Cationoid polyurethane and modified silicon oil composite water dispersion, preparation and applications

The invention relates to a cationic polyurethane and modified silicone oil composite nano aqueous dispersion and a preparation method and an application thereof. The dispersion particles of the dispersion are compounded with cationic polyurethane and modified silicone oil, the diameters of the dispersion particles are less than 100nm. The mass composition of the modified silicone oil in the dispersion particles is 10 to 50 percent. High molecular weight polyether glycol and cationic diol chain extender react with isophorone diisocyanate(IPDI) to form ionic polyurethane after end capping and neutralization. The ionic polyurethane and the modified silicone oil are compounded and added with water to conduct self-emulsification at the room temperature to form the polyurethane and modified silicone oil composite nano aqueous dispersion. The nano aqueous dispersion can be used as a multifunction finishing material cotton cloth and can effectively improve the crease resistant, draping property and strength conservat