Guangdong has developed an organosilane-treated mask that can be worn for many days
At the press conference for the prevention and control of the new coronary pneumonia epidemic in Guangdong, Gong Guoping, deputy director of the Guangdong Provincial Department of Science and Technology, introduced that Guangdong has developed organosilane masks, heavy ion filter membrane masks, and PTFE filter membrane masks Relevant institutions have detected that the protection effect is good, and it can be used for multiple consecutive days. At the same time, the development of nano-fiber membrane masks can replace melt-blown fabrics at lower cost.
The Department of Science and Technology of Guangdong Province organizes related scientific research institutions, universities and enterprises in the province to carry out joint research and development, from two aspects of inner and outer non-woven fabric materials and intermediate melt-blown cloth alternative materials. Among them, the non-woven fabric treated with organosilane is used as the inner and outer layers of the mask, and the KN95 mask prepared by the melt-blown cloth for the middle layer can be continuously and effectively worn for 7 days after being tested by relevant institutions.
The polytetrafluoroethylene filter membrane and the heavy ion microporous membrane have a nanometer pore size, which can effectively isolate bacteria and viruses, and have the characteristics of high temperature resistance. Use Teflon filter membrane or heavy ion microporous membrane instead of melt-blown cloth to make reusable masks, which can be immersed in boiling water for cleaning or medical alcohol spray disinfection. It can be used more than 7 times after being tested by relevant agencies.
In response to the current price increase of melt-blown fabrics for core filter materials of masks and the high production cost of masks, relevant scientific research institutions, universities and enterprises in Guangdong Province are actively developing low-cost nanofiber filter membranes to replace melt-blown fabrics. The nanofiber membrane masks have been tested by relevant institutions and have reached the standard of medical surgical masks, and are disposable.