摘要:

AbstractThe synthesis of a new high‐energy compound trans‐1,4,5,8‐tetranitro‐1,4,5,8‐tetraazadecalin is described. The compound has a density of 1.80 g/cm3and a heat of formation of 17.5 kcal/mol. The detonation pressure is calculated to be 310 kbar and the detonation velocity is calculated to be 8.36 mm/μs by the Kamlet Sh

ISSN:0721-3115    

DOI:10.1002/prep.830080302

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

摘要:

AbstractThe oxidation of ethanol as a model of the alcohols produced in the hydrolysis of nitrate esters, by nitric acid in aqueous sulphuric acid solutions has been studied with the aim to obtain information on the decomposition reaction of “spent acids”. The results show, in agreement with previous suggestions from this laboratory, that ethanol is firstly oxidized to acetaldehyde via a reaction initiated by nitric acid but carried on by NO2radical. The latter is formed by the interaction of nitric and nitrous acids. The acetaldehyde is then oxidized by two independent paths leading one to acetic acid and the other to oxalic acid and eventually to CO2. The relevance of these findings on the understanding and on the control of „spent acids”︁ is briefly

ISSN:0721-3115    

DOI:10.1002/prep.830080303

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

摘要:

Abstract1,3,5,5‐Tetranitrohexahydropyrimidine, (1), was synthesized by the oxidative nitrolysis of 1,3‐diisopropyl‐5,5‐dinitrohexahydropyrimidine, (2), with 90% nitric acid. The course of the reaction was influenced by both the n‐alkyl substituents and the nitrolyzing medium. Compound1was synthesized by nitrolysis of N,N‐diisopropyl or dicyclohexyl substituents, while dimethyl, diethyl, or other di‐n‐alkyl substituents yielded ring‐cleaved products3and/or4.Similar effects were observed by varying the nitric acid concentration. The formation of nitramine products, rather than nitrosamine or alkyl amide products that generally result from tertiary amine nitrolysis, is attributed to conformational changes in a postulated nitronium ion‐amine c

ISSN:0721-3115    

DOI:10.1002/prep.830080304

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

摘要:

AbstractThermogravimetric studies were carried out with double base propellants to find out the rate‐determining stage and to understand the mechanism. The decomposition process can be divided into 3 stages as follows: Diffusion of nitroglycerin takes place in the temperature range 120°C–160°C. Two processes occur in the temperature range 170°C–205°C, namely the dissociation of nitroglycerin and the cleavage of the CO bond, the later being the rate‐determining step. The cleavage of the CO bond is followed by a considerable decomposition of

ISSN:0721-3115    

DOI:10.1002/prep.830080305

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

摘要:

AbstractOn the Propagation Laws of Combustion Waves in Solids (Pyrotechnic Reactions)The existing theoretical models accounting for the rate of propagation of combustion waves in solids involve conductive heat transfer. We show that in metal/oxidizer systems, this rate can be recalculated with satisfying accuracy from the thermal diffusivity. The size of the particles strongly effects this property. We suggest to represent the variability of pyrotechnical compositions by a “characteristic curve” which represents the variation of slowness of the combustion wave (v−1) as a function of the reciprocal of heat of reaction (|

ISSN:0721-3115    

DOI:10.1002/prep.830080306

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

摘要:

AbstractA new unstable equimolar adduct of hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine was formed with 6‐hexanolactone (ϵ‐caprolactone). Some properties of the adduct a

ISSN:0721-3115    

DOI:10.1002/prep.830080307

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

摘要:

AbstractThe structure of KDNBF was previously shown to be as in formula(2), Mn+= K+, a Meisenheimer complex of 4,6‐dinitrobenzofurazan‐1‐oxide and potassium hydroxide(3,4,5). The corresponding sodium, silver and barium salts are shown to have identical molecular structure to KDNBF on the basis of IR and NMR spectral data. Explosive properties of the four salts were determined. The barium salt is substantially less sensitive to thermal, electrostatic and mechanical stimulae relative to the other three

ISSN:0721-3115    

DOI:10.1002/prep.830080308

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

摘要:

AbstractThe nitrogen analyzer method described here is an excellent alternate to the currently acceptable procedures for percent nitrogen in ball powder. It offers the advantages of greatly reduced analysis time, negligible exposure to mercury, minimum exposure to nitrocellulose, no exposure to sulfuric acid and toxic oxides of nitrogen gases. Analyzer method is currently used for ball powder, but experimental work is continuing on other propellants, nitroglycerin, and nitrating acids. The authors propose this method be accepted as an alternate method for nitrogen content in ball powder.

ISSN:0721-3115    

DOI:10.1002/prep.830080309

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.830080310

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.830080311

出版商:WILEY‐VCH Verlag GmbH    

年代:1983

数据来源: WILEY