▎ 摘　　要

NOVELTY - Preparation method of water-treating tub-type filter membrane wire involves weighing 122-128 pts. wt. polyvinylidene fluoride, 84-88 pts. wt. poly vinyl acetate, 36-40 pts. wt. silver-carried active carbon, 12-16 pts. wt. graphene, 6-10 pts. wt. cellulose acetate, 3-9 pts. wt. instant sodium silicate, 2-4 pts. wt. mesoporous molecular sieve, 3-5 pts. wt. calcium stearate, 1-5 pts. wt. nano titanium dioxide powder, 2-4 pts. wt. nano silicon carbide powder, 2-4 pts. wt. glass fiber, 1-3 pts. wt. nano zinc oxide powder and 7-9 pts. wt. wear-resisting carbon black; mixing and oven drying all raw materials at 40 degrees C for 30 minutes, adding dried raw materials into ball mill, and sieving into 200 meshes sieve to obtain mixture; and processing film wire into clamp state at 110 degrees C for 30 minutes, heat setting, placing film wire into water for 20 hours and into protection solution for 2 hours, and drying at room temperature to obtain water-processing tubular filter membrane wire. USE - Method for preparing water-treating tub-type filter membrane wire. ADVANTAGE - The method has strong absorbing ability in water purification treatment and can sterilize water. DETAILED DESCRIPTION - Preparation method of water-treating tub-type filter membrane wire comprises: (1) weighing 122-128 pts. wt. polyvinylidene fluoride, 84-88 pts. wt. poly vinyl acetate, 36-40 pts. wt. silver-carried active carbon, 12-16 pts. wt. graphene, 6-10 pts. wt. cellulose acetate, 3-9 pts. wt. instant sodium silicate, 2-4 pts. wt. mesoporous molecular sieve, 3-5 pts. wt. calcium stearate, 1-5 pts. wt. nano titanium dioxide powder, 2-4 pts. wt. nano silicon carbide powder, 2-4 pts. wt. glass fiber, 1-3 pts. wt. nano zinc oxide powder and 7-9 pts. wt. wear-resisting carbon black; (2) mixing and oven drying all raw materials at 40 degrees C for 30 minutes, adding dried raw materials into ball mill, and sieving into 200 meshes sieve to obtain mixture; (3) adding obtained mixture into stirring kettle, heating at 225 degrees C to form casting solution, settling, defoaming and casting for 12 hours, granulating and pelleting through twin-screw extruder to obtain filter film grain; (4) setting extruding film wire temperature at 120 degrees C for 60 minutes to obtain heat treated film, heating heat treated film at 100 degrees C, stretching for 1.8 times, placingg filter membrane particles into extruder with stripping slot, heating at 120 degrees C, stretching for 1.2 times and forming film hole; and (5) processing film wire into clamp state at 110 degrees C for 30 minutes, heat setting, placing film wire into water for 20 hours and into protection solution for 2 hours, and drying at room temperature to obtain water-processing tubular filter membrane wire.