Sciencemadness Discussion Board

Calculate the detonation parameters of ENTA

guangdianlou208 - 4-4-2010 at 20:31

1,1-(N,N-ethylenedinitramino)-3,3,5,5-tetraazidocyclotriphosphazene（ENTA） is novel energetic material .ENTA has been tested for medium caliber stab detonators by SERDP PROJECT. Text

I want to calculate the detonation parameters(detonation velocity、pressure、heat、temperature。etc.) of ENTA.

BUT,WHAT'S the reaction equation of detonation???

ENTA contains phosphorus element !!! It's different from

common explosives that just contains C、H、O、N、elements

what's the final substance of phosphorus after detonation???

which is the right formula for calculating ENTA ???


It's VERY valuable to calculate the detonation parameters of ENTA

and ,the density、melting point、oxygen balance is not clear

can we discuss? can you give me some literatures about
above ?

my e-mail: hncldaha@yahoo.cn



未命名enta.bmp - 287kB

The_Davster - 4-4-2010 at 23:00

Calculation of detonation parameters for non CHNO explosives is non-trivial. I do not think the most advanced software out there can do phosphorus containing yet.

Of course, once the programs become available, having a density and a heat of formation is necessary.

But chances are, if it is being considered for stab ignitors, that VOD, det press, etc are unimportant here. I would not expect performance over much above 8000 m/s, if it reaches that. Phosphorus is hardly energetic, and azides usually mostly have primarily a sensitizing effect, without significantly boosting VOD.

No one is going to email you.

guangdianlou208 - 5-4-2010 at 04:36

Quote: Originally posted by The_Davster  
Calculation of detonation parameters for non CHNO explosives is non-trivial. I do not think the most advanced software out there can do phosphorus containing yet.

Of course, once the programs become available, having a density and a heat of formation is necessary.

But chances are, if it is being considered for stab ignitors, that VOD, det press, etc are unimportant here. I would not expect performance over much above 8000 m/s, if it reaches that. Phosphorus is hardly energetic, and azides usually mostly have primarily a sensitizing effect, without significantly boosting VOD.

No one is going to email you.



Do you mean it's no significance to calculate???

We don't calculate the detonation parameters of primary explosives?

[Edited on 5-4-2010 by guangdianlou208]

hissingnoise - 5-4-2010 at 04:51

A stab-ignitor is normally expected to produce a hot flame to ignite a propellant.
The material used doesn't work as a primary explosive. . .


guangdianlou208 - 6-4-2010 at 05:06

C2H2O4N19P3—2CO+2H2O+19/2N2+3P

According the Brinkley-Wilson, I draw this formula, is it right?

hissingnoise - 6-4-2010 at 06:26

Sorry guangdianlou208, I now see that ENTA is being considered as a green alternative to Pb(N3)2.
Your products look correct, assuming that P doesn't compete with carbon and hydrogen for oxygen.
But as The_Davster said, phosphorus will likely limit power and VoD somewhat.
It would probably though, have more power than Pb(N3)2.



[Edited on 6-4-2010 by hissingnoise]