The invention discloses a branched-structure
polyurethane-silicious polyacrylate
hot melt adhesive and a preparation method thereof. The branched-structure
polyurethane-silicious polyacrylate
hot melt adhesive mainly comprises the following components of branched-structure
polyurethane-silicious polyacrylate resin,
tackifier, fillers,
wax additive, light stabilizer and
antioxidant, wherein the branched-structure polyurethane-silicious polyacrylate resin is a
polymer specially synthesized for the invention. The preparation method of the branched-structure polyurethane-silicious polyacrylate
hot melt adhesive comprises the following steps of: heating and melting the
antioxidant, the light stabilizer, the
tackifier and the
wax additive according to weight ratio of the
hot melt adhesive, controlling temperature, adding the branched-structure polyurethane-silicious polyacrylate resin and the fillers in batches while stirring, discharging after melting and uniformly mixing adhesive solution, cooling,
slicing and forming to obtain the prepared
hot melt adhesive. According to the branched-structure polyurethane-silicious polyacrylate
hot melt adhesive and the preparation method thereof, the problems of poor
heat resistance and low strength of the traditional EVA (
ethylene-co-
vinyl acetate) hot melt adhesives,
high energy consumption for preparation, high
melt temperature and poor construction performance of
polyester hot melt adhesives, and poor
weather resistance, poor storage stability and higher cost of
moisture-curing polyurethane hot melt adhesive are solved.