Accession Number:

AD0839537

Title:

AIR DRYING, HIGH TEMPERATURE RESISTANT, SILICONE PROTECTIVE COATINGS

Descriptive Note:

Rept. for Jul 1962-Oct 1967

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Stout, R. L.

Report Date:

1968-04-01

Pagination or Media Count:

109.0

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.

Descriptors:

• *PLASTIC COATINGS
• *AIRCRAFT FINISHES
• *SILICONE PLASTICS
• AGING(MATERIALS)
• ALUMINUM ALLOYS
• ADHESION
• STAINLESS STEEL
• THERMAL STABILITY
• CORROSION RESISTANCE
• SILANES
• AIRFRAMES
• DISCOLORATION
• HEAT RESISTANT PLASTICS
• ENVIRONMENTAL TESTS
• CURING AGENTS
• REFLECTIVITY
• PIGMENTS
• DRYING
• TITANIUM ALLOYS

Subject Categories:

• Coatings, Colorants and Finishes
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE