▎ 摘　　要

NOVELTY - Preparing industrial filter cloth, involves (a) adding ethyl orthosilicate, anhydrous ethanol, deionized water and hydrochloric acid to a reactor, heating, rotary evaporating, and drying to obtain silica gel, (b) adding ricinoleic acid and ethylene glycol butyl ether to the reactor, adding water-carrying agent and catalyst, heating, cooling, filtering, washing with saturated sodium carbonate solution, vacuum distilling, mixing the intermediate and graphene, grinding to obtain a graphene composite, adding diatomaceous earth to a resistance furnace, heating, cooling to obtain calcined diatomaceous earth, grinding the diatomaceous earth and graphene composite, adding diisobutyldimethoxysilane, grinding, and cooling to obtain diatomaceous earth-loaded graphene, (c) adding polyethylene resin, silica gel and diatomaceous earth-loaded graphene to an extruder, and adding to a twin-screw micro mixing extruder to obtain a fiber monofilaments, and (d) twisting the monofilament, and weaving. USE - The method is useful for preparing industrial filter cloth. ADVANTAGE - The prepared cloth has excellent wear resistance, and reduces the friction coefficient of the surface. DETAILED DESCRIPTION - Preparing industrial filter cloth, involves (a) adding ethyl orthosilicate, anhydrous ethanol, deionized water and hydrochloric acid to a reactor, heating at 52-55 degrees C, stirring for 1.5 hours, dripping ammonia and ethanol mixture until the system pH reaches 6.8, stirring for 10 minutes, rotary evaporating, and drying to obtain silica gel, (b) adding ricinoleic acid and ethylene glycol butyl ether to the reactor, stirring, adding water-carrying agent and catalyst, heating at 80-85 degrees C, stirring at 500 rpm for 1 hour, adjusting the temperature to 70-74 degrees C, reacting for 3 hours, cooling, filtering to separate the catalyst, washing with saturated sodium carbonate solution to neutral, vacuum distilling to obtain an intermediate, mixing the intermediate and graphene, grinding for 30 minutes to obtain a graphene composite, adding diatomaceous earth to a resistance furnace, heating at 550-600 degrees C, heat-preserving for 40 minutes, cooling to room temperature to obtain calcined diatomaceous earth, grinding the calcined diatomaceous earth and graphene composite under the protection of an inert atmosphere at 80-88 degrees C for 1 hour, adding diisobutyldimethoxysilane, grinding for 4-6 hours, and naturally cooling to room temperature to obtain diatomaceous earth-loaded graphene, (c) adding polyethylene resin, silica gel and diatomaceous earth-loaded graphene to an extruder for melt extrusion and granulation, and adding to a twin-screw micro mixing extruder for spinning to obtain a fiber monofilaments, and (d) piling the monofilament, twisting, and weaving into the filter cloth.