J. KIMS Technol Search

CLOSE


Journal of the Korea Institute of Military Science and Technology 2004;7(2):100-108.
A Study on the Nonlinear Viscoelastic Properties of PBXs
Jung-Seob Shim, Hyoun-Soo Kim, Keun-Deuk Lee, Jeong-Kook Kim
Agency for Defense Development
복합화약의 비선형 점탄성 특성 연구
심정섭, 김현수, 이근득, 김정국
국방과학연구소
Abstract
Nitramine-polymer composites suffer from a problem known as dewetting. Dewetting adversely affects the performance and the sensitivity characteristics of an explosive composition. Voids, which are generated between explosive particles and binder on dewetting, act as initiation sites. For a PBXs as well as propellants, where good adhesion and mechanical properties are of great importance, dewetting therefore must be prevented by strong adhesion between the filler and the binder. The surface energy of materials is measured by Wilhelmy plate and wicking method. The interfacial energy between the filler and the binder is calculated from the disperse phase and the polar phase of surface energy. Time dependent compressive properties of composite explosives have been determined by stress-strain curves obtained at different strain rates and temperatures. The interfacial state of the PBX was observed through SEM. It was found from the result that the interface between the explosive and the binder becomes better adhesion with decreasing interfacial tension and increasing work of adhesion. The result clearly shows that the castable PBX has good adhesion more than the pressable PBX.


ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
FOR CONTRIBUTORS
Editorial Office
160 Bugyuseong-daero 488beon-gil, Yuseong-gu, Daejeon 34060, Korea
Tel: +82-42-823-4603    Fax: +82-42-823-4605    E-mail: kimst@kimst.or.kr                

Copyright © 2024 by The Korea Institute of Military Science and Technology.

Developed in M2PI

Close layer
prev next