Survey of material for an infrared-opaque coatingMore than 40 reflectance spectra in the range from 20 to 500 microns have been obtained of a variety of coatings, binders, and additives to identify promising components of an infrared-opaque coating for the Space Infrared Telescope Facility. Certain combinations of materials showed a specular reflectance below 0.1 throughout the spectral range measured. In addition to estimating the optical constants of several combination coatings, this survey also supports three qualitative conclusions: (1) promising 'off-the-shelf' binders of different additives are Chemglaze Z-306, ECP-2200, and De Soto Black; (2) carbon black is very effective reducing far-infrared reflectance; and (3) the far-infrared reflectance from coatings containing 80 SiC grit is consistently lower than that from similar coatings containing TlBr powder.
Document ID
19870057253
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smith, Sheldon M. (NASA Ames Research Center Moffett Field, CA, United States)
Howitt, Richard V. (Teletrac, Inc. Goleta, CA, United States)