▎ 摘　　要

NOVELTY - Manufacture of permanent electrostatic meltblown cloth involves mixing and extruding polypropylene powder, graphene powder and dispersant, air-drying, adding obtained raw material to a screw machine, heating, passing the raw material through the spinneret of the screw machine, stretching the melt, needle-punching obtained ultra-thin filament meltblown fiber, drawing the meltblown fiber, cooling, solidifying, conveying on a Teflon (RTM: polytetrafluoroethylene) mesh belt, obtaining a graphene polypropylene meltblown filter, providing a metal mesh screen (S1) on the mesh belt directly below the melt-blowing die, and a metal mesh screen (S2) at the winding end of the mesh belt, connecting the screen (S1) with an anode of low-voltage direct current power supply, and the screen (S2) with a cathode of low-voltage direct current power supply, sorting graphene factor by two-way anode and cathode, and generating permanent charge. USE - Manufacture of permanent electrostatic meltblown cloth. ADVANTAGE - The method enables manufacture of permanent electrostatic meltblown cloth with uniform distribution of graphene molecules. DETAILED DESCRIPTION - Manufacture of permanent electrostatic meltblown cloth involves adding 70-90 pts. wt. polypropylene powder, 10-30 pts. wt. graphene powder and 2-8 pts. wt. dispersant to a twin-screw machine at 220-260 degrees C, blending, co-extruding the raw materials with uniformly distributed graphene, air-drying at 250-280 degrees C for 0.5-1 hours to remove moisture in the meltblown cloth raw material, adding the uniformly blended meltblown cloth raw material to a screw machine, heating to 250-260 degrees C, measuring output by a spinning pump, passing the raw material through the spinneret of the screw machine, stretching the melt by the inclined downward high-pressure hot airflow at the melt-blowing die head, needle-punching obtained ultra-thin filament meltblown fiber to remove pores, drawing the meltblown fiber by the inclined downward cold airflow under the action of its own gravity, cooling, solidifying, conveying on a Teflon (RTM: polytetrafluoroethylene) mesh belt, obtaining a graphene polypropylene meltblown filter, providing a metal mesh screen (S1) on the mesh belt directly below the melt-blowing die, and a metal mesh screen (S2) at the winding end of the mesh belt, connecting the screen (S1) with an anode of the low-voltage direct current power supply, re-ordering the graphene factor in the drawn meltblown cloth by the anode, connecting the screen (S2) with a cathode of the low-voltage direct current power supply, re-ordering the graphene factor in the drawn meltblown cloth by the cathode, sorting graphene factor by the two-way anode and cathode, and generating permanent charge.