期刊
POLYMER DEGRADATION AND STABILITY
卷 112, 期 -, 页码 122-131出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2014.12.020
关键词
Phenol-formaldehyde resin; Pyrolysis; Reaction kinetics; Species production; Gas chromatography
资金
- NASA's Fundamental Aeronautic Program Hypersonics NRA grant [NNX12AG47A]
- Space Technology Research Grants Program
- von Karman Institute (VKI) for Fluid Dynamics
- NASA [75662, NNX12AG47A] Funding Source: Federal RePORTER
Batch pyrolysis of a commercial resole type phenol-formaldehyde resin was performed using a step-wise heating procedure in a temperature increment of 50 K from 320 to 1290 K. A resin sample of 50 mg was loaded in a reactor assembly specifically designed and built for this study. Mass loss was measured after each 50 K step and the production of pyrolysis products was quantified using gas chromatography techniques. The overall mass loss from the samples reached 39.2% after the entire procedure. Three major product families were identified: 1) water is the most dominant product at a pyrolysis temperature below 800 K; 2) phenol derivatives (aromatic alcohols) have significant yields at a pyrolysis temperature between 500 and 850 K; 3) permanent gases such as hydrogen, methane, carbon monoxide, and carbon dioxide have the highest yields at a temperature above 800 K. Minor products observed include aromatics, which are formed between 700 and 850 K, and C-2 to C-4 light hydrocarbons, which are only formed above 800 K and peak at 1000 K. (C) 2014 Elsevier Ltd. All rights reserved.
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