HMX的高压拉曼光谱研究  

Raman spectra study of HMX under high pressure

作　　者：周静 苏海鹏[2] 刘宁[2] 刘影 ZHOU Jing;SU Hai-peng;LIU Ning;LIU Ying(School of Arts and Sciences,Shanxi University of Science&Technology,Xi′an 710021,China;Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)

机构地区：[1]陕西科技大学文理学院,陕西西安710021 [2]西安近代化学研究所,陕西西安710065

出　　处：《陕西科技大学学报》2020年第5期173-178,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(11904281);陕西省教育厅专项科研计划项目(19JK0129);西安近代化学研究所开放合作创新基金项目(SYJJ13)。

摘　　要：1,3,5,7-四硝基-1,3,5,7-四氮杂环辛烷(HMX)是一种广泛应用的含能材料.为了更充分地了解HMX分子稳定性以及能量性能与结构的关系,研究压力下HMX的晶体结构相变过程,利用金刚石对顶砧装置,在常温下研究了β-HMX原位高压拉曼光谱特性,实验最高压力50 GPa.研究结果表明,HMX在研究压力范围内发生了四次相变,即:4.5 GPa(ζ-HMX)、11.7 GPa(ε-HMX)、17.1 GPa(φ-HMX)、25.7 GPa(η-HMX),压力下的相变可能与C 4N 4环的畸变和-NO 2的构型转变有关.卸压实验表明,β-HMX晶体在研究压力范围内相变过程是可逆的.Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine(HMX)is one of the widely used energetic materials.For further understanding the relationship between molecule stability,energy properties and crystal structure,systemically investigating the phase transitions of crystal HMX under high pressure,In-situ Raman spectra ofβ-HMX under high pressure up to 50 GPa was studied using diamond anvil cell at room temperature.The results show thatβ-HMX undergoes four phase transitions emerge around 4.5 GPa(ζ-HMX),11.7 GPa(ε-HMX),17.1 GPa(φ-HMX),25.7 GPa(η-HMX).These transitions are proposed to be associated with the distortion of the C 4N 4 ring and the rearrangements of NO2 outside the ring.The phase transitions are reversible,as the Raman transformed back to the initial profile during the pressure releasing.

关 键 词：HMX 含能材料 高压 拉曼光谱 

分 类 号：O52[理学—高压高温物理]