Development of Rain-Erosion-Resistant Coatings for High-Speed Aircraft
Abstract
A polymer prepared as a prospective rain- erosion-resistant coating from hexafluoroacetone, propylene, and bis(dimethylamino)-dimethylsilane had a glass-transition temperature of -50 C, and it had good resistance to heat and aliphatic or aromatic hydrocarbons. However, it was not successfully cured to an elastomer. A polymer prepared from 1,4-bis(dimethylhydroxysilyl) benzene and bis(dimethylamino)dimethylsilane had a glass-transition temperature of 62 C, excellent thermal stability, but less resistance to hydrocarbons than the fluoropolymer. It was cured to a tough elastomer at room temperature. The coating obtained when this elastomer was sprayed onto air-foil test specimens was found to have much greater resistance to simulated rain erosion at ordinary temperatures than a silicone coating and slightly less than neoprene. It suffered no degradation on being heated 4 hours at 250 C, as indicated by sand-erosion tests.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1971
- Accession Number
- AD0727750
Entities
People
- A. C. Tanquary
- M. V. Jackson
- Robert E. Jr. Burks
Organizations
- Southern Research