【摘要】 采用水-溶液悬浮法,对海因/三嗪类复合键合剂包覆RDX进行了实验研究。通过L9(34)正交实验研究了反应时间、反应温度、键合剂用量和搅拌速度对包覆度的影响规律,并利用X射线光电子能谱(XPS)、扫描电镜(SEM)、傅里叶变换红外光谱(FTIR)、差示扫描量热法(DSC)、感度实验等对包覆后的RDX进行表征。正交实验确定的最佳包覆条件:10 g RDX,反应时间90 min,反应温度50℃,键合剂用量0.3 g,搅拌速度700 r.min-1,包覆度达87%。包覆后RDX表面明亮有光泽,包覆厚度约为0.2μm。红外光谱中NO2基团的吸收峰红移22 cm-1至1510 cm-1,且吸收带展宽。热分解峰温升高0.4℃,撞击感度特性落高提高4.5 cm。更多还原

【Abstract】 RDX was coated with hyantoin/triazines composite bonding agent and the effects of the processing parameters,including reaction time,reaction temperature and bonding agent mass on the coating degree were studied by means of water-solution suspending method in the L9(34) orthogonal experiment.The coated RDX was characterized by X-ray photoelectron spectroscopy(XPS),scanning electron microscope(SEM),Fourier transform infrared spectroscopy(FTIR),differential scanning calorimetry(DSC) and impact sensitivity(H50).The optimum conditions are as follows: 10.0 g RDX,reaction time 90 min,reaction temperature 50 ℃,0.3 g composite bonding agent(CBA),and stirring speed 700 r·min-1.Accordingly,coating degree is up to 87%.It is found that surface of the coated RDX is covered by clear film with a thickness of about 0.2 μm.In FTIR spectra,NO2 group absorption peak has a 22 cm-1 red shift to 1510 cm-1and the absorption band widened.Thermal decomposition peak temperature is enhanced 0.4 ℃.The characteristic height of impact sensitivity(H50) is increased by 4.5 cm.更多还原