期刊
POLYMERS
卷 13, 期 19, 页码 -出版社
MDPI
DOI: 10.3390/polym13193205
关键词
rigid PU-PIR foam; analytical pyrolysis; physical hazards; health hazards; environmental hazards
资金
- European Regional Development Fund [1.1.1.1/16/A/031]
This study analyzed rigid polyurethane (PU) and polyisocyanurate (PIR) foam samples made from renewable material through pyrolysis gas chromatography mass spectrometry (Py-GC/MS). The main thermal degradation components were found to originate from the decomposition of isocyanate, forming suspected carcinogens and mutagens. The focus was on identifying and evaluating the relative quantities of the produced gaseous products and examining their hazardousness.
In this study, rigid polyurethane (PU) and polyisocyanurate (PIR) foam samples made from renewable material (tall oil fatty acid) based polyols were analyzed by pyrolysis gas chromatography mass spectrometry (Py-GC/MS) to obtain information about the full relative smoke content, with a focus on substance identification by their functional groups and hazardousness. The relative content of gaseous products produced during the thermal degradation was evaluated between the two samples, differenced by their assigned isocyanate (NCO) index value-150 and 300. The main thermal degradation components of the rigid PU-PIR foam were found to originate from the decomposition of isocyanate, primarily forming 4,4 & PRIME;-methylenedianiline, 3,3 & PRIME;-diaminodiphenylmethane, N-methylaniline, aniline, 4-benzylaniline and phenyl isocyanate. Hazard analysis revealed that the most common hazards were the hazards related to health: H315 (36%), H319 (28%), H335 (25%), and H302 (23%). The chemical compound with the highest relative content value-4,4 & PRIME;-methylenedianiline (45.3% for PU and 52.4% for PIR)-was identified to be a suspected carcinogen and mutagen. The focus of the study was identifying and evaluating the relative quantities of the produced gaseous products, examine their hazardousness, and provide information on the released thermal degradation products to form a renewable-source based rigid PU and PIR foam.
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