Citation

Kim YS, Li YC, Pitts WM, Werrel M, Davis R. ACS Appl. Mater. Interfaces 2014; 6(3): 2146-2152.

Copyright

(Copyright © 2014, American Chemical Society)

DOI

10.1021/am405259n

PMID

24422757

Abstract

Layer-by-Layer (LbL) assembly coatings reduce the flammability of textiles and polyurethane foam, but require extensive repetitive processing steps to produce the desired coating thickness and nanoparticle fire retardant content that translates into a fire retardant coating. Reported here is a new hybrid bilayer (BL) approach to fabricate fire retardant coatings on polyurethane foam. Utilizing hydrogen bonding and electrostatic attraction along with the pH adjustment, a fast growing coating with significant fire retardant clay content was achieved. This hybrid BL coating exhibits significant fire performance improvement in both bench scale and real scale test. Cone calorimetry bench scale test show a 42% and 71% reduction in peak and average heat release rates, respectively. Real scale furniture mockups constructed using the hybrid LbL coating reduced the peak and average heat release rates by 53% and 63%, respectively. This is the first time the fire safety in a real scale test has been reported for any LbL technology. This hybrid LbL coating is the fastest approach to develop an effective fire retardant coating for polyurethane foam.

Language: en