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Proceedings Paper

Destruction of polytetrafluoroethylene under the action of carbon dioxide laser radiation at low pressure
Author(s): Eugene M. Tolstopyatov; Leonid F. Ivanov; Peter N. Grakovich; Anatoly M. Krasovsky
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Paper Abstract

Anomalous, in comparison to other polymers, behavior of PTFE under the action of continuous CO2-laser radiation in vacuum is analyzed. Under the above conditions the polymer is found to decompose into TFE and solid particles in the form of fibers measuring 5 ... 20 micrometer in diameter or powder with micrometer particle size. Formation of two zones of polymer degradation differing in structure and viscosity is established. The temperature of PTFE surface during degradation reaches 800 K. The bulk of the layer subjected to radiation is found to contain gaseous bubbles. The qualitative model of PTFE degradation process is discussed.

Paper Details

Date Published: 14 September 1998
PDF: 8 pages
Proc. SPIE 3343, High-Power Laser Ablation, (14 September 1998); doi: 10.1117/12.321538
Show Author Affiliations
Eugene M. Tolstopyatov, Metal-Polymer Research Institute (Belarus)
Leonid F. Ivanov, Metal-Polymer Research Institute (Belarus)
Peter N. Grakovich, Metal-Polymer Research Institute (Belarus)
Anatoly M. Krasovsky, Metal-Polymer Research Institute (Belarus)

Published in SPIE Proceedings Vol. 3343:
High-Power Laser Ablation
Claude R. Phipps, Editor(s)

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