Influence of Polyglycidyl-type Bonding Agents on the Viscoelastic Properties of a Carboxyl-terminated Poly(butadiene-co-acrylonitrilе)-based Composite Rocket Propellant

• Autorzy: Brzić S. , Dimić M. , Jelisavac L. , Djonlagić J. , Ušćumlić G. , Bogdanov J.
• Języki publikacji: EN

Abstrakty

EN

In the present study, functionally substituted bonding agents (triglycidyl isocyanurate and diglycidyl dimethylhydantoin) were incorporated into a composite propellant formulation based on carboxyl-terminated poly(butadiene-co-acrylonitrilе) and ammonium perchlorate. Bonding agents are an important component of a composite propellant, making up to 0.5 wt.% of the formulation. They affect processing, mechanical properties, ballistics, ageing and the characteristics of insensitive munition (IM) propellants. All of the testing has been done using an unmetallized propellant formulation (80 wt.% bimodal ammonium perchlorate and 20 wt.% binder). The focus has been on the mechanical properties of the propellant, as influenced by the presence of these bonding agents. Mechanical uniaxial tensile tests were accompanied by a dynamic mechanical analysis (DMA) over a wide range of temperatures. The storage modulus, loss modulus, loss factor and glass transition temperature for each propellant sample have been evaluated. The network characteristics, such as sol-gel content and crosslink density have been calculated and successfully correlated with the mechanical properties. The dynamic mechanical studies showed that the content of the bonding agent did not influence the glass transition temperature; however, the loss factor was shown to be a function of the crosslink density.

Słowa kluczowe

EN

composite propellant; carboxyl-terminated poly(butadiene-coacrylonitrilе); dynamic mechanical analysis; viscoelastic properties

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2015
• Tom: Vol. 12, no. 2
• Strony: 307--321
• Opis fizyczny: Bibliogr. 32 poz., rys., tab.

Twórcy

autor

Brzić S.

• Military Technical Institute, Ministry of Defence, Ratka Resanovića 1, 11 030 Belgrade, Republic of Serbia

autor

Dimić M.

• Military Technical Institute, Ministry of Defence, Ratka Resanovića 1, 11 030 Belgrade, Republic of Serbia

autor

Jelisavac L.

• Military Technical Institute, Ministry of Defence, Ratka Resanovića 1, 11 030 Belgrade, Republic of Serbia

autor

Djonlagić J.

• Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, POB 3503, 11120 Belgrade, Republic of Serbia

autor

Ušćumlić G.

• Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, POB 3503, 11120 Belgrade, Republic of Serbia

autor

Bogdanov J.

• Military Academy, University of Defence, General Pavle Jurišić-Šturm 33, 11000 Belgrade, Republic of Serbia

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