- Author
-
Lawrence, W. H.
- Title
- Toxicity of Thermal Degradation Products of Spacecraft Materials. November 10, 1980-May 9, 1982.
- Coporate
- Tennessee Univ., Memphis
- Sponsor
- National Aeronautics and Space Admin., Houston, TX
- Report
-
NASA-CR-167615
May 7, 1982
138 p.
- Distribution
- Available from National Technical Information Service
- Contract
- NAS-9-15670
- Keywords
-
spacecraft materials
|
toxicity
|
thermal degradation
|
pyrolysis products
|
animals
|
inhalation
|
combustion
- Identifiers
- materials flammability
- Abstract
- Three polymeric materials were evaluated for relative toxicity of their pyrolysis products to rates by inhalation. These materials were: Y-7683 (LS 200), Y-7684 (Vonar 3 on Fiberglass) and Y-7685 (Vonar 3 on N W Polyester). Criteria employed for assessing relative toxicity were: l) lethality from in-chamber pyrolysis, 2) lethality from an outside-of-chamber pyrolysis procedure [MSTL Procedure], and 3) disruption of trained rats' shock-avoidance performance during sublethal exposures to in-chamber pyrolysis of the materials.