▎ 摘　　要

NOVELTY - Protective mask comprises polypropylene meltblown composite masterbatch composed of 50-100 pts. wt. polypropylene, 1-10 pts. wt. modified alumina aerogel and 5-10 pts. wt. electret masterbatch. USE - The protective mask is useful for medical and civil use (claimed). ADVANTAGE - The protective mask: has functions of blocking dust and filtering viruses; solves the fluidity problem of polypropylene in the process of preparing melt blown cloth; avoids the possible hard and brittle mechanical property defects of melt blown cloth; and has excellent tensile property and comfort. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is also included for preparing protective mask.