| abstract |
The invention provides an aqueous polyurethane emulsion, a preparation method and application thereof. The aqueous polyurethane emulsion comprises macromolecular polyol, polyisocyanate, hydrophilic chain extender, crosslinking agent, nanoparticle, catalyst, neutralizer, The chain extender is reacted to obtain, wherein, the macromolecular polyol comprises polyoxypropylene diol and polycaprolactone triol, and the mass ratio of the macromolecular polyol and the polyisocyanate is (75～85):(10～ 20), the garment leather fabric bass prepared by the water-based polyurethane emulsion has strong moisture resistance, folding resistance and recoverability, excellent peel strength and hand feeling comfort, and is especially suitable for application in the field of garment leather. |