The invention relates to a high-modulus low-shrinkage
creep-resistant activated
polyester industrial
yarn and a preparation method thereof. The preparation method comprises the preparation of a high-
viscosity creep-resistant
polyester chip and the preparation of the high-modulus low-shrinkage
creep-resistant activated
polyester industrial
yarn; polyester is subjected to
solid phase polycondensation for viscosifying and then is blended and reacted with a
fluorine-containing
epoxy compound to obtain the high-
viscosity creep-resistant polyester
chip; then the high-
viscosity creep-resistant polyester
chip is subjected to metering, extruding, cooling, oiling, stretching,
heat setting, oiling of an activating oiling agent, winding and pre-activating treatment to obtain the high-modulus low-shrinkage creep-resistant activated polyester industrial
yarn. The high-modulus low-shrinkage creep-resistant activated polyester industrial yarn has certain creep resistance,
hydrolysis resistance and performance stability, can be used in a high-temperature high-
humidity environment for a long time, and has great prospect in the fields of tires, mechanical rubber products,
plastic packaging, waterproof fabrics, ropes,
mooring ropes, marine fibers and the like.