Improved flame-retardant properties of polydimethylsiloxane/multi-walled carbon nanotube nanocomposites

The flame-retardant properties of polydimethylsiloxane (PDMS)/oxidised multi-walled carbon nanotubes (MWCNT–COOH) nanocomposite films were dispersed using a nonionic acrylate copolymer surfactant. The nanocomposite films were prepared by spin coating and characterised using SEM, quasi-elastic cold-n...

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Bibliographic Details
Published in:Journal of materials science 2021, Vol.56 (3), p.2192-2211
Main Authors: Kabir, Imrana I., Fu, Yifeng, de Souza, Nicolas, Nazir, Muhammad Tariq, Baena, Juan Carlos, Yuen, Anthony Chun Yin, Yeoh, Guan Heng
Format: Article
Language:English
Subjects:
Analysis
Barriers
Calorimetry
Carbon
Carbon dioxide
Carbon monoxide
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Cold spinning
Composites & Nanocomposites
Copolymers
Crystallography and Scattering Methods
Dimethylpolysiloxane
Elastic scattering
Flame retardants
Heat release rate
Materials Science
Multi wall carbon nanotubes
Nanocomposites
Nanotubes
Neutron scattering
Polydimethylsiloxane
Polymer Sciences
Smoke
Solid Mechanics
Spin coating
Surface active agents
Surfactants
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Summary:The flame-retardant properties of polydimethylsiloxane (PDMS)/oxidised multi-walled carbon nanotubes (MWCNT–COOH) nanocomposite films were dispersed using a nonionic acrylate copolymer surfactant. The nanocomposite films were prepared by spin coating and characterised using SEM, quasi-elastic cold-neutron scattering, TGA–FTIR, cone calorimetry, and LOI. The PDMS/surfactant/MWCNT–COOH (PSM) nanocomposite displayed superior flame-retardant performance compared to materials containing only surfactant or MWCNT–COOH. The peak heat release rate, the peak smoke production rate, total smoke release rate, carbon monoxide, and carbon dioxide production from PSM were 42, 47, 18, 28, and 47% less than the PDMS control. The LOI results for PSM exhibited a value of 32% with respect to 25% for the PDMS. PSM suppresses the smoke emission and inhibits penetration of the air reacting with the gas volatiles of the material. These new nanocomposites provide a valuable improvement in flame-retardant capabilities by physical barrier effect compared to other PDMS polymer materials. Graphic abstract
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-020-05411-x