▎ 摘　　要

NOVELTY - Preparing plastic reinforced graphene calcium silicate fiber composite material comprises (i) taking graphite powder, dissolving, mechanical stirring and ultrasonically processing, (ii) mixing silicon source material with the graphene oxide dispersion, wet grinding mixture and peeling, (iii) adding containing liquid into reaction kettle, mixing silicon source material and oxidizing graphene of opening the high pressure kettle mechanical stirrer, rotating, heating, reacting, fast cooling, loading, centrifuging, washing, cleaning, washing, controlling and counting, and (iv) cleaning and drying. USE - The method is useful for preparing plastic reinforced graphene calcium silicate fiber composite material (claimed). ADVANTAGE - The method solves the technical problem that the graphene dispersed in the polymer, realizes the excellent reinforcing effect, improves the strength properties of the high molecular material, thermal property, electrical property and electromagnetic shielding property and excellent performance. DETAILED DESCRIPTION - Preparing plastic reinforced graphene calcium silicate fiber composite material comprises (i) taking graphite powder, carrying out conventional graphene preparation method to obtain water-soluble graphene oxide, dissolving the graphene oxide in the de-ionized water, where the mass ratio of graphene and water is 1:200-2000, mechanical stirring and ultrasonically processing for 30-90 minutes to obtain the graphene oxide dispersion, (ii) mixing the silicon source material with the graphene oxide dispersion obtained in the step (i), wet grinding the mixture to obtain a suspension or solution, where the process of the wet ball milling is as follows: the ratio of material to ball is 1:4-8, and the time is 1-2 hours, the purpose of wet grinding is further dispersing the graphene and peeling and forming a suspension or solution with the silicon source material, the silicon source is sodium silicate, potassium silicate, ammonium silicate and silicic acid. The concentration of silicon source in the silicon is controlled at 0.05-0.9 mol/l, (iii) adding containing liquid obtained in the step (ii) into reaction kettle, mixing silicon source material and oxidizing graphene of opening the high pressure kettle mechanical stirrer, rotating speed is 120-180 revolutions/minute, heating to 30-50 degrees C, adding calcium source, adding ammonium, raising the temperature to 120-240 degrees C, the pressure is controlled at 2-8MPa, stirring speed is 120-1200 revolutions/minute, reacting for 20-120 minutes, fast cooling, uniformly loading in the process of forming silicate fiber, graphene on calflo E fiber core surface to obtain graphene calcium silicate fiber composite material, centrifuging the kettle product, taking the precipitate, washing with de-ionized water for 3-5 times, cleaning allaline for 1-3 times, completely washing the ion till in the mixed liquid, where the calcium source is calcium hydroxide and calcium chloride, controlling source of calcium concentration at 0.04-0.8 mol/l, counting with calcium, where the ammonium source is ammonia, an ammonium bicarbonate, urea, diethanolameine, trolamine and ammonium nitrate, and (iv) cleaning the product obtained in the step (iii) drying, drying till the water content is less than 0.1 wt.%.