AIR DRYING, HIGH TEMPERATURE RESISTANT, SILICONE PROTECTIVE COATINGS
Abstract
Improved high temperature protective coatings primarily for use on high speed Mach 3 aircraft and missiles have been developed which are capable of withstanding the extreme environments and aerodynamic heating. By selectively incorporating aminosilanes as catalysts for curing unmodified polymethylphenyl silicone resins, air dry (ambient temperature), stable coatings with retained reflectances exceeding eighty (80) percent after elevated temperature exposures were developed. Analysis of two years Florida weathering data indicates that these coatings when properly applied to titanium, stainless steel and aluminum alloys have excellent adhesion, corrosion resistance, and are extremely resistant to solar discoloration thus making them excellent candidates for high speed aircraft and missiles. A variety of air dry silicone primer systems were also developed, evaluated for thermal stability and corrosion resistance, and optimized for the best topcoats formulated. Based on the laboratory and Florida weathering results, a silicone-base coating system which will dry under ambient temperature conditions (75 + 2 deg F), and serviceable for use up to 700 deg F for short periods and 600 deg F for prolonged periods has been developed. (Author-PL).
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1968
- Accession Number
- AD0839537
Entities
People
- R. L. Stout
Organizations
- Air Force Research Laboratory