本文選題：球形發(fā)射藥 + 燃燒��； 參考：《西南科技大學(xué)》2017年碩士論文

【摘要】：由于大粒徑球形發(fā)射藥具有小的初始燃燒比表面,可應(yīng)用于大中口徑身管武器,因此對大粒徑球形發(fā)射藥的研究引起了關(guān)注,但是現(xiàn)有的球形發(fā)射藥生產(chǎn)工藝存在粒徑難控制、溶劑用量大、操作復(fù)雜的問題,本論文借鑒制藥領(lǐng)域中大粒徑球形顆粒的生產(chǎn)工藝,采用擠出滾圓法和剪切搓圓法制備大粒徑球形發(fā)射藥。論文的主要研究工作如下:(1)利用擠出滾圓法制備球形發(fā)射藥。研究了溶劑與膠化物料的質(zhì)量比、滾圓時間、滾圓機載藥量對成球質(zhì)量的影響,并用SEM對制備的顆粒形貌和內(nèi)部結(jié)構(gòu)進行測試,采用密度瓶法、干法和干篩法分別測試球形顆粒的顆粒密度、堆積密度和粒徑分布。結(jié)果表明當(dāng)溶劑質(zhì)量為膠化物料質(zhì)量的20%、滾圓時間為7 min、滾圓機載藥量為300 g時可制得堆積密度為0.704 g.cm-3的球形發(fā)射藥,且大于1 mm粒徑范圍內(nèi)的顆粒所占比例為66.4%,最大直徑大于1.6 mm;該方法制備的球形發(fā)射藥表面粗糙、內(nèi)部疏松且多空洞、堆積密度較小,適合低密度球形發(fā)射藥的制備。(2)利用剪切搓圓法制備大粒徑球形發(fā)射藥。研究了搓刀間距、溶棉比、搓刀旋轉(zhuǎn)速率、單體直徑、成條設(shè)備對成球質(zhì)量的影響,并用氣相色譜法(GC)檢測球形顆粒殘溶,采用密度瓶法、標(biāo)準(zhǔn)容器法分別測試球形顆粒的顆粒密度和堆積密度,采用密閉爆發(fā)器測試其燃燒性能,結(jié)果表明經(jīng)過烘干后的顆粒殘溶達標(biāo),且當(dāng)搓刀間距為0.4 mm,溶棉比為0.4:1,丸條直徑為3.8 mm時,制備的球形藥伸長度為1.033,顆粒密度為1.680 g.cm-3,堆積密度為0.945g.cm-3,密閉爆發(fā)器實驗結(jié)果表明顆粒燃燒穩(wěn)定,燃燒曲線符合球形藥減面燃燒規(guī)律,該方法適合高密度的大粒徑球形發(fā)射藥的制備。
[Abstract]:Because the spherical propellant with large particle size has small initial combustion ratio surface, it can be used in large and medium caliber barrel weapon, so the research of large diameter spherical propellant has attracted much attention. However, the existing production technology of spherical propellant is difficult to control the particle size. The problem of large amount of solvent and complicated operation is discussed. In this paper, the large size spherical propellants are prepared by extruding round method and shearing rubbing round method for reference to the production process of large diameter spherical particles in pharmaceutical field. The main research work of this paper is as follows: 1) spherical propellant is prepared by extrusion round method. The effects of the mass ratio of solvent to gelling material, the rolling time and the loading amount of the rolling machine on the ball forming quality were studied. The morphology and internal structure of the prepared particles were tested by SEM, and the density bottle method was used. The particle density, packing density and particle size distribution of spherical particles were measured by dry method and dry sieve method respectively. The results show that the spherical propellant with packing density of 0.704 g.cm-3 can be obtained when the solvent mass is 20% of the gelling material mass, the rolling time is 7 minutes, and the loading amount of the roll machine is 300g. The ratio of particles larger than 1 mm in diameter is 66.4 and the maximum diameter is more than 1.6 mm. The spherical propellant prepared by this method has rough surface, loose interior and many voids, and small packing density. It is suitable for the preparation of low density spherical propellants. The effects of the distance between the twisting knife, the ratio of cotton to cotton dissolving, the rotation rate of the rubbing knife, the diameter of the monomer and the strip forming equipment on the quality of the ball were studied. The residual dissolution of the spherical particles was detected by gas chromatography (GC), and the density bottle method was used. The particle density and packing density of spherical particles were measured by standard vessel method. The combustion performance of spherical particles was tested by a closed explosive device. The results showed that the residual solution of the particles after drying was up to standard. When the diameter of the pellet is 3.8 mm, the particle density is 1.680 g 路cm ~ (-3) and the particle density is 1.680 g 路cm ~ (-3). The experimental results of the airtight exploder show that the particle combustion is stable. The combustion curve is in accordance with the law of surface combustion of spherical propellant, and this method is suitable for the preparation of high density spherical propellants with large particle size.
【學(xué)位授予單位】：西南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TQ562

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本文編號：1866124