▎ 摘　　要

NOVELTY - A blackboard coating comprises 300-400 pts. wt. lime, 100-150 pts. wt. clay, 25-35 pts. wt. graphene, 10-30 pts. wt. starch, 1-6 pts. wt. wetting dispersant, 50-60 pts. wt. diatomaceous earth, 5-10 pts. wt. glass fiber, 20-30 pts. wt. film-forming resin, 5-15 pts. wt. adhesive, 5-10 pts. wt. silane coupling agent, 2-8 pts. wt. defoamer, 1-15 pts. wt. matting agent, 6-10 pts. wt. leveling agent, 3-10 pts. wt. adhesion promoter, 1-10 pts. wt. anti-settling agent, 4-10 pts. wt. thickener, 6-9 pts. wt. mildew preventive, 1-5 pts. wt. antifreeze, and 5-45 pts. wt. deionized water. USE - Blackboard coating. ADVANTAGE - The blackboard coating can be manufactured conveniently, enables clean and quality writing, and has excellent wear resistance, deformation resistance, crack resistance, and aging resistance, and prolonged service life.