In this paper the distribution of the nitroglycerin (NG) content in the coating of solid double‐base propellant charge during various time at three aging temperatures were found by using thermogravimetric analysis (TG), and the separation and cracking of the coating were observed. The results showed that the differences of NG contents in the coating are significant and are a main reason giving rise to the separation and cracking of the coating. A empiric functional relation of NG content distribution in the coating to the thickness and aging time and temperature was obtained from measured data. On the basis of the NG contents in the boundary layer of the coating contracted with the propellant and times of separation or cracking of the coating. The service life of the charge was predicted.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.