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Synthesis of MoO3 with different morphologies and their effects on flame retardancy and smoke suppression of polyurethane elastomer.
- Source :
- Polymers for Advanced Technologies; Jul2016, Vol. 27 Issue 7, p964-972, 9p
- Publication Year :
- 2016
-
Abstract
- Molybdenum trioxide (MoO<subscript>3</subscript>) microrods, nanofibers, and nanoplates were synthesized via the hydrothermal method and high-temperature calcination method, respectively. Then the MoO<subscript>3</subscript> was added into polyurethane elastomer, respectively. The flame retardancy and smoke suppression of the composites added with different MoO<subscript>3</subscript> were studied by thermal gravimetric analysis, cone calorimeter, and smoke density. The results show that the three kinds of MoO<subscript>3</subscript> with different morphologies could promote the formation of char and possess flame retardancy and smoke suppression, and MoO<subscript>3</subscript> nanofibers exhibit a higher degree of flame retardancy, and 1 wt% addition could make the peak heat release rate of polyurethane elastomer composites reduce from 881.6 kW m<superscript>−2</superscript> for a pure sample to 343.4 kW m<superscript>−2</superscript>, a decrease by 61.0%. As for smoke suppression, MoO<subscript>3</subscript> nanoplates possess the best smoke suppression; 5 wt% could decrease a pure sample's smoke density by 41.3% from 361 to 212. Moreover, the char residue of composites after combustion was analyzed by Raman spectra and X-ray photoelectron spectroscopy, and the flame retardancy and smoke suppression mechanisms of MoO<subscript>3</subscript> were discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10427147
- Volume :
- 27
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Polymers for Advanced Technologies
- Publication Type :
- Academic Journal
- Accession number :
- 116102475
- Full Text :
- https://doi.org/10.1002/pat.3756