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《固體推進劑用氧化劑防吸濕、防結(jié)塊技術(shù)研究》由會員上傳分享，免費在線閱讀，更多相關內(nèi)容在學術(shù)論文-天天文庫。
1、碩士論文固體推進劑用氧化劑防吸濕、防結(jié)塊技術(shù)研究摘要二硝酰胺銨(ADN)由于具有能量高、不含鹵素和化學穩(wěn)定好等諸多良好性能，被認為是下一代低特征信號推進劑的候選氧化劑之一。而ADN的強吸濕性使得難以在固體推進劑中應用，因此對ADN進行表面改性處理以降低其吸濕性將非常有意義。本文采用液相包覆法和氣相包覆法，選用多種材料對ADN粉體進行處理。實驗表明，硬脂酸作為防潮劑，采用溶劑稀釋液包覆法對ADN有明顯的防吸濕作用，特別是在室溫較高時更為顯著。同時，依據(jù)鹽橋作用造成超細高氯酸銨(AP)粉體結(jié)塊的機理，提出用阻隔劑對超細AP進
2、行改性的防結(jié)塊方法。實驗證明，以雙組分改性劑和分散載體結(jié)合的阻隔材料(顆粒)，經(jīng)過干法粉碎工藝，可達到比較理想的效果。改性后的超細AP，在常溫下和適當?shù)拿芊鈼l件下存放兩個月，基本不結(jié)塊。制成固體推進劑后，推進劑的力學性能和燃燒性能有明顯提高，其它理化特性無明顯變化。這種干式改性工藝，操作簡便，效果明顯，具有工業(yè)化推廣應用的前景。關鍵詞：二硝酰胺銨，超細高氯酸銨，表面改性，防吸濕，抗結(jié)塊，固體推進劑碩士論文AbstractADNisonooft11ecandidateexcellentoxidersbeingusedint
3、henextgenerationlowsignaturepropellantsduetoitsmanynicepropertiesofhighenergy,non-halogen，goodchemicalstabilityandSO011．However,ADNisdifficulttobeappliedinthesolidpropellantsbecauseofitsreadilymoistureabsorptionofADN．Itwillbesignificanttoreducemoistureabsorptionv
4、iamodificationofthesurfaceofADNpowders．Inthispaper，ADNpowersmodifiedwimseveralmaterialsmeansofcoatinginliquid-phaseandgasphase,respectively．TheexperimentalresultsthestearicacidcouldbeusedinthemoistureproofofADNpowders，especiallyatthehi曲roomtemperature,ifthemethod
5、ofcoatinginliquid-phaseWasused．Atthesametime，theanti—agglomerationmethodofmodifyingthesurfaceofultrafineAPpowdersusingthebarrierswereproposedaccordingtothemechanismofagglomerationresultedfromthesaltbridgesformedbetweentheUFAPparticles．Theexperimentalresultsshowth
6、atthebarriergrains，includingthedual—componentmodifiersandthedispersingcarriers，couldbeusedintheanti-agglomerationofUFAPpowderswhenthebarriergrainsandAPweresimultaneouslyjetmilled．ThemodifiedUFAPcouldbestrongedwitllwinlanti-agglomerationfortowmonthsatroomtemperatu
7、reandunderthepowderssealingconditions．WhenthemodifiedUFAPwereusedinthesolidpropdlant,themechanicalpropertyandcombustionpropertyWereobviouslyimproved，whiletheotherphysicalandchemicalpropertieswerehardlyaffected．ThisdrymodificationofUFAPshouldbereadilyappliedintoth
8、eindustrialproductionbecauseitWassimplyaperatedandthegoodresultcouldbeobtained．Keywords：ADN，ultrafmeAP,modificationofsurface，anti-moistureabsorption,anti—agglo
