Back to Search
Start Over
Highly Effective Flame-Retardant Rigid Polyurethane Foams: Fabrication and Applications in Inhibition of Coal Combustion
- Source :
- Polymers, Volume 11, Issue 11, Polymers, Vol 11, Iss 11, p 1776 (2019)
- Publication Year :
- 2019
-
Abstract
- The extemporaneous combustion of coal remains a major threat to safety in coal mines because such fire accidents result in casualties and significant property loss, as well as serious environmental pollution. This work proposed the fabrication of flame-retardant rigid polyurethane foam (RPUF) containing expandable graphite as char expander/sealant with melamine phosphosphate and 2-carboxyethyl (phenyl)phosphinic acid as char inducer and radical trapping agents. The as-prepared RPUF successfully inhibited coal combustion by forming thermally stable high graphitic content expandable intumescent char sealing over the coal. The RPUF achieved UL-94 V-0 rating in addition to significant reductions in peak heat release, total heat release, and CO and CO2 yields. The external and the internal residual char structure was studied by X-ray photoelectron spectra, Raman spectroscopy, and real-time Fourier transform infrared spectra techniques, and a flame-retardant mode of action has been proposed. This work provides important insight into a facile fabrication of highly efficient and economical flame-retardant RPUF to inhibit the spontaneous combustion of coal.
- Subjects :
- Materials science
Polymers and Plastics
Polyurethane foam
Coal combustion products
Environmental pollution
02 engineering and technology
010402 general chemistry
Combustion
01 natural sciences
Article
lcsh:QD241-441
lcsh:Organic chemistry
Coal
Char
coal combustion
phosphorus
Spontaneous combustion
intumescent flame-retardant
business.industry
technology, industry, and agriculture
General Chemistry
expandable graphite
021001 nanoscience & nanotechnology
0104 chemical sciences
Chemical engineering
0210 nano-technology
business
Intumescent
Fire retardant
Subjects
Details
- ISSN :
- 20734360
- Volume :
- 11
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- Polymers
- Accession number :
- edsair.doi.dedup.....6f118dc120e4ad07c1047b1d82d7f0fb