Preparation and properties of flame retardant air filter media by incorporation of melamine-formaldehyde fiber and phosphorous-containing poly-acrylate binder

In this study, paper based pristine air filter media composed of cellulose fiber and melamine-formaldehyde (MF) fiber was prepared by wet forming method, then phosphorous-containing poly-acrylate (P-PA) emulsion was used as a strengthen binder to prepared flame retardant air filter media. Effects of MF fiber and P-PA binder content on the basic properties, mechanical properties, air permeability and char yield of the prepared air filter media were studied. The micro-structure of prepared flame retardant air filter media was observed by Scanning Electronic Microscopy. The flame retardancy mechanism of the prepared air filter media was discussed. The result shows that by incorporation of MF fiber and using P-PA binder as a strengthen binder, air filter media with excellent flame-retardancy can be prepared, which was due to a synergistic effect of gas and condensed mechanism.