用于激光烧蚀微推进技术的GAP靶带制备工艺研究

摘要微推力器是微纳卫星姿态控制、轨道保持和机动的重要元件。微纳卫星的快速发展，对微推进系统提出了很高的要求。针对激光烧蚀微推进技术中GAP含能靶带均匀性和推进性能较差的现状，本文中开展的主要工作如下：
（1）确定了激光烧蚀微推进技术中含能靶带的药剂配方，并且探索实验了TMA、IPDI、HDI三种固化剂以改进聚合物GAP固化速率和固化效果，得出HDI为最佳试剂，固化速率大大改善，固化效果也显著提高。28872
（2）探索了激光烧蚀微推进靶带涂覆成型改进工艺，分别在选取不同温度、不同刮刀厚度的真空条件下，通过激光扫描共聚焦显微镜和扫描电子显微镜表征制得的靶带表面，获得了靶带表面均匀特性，并且确定了刮刀厚度为200μm、固化温度为40℃~50℃的最佳工艺条件，使其孔隙率达到实验要求。
关键词激光烧蚀 GAP推进剂微推进涂覆机气孔孔隙率
毕业论文设计说明书外文摘要
Title     Laser-Ablation Micro Propulsion Technology
Abstract
Micro thrust is an important element of Micro and nano satellite attitude controlment,track holding and maneuvering.The rapid development of micro-nano satellite,puts forward high demands on micro propulsion system.In order to study laser ablation micro-propulsion technology,this paper's main work is as follows:
（1）Determine the laser ablation micro-propulsion technology in the ablation layer of pharmaceutical formulations,and explore TMA、IPDI、HDI to improve the cure rate and cure effect of the polymer GAP and HDI is the best reagent, greatly improve the curing rate, curing effect also improved significantly.
(2)Explore the micro propulsion target with laser ablation coating forming process improvements.By selecting different temperatures and vacuum conditions of blade thickness respectively.By laser scanning confocal microscopy and scanning electron microscopy to obtain the target table with face rate,and to determine the blade thickness is 200μm, optimal conditions for the curing temperature 40℃ -50℃,make its porosity to meet the experimental requirements.
Keywords Laser ablation GAP propellant Micro propulsion Coating machine Air hole Porosity
目   次
1 引言   1
1.1 背景及意义   1
1.2 国内外研究现状   1
1.3 本文主要研究内容   4
2 激光烧蚀靶材的选择   5
2.1 金属推进剂   5
2.2 高聚物推进剂   5
2.3 含能推进剂   6
3 激光烧蚀靶材制备   8
3.1 烧蚀层药剂选择   8
3.1.1 聚合物GAP   8
3.1.2 掺杂碳粉   8
3.1.3 固化剂   8
3.1.4 固化催化剂   11
3.2 烧蚀层配方   11
3.2.1 实验试剂及表征   11
3.2.2 烧蚀层配方确定   12
3.3 靶带制备   13
4 靶带性能表征与靶带制作工艺的改进   16
4.1 激光推进的重要参数   16
4.2 激光烧蚀靶带的孔隙率的研究与测定   17
4.2.1 孔隙率   17
4.2.2 孔隙率的表征   17
4.2.3 孔隙率的测定方法   18
4.3 激光烧蚀靶带制备工艺对靶带孔隙率的影响   19
4.3.1 涂覆机刮刀厚度对靶带孔隙率的影响   19 用于激光烧蚀微推进技术的GAP靶带制备工艺研究:http://www.youerw.com/huaxue/lunwen_23882.html