▎ 摘　　要

NOVELTY - Preparation of graphene oxide modified non-asbestos fiber reinforced calcium silicate board involves adding 50-98 parts mass concentrated sulfuric acid, 5 parts mass graphite powder, 5 parts mass sodium nitrate to reactor in turn, stirring, controlling system temperature to 10 degrees C or less, adding 18 parts mass potassium permanganate to reaction in batches, adding within 1.5 hours, adding 600 parts mass deionized water within 10 minutes, adding hydrogen peroxide with mass fraction of 30% until no bubbles are generated, performing vacuum filter, mixing 10-15 parts mass reinforcing fiber, 40-60 parts mass quartz powder, 10-25 parts mass cement, 15-20 parts mass slaked lime powder, 0.2-0.4 parts mass graphene oxide, 1-2 parts mass water glass , obtaining slab through flow plate making mechanism, drying semi-finished board through dryer until moisture content in board 5-8%, subjecting surface treatment process of sanding, edging, and chamfering to obtain finished calcium silicate board. USE - Preparation of graphene oxide modified non-asbestos fiber reinforced calcium silicate board. ADVANTAGE - The prepared graphene oxide modified non-asbestos fiber reinforced calcium silicate board has low water absorption, high strength and is lightweight. DETAILED DESCRIPTION - Preparation of graphene oxide modified non-asbestos fiber reinforced calcium silicate board involves adding 50-98 parts mass concentrated sulfuric acid, 5 parts mass graphite powder, 5 parts mass sodium nitrate to reactor in turn, stirring, controlling system temperature to 10 degrees C or less, adding 18 parts mass potassium permanganate to reaction in batches, adding within 1.5 hours, heating to 35 degrees C for 9 hours, heating to 80 degrees C for 1 hours, adding 600 parts mass deionized water within 10 minutes, adding hydrogen peroxide with mass fraction of 30% until no bubbles are generated, performing vacuum filter, washing to pH value 7, dispersing ultrasonic wave for 2 hours to obtain graphene oxide solution, controlling mass fraction to 0.65%, mixing 10-15 parts mass reinforcing fiber, 40-60 parts mass quartz powder, 10-25 parts mass cement, 15-20 parts mass slaked lime powder, 0.2-0.4 parts mass graphene oxide, 1-2 parts mass water glass , performing slab slurry undergoes natural dehydration, vacuum suction, filtering water, obtaining slab through flow plate making mechanism, producing graphene oxide reinforced and toughened fly ash to calcium silicate finished board steamed at 183 degrees C for 16-20 hours to make semi-finished plates, drying semi-finished board through dryer until moisture content in board 5-8%, subjecting surface treatment process of sanding, edging, and chamfering to obtain finished calcium silicate board.