Naslov
Initial stage decomposition kinetics of nitrocellulose propellant

Autori
Rajić Linarić, Maša ; Sućeska, Muhamed ; Matečić Mušanić, Sanja ; Čuljak, Ružica

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 7th Seminar on New Trends in Research of Energetic Materials / Jiri Vagenkneeht - Pardubice : University of Pardubice, 2004, 634-642

Skup
Seminar on New Trends in Research of Energetic Materials (7 ; 2004)

Mjesto i datum
Pardubice, Češka Republika, 20.04.2004. - 22.04.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
nitrocellulose propellants; kinetics; decomposition; activation energy

Sažetak
A thermal decomposition reaction in nitrocellulose, which is the basic component of homogeneous propellants, limits the safe use and safe storage time of propellants. Under certain conditions the decomposition may lead to the well-known phenomenon of self-ignition. In order to be able predict the shelf-life and thermal hazard potential of propellants it is of vital importance to know a true decomposition mechanism and true vales of kinetic constants. In this work we have studied decomposition kinetics of nitrocellulose propellant during the initial decomposition stage (up to 2% mass loss) at elevated temperatures ranging from 80 to 100 oC. The kinetic results were derived from sample mass loss-time/temperature. It was found out that the activation energy for this decomposition stage equals 123.4 kJ/mol, and pre-exponential factor 1.78×106 1/s. Also, it was found out, on the basis of the kinetic data obtained, that the reaction rate accelerating factor changes with temperature - from ~3 at 90-100 oC temperature range to about 5.5 at the room temperatures.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA