Effect of components on the curing of glycidyl azide polymer spherical propellant through rheological method.

Abstract:

:We have conducted a novel study of the influence of energy components (RDX, AP and CL-20) on curing kinetics of glycidyl azide polymer (GAP) spherical propellant based on rheological method. The autocatalytic model was used to describe curing kinetics and the parameters were determined by the model-fitting method. It was found that the incorporation of components hinders the cross-linking reaction of GAP spherical propellant. Integral isoconversional method was used on rheological kinetics to investigate the changes of the activation energy and we confirmed that the incorporation of components increased the activation energy. It was also found that such components had no effect on the trend of activation energy curves but shrank the peak value at a = 0.2. Dynamic mechanical analysis (DMA) showed the differences between pure curing system and its components. These findings are potentially helpful to control the curing effectively and optimize the processing schedules. The addition of components decreased α translation temperature which means the reduction in cross-links. The differences in the values of loss factor tan δ and β translation showed that pure curing system has lower resistance for side chain to motion.

journal_name

R Soc Open Sci

authors

He L,He W,Ma Z

doi

10.1098/rsos.181282

subject

Has Abstract

pub_date

2018-10-24 00:00:00

pages

181282

issue

10

issn

2054-5703

pii

rsos181282

journal_volume

5

pub_type

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