▎ 摘　　要

NOVELTY - A plastic knife and fork comprises 15-60 pts. wt. phenolic epoxy resin, 8-15 pts. wt. maleic anhydride grafted ethylene-propylene diene, 1-4 pts. wt. graphene, 10-20 pts. wt. benzoin ethyl ether, 7-9 pts. wt. nano-montmorillonite, 1.2-1.4 pts. wt. cyclohexanone, 12-14 pts. wt. ramie fiber, 60-65 pts. wt. polylactic acid, 2-3 pts. wt. gelatin, 1-2 pts. wt. magnesium stearate, 13-15 pts. wt. isophorone, 1-1.5 pts. wt. 2,6-di-tert-butyl-4-methylphenol, 4-6 pts. wt. sodium diphosphate, 1-2 pts. wt. sodium lauryl sulfate and 4-6 pts. wt. polyimide fiber. USE - The plastic knife and fork is useful for manufacturing food tableware. ADVANTAGE - The plastic knife and fork is completely degradable, disposable and environmentally-friendly, and can be prepared with high yield, strength and durability in a safe manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of plastic knife and fork, which involves: (1) mixing polylactic acid with nano-montmorillonite, drying at 130 degrees C for 120 minutes, cooling to room temperature, subjecting the mixed powder to ultrasonic oscillating for 30-40 minutes, controlling the water bath temperature at 30 degrees C, where the ultrasonic power is 100 W, then transferring the mixed powder to stirring tank, adding cyclohexanone, controlling the temperature at 75 degrees C, stirring at 1500 rpm for 15 minutes, and drying at 120 degrees C for 60 minutes to obtain surface-hydrophobic treated mixed powder; (2) drying ramie fiber, grinding to 80-100 mesh powder, then crushing into nano-powder, mixing nano-powder with gelatin and magnesium stearate together, then introducing into kneading machine, controlling the temperature at 120 degrees C, kneading for 15 minutes, and cooling to obtain ramie fiber reinforced material; (3) mixing surface-hydrophobic treated mixed powder obtained in step (1) with 2,6-di-tert-butyl-4-methylphenol, dispersing by colloid mill for 60-90 minutes, then adding ramie fiber reinforced material obtained in step (2), and controlling the temperature at 170-180 degrees C to obtain starch masterbatch having diameter of 6 mm; and (4) evenly mixing starch masterbatch obtained in step (3), phenolic epoxy resin, isophorone and remaining ingredients at room temperature, and carrying out hot-melt extrusion on mixed mixture at a temperature of 170-180 degrees C.