硝酸碳酰肼类含能配合物比热容的研究

Specific Heat Capacity of Carbohydrazide Nitric Acid Energetic Coordination Compounds

用差示扫描量热仪(DSC)测定了一定温度区间硝酸碳酰肼类配合物硝酸碳酰肼锰(Mn(CHZ)3(NO3)2)、硝酸碳酰肼钴(Co(CHZ)3(NO3)2)、硝酸碳酰肼镍(Ni(CHZ)3(NO3)2)和硝酸碳酰肼锌(Zn(CHZ)3(NO3)2)的比热容,利用Origin7.0软件回归出比热容随温度变化的方程式,Ni(CHZ)3(NO3)2和Mn(CHZ)3(NO3)2在一些温度区间为六次函数或二、三次函数,其余大多数符合四次或五次函数,拟合时相关度最小为0.987,标准偏差最大为0.017。除Zn(CHZ)3(NO3)2外,其余三种硝酸碳酰肼盐配合物的比热容有较大变化,出现一个或多个峰值。对它们进行了热重和红外分析,200℃时仅Co(CHZ)3(NO3)2失重8.64%,其余两种的热重曲线没有变化;红外图谱显示在不同的温度下同一物质的指纹区不同,故推测样品可能发生了晶形转变而导致比热容变化。

The specific heat capacity of four carbohydrazide nitrate energetic coordination compounds [ M （ CHZ ） 3 ] （ NO3 ） 2, （ M = Mn, Co, Zn, Ni） were determined by differential scanning calorimeter （ DSC ） under a temperature range, and regression equations for the specific heat capacity changing with temperature were obtained by Origin 7.0. The equations of Ni （CHZ）3 （NO3 ）2 and Mn（CHZ） 3 （NO3）2 are functions of sixth degree, second degree and third degree in some range of temperature, equations of the others mostly are functions of fourth degree or fifth degree, where the relative coefficient square is more than 0. 987, and standard deviation is smaller than 0.017. Except Zn（CHZ） 3 （ NO3 ） 2, the specific heat capacity of the compounds changes more, and one or more peaks appear in the curves of the specific heat capacity. TG and FTIR were carried through. At 200 ℃ ,only Co（CHZ）3 （ NO3 ）2 loses 8.64% of its mass. As FTIR spectra are not same at different temperature,it is possible that the crystal transformation results in the change of the specific heat capacity.