含能材料
含能材料
함능재료
ENERGETIC MATERIALS
2014年
5期
698-701
,共4页
沈立晋%马爱娥%汪旭光%汪平
瀋立晉%馬愛娥%汪旭光%汪平
침립진%마애아%왕욱광%왕평
分析化学%硝酸铵%非爆炸且不可还原农用硝酸铵%热分析%热稳定性
分析化學%硝痠銨%非爆炸且不可還原農用硝痠銨%熱分析%熱穩定性
분석화학%초산안%비폭작차불가환원농용초산안%열분석%열은정성
analytical chemistry%ammonium nitrate%non-explosive and irrestorable fertilizer-grade ammonium nitrate%thermal analysis%thermal stability
为分析、比较商用硝酸铵（ AN）和自制非爆炸/不可还原农用硝酸铵（ NEIFAN）的热稳定性，用热重（ TA）-差热扫描量热（DTA）-微商热重（DTG）、差示扫描量热（DSC）和绝热量热（ ARC）研究了 AN 和 NEIFAN 的晶转变化、热分解特性和绝热分解过程，得到了绝热分解温度与压力随时间、自加热速率与分解压力随温度的变化曲线，计算了绝热假零级分解反应动力学参数---表观活化能和指前因子。结果表明，与 AN 相比，NEIFAN 在88℃左右的晶转峰消失，显示 NEIFAN 有更好的热物理稳定性。由TA-DTA-DTG和 DSC 曲线所得的 NEIFAN 的热分解峰温度和由 ARC 数据所得的 NEIFAN 的假零级绝热分解反应的表观活化能比AN 的相应值高，表明 NEIFAN 比 AN 有更好的热稳定性。认为，NEIFAN 的物理化学稳定性的提高应归因于 NEIFAN 中无机和有机添加剂的联合作用。
為分析、比較商用硝痠銨（ AN）和自製非爆炸/不可還原農用硝痠銨（ NEIFAN）的熱穩定性，用熱重（ TA）-差熱掃描量熱（DTA）-微商熱重（DTG）、差示掃描量熱（DSC）和絕熱量熱（ ARC）研究瞭 AN 和 NEIFAN 的晶轉變化、熱分解特性和絕熱分解過程，得到瞭絕熱分解溫度與壓力隨時間、自加熱速率與分解壓力隨溫度的變化麯線，計算瞭絕熱假零級分解反應動力學參數---錶觀活化能和指前因子。結果錶明，與 AN 相比，NEIFAN 在88℃左右的晶轉峰消失，顯示 NEIFAN 有更好的熱物理穩定性。由TA-DTA-DTG和 DSC 麯線所得的 NEIFAN 的熱分解峰溫度和由 ARC 數據所得的 NEIFAN 的假零級絕熱分解反應的錶觀活化能比AN 的相應值高，錶明 NEIFAN 比 AN 有更好的熱穩定性。認為，NEIFAN 的物理化學穩定性的提高應歸因于 NEIFAN 中無機和有機添加劑的聯閤作用。
위분석、비교상용초산안（ AN）화자제비폭작/불가환원농용초산안（ NEIFAN）적열은정성，용열중（ TA）-차열소묘량열（DTA）-미상열중（DTG）、차시소묘량열（DSC）화절열량열（ ARC）연구료 AN 화 NEIFAN 적정전변화、열분해특성화절열분해과정，득도료절열분해온도여압력수시간、자가열속솔여분해압력수온도적변화곡선，계산료절열가령급분해반응동역학삼수---표관활화능화지전인자。결과표명，여 AN 상비，NEIFAN 재88℃좌우적정전봉소실，현시 NEIFAN 유경호적열물리은정성。유TA-DTA-DTG화 DSC 곡선소득적 NEIFAN 적열분해봉온도화유 ARC 수거소득적 NEIFAN 적가령급절열분해반응적표관활화능비AN 적상응치고，표명 NEIFAN 비 AN 유경호적열은정성。인위，NEIFAN 적물이화학은정성적제고응귀인우 NEIFAN 중무궤화유궤첨가제적연합작용。
To analyze and compare the thermal stability of commercial ammonium nitrate( AN)and homemade non-explosive and irrestorable fertil-izer-grade ammonium nitrate( NEIFAN),the crystal transformation changes,thermal decomposition characteristics and adiabatic decomposition processes of AN and NEIFAN were studied by thermogravimetry( TG)-differential thermal analysic( DTA)-derivative thermogravimetry( DTG),differ-ential scanning calorimetry( DSC)and accelerating rate calorimetry( ARC). The curves of thermal decomposition temperature and pressure vs time, self-heating rate and pressure vs temperature for AN and NEIFAN under the adiabatic decompositions condition were obtained. The kinetic parameters ( apparent activation energy and pre-exponential factor )of pseudo zero order adiabatic decomposition reaction for AN and NEIFAN were calculated. The results show that in comparison with AN,the crystal transformation peak at about 88 ℃ of NEIFAN disappears,revealing that NEIFAN has better thermal physical stability. The decomposition peak temperature of NEIFAN obtained by TA-DTA-DTG and DSC curves and the apparent activation energy of the pseudo zero order adiabatic decomposition reaction of NEIFAN obtained by ARC data are much higher than those of AN,indicating that NEIFAN has a higher heat-resistance ability than AN. Considering that the increase of physicochemical stability of NEIFAN is attributed to the joint ac-tion of inorganic and organic additives in NEIFAN.
