A refractory porous material and a method for producing the same

Abstract

The application relates to the field of ceramic composite materials and discloses a refractory porous material and a preparation method thereof. The preparation method comprises the following steps: ion exchange reaction of modified piperazine and aminotrimethylene phosphoric acid to obtain a charring agent; mixed reaction of modified ammonium polyphosphate, 3,5-di-tert-butyl-4-hydroxybenzene propionyl chloride and triethylamine to obtain a flame retardant; melt blending of the charring agent and the flame retardant to obtain a composite flame retardant; mixing and melt extrusion of polypropylene, the composite flame retardant, a propylene-based elastomer and maleic anhydride grafted polypropylene to obtain a modified polypropylene composite material; foaming of the modified polypropylene composite material by using a supercritical mold pressing foaming technology to obtain an outer layer material; preparation of an inner layer material by using a foaming-injection setting forming method with silicon powder and carbon microspheres as raw materials and triethanolamine lauryl sulfate as a foaming agent; and compounding of the inner layer material, a flame-retardant polyurethane adhesive and the outer layer material to obtain the refractory porous material.

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