Accession Number : AD0830980

Title :   PRODUCTION OF HIGH PURITY THERMAL CONTROL COATINGS.

Descriptive Note : Final rept. 1 Jun 66-30 Feb 68,

Corporate Author : LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA

Personal Author(s) : Bailin, Lionel J.

Report Date : APR 1968

Pagination or Media Count : 200

Abstract : Methods, process controls, and equipment have been developed for preparing high purity inorganic-based thermal control coatings for spacecraft. Two pigments, ZrO2.SiO2 and LiAlSiO4, have been synthesized in the laboratory, optimized, and produced in multipound quantities. The effects of ionic impurities, synthesis, and pigment purification parameters on the space radiation stability of the pigments and pigment-potassium silicate binder systems have been studied in detail. Optimization of the pigment-potassium silicate matrix for preparation of gallon quantities has been carried out. Formulation of these quantities is now routine. Application by spray and drawdown techniques for a variety of aluminum and titanium space vehicular shapes and sizes has been successful with no cracking or loss of adhesion. Coating preparation and deposition methods have evolved to produce inorganic coatings of minimal optical and physical changes in laboratory-simulated space radiation and vacuum environments. The potential for effectively coating large and complex shapes and structures with a high degree of reproducibility and reliability has been demonstrated. (Author)

Descriptors :   (*SPACECRAFT, TEMPERATURE CONTROL), (*COATINGS, PRODUCTION), PIGMENTS, SILICATES, ZIRCONIUM OXIDES, SILICON DIOXIDE, LITHIUM COMPOUNDS, ALUMINUM COMPOUNDS, SYNTHESIS(CHEMISTRY), OPTIMIZATION, PURIFICATION, IMPURITIES, BINDERS, POTASSIUM COMPOUNDS, ADHESION, SPRAYS, SOLAR RADIATION, STABILITY, DOPING, SUBSTRATES.

Subject Categories : Coatings, Colorants and Finishes
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE