| abstract |
The invention relates to a reactive polyurethane hot-melt adhesive capable of realizing nylon adhesion and a preparation method thereof, comprising the following components in parts by weight: polyether polyol, 10-20 parts; crystalline polyester polyol, 20 parts by weight -30 parts; aromatic polyester polyol, 10-20 parts; polycaprolactone polyol 1-10 parts; acrylic resin 20-30 parts; isocyanate, added according to the number of isocyanate molar ratio NCO/OH=1.8-2.4; catalyst , 0.01-0.5 parts; silane coupling agent, 0.1-3 parts. The adhesive prepared by the invention is suitable for the bonding of intelligent electronic and electric appliance shell materials, has long open time, fast curing speed, high temperature and high humidity aging resistance, cold and thermal shock aging resistance, and has good adhesion to untreated nylon. , thereby improving the assembly efficiency of the nylon shell material. |