Washable and reusable N95 mask

The invention discloses a washable and reusable N95 mask . The mask comprises a mask body including a polyimide nano aerogel film filtering layer, two non-woven fabric layers and two layers of surfacefabric; the two non-woven fabric layers are respectively stacked on two sides of the polyimide nano aerogel film filtering layer, the two layers of surface fabric are respectively stacked on sides, opposite to the polyimide nano aerogel film filtering layer, of the two non-woven fabric layers, and the edges of the polyimide nano aerogel film filtering layer, the non-woven fabric layers and the surface fabric are sewn into a whole. The washable and reusable N95 mask has a good protection function, can be repeatedly washed and reused, has stable protection performance after being repeatedly washed, and is small in inspiration resistance and expiration resistance and high in filtering efficiency. 本发明公开了一种可水洗重复使用的N95口罩，包括口罩本体，口罩本体包括聚酰亚胺纳米气凝胶膜过滤层、两层无纺布层和两层面层布，两层无纺布层分别叠设在聚酰亚胺纳米气凝胶膜过滤层的两面，两层面层布分别叠设在两层无纺布层与聚酰亚胺纳米气凝胶膜过滤层相