NEW POLYMER RESEARCH AND DEVELOPMENT PROGRAM.
NAVAL AIR ENGINEERING CENTER PHILADELPHIA PA AERONAUTICAL MATERIALS LAB
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Studies on poly metal phosphinate and silicone-carborane SiB polymers were directed toward the development of antistatic compositions high temperature and fluid resistant elastomers and aircraft protective coatings and multipurpose thickeners for high temperature greases. Potential exists for obtaining materials with -100 to 800F service capability. Water repellent, transparent hydroxyaquochromium methylphenylphosphinate antistatic coatings were produced which approached practical performance requirements. A hydroxyaquochromium methylphenylphosphinate-dioctylphosphinate copolymer thickening agent with E.P. properties successfully formed silicone, diester and polyester greases. New fluorocarbon phosphinic acid intermediates were synthesized directed toward improving the metal phosphinate polymer thermal stability and fuel resistance. A new series of flexible to rigid crosslinked chromium phosphinate polymers m.p. 500C were produced which may provide the basis for high temperature aircraft coatings. Limited studies on the silicone-carborane SiB elastomer family compounded with antioxidants indicate outstanding thermal stability in the 700 - 900F range. Improvement in physical strength is needed.
- Polymer Chemistry
- Coatings, Colorants and Finishes
- Lubricants and Hydraulic Fluids
- Elastomers and Rubber