【摘要】 <正> 扭辫分析方法(简称TBA)是六十年代出现的一种动态力学性能试验方法。本文利用TBA法研究了纤维素硝酸酯与丙三醇三硝酸酯(NC-NG)和纤维素硝酸酯与硝化三乙二醇(NC-TEGDN)两种塑溶胶体系的固化过程。得到了这两种体系的动态力学谱图,并作出了NC-NG固化过程的三T状态图,为固化过程工艺条件选择提供了理论依据。由研究结果发现,纤维素三硝酸酯在增塑剂中的物理固化过程有着与热固性树脂相类似的固化现象,即有明显的物理凝胶和玻璃化现象。而且物理凝胶时间与温度的关系符合凝胶反应动力学规律。更多还原

【Abstract】 The curing processes of NC-NG (Nitrocellulose-Nitroglycerin and NC-TEGDN (Nitrocellulose-Diethylene Glycol Dinitrate) systems were investigated by using TBA, It is seen from the obtained Time-Temperature-Transformation diagama that two different curing stages are existed and three different states are covered. The kinetic treatments of the gelation time and temperature curve give a good result in agreement with the Arrhenius equation. Its is shown that the physical curing process of NC follows certain rules which will help reveal the essence of this transition process.更多还原