BONDING OF REPRESENTATIVE LINERS TO MARAGING STEEL,
Abstract
The bonding characteristics of representative liners for carboxyl-terminated polybutadiene (CTPB), cast double-base (CDB), polyurethane (PU) and NF propellants to maraging steel were evaluated in peel and tensile tests. The surface of the maraging steel was tested in the very smooth, as-produced condition, and after having been roughened slightly by a mild sandblast treatment. Comparison tests were made with sandblasted mild steel and stainless steel specimens. The CTPB propellant liner showed no difference in its bonding characteristics between maraging steel and the comparison steels. In all tests the bond was stronger than the tensile or tear strength of the liner. The other three liners showed very good bonding to the comparison steels, but gave inconsistent results with the maraging steel specimens. The NF propellant liner, an asbestos-filled polyester resin, did not bond to the smooth, untreated surface of the maraging steel, but did bond to the roughened, sandblasted surface. The liners for CDB and PU propellants gave significantly lower peel torques with maraging steel, regardless of surface condition, than obtained for the comparison steels. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 17, 1967
- Accession Number
- AD0812090
Entities
People
- B. L. Thompson