甲基紫试验在长贮火药安定性检测中的应用

Application of Methyl-Violet Test in Storage Stability of Propellants

为确定甲基紫在长贮火药安定性检测中的可靠性,对选定的经过85℃老化试验的单基药、双基药、三基药试样,分别进行134.5℃和120℃甲基紫试验。用化学分析法测定了安定剂的含量,用方差检验法分析了甲基紫试验中的试纸变色时间和发射药中安定剂含量随老化时间的变化关系。结果表明,单基发射药、双基发射药、双基改性推进剂的甲基紫试纸变色时间随老化时间的变化显著,双基推进剂和三基发射药甲基紫变色时间随贮存时间的变化不显著。

In order to determine the reliabitity of methyl-violet test in storage stability determination of preopellant, methyl-violet tests at 134. 5 ℃ and 120℃ are taken respectively for each sample of single-base propellant, double-base propellant and triple base propellant aged at 85℃. The stabilizer content is determined by chemical analysis method. The relationship between the changes of color change time of methyl-violet test paper and stabilizer content in propellants with ageing time are analyzed by variance test. The results show that the relationship between the color change times of methyl-violet test paper with ageing time is obvious for single-base propellant, double-base propellant and modified double-base propellant and not obvious for double-base rocket propellant and tri-base propellant.