▎ 摘　　要

NOVELTY - Thermally stable polypropylene-silicon carbide composite comprises carbon nanotube (CNT) and graphene nanoplatelets (GNP) as reinforcing agent. USE - The composite is useful for thermally stable, reinforced polymer composite (claimed) as construction material for electrical housing and panels, warehouse, industrial and household commodities, bodies of automotive vehicles, electronic equipment such as computer and television body, to provide protection against fire accidents. ADVANTAGE - The method adds tubular and platelet structured nano-carbon additives which result in highly porous up to 26% polypropylene-silicon carbide composite that restrain the flame propagation and shows high temperature tolerance even up to 450 degrees C. The composite has excellent mechanical properties including elastic modulus, micro-hardness and tensile strength, and thermal property, is suitable to provide protection against fire accidents, is porous and able to resist heat and to reduce smoke release rate, tolerates thermal damage, reduces the thermal conductivity, heat and smoke release rate and to increase the char formed. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing thermally stable, reinforced polymer composite involving (a) blending polypropylene, silicon carbide, carbon nanotubes and graphene nanoparticles in a roller ball mill in acetone suspension for 2-6 hours, (b) heating the blended powder at a temperature of 35-45 degrees C to obtain a dried powder, and (c) molding the dried powder into sheets at the temperature of 200-215 degrees C, and a pressure of 6-8 MPa to obtain the product; and (2) a thermally stable, reinforced polymer composite comprising polypropylene, silicon carbide, carbon nanotube and graphene nanoplatelets as obtained by the method.