某新配方固体推进剂热安全性研究

摘要推进剂又称推进药，是有规律地燃烧释放出能量，产生气体，推送火箭和导弹的火药。推进剂是航天产品的重要组成部分，其危险性相对较大，储存、运输或使用不当时易发生燃烧、爆炸、中毒事故。若在生产、加工、运输、储存中发生事故，将很难控制，因此推进剂安全性是其研发阶段普遍关注的问题。为了指导该推进剂的安全储存、运输和使用，本文对该固体推进剂的热分解动力学和热安全性进行了研究。77135

首先采用差示扫描量热法选择不同升温速率对该固体推进剂进行测试，并利用Kissinger法和Friedman法计算其热分解动力学参数，对其自催化分解特性进行初步判断。其次，利用差示扫描量热仪对该固体推进剂进行等温实验，测定此推进剂在等温条件下的热分解特性，计算其相应的热分解动力学参数，利用FEA模型估算样品的自加速分解温度SADT。

结果表明，在动态升温的条件下，该物质的分解反应发生在固体状态下，随着温度的升高，放热峰峰温升高，分解开始温度升高。在等温条件下，可以看出该物质具有自催化特性，且不遵循统一反应机理，该物质的热分解反应为一个n级反应接一个自催化分解反应。通过FEA模型推算的SADT为150℃左右。毕业论文关键词固体推进剂热安全性热稳定性热分解动力学差示扫描量热法

毕业设计说明书外文摘要

Title Study on the thermal saftey of a kind of propellant with new fomula

Abstract Propellant is a gunpowder which can burn regularly, produce gas, push rockets and missiles。 Propellant is an important part of aerospace products。 It is characterized by great risk, combustible and explosive。 If there is an accident happens during its production, storage and use, the consequence will be disastrous。 As a result, the thermal safety of the propellant is the most important things during the process of the reasearch and development。 For promoting the development of the propellant and ensure the thermal safety of the propellant in production, storage and use, the new solid are the object for reasearch on the thermal safety。

Firstly, the study on the thermal behavior of the propellant at linear temperature increase condition and isothermal condition, are carried out by using differential scanning calorimeter (DSC)。Next, the self-accelerating decomposition temperature (SADT) in 50kg package, 25kg package, 5kg package is obtained based on the Finite Element Analysis (FEA) model。

The DSC results show that, under linear temperature increase condition, the proellant is decompose in the solid state。With the increase of the temperature ,the initial decomposition temperature of the propellant increase。 The isothermal model measurements indicate that the thermal decomposition of the propellant has the property of autocatalytic。 Besides the thermal deconposition of the propellant do not follow a single mechanism。The SADT calculate by FEA model are in good agreement, about 150℃。

Keywords solid propellant, thermal safety, thermal stability, thermal decomposition kinetics, DSC

1 引言 1

1。1 课题研究的背景 1

1。2 国内外研究概况 1

1。2。1 关于推进剂热安全性方面的研究某新配方固体推进剂热安全性研究:http://www.youerw.com/huaxue/lunwen_88613.html