Enhancement of physical and reaction to fire properties of crude glycerol polyurethane foams filled with expanded graphite
authors Gama, NV; Silva, R; Mohseni, F; Davarpanah, A; Amaral, VS; Ferreira, A; Barros-Timmons, A
nationality International
journal POLYMER TESTING
author keywords Polyurethane foams; Crude glycerol; Expanded graphite; Reaction to fire; Fire behavior
keywords OIL-BASED POLYOL; FLAME-RETARDANT; THERMAL-STABILITY; PERFORMANCE; BEHAVIOR; MORPHOLOGY
abstract The reation to fire of polyurethane foams (PUFs) has been a subject of increasing relevance, so in this study the reaction to fire performance of PUFs derived from crude glycerol (CG) has been improved using expanded graphite (EG). The influence of different loadings of EG on the physical mechanical properties of composite foams has been assessed and the results obtained show that it has significant positive impact. Moreover, the reaction to fire of the PUF and EG/PUF composites has been investigated and the results obtained showed that the fire behavior of composite foams containing as little as 5 wt% of EG are significantly improved. Indeed a dramatic reduction of the rate of heat release, mass loss rate, effective heat of combustion and specific extinction area, has been observed even for a relative low amount of EG. Likewise, the use of Infrared Thermography as a function of time has proven that, when EG is used, the combustion stops suddenly and the temperature drops sharply compared with the behavior of the unfilled PUF sample, which suggests that EG acts like a flame extinguisher. The results obtained have proven the suitability of CG for the production of PUFs and that the addition of EG considerably improves the reaction to fire of composite foams.
publisher ELSEVIER SCI LTD
issn 0142-9418
year published 2018
volume 69
beginning page 199
ending page 207
digital object identifier (doi) 10.1016/j.polymertesting.2018.05.012
web of science category Materials Science, Characterization & Testing; Polymer Science
subject category Materials Science; Polymer Science
unique article identifier WOS:000442068000024
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journal analysis (jcr 2017):
journal impact factor 2.247
5 year journal impact factor 2.628
category normalized journal impact factor percentile 69.801
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