New Pyrotechnic Binders
Abstract
Low-cost liquid polymers of high oxygen content (more than 45%) were developed for use as binders in castable pyrotechnic formulations. Three polymer systems were selected for study: a polyester, a polycarbonate, and copolymers of acrylate esters with vinyl acetate. The copolymer approach yielded only taffy- like solids and was abandoned. Liquid products were obtained from both the polyester and polycarbonate systems. Curing behavior of the polymers and crosslinking agents was evaluated as well as the mechanical properties of the cured material. Compatibility of the polymers with pyrotechnic formulations was evaluated in vacuum stability tests at 70C. Less than 1.1 cc of gas was generated per gram of composition in 48 hr, representing a high degree of compatibility. At 140 F, all formulations were castable regardless of the polymer viscosity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1973
- Accession Number
- AD0910430
Entities
People
- C. L. Hamermesh
- E. F. Witucki