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Thermal and combustion features of rigid polyurethane biofoams filled with four forest‐based wastes
Author(s) -
Delucis Rafael de Avila,
Magalhães Washington Luiz Esteves,
Petzhold Cesar Liberato,
Amico Sandro Campos
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24784
Subject(s) - polyurethane , materials science , isocyanate , thermogravimetry , compatibility (geochemistry) , composite material , combustion , thermal , polymerization , chemical engineering , polymer , organic chemistry , chemistry , physics , meteorology , engineering
In this study, four fillers from forest‐based wastes were studied using thermogravimetry and contact angle measurements, and their compatibility with polyurethane were investigated by infrared spectroscopy performed in induced reaction mixtures, wherein the fillers were tested in the presence of excess isocyanate and catalyst. The fillers were then incorporated into rigid bio‐based polyurethane foams (RPUFs), which were characterized using thermal and combustion analyses. Wood presented higher compatibility with the polyurethane system, leading to a copolymer formation comprised by urethane groups during its polymerization. Filled RPUF reached increased thermal and dimensional stabilities, and similar thermal conductivities and flammabilities compared with the neat RPUF. POLYM. COMPOS., 39:E1770–E1777, 2018. © 2018 Society of Plastics Engineers