| abstract |
The invention discloses a moisture-curing polyurethane hot-melt adhesive and a preparation method thereof, which are composed of the following components in parts by weight: 20-30 parts of linear polyester polyol, 10-30 parts of phthalic anhydride polyester polyol , 15-25 parts of polyether polyol, 15-20 parts of tackifying resin, 0.4-0.6 part of antioxidant, 25-30 parts of isocyanate and 0.2-0.3 part of catalyst. The invention also discloses a preparation method of the above moisture-curing polyurethane hot-melt adhesive. The present invention can prepare the moisture-curing polyurethane hot-melt adhesive with longer operating time and higher initial solid strength. |