Journal
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
Volume 128, Issue -, Pages 102-113Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jaap.2017.10.020
Keywords
Polyurethane foam (PUF); Castor oil (CO); Flame-retardant polyol; Flame retardancy; Thermal degradation
Funding
- Jiangsu province key lab of biomass energy and material [JSBEM-S-201706]
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A novel, castor oil (CO)-based, flame-retardant polyol containing phosphorus and nitrogen was successfully synthesized. The novel polyol was characterized by Fourier transform infrared (FTIR), proton nuclear magnetic resonance (H-1 NMR), and carbon-13 nuclear magnetic resonance (C-13 NMR) spectroscopies. Flame-retardant polyurethane foams (FRPUF) were prepared by curing flame retardant polyols (FRPE) and flame retardant di-hydric alcohol (BHAPE) with polyisocyanate (PM-200). The flame retardant properties and thermal decomposition of FRPUF were investigated using the limiting oxygen index (LOI), cone calorimeter testing, and thermogravimetric analysis (TGA). The FRPE and SHAPE composites were found to enhance the thermal stability and flame retardancy of polyurethane foams (PUF) without the use of other flame retardants. Insight was gained into the gaseous degradation products of FRPUF using thermogravimetric analysis-infrared spectrometry (TG-IR) and thermogravimetric analysis-mass spectrometry (TG-MS). The character of polyurethane foams was explored using FTIR, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Gas phase pyrolysis products were investigated by TG-IR and TG-MS. Good flame retardancy was observed in FRPUF, which was attributed to the flame retardant FRPE and SHAPE.
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