhesive force; and the chlorinated
coating film has good and lasting antibacterial performance, and has great application prospects in the fields of antibacterial
textile fabrics, toy coatings and medical appliances.