▎ 摘　　要

NOVELTY - Preparing millimeter-scale core-shell structure sphere material involves feeding 5-10 pts. wt. polystyrene foam balls into a rotary drum, adjusting the working temperature of the rotary drum to 50-60degrees Celsius, adding 0.1-1 pts. wt. low-density material into the rotary drum, and uniformly mixing to obtain a first mixed spherical material, uniformly mixing 10 pts. wt. epoxy resin, 1 pts. wt. reactive diluent, 0.1 pts. wt. coupling agent and 1-4 pts. wt. amine curing agent to obtain a bottom shell coating, spraying the bottom shell coating on the surface of the first mixed spherical material by a spray gun to obtain a first core-shell structure spherical material, adjusting the working temperature of the rotary drum to room temperature, continuously adding 0.1-1 pts. wt. low-density material and 3-5 pts. wt. chopped fibers into the rotary drum to obtain a second mixed spherical material. USE - Method for preparing millimeter-scale core-shell structure sphere material. ADVANTAGE - The millimeter-scale core-shell sphere material has low energy consumption, low density, high strength and high yield, and improves the productivity and yield of millimeter-level core-shell sphere materials, and also has low density technical effect and high strength comprehensive performance. DETAILED DESCRIPTION - Preparing millimeter-scale core-shell structure sphere material involves feeding 5-10 pts. wt. polystyrene foam balls into a rotary drum, adjusting the working temperature of the rotary drum to 50-60degrees Celsius, adding 0.1-1 pts. wt. low-density material into the rotary drum, and uniformly mixing to obtain a first mixed spherical material, uniformly mixing 10 pts. wt. epoxy resin, 1 pts. wt. reactive diluent, 0.1 pts. wt. coupling agent and 1-4 pts. wt. amine curing agent to obtain a bottom shell coating, spraying the bottom shell coating on the surface of the first mixed spherical material by a spray gun to obtain a first core-shell structure spherical material, adjusting the working temperature of the rotary drum to room temperature, continuously adding 0.1-1 pts. wt. low-density material and 3-5 pts. wt. chopped fibers into the rotary drum to obtain a second mixed spherical material, then uniformly mixing 10 pts. wt. unsaturated polyester resin, 0.1-0.4 pts. wt. curing agent, 0.1 pts. wt. accelerator and 0.05 pts. wt. coupling agent to obtain a middle-layer shell coating, spraying the middle-layer shell coating on the surface of the second mixed spherical material through a spray gun to obtain a second core-shell structure spherical material and uniformly mixing 10 pts. wt. macromolecular polyol and 2-4 pts. wt. polyisocyanate curing agent to obtain a top shell coating, and spraying the top shell coating on the surface of the second core-shell structure spherical material by using a spray gun.