Preparation and Thermal Stability Analysis of Nitrocellulose Gels

ZHANG Xiang, HUANG Zhen-ya, PAN Sheng, HU Xiang-ming, XU Jun, BAI Yu-qi

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    Published By: Chinese Journal of Explosives & Propellants

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Chinese Journal of Explosives & Propellants ›› 2018, Vol. 41 ›› Issue (3) : 256-260,266. DOI: 10.14077/j.issn.1007-7812.2018.03.007

Preparation and Thermal Stability Analysis of Nitrocellulose Gels

  • ZHANG Xiang, HUANG Zhen-ya, PAN Sheng, HU Xiang-ming, XU Jun, BAI Yu-qi
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Abstract

New nitrocellulose gels were prepared by using tetraethyl titanate, aluminum isopropoxide and tetramethyl orthosilicate as crosslinking agents. The generation and its activity point of crosslinking reaction for nitrocellulose gels were verified by the solubility experiment and the control variable experiment.The chemical structures of the gels were characterized by a Fourier transform infrared spectrometer (FTIR) and the morphologies were observed by a digital microscope. The performance of gel carrier fluid was characterized by a drying experiment. Thermal stability of the gels were analyzed using thermogravimetric analyzer (TG) and differential scanning calorimeter (DSC). The results show that the three kinds of crosslinking agents can react with nitrocellulose to form a gel. The crosslinking agent and unesterified hydroxyl occurs the transesterification. The tetraethyl titanate/aluminum isopropoxide/nitrocellulose gel capsules are well developed with strong performance of the carrier liquid. Compared with pure nitrocellulose, the first decomposition temperature of organic titanium/nitrocellulose gel shifts 54.3℃ downwards. No change in the exothermic peak temperature of the organic silicon/nitrocellulose gel is observed. The initial decomposition temperature of organic aluminum/nitrocellulose gel is increased by 8.7℃.

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material science / nitrocellulose gel / transesterification / thermal stability / crosslinker / liquid carrier performance

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ZHANG Xiang, HUANG Zhen-ya, PAN Sheng, HU Xiang-ming, XU Jun, BAI Yu-qi. Preparation and Thermal Stability Analysis of Nitrocellulose Gels. Chinese Journal of Explosives & Propellants. 2018, 41(3): 256-260,266 https://doi.org/10.14077/j.issn.1007-7812.2018.03.007

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