The invention relates to a preparation method of
polyester yarn with a deodorization function, which comprises the following steps: putting a
solvent-free bi-component deodorization finishing agent into an
oil bath tank, and keeping the temperature at 40-50 DEG C to enable the
viscosity to be 200-400 mPa.s; a product is prepared by a
spinning process of melting a
polyester raw material, metering,
spinning, cooling, passing through an
oil bath tank, stretching, thermocuring and winding and forming. The
solvent-free bi-component deodorization finishing agent is obtained by uniformly mixing a component A and a component B at
room temperature, the component A is a deodorization modifier and bio-based macromolecular
polyol subjected to vacuum
dehydration, and the component B is a curing agent and a catalyst; the synthesis method of the deodorizing modifier comprises the following steps: mixing 90-95 parts by
mass of
epoxy modified
montmorillonite, 5-10 parts by
mass of
zinc diricinoleate and 200 parts by
mass of
ethanol, adjusting the pH value of the
system to 3-4, and reacting at 40-50 DEG C to obtain the deodorizing modifier. According to the invention, the
polyester yarn is endowed with an efficient and lasting deodorization function.