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- Title
热重-红外-质谱联用研究酚醛泡沬塑料热解过程.
- Authors
孙诗兵; 高庆; 田英良; 马保国
- Abstract
The pyrolysis characteristic of phenolic foam was investigated by use of thermogravimetry-Fou- rier transform infrared spectrometry-mass spectrometry (TG-FTIR-MS). The results show that pyrolysis process can be divided into three stages. At the first stage, the mass loss rate is low, and the gases of small molecular mass, such as H2O and HCHO, escaped physically. The second stage is the beginning of pyrolysis reaction, at which H2O,HCHO,CO2,SO2,SCH4(methanethiol) and C2NH5(aziridine) are produced. At the third stage, the main chain fractures and pyrolyses, CO2 is spawned. Generation rate of C2NH7 (dimethylamine), CH2O2 (formic acid) , HCHO and C2NH5 reach maximum. At 425. 58 °C the mass loss rate attain maximum, -1.478 7 %/min. The pyrolysis reaction of phenolic foam in this stage is the most violent. The sum of mass loss at the second and third stage is 84% of the whole mass. The whole process of mass loss ends at 565. 20 °C.
- Publication
Jianzhu Cailiao Xuebao: Journal of Building Materials, 2014, Vol 17, Issue 2, p246
- ISSN
1007-9629
- Publication type
Article
- DOI
10.3969/j.issn.1007-9629.2014.02.011