▎ 摘　　要

NOVELTY - Moisture barrier paint comprises 10-20 pts. wt. adhesive, 0.05-4.5 pts. wt. active micro-nano material, 0.5-1.5 pts. wt. sheet-like inorganic material, 0.05-0.5 pt. wt. fluororesin, 0.05-0.5 pt. wt. polypropylene, 10-15 pts. wt. xylene, 30-45 pts. wt. propylene glycol methyl ether acetate and 0.1-0.5 pt. wt. additives. The surface energy of the binder is ≤ 25 mJ/m2. USE - The moisture barrier coating is used for moisture resistance protection of rigid closed cell polyurethane foam (claimed). ADVANTAGE - The moisture barrier coating has excellent damp-proof performance and long-lasting effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: a method for preparing the moisture barrier paint, comprising adding adhesive, active micro-nano material, sheet-like inorganic material, fluororesin, polypropylene, xylene, propylene glycol methyl ether acetate and additives and mixing to obtain the moisture barrier paint; and an application of the moisture barrier paint in moisture resistance protection of rigid closed cell polyurethane foam.