本文選題：亞微米CL-20 + 機(jī)械研磨��； 參考：《南京理工大學(xué)》2015年碩士論文

【摘要】：高能鈍感推進(jìn)劑是固體推進(jìn)劑重要的發(fā)展方向之一,添加高能量密度化合物,如CL-20,是實(shí)現(xiàn)推進(jìn)劑高能化的有效途徑。但CL-20感度高這一缺點(diǎn)正嚴(yán)重阻礙著其在高能鈍感推進(jìn)劑中的廣泛應(yīng)用。為此,降低CL-20的感度,促進(jìn)高能鈍感推進(jìn)劑發(fā)展顯得尤為重要。大量研究表明,含能材料超細(xì)化能夠顯著降低其感度,改善其綜合性能。國(guó)內(nèi)外報(bào)道了很多有關(guān)CL-20超細(xì)化的方法,各有優(yōu)缺點(diǎn),但為了實(shí)現(xiàn)降感CL-20的實(shí)際應(yīng)用,批量制備超細(xì)CL-20成了重要課題。為此,本課題采用機(jī)械研磨法安全批量地制備了亞微米CL-20顆粒,并初步探索了其在復(fù)合固體推進(jìn)劑中的應(yīng)用。具體內(nèi)容如下：首先,采用機(jī)械研磨法安全批量地制備了500g亞微米CL-20顆粒。利用激光粒度儀及電子掃描顯微鏡(SEM)分析了亞微米CL-20的粒徑分布及顆粒形貌；同時(shí)研究了含亞微米CL-20懸浮液漿料的干燥工藝,并采用激光拉曼光譜(Raman)、傅立葉變換紅外光譜(FT-IR)、X射線粉末衍射(XRD)以及高效液相色譜(HPLC)分析了亞微米CL-20的晶型和純度,結(jié)果表明：亞微米CL-20顆粒呈類球形,其平均粒徑(d50)等于200nm,粒徑分布窄,并保持著原料CL-20的ε晶型且純度高。其次,使用熱重(TG)和差示掃描量熱法(DSC)分析了亞微米CL-20的熱分解特性,同時(shí)表征了產(chǎn)品的撞擊感度、摩擦感度和沖擊波感度,實(shí)驗(yàn)結(jié)果表明：CL-20亞微米化后其熱穩(wěn)定性基本沒有發(fā)生變化,其撞擊感度,摩擦感度和沖擊波感度分別降低了116.2%,22%和53.1%,降感效果非常明顯,有利于CL-20的應(yīng)用。最后,初步探索了亞微米CL-20在HTPB復(fù)合固體推進(jìn)劑中的應(yīng)用,研究了亞微米CL-20/HTPB推進(jìn)劑的熱性能和能量性能。結(jié)果表明：隨著亞微米CL-20含量的增加,CL-20/HTPB推進(jìn)劑的熱穩(wěn)定性稍有降低,但推進(jìn)劑的最高火焰溫度和燃燒速度均隨亞微米CL-20含量的增加而升高。
[Abstract]:High energy insensitive propellant is one of the important development directions of solid propellant. Adding high energy density compounds, such as CL-20, is an effective way to realize the high energy of propellant. However, the high sensitivity of CL-20 seriously hinders its wide application in high energy insensitive propellants. Therefore, it is very important to reduce the sensitivity of CL-20 and promote the development of high energy insensitive propellants. A large number of studies show that superfine energetic materials can significantly reduce its sensitivity and improve its comprehensive properties. Many methods of ultra-fine CL-20 have been reported at home and abroad, each has its advantages and disadvantages, but in order to achieve the practical application of CL-20, batch preparation of ultra-fine CL-20 has become an important subject. In this paper, submicron CL-20 particles were prepared safely by mechanical grinding method, and their application in composite solid propellant was preliminarily explored. The main contents are as follows: firstly, 500g submicron CL-20 particles were prepared safely by mechanical grinding. The particle size distribution and morphology of submicron CL-20 were analyzed by means of laser particle size analyzer and electron scanning microscope (SEM), and the drying process of suspension slurry containing submicron CL-20 was also studied. The crystal structure and purity of submicron CL-20 were analyzed by Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR) and high performance liquid chromatography (HPLC). The results showed that the submicron CL-20 particles were spherical. The average particle size is 200 nm, the particle size distribution is narrow, and the 蔚 crystal form of the raw material CL-20 is maintained and the purity is high. Secondly, the thermal decomposition characteristics of submicron CL-20 were analyzed by thermogravimetry (TG) and differential scanning calorimetry (DSC). At the same time, the impact sensitivity, friction sensitivity and shock wave sensitivity of the product were characterized. The experimental results show that the thermal stability of the CL-20 is almost unchanged after sub-micron reaction, and its impact sensitivity, friction sensitivity and shock sensitivity are reduced by 116.2% and 53.1%, respectively. The effect of reducing sensitivity is very obvious, which is beneficial to the application of CL-20. Finally, the application of submicron CL-20 in HTPB composite solid propellants is preliminarily explored. The thermal and energy properties of submicron CL-20/HTPB propellants are studied. The results show that the thermal stability of CL-20 / HTPB propellant decreases slightly with the increase of submicron CL-20 content, but the maximum flame temperature and combustion rate increase with the increase of submicron CL-20 content.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.4

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本文編號(hào)：1787257