Experimental Study on Pyrolysis of Black Non-Charring Polymers in the Reduced-Pressure Environment

Experimental Study on Pyrolysis of Black Non-Charring Polymers in the Reduced-Pressure Environment A series of experiments on a black non-charring polymer in the low-pressure chamber is conducted under different external heat fluxes. The surface and bottom temperatures and the mass loss of the sample are measured. A parameter T p is introduced to describe the impact of pressure on the surface temperature. There is a loose layer of the char residue left with significant pyrolysis bubbles under the low heat flux, and the bubble size decreases with pressure. The parameter T p is found to exhibit a significant decline trend with increasing pressure, and the mass loss rate of the sample decreases apparently as the pressure increases. However, under a high heat flux, the char residue is denser, and the pyrolysis bubbles are not observed. The value of T p and the mass loss rate of the sample have no obvious relationship with pressure. The average pyrolysis rate is linearly proportional to p a . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Combustion, Explosion, and Shock Waves Springer Journals

Experimental Study on Pyrolysis of Black Non-Charring Polymers in the Reduced-Pressure Environment

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Publisher
Pleiades Publishing
Copyright
Copyright © 2018 by Pleiades Publishing, Ltd.
Subject
Physics; Classical Mechanics; Classical and Continuum Physics; Physical Chemistry; Vibration, Dynamical Systems, Control; Engineering, general
ISSN
0010-5082
eISSN
1573-8345
D.O.I.
10.1134/S0010508218030073
Publisher site
See Article on Publisher Site

Abstract

A series of experiments on a black non-charring polymer in the low-pressure chamber is conducted under different external heat fluxes. The surface and bottom temperatures and the mass loss of the sample are measured. A parameter T p is introduced to describe the impact of pressure on the surface temperature. There is a loose layer of the char residue left with significant pyrolysis bubbles under the low heat flux, and the bubble size decreases with pressure. The parameter T p is found to exhibit a significant decline trend with increasing pressure, and the mass loss rate of the sample decreases apparently as the pressure increases. However, under a high heat flux, the char residue is denser, and the pyrolysis bubbles are not observed. The value of T p and the mass loss rate of the sample have no obvious relationship with pressure. The average pyrolysis rate is linearly proportional to p a .

Journal

Combustion, Explosion, and Shock WavesSpringer Journals

Published: Jun 1, 2018

References

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