CAJ | 학술논문

为了降低超细高氯酸铵（ AP）的机械感度，以十八烷胺为包覆剂，经气流粉碎工艺，制备了超细AP包覆粒子。通过对超细AP包覆粒子进行粒度分析、SEM分析、DSC分析及感度检测，研究了超细AP包覆粒子的包覆效果、热分解特性及感度特性。试验结果表明：超细AP包覆粒子，粒度为D50＝5．8μm，表面有包覆层存在；超细AP包覆粒子的感度，与超细AP样品相比，当包覆剂质量分数为1％时，撞击感度降低31．2％，摩擦感度降低12．0％；当包覆剂质量分数为3％时，撞击感度降低34．5％，摩擦感度降低22．0％，且包覆剂用量越大，撞击感度和摩擦感度越低；但包覆剂对AP的热分解会产生一定的负面影响，质量分数应≤1％。
위료강저초세고록산안（ AP）적궤계감도，이십팔완알위포복제，경기류분쇄공예，제비료초세AP포복입자。통과대초세AP포복입자진행립도분석、SEM분석、DSC분석급감도검측，연구료초세AP포복입자적포복효과、열분해특성급감도특성。시험결과표명：초세AP포복입자，립도위D50＝5．8μm，표면유포복층존재；초세AP포복입자적감도，여초세AP양품상비，당포복제질량분수위1％시，당격감도강저31．2％，마찰감도강저12．0％；당포복제질량분수위3％시，당격감도강저34．5％，마찰감도강저22．0％，차포복제용량월대，당격감도화마찰감도월저；단포복제대AP적열분해회산생일정적부면영향，질량분수응≤1％。
In order to reduce the mechanical sensitivity of AP superfine powder , octadecylamine was used as the coating agent , and AP-coated superfine particles were prepared by jet mill .The coating effect , thermal decomposition characteristics and sensitivity characteristics of AP-coated superfine particles were studied by particle size analysis , SEM analysis, DSC analysis and sensitivity testing .Experimental results show that particle size of AP-coated superfine particles is D50 =5.8μm, with a coating layer present on the surface .Compared with the pure AP superfine particles , when the mass fraction of coating agent is 1%, the impact sensitivity of AP-coated superfine particles is reduced by 31.2% and friction sensitivity is decreased by 12.0%.While when the mass fraction of coating agent is 3%, the impact sensitivity of AP-coated superfine particles is reduced by 34.5%and friction sensitivity is decreased by 22.0%.In addition, the greater the coated dosage , the lower the impact sensitivity and the friction sensitivity .However , coating agent has some negative impacts on the thermal decomposition of AP , and thus its dosage should be controlled less than 1%( mass fraction ) .