| abstract |
The invention discloses epoxide modified sulfonic waterborne polyurethane emulsion and its preparation method and application, sulfonic waterborne polyurethane emulsion includes following component by weight, 70 80 parts of polyalcohol, 10 15 parts of diisocyanate, 12 parts of small molecular alcohol chain extender, 0.01 0.05 parts of organo-bismuth class and/or organic tin catalyst, 5 15 parts of 2.5 3.5 parts of hydrophilic chain extender and epoxy resin, formula is simple, mixture stability is good, and improve the hydrolytic resistance of aqueous polyurethane viscose glue, it can be used for preparation 3D furniture to exempt to paint plastic uptake glue, it is low with temperature in use, adhesive strength is high, the advantages that resistance to elevated temperatures is good. |