简体中文
English 
Korean 
日本語 
Español 
Deutsch 
Russian 
Thai 
Français 
ITALIANO
Antibacterial and Antiviral Polypropylene Melt-Blown Nonwoven Technology Achieves Mass Production
Beijing, China - November 21, 2024: A team of researchers has successfully commercialized an antibacterial and antiviral polypropylene melt-blown nonwoven technology, addressing the critical issue of secondary microbial contamination in traditional filter materials. The technology integrates surface bioactivity regulation of nano-magnesium oxide, interface compatibility control of nano-magnesium oxide/polypropylene composites, and advanced melt spinning processes to produce multi-functional nonwovens suitable for a wide range of applications.
Traditional polypropylene melt-blown fabrics rely solely on fiber pores to intercept particles but cannot inactivate captured bacteria and viruses, posing a risk of secondary pollution. The new technology overcomes this limitation by incorporating nano-magnesium oxide, a non-toxic antibacterial agent that is safer for human cells compared to traditional silver-based or organic antibacterial agents. The nano-magnesium oxide preparation process is environmentally friendly and compatible with existing polypropylene granulation and melt-blown production lines, requiring no additional equipment investment.
Testing results show that the composite melt-blown fibers achieve over 99% inactivation efficiency against Escherichia coli, Staphylococcus aureus, and Candida albicans. For viruses, the inactivation rate reaches 99.99% for H1N1 and H3N2 influenza viruses, over 99% for COVID-19, and more than 99.99% for human coronaviruses. The product has passed tests for in vitro cytotoxicity, skin irritation, and skin sensitization, confirming its safety for human contact.
The technology has already been applied in the production of anti-COVID masks, antibacterial and antiviral automotive air filters, and air purifier cartridges. It holds significant potential for use in hospital microbial protection, air purification in enclosed spaces (such as large buildings and aerospace cabins), and military chemical defense equipment, supporting national public health security efforts.