【摘要】：HTPE推進(jìn)劑作為當(dāng)今鈍感推進(jìn)劑的典型代表,由于其顯著的鈍感性能和力學(xué)性能具有良好的推廣應(yīng)用前景。為了優(yōu)化HTPE推進(jìn)劑配方,本文選取了兩種AP/PSAN固含量不同的HTPE推進(jìn)劑配方H01和H02作為研究對(duì)象,探討其安全性。首先,采用差示掃描量熱儀(DSC)和絕熱加速量熱儀(ARC)分別研究了H01和H02在動(dòng)態(tài)升溫條件下和絕熱條件下的熱分解特性,并計(jì)算了熱分解動(dòng)力學(xué)參數(shù)：其次,利用慢速烤燃試驗(yàn)(Slow Cook-off Test)和快速烤燃試驗(yàn)(Fast Cook-off Test)研究了H01和H02在不同烤燃條件下的響應(yīng)特性；最后,通過H01和H02的熱輻射通量計(jì)算以及隔板試驗(yàn),確定了兩種HTPE推進(jìn)劑配方的危險(xiǎn)性等級(jí)。結(jié)果表明：在線性升溫條件下,H01和H02的第一段分解放熱峰是增塑劑A3的分解過程,其起始分解溫度均在157～186℃之間,相同升溫速率下兩者的起始分解溫度和峰溫基本一致,第一段熱分解活化能大小相當(dāng)；在絕熱條件下,H01的起始分解溫度(147.78℃)高于H02的起始分解溫度(136.44℃),H01熱分解過程中的絕熱溫升大于H02的絕熱溫升,H01熱分解過程中的最大溫升速率和最大壓升速率都大于H02,H01的熱穩(wěn)定性相對(duì)較好；在慢速烤燃試驗(yàn)中,H01和H02的響應(yīng)溫度分別是119.6℃和130.8℃,響應(yīng)等級(jí)分別為燃燒和爆轟；在快速烤燃試驗(yàn)中,H01和H02的響應(yīng)時(shí)間分別為67s和81s,響應(yīng)等級(jí)均為快速熱分解；利用氧彈式量熱儀測(cè)得H01和H02的燃燒熱分別為11.54MJ·Kg-1和12.03 MJ·Kg-1,通過小型燃燒試驗(yàn)測(cè)得H01和H02 100kg樣品的燃燒時(shí)間分別為100秒和84秒,計(jì)算得到H01在5m和15m處的熱輻射通量分別為12.13 kW.m-2和1.35 kW·m-2,H02在5m和15m處的熱輻射通量分別為15.05 kW.m-2和1.67 kW·m-2,表明兩種推進(jìn)劑發(fā)生燃燒時(shí),熱輻射通量滿足1.4級(jí)的標(biāo)準(zhǔn)；隔板試驗(yàn)中,H01和H02在受到7GPa沖擊壓力條件下,都會(huì)發(fā)生整體爆轟,表明這兩種推進(jìn)劑都具有整體爆轟的特性,最終將H01和H02歸為1.1項(xiàng)。
[Abstract]:As a typical representative of insensitive propellants, HTPE propellants have a good prospect of popularization and application because of their remarkable insensitive properties and mechanical properties. In order to optimize the formulation of HTPE propellants, two kinds of HTPE propellants H01 and H02 with different AP/PSAN solid content were selected as the research objects, and their safety was discussed. Firstly, the thermal decomposition characteristics of H01 and H02 under dynamic heating and insulation conditions were studied by differential scanning Calorimeter (DSC) and adiabatic accelerated Calorimeter (ARC), respectively, and the kinetic parameters of thermal decomposition were calculated. Secondly, the response characteristics of H01 and H02 under different burning conditions were studied by slow burning test (Slow Cook-off Test) and rapid burning test (Fast Cook-off Test). Finally, through the calculation of heat radiation flux of H01 and H02 and the partition test, the risk grade of two kinds of HTPE propellants was determined. The results show that under the condition of linear heating, the first stage liberation heat peak of H01 and H02 is the decomposition process of plasticizer A3, and the initial decomposition temperature is between 157 鈩，

本文編號(hào)：2507603