The Chemistry of Explosives

Oxley, Jimmie C.

doi:10.1007/978-1-4612-0589-0_5

Cited by 20 publications

(17 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…"Oxygen balance" is a parameter that tells us whether the oxygen atoms present in the molecule of an explosive are sufficient or insufficient for complete oxidation of the fuel elements like carbon and hydrogen [24]. The percentage excess or deficit of oxygen present in a compound required for its complete oxidation to CO 2 , H 2 O, etc.…”

Section: Oxygen Balance (Ob)mentioning

confidence: 99%

Prediction of heat of formation and related parameters of high energy materials

Muthurajan

Sivabalan

Talawar

et al. 2006

Journal of Hazardous Materials

View full text Add to dashboard Cite

Section: Oxygen Balance (Ob)mentioning

confidence: 99%

Prediction of heat of formation and related parameters of high energy materials

Muthurajan

Sivabalan

Talawar

et al. 2006

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…8 can be rationalized in terms of oxygen balance: the surplus or deficit of oxygen, as weight percent, resulting from the complete combustion of each of the polymers to produce CO 2 and H 2 O (and N 2 , in the case of GAP). 35 The monomers of PE, POM, and GAP possess negative oxygen balance (À343%, À107%, and À121%, respectively), which accounts for their significantly better performance under ambient O 2 ; indeed, the status of PE as a pure fuel without any embodied oxygen enables a much larger maximal energy release in the reactive environment (cf. Table I) than for either of the other polymers.…”

Section: B Shock Wave Analysismentioning

confidence: 99%

Imaging spectroscopy of polymer ablation plasmas for laser propulsion applications

Jiao

Truscott

Líu

et al. 2017

Journal of Applied Physics

View full text Add to dashboard Cite

A number of polymers have been proposed for use as propellants in space launch and thruster applications based on laser ablation, although few prior studies have either evaluated their performance at background pressures representative of the upper atmosphere or investigated interactions with ambient gases other than air. Here, we use spatially and temporally resolved optical emission spectroscopy to compare three polymers, poly(ethylene), poly(oxymethylene), and glycidyl azide polymer, ablated using a 532 nm, nanosecond pulsed laser under Ar and O2 at pressures below 1 Torr. Emission lines from neutrally and positively charged atoms are observed in each case, along with the recombination radiation at the interaction front between the plasma plume and the background gas. C2 radicals arise either as a direct fragmentation product or by a three-body recombination of C atoms, depending on the structure of the polymer backbone, and exhibit a rotational temperature of ≈5000 K. The Sedov–Taylor point blast model is used to infer the energy release relative to the incident laser energy, which for all polymers is greater in the presence of O2, as to be expected based on their negative oxygen balance. Under Ar, plume confinement is seen to enhance the self-reactivity of the ejecta from poly(oxymethylene) and glycidyl azide polymer, with maximum exothermicity close to 0.5 Torr. However, little advantage of the latter, widely considered one of the most promising energetic polymers, is apparent under the present conditions over the former, a common engineering plastic.

show abstract

“…[9][10][11][12] As substâncias classificadas como explosivos possuem, em geral, na sua composição, nitrogênio, oxigênio e/ou outros oxidantes. 2 O oxigênio e o nitrogênio costumam estar associados. Algumas substâncias fogem a essa regra como é o caso da azida de chumbo e alguns compostos nitrogenados que não contêm oxigênio.…”

Section: Explosivo Químicounclassified

“…O explosivo secundário é mais estável, não podendo ser detonado com calor e impacto, entretanto possui maior capacidade de gerar dano, sendo denominado alto explosivo. 2,15 Em função destas características, o explosivo primá-rio é utilizado para iniciar a detonação do explosivo secundário, formando assim o trem explosivo. 9,16 A onda de choque formada pela detonação do explosivo primário é que gera a detonação do explosivo secundário.…”

Section: Explosivo Químicounclassified