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Proceedings Paper

Electrically Conductive Black Optical Paint
Author(s): Morris M. Birnbaum; Edward C. Metzler; Edward L. Cleland
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Paper Abstract

An electrically conductive flat black paint has been developed for use on the Galileo spacecraft which will orbit Jupiter in the late 1980s. The paint, designed for equipment operating in high-energy radiation fields, has multipurpose functions. Its electrical conductivity keeps differential charging of the spacecraft external surfaces and equipment to a minimum, preventing the buildup of electrostatic fields and arcing. Its flat black aspect minimizes the effects of stray light and unwanted reflectances, when used in optical instruments and on sunshades. Its blackness is suitable, also, for thermal control, when the paint is put on spacecraft surfaces. The paint has good adherence properties, as measured by tape tests, when applied properly to a surface. The electrically conductive paint which was developed has the following characteristics: an electrical resistivity of 5 x 107 ohms per square; a visual light total reflectance of approximately 5 percent; an infrared reflectance of 0.13 measured over a spectrum from 10-5.5 to 10-3 meter; a solar absorptivity, αs, of 0.93, and a thermal emissivity, ∈, of 0.87, resulting in an αs/∈ of 1.07. The formula for making the paint and the process for applying it are described.

Paper Details

Date Published: 5 April 1983
PDF: 11 pages
Proc. SPIE 0362, Scattering in Optical Materials II, (5 April 1983); doi: 10.1117/12.934134
Show Author Affiliations
Morris M. Birnbaum, California Institute of Technology (United States)
Edward C. Metzler, California Institute of Technology (United States)
Edward L. Cleland, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0362:
Scattering in Optical Materials II
Solomon Musikant, Editor(s)

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