Development of Thermally Stable Poly(Fluoroalkoxyphosphazene) Transmission Seals for the UH-1 Helicopter.
Abstract
716042AMMRCCTR-73-41*Transmissions(Mechanics), *Helicopters, *Phosphazene, Seals, Fluorine compounds, Organic compounds, Elastomers, Lubricants, Synthesis(Chemistry), Abrasion resistance, Formulations, VulcanizatesVulcanized elastomers, UH-1 aircraft, H-1 aircraft, Poly(nitrilo-phosphoranylylidene)The objective of this program was to develop poly(fluoroalkoxyphosphazene) compounds suitable for service (1100 hrs.) as UH-1 helicopter transmission shaft lip seals over the -65F to 230F range. Significant advances were made in compounding ((CF3CH2O)2PN-(HCF2C3F6CH2O)2PN)n copolymers to meet these objectives. Dynamic tests by National Seal Division of Federal-Mogul Corp. of molded ((CF3CH2O)2PN-(HCF2C3F6CH2O)2PN)n seal formations determined the seals to have over 1000 hours running life. These test results provide promising evidence of the suitability of poly(fluoroalkoxyphosphazenes) for service as UH-1 helicopter transmission seals. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1973
- Accession Number
- AD0773652
Entities
People
- John C. Vicic
- Kennard A. Reynard
- Richard W. Sicka
- Selwyn H. Rose