▎ 摘　　要

NOVELTY - A polymer modified asphalt coating material comprises 40-50 parts mass asphalt, 5-20 parts mass softener, 0.1-5 parts mass graphene oxide, 5-20 parts mass polypropylene material, 2-15 parts mass styrene-butadiene-styrene polymer, 2-15 parts mass atactic polypropylene polymer, 1-15 parts mass styrene-butadiene rubber and 10-40 parts mass filler. USE - Polymer modified asphalt coating material. ADVANTAGE - The ultra-durable and heat-dissipating polymer modified asphalt coating material has excellent deformation resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of polymer modified asphalt coating material, which involves (A) taking above mentioned raw materials, (B) mixing asphalt, softener and graphene oxide and heating with stirring at 170-180 degrees C at 300-800 rpm for 30 minutes, (C) dispersing obtained material in colloid mill and transferring to reaction vessel, increasing temperature to 180-190 degrees C, adding polypropylene material, stirring at 300-500 rpm for 15 minutes, (D) heating at 180 degrees C, adding styrene-butadiene-styrene and stirring at 300-500 rpm for 30 minutes, (E) heating at 180-200 degrees C, adding atactic polypropylene polymer, stirring and dispersing for 15 minutes at 300-500 rpm, (F) heating at 180-200 degrees C, adding styrene-butadiene rubber and stirring at 300-500 rpm for 1-3 hours, (G) reducing stirring speed to 200-300 rpm and adding filler, heating at 180-200 degrees C, stirring and dispersing for 30 minutes.