Effect of High Energy Materials on Sensitivity of Composite Modified Double Base CMDB Propellant System

• Published in: Defense science journal Vol. 42; no. 4; pp. 253 - 257
• Main Authors: Choudhari, M.K., Dhar, S.S., Shrotri, P.G., Singh, Haridwar
• Format: Journal Article
• Language: English
• Published: New Delhi Defence Scientific Information & Documentation Centre 01.07.1992
• ISSN: 0011-748X; 0976-464X
• DOI: 10.14429/dsj.42.4393

The shock sensitivities (viz, impact and friction) of composite modified double-base (CMBD) ingredients, double-base (DB) matrix (SNC:CL) and the effect of high energy materials like ammonium perchlorate (AP), cyclotrimethylene trinitramine(RDX), cyclotetramethylene tetranitramine (HMX) and pentaerythritol tetranitrate (PTN) on a CMDB system, have been studied. Individual ingredients of DB matrix, i.e., spheroidal nitrocellulose (SNC) and desensitised nitroglycerine (casting liquid (CL), do not appear to be very sensitive to impact and friction, impact of 36.0 kg each. Various DB mixtures gave impact ranging between 56.5 to 61.5 cm and friction insensitivity of 36.0 kg for all the formulations. But addition of AP to DB matrix increases the impact and friction sensitivity tremendously, impact ranging from 15 to 24 cm and friction from 2.0 to 3.2 kg. Sensitivity-wise addition of RDX, HMX, and PETN to DB matrix follows AP while the addition of Al slightly reduces the sensitivity.