Preparation method of environment-friendly compound water-based polyurethane antibacterial coating with Chinese ilex leaves

The invention discloses a preparation method of an environment-friendly compound water-based polyurethane antibacterial coating with Chinese ilex leaves. The environment-friendly compound water-basedpolyurethane antibacterial coating is prepared from micron-sized Chinese ilex leaf powder, oligomeric dihydric alcohol, diisocyanate, micromolecular hydrophilic chain expander, micromolecular dihydricalcohol chain expanding agent, cross-linking agent, neutralizing agent, rear chain expanding agent, catalyst and deionized water. The environment-friendly compound water-based polyurethane antibacterial coating has excellent antibacterial property and heat resistance, good emulsion stability, tensile strength and hydrolysis resistance. In the preparation process, the micron-sized Chinese ilex leaf powder and poly(propylene carbonate)polyols synthesized by adopting carbon dioxide as a raw material are used, so that good biodegradability and antibacterial property are endowed, and the dependency on petrochemical materia