DNTF/PETN体系的二元相图及低共熔物

The Binary Phase Diagram and Eutectic System for DNTF/PETN

用压力DSC研究了新型高能量密度材料3,4-二硝基呋咱基氧化呋咱(DNTF)与季戊四醇四硝酸酯(PETN)形成的二元混合体系的液化及熔融过程,根据不同质量比混合体系的DSC特征量数据建立了液化温度T与组成X的T-X相图、熔融焓H与组成X的H-X相图,研究了DNTF与PETN形成的二元低共熔体系,结果表明,从T-X相图获得DNTF/PETN体系的低共熔物组成为68.20/31.80(摩尔百分比),从H-X相图获得DNTF/PETN体系的低共熔物组成为67.93/32.07(摩尔百分比),DNTF/PETN体系二元低共熔温度为95.7℃。

The liquefying and melting processes of the binary mixed system consisting of a new type of high energy density materials 3,4-dinitrofurazanfuroxan （DNTF） and pentaerythritol （PETN） were studied by pressure differential scanning calorimetry （PDSC）. On the basis of PDSC characteristic values of DNTF/PETN systems with various mass ratios, the phase diagrams of liquefying temperature （T） versus composition （X） and apparent fusion heat （H） versus composition （X） were constructed. Results show that the compositions of the eutectic system of DNTF/PETN are obtained to be 68.20/31.80 （molar fraction） from the T-X phase diagram, and to be 67.93/32.07 （molar fraction） from the H-X phase diagram, respectively. The eutectic temperature is measured to be 95.7 ℃ by PDSC.