▎ 摘　　要

NOVELTY - Graphene quantum dot modified polymer masterbatch comprises 60-90 pts. wt. polymer matrix, 5-30 pts. wt. graphene quantum dots, 1-20 pts. wt. second functional filler, 0.06-5 pts. wt. surface treatment agent, 1-20 pts. wt. filler coating agent and 0.5-20 pts. wt. processing additive. USE - The masterbatch is used for functional fiber. ADVANTAGE - The masterbatch has far-infrared emission, high-efficiency antibacterial and mite removal, excellent antistatic, high resilience, mildew resistance and odor removal functions. The masterbatch prepare fiber materials with high transparency, long-term heat preservation, broad-spectrum antibacterial, and high resilience, which expands the application range of graphene in the field of functional fibers. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the masterbatch, involving (i) adding graphite to acidic aqueous solution, uniformly stirring, dripping the oxidant, and placing it into the microwave reactor to react to obtain dispersion liquid mainly composed of graphene quantum dots, (ii) after natural cooling, taking out the graphene quantum dot dispersion prepared in the step (i), filtering the unreacted large particles to obtain filtrate containing only graphene quantum dots, where the size of the filter membrane used is 25100 nm, transferring the filtrate to a dialysis bag and dialyzing at 60-150 degrees C for drying to obtain powdered graphene quantum dots, and (iii) melt blending the polymer matrix, graphene quantum dots, second functional filler, surface treatment agent, filler coating agent and processing additive at 120-300 degrees C under high shear strength, where he ratio of the output energy of the blending process to the mass of all the mixtures is 0.15 kWh/kg, cooling and pelletizing or directly pelletizing to obtain the product.