摘要
以高氯酸铵、1,4-二氮杂二环[2.2.2]辛烷、高氯酸为原料制备出了具有分子钙钛矿结构的新型含能材料(H2dabco)[NH4(ClO4)3](DAP,dabco=N(CH2CH2)3N),利用X射线衍射(XRD)、红外光谱(FT-IR)、扫描电子显微镜(SEM)和X射线能谱(EDS)对晶体的结构与形貌进行了表征,采用热重与差示扫描量热法联用(TG-DSC)对DAP与高氯酸铵(AP)的热分解性能进行研究,并采用增重法对二者的吸湿性进行了研究。结果表明,DAP是一种在结构与形貌上不同于AP的新晶体;DAP的放热峰温为385℃,放热量为3157 J·g^-1,与重结晶后的AP相比,放热峰温升高了19℃,放热量增加了2221.9 J·g^-1;测定AP的吸湿率为0.560%,(H2dabco)[NH4(ClO4)3]的吸湿率仅为0.044%,表明该方法有效地降低了AP的吸湿性。
New energetic materials with molecular perovskite structure(H2dabco[NH4(ClO4)3](DAP,dabco=N(CH2CH2)3N)were prepared from ammonium perchlorate,1,4‐diazoxane[2.2.2]octane and perchloricacid,and its crystal structure and morphology were characterized by X‐ray diffraction(XRD),fourier transform infrared spectroscopy(FT‐IR),scanning electron microscope(SEM)and energy dispersive X‐ray spectroscopy(EDS).The thermal decomposition properties of the DAP and AP were studied by thermo gravimetric(TG)and differential scanning calorimetry(DSC).And the hygroscopicity of DAP and AP was measured by weight gain method.Results show that DAP is a new crystal different from AP in structure and morphology.It exhibited the exothermic peak temperature of 385℃and apparent decomposition heat of 3157 J·g^-1.Compared with the AP after the recrystallization,the exothermic peak temperature delayed 19℃,apparent decomposition heat increased by 2221.9 J·g^-1.The hygroscopicity of AP is determined to be 0.560%,while the hygroscopicity of(H2dabco)[NH4(ClO4)3]is only 0.044%,indicating that this method effectively reduce the hygroscopicity of AP.
作者
李宗佑
曹雄
李晓霞
贾琪
张士旗
LI Zong⁃you;CAO Xiong;LI Xiao⁃xia;JIA Qi;ZHANG Shi⁃qi(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2020年第6期539-543,共5页
Chinese Journal of Energetic Materials
关键词
分子钙钛矿
高氯酸铵(AP)
制备
表征
热分析
吸湿性
molecular perovskite
ammonium perchlorate
preparation
characterization
thermal analysis
hygroscopic
