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The effects of particle size on the optical properties and surface roughness of a glass-balloon-filled black paint
- Publication Year :
- 1974
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1974.
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Abstract
- The effects of particle size on the optical properties and surface roughness of a glass-balloon-filled, carbon-pigmented paint were studied in order to develop a diffuse-reflecting, low-total-reflectance, low-outgassing black paint. Particle sizes ranged between 20 microns and 74 microns. Surface roughness was found to increase with increasing particle size. Relative total reflectance at near-normal incidence (MgO standard) of the filled paints was less than for the unfilled paint between 230 nm and 1800 nm. Total absolute reflectance at 546 nm decreased with increasing particle size at grazing angles of incidence. Near-normal, total emittance was greater for the filled paints than for the unfilled paint. Specularity decreased with increasing particle size over the range studied.
- Subjects :
- Materials, Nonmetallic
Subjects
Details
- Language :
- English
- Database :
- NASA Technical Reports
- Notes :
- RTOP 039-23-01-01
- Publication Type :
- Report
- Accession number :
- edsnas.19740014114
- Document Type :
- Report