Synthesis of Energetic Single Phase and Multi-Phase Polymers
Abstract
Investigation of the synthesis of polyformals from fluoro- and nitrodiols was continued at a low level. The synthesis of 3,5,5,11,11,13- hexanitro-3,13-diaza-7,9 dioxapentadecane-1,15,-diol polyformal, a high energy nitro polymer for use in cast-curable binders, was completed. A new fluoropolyformal was prepared from 3M fluoropolyether diol L-9939. One pound of 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyformal was prepared for evaluation in pyrotechnic formulations. A series of copolyformals was prepared from nitrodiols and fluorodiols with the objective to obtain energetic prepolymers with low T sub G useful as cast-curable binder and as energetic soft blocks for thermoplastic-elastomeric (TPE) block copolymers. Several of the new polymers appear to meet this goal, based on qualitative observation of their properties. A copolymer of 2,2,3,3,4,4,5,5- octafluorohexane-1,6-diol and 3-nitrazapentane-1,5-diol may be useful as a replacement for hexafluoropentanediol polyformal (FPF-1) in cast-curable binder applications. A second copolymer in bis (hydroxyethyl)orthocarborane, with octafluorohexanediol, was prepared. The synthesis of a series of acid chloride- terminated polyesters from fluoro- and nitrodiols and 4,4-dinitropimeloyl chloride and malonyl chloride, respectively, and their reaction with monomeric and polymeric diols to form (AB)N block copolymer was investigated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1988
- Accession Number
- ADA198431
Entities
People
- D. A. Cichra
- H. G. Adolph
- J. M. Goldwasser
- L. A. Nock
- M. Chaykovsky
Organizations
- Naval Surface Warfare Center