CDBS和CSA与硝酸铵的相容性和物理作用

Compatibility and Physical Interaction of CDBS and CSA with AN

利用复分解反应制备了硝酸铵 (AN)炸药示踪检测添加剂十二烷基苯磺酸铈 (CDBS)和硬酯酸铈 (CSA)。用元素分析、ICP AES和FT IR表征了CDBS和CSA。DSC和VST法研究结果表明 ,CDBS和CSA与AN是相容的。用SEM、ESCA和FT IR观察了CDBS和CSA与AN的相互作用 ,认为 :固体CDBS和CSA可以自发地分散在AN颗粒表面 ,形成一层憎水膜 ,从而有效地防止AN的吸湿、结块 ,这一过程以物理吸附为特征。

Two tracers used for detecting ammonium nitrate (AN) explosive,cerium (Ⅲ) ndodycylbenzene sulfonate (CDBS) and cerium (Ⅲ) stearate (CSA), are prepared by using double decomposition reaction and characterized by using the elemental analysis,ICPAES and FTIR. The compatibility of CDBS and CSA with AN is tested by DSC and VST. The results show that the mixture of CDBS and CSA with AN is compatible. The interaction of CDBS and CSA with AN is examined by means of SEM, ESCA and FTIR. It is found that CDBS and CSA in solid are spontaneously dispersed on the surface of AN,but the changes of bonding energy of N 1S (NO-3) and N 1S (NH+4) in AN is not beyond 0.5 eV and there are not new functional group absorption peaks in IR spectra of AN containing CBDS or CSA. All these facts show that it is a process of physical adsorption, and the lipophilic layer formed thereof can efficiently decrease the hygroscopicity and caking of AN.