The invention belongs to the technical field of
polymer composite materials, and relates to a preparation method of a cigarette tow containing a composite phase-change material. The preparation method comprises the following steps: uniformly mixing
polypropylene, whitening master batch,
vinyl acetate and a
copolymer thereof with the composite phase-change material according to a
mass ratio of (25-10): (1-3): (1-4): (3-8), and fully
drying to obtain a
composite material, wherein the crystalline
hydrate comprises but is not limited to
mirabilite,
alum, goslarite and
chalcanthite, the cooling particles are
polylactic acid particles, glyceryl tristearate,
glyceryl monostearate and
glyceryl distearate, the
composite phase change material is prepared by melting crystalline
hydrate and cooling particles at high temperature, stirring and mixing uniformly and then cooling, and
melt spinning is performed in a
spinning machine; and after stretching, carrying out immersion cleaning,
water washing,
curling and low-temperature and low-pressure
drying in an
alcohol solution. The preparation method is simple, and an existing
polypropylene tow
production line can be used for production. The prepared
composite phase change material-containing
fiber for the
cigarette filter tip has positive effects on
smoke cooling and adsorption of harmful substances in
smoke.