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Studies on Burn Rate of Polyvinylnitrate and Effect of Modifiers
Author(s) -
Mishra S. C.,
Durgapal U. C.,
Pant Jyotsna,
Dutta P. K.
Publication year - 1995
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19950200306
Subject(s) - lead (geology) , stearate , gallate , chemistry , materials science , nuclear chemistry , organic chemistry , geology , geomorphology
Burn rates of polyvinylnitrate (PVN) without and with addition of 1% by weight of ballistic modifiers, viz. carbon black, lead stearate, lead gallate and lead salicylate, have been determined at different pressures ranging form 10 kg/cm 2 to 85 kg/cm 2 . The burn rate data show deviations from the standard ballistic equations r = a + bp and r = ap n . Nearly plateau burning effect is shown, at lower pressure range, by gelatinized PVN, PVN + 1% lead stearate and PVN + 1% lead gallate, whereas mesa burning is shown by PVN + 1% lead gallate (at p = 40 – 50 kg/cm 2 ) and PVN + 1% lead stearate (at p = 70 to 74 kg/cm 2 ).