【作者】 武湃；

【导师】 张炜；

【作者基本信息】 国防科学技术大学 ， 军事化学与烟火技术， 2002， 硕士

【摘要】 本文系统研究了GAP（聚缩水甘油叠氮化物）的固化体系。通过调节固化参数，选择合适的固化剂和交联剂体系，添加安定剂以及改进工艺步骤等方法，解决了GAP预聚物及GAP贫氧推进剂制备工艺中的关键技术；采用添加扩链剂的方法改善了GAP贫氧推进剂的力学性能；最后研制出一个可实用的GAP贫氧推进剂配方。 采用差示扫描量热法（DSC）与高压差热分析法（PDTA），系统研究了GAP贫氧推进剂中主要组分以及GAP模拟推进剂的常压与高压热分解特性。同时考察了过渡金属氧化物（TMO）对上述体系常压与高压热分解特性的影响。实验结果表明，在不同压强下，贫氧推进剂各组分的热分解特征有所不同；在同一压强下，TMO催化剂对贫氧推进剂中不同组分的催化作用不尽相同；同一催化剂，在不同压强下对同一组分的催化能力也不同。 采用直联式非壅塞固体火箭冲压发动机法，测定了GAP贫氧推进剂的低压燃速。测试结果表明，GAP贫氧推进剂具有点火延迟期短、燃速高、燃速对压强敏感性强等优点，且某些TMO催化剂如MoO₃、Co₂O₃等可显著提高GAP贫氧推进剂的燃速。 研究结果表明，GAP贫氧推进剂的燃速与AP／KP／GAP模拟贫氧推进剂及其主要组分的热分解性能有一定的相关性。具体表现在：GAP／TMO贫氧推进剂的燃速与常压下TMO催化剂对AP／KP／GAP模拟贫氧推进剂中GAP和KP热分解的催化作用相关。Co₂O₃和CuO对AP的高效催化作用也是提高GAP贫氧推进剂燃速的一个原因。更多还原

【Abstract】 The curing system of GAP (Glycidyl Azide Polymer) has been studied. The processing techniques to manufacture GAP net polymer and GAP fuel-rich propellant were determined by means of careful selections of curing parameter,proper curative and crosslinking agent,addition of stabilizer and etc. The mechanic property of GAP propellant was modified by addition of chain extender. As a result,the GAP fuel-rich propellant was developed.By means of DSC and PDTA methods,the thermal decomposition characteristics of GAP model fuel-rich propellant and its ingredients at both 0.1 and 0.5 MPa were investigated. The actions of TMOs on the thermal decomposition properties of the above-mentioned system were studied. The results showed that the environmental pressure and catalysts have various actions on the thermal decomposition characteristics of the propellant and its ingredients.The burning rates of the GAP/TMO fuel-rich propellants were measured by use of the pipe-connected unchoked ducted rocket testing facility. The GAP fuel-rich propellant showed short ignition delay time,high burning rate,and sensitive to variation of gas generator pressure. The results also showed that some TMO,such as MoO3 and 0203 can increase the burning rate of the GAP fuel-rich propellant.The experimental results also showed that there is a correlation between the burning rates of GAP fuel-rich propellant and the thermal decomposition temperature of KP and GAP. The effective catalysts of AP thermal decomposition,Co2O3 and CuO,can also increase the burning rate of the GAP fuel-rich propellant.更多还原