Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 80.00K | Year: 2012
The energetic material community has a need to produce energetic materials in varying particle sizes and morphologies. Control of particle and morphology allows the formulator to investigate various aspects of processing and performance associated with the energetic material. Unfortunately, recrystallization of energetic materials to achieve the desired physical characteristics can prove to be a challenge. Some classes of energetic materials show little or no solubility in any traditional solvents; others have limited solubility in solvents predicted to demonstrate favorable morphology. The challenge is identifying solvents that provide sufficient solubility for crystallization while producing a favorable morphology. It is proposed that innovative models and experimental methods be developed to identify novel solvents for specific energetic molecule crystallizations. The models will predict the solvent systems suitable for specific materials resulting in desired morphology.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 79.97K | Year: 2012
NALAS proposes to address the challenge for novel fluorine-containing propellant components with a 3-fold approach: 1. Synthesize a fluorinated analog of BTTN as novel fluorinated plasticizer. 2. Prepare fluorinated analogs of hydroxyl-terminated polybutadiene (HTPB). 3. Prepare a novel fluorinated energetic polymer via the functionalization of polyepichlorohydrin (PECH-triol) with the fluorodinitroethanol (FDNE) motif. NALAS believes that this approach will enable direct comparison of the properties with materials that are well-established in the energetic community. Fluoro-BTTN and fluorinated HTPB have the potential to offer the desired benefits while conserving the physical properties of the original compounds. In parallel, a novel energetic polymer containing fluorine atoms has never been prepared to our knowledge and could offer promising properties and spur further research in this field.
NALAS Engineering Services Inc. | Date: 2015-03-31
A cocrystal of CL-20 (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane) and DNMT (1-methyl-3,5-dinitro-1,2,4-triazole) was formed through a resonant acoustic mixing process. The resulting cocrystal comprised an essentially 1:1 stoichiometric ratio between these coformers. The cocrystal advantageously has decreased sensitivity when compared with a pure CL-20 sample, and maintains thermal stability and comparable energetic performance.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 149.97K | Year: 2014
The treatment of glyoxal with benzyl amine or allyl amine towards the formation of the corresponding tetraazaisowurtzitane cage structure has established a cornerstone in the preparation of caged nitramines and has led to significant research aimed at converting these precursors into compounds of interest such as CL-20. Although a route based on benzyl amine was briefly employed in small commercial settings, severe problems have since forbid the use of this chemistry on large scale. An alternative route to CL-20 employing allyl amine as the ammonia surrogate has been developed and demonstrated by researchers at China Lake. Although these efforts have led to the validation of the chemistry at a lab scale, this sequence of reactions has shown potential to become commercially viable if given a thorough development and evaluation effort, which is the main focus of the proposed work.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 149.93K | Year: 2014
Preparation of caged nitramines has led to significant research aimed at converting these precursors into compounds of interests such as CL-20. This unique ability highlights the fine balance required from electronic and steric contributions in the formation of the cage structure. We propose to develop a low-cost alternative synthesis of CL-20 based on gaining insight as to the nature of this fine balance.