New nanofiber membrane high efficiency anti-mite mask will be available

Efficiently intercepts almost all fine particles, and people will not feel that breathing is not smooth when worn. On December 26th, Chongqing Zhongling Environmental Protection Industry Technology Research Institute Co., Ltd. (hereinafter referred to as “Zhongling Environmental Protection”) released a self-developed “anti-mite artifact” – nano-fiber membrane high-efficiency anti-mite mask . It is reported that the mask has been mass-produced and will be officially launched in the near future.

Ren Yiwei, director of the Center for Membrane Technology and Application Engineering of the Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, said that most of the masks on the market are protected by electrostatic adsorption or electrostatic adsorption combined with physical interception of particulate matter, but electrostatic adsorption. There are some shortcomings, after the long-term use of the mask, the static electricity will be caused by the moisture in the air, and the filtration precision of the fine particles will be lowered.

The nanofiber membrane high-efficiency anti-smashing mask released this time is completely protected by physical interception. The core technology lies in the electrospun nanofiber membrane jointly developed by Chongqing Research Institute of the Chinese Academy of Sciences and Zhongling Environmental Protection.

According to reports, this nanofiber membrane has a particularly small pore size and is used as a filter layer for masks. The filtration accuracy of particles of 0.33 micron (1 micron = 1000 nm) is as high as 99.99%, and PM2.5 is intercepted (2.5 micrometers or less). And it carries a variety of harmful microorganisms, heavy metals, etc.

In addition, the nanofiber membrane has the characteristics of low resistance, and the resistance can be adjusted within 60Pa-270Pa, which is far lower than the national standard (less than 350Pa), that is to say, people do not feel that breathing is not smooth after wearing.

"We have also designed a cold flow exhalation valve that is easy to open when exhaled, and emits heat and moisture in a timely manner. For those wearing glasses, it will not cause fogging of the glasses," he said.

It is understood that since the beginning of research and development in 2011, they have applied for six patents related to the core technology of electrospun nanofiber membranes. After the first domestic research and development of results in 2013, after a small test, a pilot test to industrialization, now on the scale A major breakthrough has been made in chemical production.

Ren Yiwei told the Chongqing Daily reporter that the breakthroughs they made were mainly in two aspects. First, the industrialization of nanofiber membrane production equipment was realized, and the large-scale production of materials was realized. Second, the nanofiber membrane was firstly applied to mask products.