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- Title
Mechanically Sustainable Starch-Based Flame-Retardant Coatings on Polyurethane Foams.
- Authors
Choi, Kyung-Who; Kim, Jun-Woo; Kwon, Tae-Soon; Kang, Seok-Won; Song, Jung-Il; Park, Yong-Tae
- Abstract
The use of halogen-based materials has been regulated since toxic substances are released during combustion. In this study, polyurethane foam was coated with cationic starch (CS) and montmorillonite (MMT) nano-clay using a spray-assisted layer-by-layer (LbL) assembly to develop an eco-friendly, high-performance flame-retardant coating agent. The thickness of the CS/MMT coating layer was confirmed to have increased uniformly as the layers were stacked. Likewise, a cone calorimetry test confirmed that the heat release rate and total heat release of the coated foam decreased by about 1/2, and a flame test showed improved fire retardancy based on the analysis of combustion speed, flame size, and residues of the LbL-coated foam. More importantly, an additional cone calorimeter test was performed after conducting more than 1000 compressions to assess the durability of the flame-retardant coating layer when applied in real life, confirming the durability of the LbL coating by the lasting flame retardancy.
- Subjects
HEAT release rates; URETHANE foam; SURFACE coatings; POISONS
- Publication
Polymers (20734360), 2021, Vol 13, Issue 8, p1286
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym13081286