Thermal decomposition of polyurethane foams for manufacturing LZSA cellular glass ceramics

Química Nova

Universidad de los Andes, Bogotá, Colômbia¹  Escobar, Jairo A.¹  Universidade do Estado de Santa Catarina, Lages, Brasil¹  Universidade Federal de Santa Catarina, Florianópolis, Brasil¹  Rambo, Carlos Renato¹  Sousa, Eliandra de¹  Quintero, Miguel W.¹  Moraes, Elisângela Guzzi de¹  Oliveira, Antônio Pedro Novaes de¹  Hotza, Dachamir¹  Silveira, Cristian Berto da¹ 

关键词: PUR foams;    cellular ceramics;    glass ceramics;   

DOI  :  10.1590/S0100-40422007000500010

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Characterization of the thermal decomposition of polyurethane (PUR) foams was performed by Fourier-transformed infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA). Three main weight loss paths were observed by TGA, the residue being lower than 3 wt.% for 3 different PUR foams analyzed. FT-IR spectra indicated CO2, CO, NH3 and isocyanides as main decomposition products. PUR foams of different cell sizes were immersed in a slurry of the parent glass ceramic of composition Li2O-ZrO2-SiO2-Al 2O3 (LZSA) and submitted to heat treatment. The LZSA cellular glass ceramics obtained after sintering and crystallization resembled the original morphology of the PUR foams.

【 授权许可】

Unknown