It is understood that the special membrane for filtering air on the market mainly uses melt-blown fibers from several companies in the United States and China to prepare air filtration membranes. The fiber diameter is on the order of microns. There are disadvantages such as low filtration accuracy and large filtration resistance. The Chongqing Institute of Green and Intelligent Technology of the Chinese Academy of Sciences will prepare ultra-fine nanofibers as air purification membrane materials with higher filtration accuracy and lower filtration resistance. It can easily achieve 99.99% interception accuracy for 0.33UM ultrafine particles. And the economic cost is low, easy to promote.

Relevant personnel said that this nano air film can be widely used in anti-virus, anti-bacterial, PM2.5 protective mask, automotive air purification, indoor air purification, industrial dust removal, PM2.5 detection filter and so on.

In addition, the Chongqing Institute of Green and Intelligent Technology of the Chinese Academy of Sciences also used the micro/nano fiber reinforcement technology for the first time to obtain high-performance hollow fiber ultrafiltration membrane products, which doubled the strength and toughness of hollow fiber membranes.

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