MoS2-filled coating on flexible polyurethane foam via layer-by-layer assembly technique: flame-retardant and smoke suppression properties

In the present work, a fire-blocking coating consisting of chitosan and molybdenum disulfide (MoS 2 ) was firstly deposited onto flexible polyurethane (FPU) foam by the layer-by-layer assembly technique. With the MoS 2 -filled coating, the FPU foam could burn without melt dripping during the whole c...

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Bibliographic Details
Published in:Journal of materials science 2018-06, Vol.53 (12), p.9340-9349
Main Authors: Pan, Haifeng, Shen, Qi, Zhang, Zinan, Yu, Bihao, Lu, Yushi
Format: Article
Language:English
Subjects:
Assembly
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chitosan
Classical Mechanics
Coating effects
Combustion
Cone calorimeters
Crystallography and Scattering Methods
Flame retardants
Heat release rate
Infrared analysis
Materials Science
Molybdenum disulfide
Polymer Sciences
Polymers
Polyurethane foam
Protective coatings
Pyrolysis
Smoke
Solid Mechanics
Thermal decomposition
Thermogravimetric analysis
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Summary:In the present work, a fire-blocking coating consisting of chitosan and molybdenum disulfide (MoS 2 ) was firstly deposited onto flexible polyurethane (FPU) foam by the layer-by-layer assembly technique. With the MoS 2 -filled coating, the FPU foam could burn without melt dripping during the whole combustion and keep its shape after combustion, while the pure foam was consumed completely. The analysis by thermogravimetric analysis/infrared spectrometry indicated that MoS 2 -filled coating could obviously reduce the amount of organic gaseous pyrolysis products and toxic volatiles during thermal decomposition of the foam. The cone calorimeter results indicated that the FPU foam with 8.5 wt% coating showed great reduction in peak of heat release rate (70%), peak smoke production rate (62.4%) and total smoke released (33.3%). Such a significant improvement in flame-retardant and the smoke suppression properties for FPU foam could be attributed to the protective effect of MoS 2 -filled coating.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-018-2199-2