▎ 摘　　要

NOVELTY - Strong mechanical overall performance fly ash matrix composite material comprises 2-3 pts. wt. graphene, 4-7 pts. wt. barium sulfate, 5-25 pts. wt. fly ash micro-beads, 65-85 pts. wt. aluminum-magnesium alloy powder, 4-6 pts. wt. lithium powder, 4-6 pts. wt. copper powder, 0.5-1.1 pts. wt. polyvinyl alcohol, and balance distillation water. USE - Strong mechanical overall performance fly ash matrix composite material. ADVANTAGE - The composite material keeps the intensity of graphene, has good wettability and enhanced elastic modulus and tensile strength, and has uniform and compact tissue, less defect, tight reinforcing phase, and good physical and mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of fly ash matrix composite material comprising: (A) taking fly ash microbead, dipping in 10 mol/L sulfuric acid solution for 2-3 hours, washing with distilled water, neutral surface drying, using metal atomization injection on spray gun for drying fly ash microbead surface, and forming plating layer; (B) mixing 1: 3-4 volume of graphene and anhydrous ethyl alcohol to obtain mixed liquid, adding barium sulfate in mixed liquid, ultrasonic dispersing for 10-30 minutes, drying, and using mixture for future use; (C) mixing aluminum-magnesium alloy powder, lithium powder and fly ash microbead in mixing machine 2-4 hours, adding polyvinyl alcohol and distilled water, mixing, stirring to form wet mixture, continuously mixing for 2-3 hours, pressurizing, drying, and standing to form preform; and (D) placing preform in tubular furnace, purging nitrogen, sintering at 300-500 degrees C for 0.5-1 hour, sintering again at 550-580 degrees C for 2-3 hours, and cooling.