The invention discloses a nano silica-modified core-shell acetic acrylic
emulsion flame-retardation high-speed cigarette
nozzle connecting
adhesive and a preparation method thereof. The method employsa core-shell
emulsion polymerisation method, the
butyl acrylate monomer and iso-
octyl acrylate-modified acetic acrylic
emulsion adhesive are synthesized, the emulsion particles have a core-shell structure having a
hard core and a soft shell, persistent adhesivity of the
adhesive is guaranteed, film forming temperature is obviously reduced, and primary
viscosity is increased; iso-
octyl acrylate induced in a shell layer substitutes partial
butyl acrylate, the primary
viscosity is further increased, and the emulsion
viscosity is reduced; a
fire retardant and nano silica are introduced into the
polymerization process, compatibility with a
polymer is increased, dispersion is uniform, so that the acetic acrylic emulsion has better water proofness,
stain resistance, and
solvent resistance, the prepared core-shell acetic acrylic emulsion is used as the
nozzle connecting adhesive, through testing by a M5 cigarette maker, sealing degree of cigarette loading is high, bonding effect is good, andthe
flame-retardation self-extinguishing character is obvious.