Journal
AEROSPACE SCIENCE AND TECHNOLOGY
Volume 119, Issue -, Pages -Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2021.107079
Keywords
Carbon/phenolic composite; Pyrolysis; Gas chromatography
Categories
Funding
- SB PhD fellowship of the Research Foundation Flanders (FWO) [1S58718N]
- Fund for Research Training in Industry and Agriculture (FRIA) by the Belgian Fund for Scientific Research (F.R.S.-FNRS) [1E05418F]
- European Research Council under the European Union's Horizon 2020 research and innovation programme/ERC grant [818607]
Ask authors/readers for more resources
The decomposition of phenolic material representative of thermal protection material was studied, revealing more than 50 pyrolysis products with a mass balance closure greater than 80%. Major compound groups identified include permanent gases, phenols, and larger molecules. The char yield at fast heating rates was found to be slightly lower compared to traditional thermogravimetry.
Thermal Protection Materials (TPM) such as carbon/phenolic composites are used to protect spacecraft structures from extreme conditions. This protection is, in part, achieved by the decomposition via pyrolysis of the phenolic resin. Finite rate chemistry models are however still unable to predict the chemical production rates and composition of the pyrolysis products accurately. This is mostly due to the scarcity of experimental data for model validation. In this work, the decomposition of a phenolic material representative of thermal protection material is studied in a unique micro-pyrolysis unit for the temperature range 300-800 degrees C. This unit is equipped with highly sensitive detectors allowing us to identify and quantify products in a broad range of molecular weights up to 240 g mol(-1). More than 50 different products of the pyrolysis of phenolic resin have been quantified with a mass balance closure greater than 80%. The major compound groups found are permanent gases, phenols as well as larger molecules such as diphenols and naphthalenes. In addition, the char yield obtained at the fast heating rates employed in our apparatus was found similar to 5%-points lower compared to traditional thermogravimetry. (C) 2021 Elsevier Masson SAS. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available