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用ＤＤＶＶＩＩＥＡ动态粘弹谱仪对单基、双基、硝胺和硝基胍四种发射药的β次级转变进行了研究，发现四种发射药都存在明显的β次级转变峰。与单基火药相比，双基火药在β次级转变时的ｔａｎδ峰值明显增加，而硝胺和硝基胍发射药在β次级转变时的ｔａｎδ峰值减小，实验频率对β次级转变时ｔａｎδ峰值的影响不大。对硝胺和硝基胍两种发射药老化过程中β次级转变的研究表明：硝胺发射药的β次级转变时的ｔａｎδ峰值大于硝基胍发射药，老化以后，两种发射药的β次级转变时的ｔａｎδ峰值降低，前者的下降速度大于后者，约６００ｈ后，两种发射药的β次级转变时的ｔａｎδ峰值已基本接近。最后，对β次级转变与冲击断裂性能的关系进行了讨论
The DDVVIIEA dynamic viscoelastic spectrometer was used to study the β-sub-transitions of four propellants, monomeric, bidentate, nitramine and nitroguanidine. It was found that there were obvious β secondary transitions peak. Compared with the single-base powder, the tanδ peak of the double-base gunpowder significantly increased at the β-sub-transition, whereas the peak of tanδ at the β-sub-transition of the nitroamine and the nitroguanidine propellants decreased. When the peak tanδ little effect. Studies on β-subversion in the aging process of two propellant amines and nitroguanidine show that the tanδ peak of β-subunit of nitramine propellants is greater than that of nitroguanidine propellants, and the aging of both propellants The peak value of tanδ at β secondary transformation decreases, while the former decreases at a faster rate than the latter. After about 600h, the tanδ peak at β secondary transformation of the two propellants has been basically close. Finally, the relationship between β secondary transformation and impact fracture properties is discussed