▎ 摘　　要

NOVELTY - Lightweight heat-resistant fireproof material comprises 0.4-0.5 pts. wt. ammonium persulfate, 280-300 pts. wt. caprolactam, 3-4 pts. wt. dicumyl peroxide, 20-30 pts. wt. methylcellulose, 10-16 pts. wt. glucose, 30-40 pts. wt. graphene oxide, 1-4 pts. wt. ammonium polyphosphate, 15-20 pts. wt. sodium acrylate, 10-13 pts. wt. pentaerythritol, 10-15 pts. wt. phosphorus trichloride, 5-7 pts. wt. chlorinated paraffin and 0.01-0.02 pts. wt. catalyst. USE - Used as lightweight heat-resistant fireproof material. ADVANTAGE - The method: can form a uniform and stable carbon layer during combustion, thus providing heat insulation and fireproof performance; forms phosphate ester, which can achieve synergistic fireproof performance, thus improving the flame retardancy of the finished product; ensures stable dispersion of graphene in polycaprolactam, which improves the mechanical and flame resistance of the finished product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing a lightweight heat and fire resistant material comprising (a) mixing glucose and methyl cellulose, adding to deionized water (30-40 times), stirring uniformly, adding graphene oxide, ultrasonically processing for 1-2 hours, dehydrating at 200-250 degrees C, conveying to carbonization furnace, vacuum calcining at a vacuum degree of 8-10 Pa, heating to 1050-1200 degrees C at a rate of 70-90 degrees C/minute, baking for 10-12 hours, and naturally cooling to obtain carbonized modified graphene, (b) taking the above carbonized modified graphene, mixing with phosphorus trichloride, adding to deionized water (30-40 times the weight of the mixture), heating to 50-55 degrees C, stirring the mixture for 1-2 hours to obtain phosphorus graphene dispersion, (c) taking ammonium persulfate, adding to deionized water (10-18 times) and stirring uniformly, (d) taking sodium acrylate, adding to phosphorus graphene dispersion, stirring uniformly, conveying to a reaction kettle, passing nitrogen gas, adjusting the temperature of the reaction kettle to 60-75 degrees C, adding ammonium persulfate aqueous solution, stirring for 3 -5 hours, adding pentaerythritol, heating to 90-96 degrees C, adding a catalyst, stirring for 1-2 hours, discharging and cooling to obtain phosphorus ester doped graphene dispersion, (e) taking dicumyl peroxide, adding absolute ethanol (6-9 times), stirring uniformly to obtain an initiator solution, (f) taking caprolactam, adding to the phosphorus ester doped graphene dispersion, stirring uniformly, feeding into the reaction kettle, introducing nitrogen gas, adjusting the temperature of the kettle to 60-75 degrees C, adding the initiator solution, stirring for 3-5 hours, cooling the resultant, suction filtering, washing the filter cake with water, drying at room temperature, mixing with the remaining raw materials, stirring uniformly, conveying to an extruder, melt extruding and cooling.