摘要纳米金刚石由于其应用范围广泛，近年来成为众多专家学者关注的领域，其制造技术更是广受研究。目前而言，爆轰法合成的纳米金刚石由于粒径小、晶型佳，工艺放大可行性高的特点，在不少新材料公司已投资生产。本文基于爆轰法合成纳米金刚石的基本原理，建造一套适用于爆轰法合成纳米金刚石的系统。首先，设计了内径1600mm，厚40mm的球形爆炸罐载体，并对其进行强度校核。计算结果表明，爆炸罐能承受的最大压力为12。8MPa，单次最大药量为783g。然后，对整个爆轰制造过程中涉及到的混药、压药和装配等危险过程进行了危险性评估，提出了安全操作步骤和注意事项。最后进行了单次药量500g的TNT/RDX混合物的爆轰合成纳米金刚石实验。并采用XRD、SEM和TEM对产物进行分析，分析结果表明：爆轰产物为类球形纳米金刚石，粒径在5nm左右，验证了整套爆轰法合成纳米金刚石系统的可行性。79337
毕业论文关键词 爆轰法 纳米金刚石 强度校核 结构与表征
毕业设计说明书外文摘要
Title Synthesis and characterization of Nano-diamond by Detonation
Abstract Many experts and scholars have become concerned about nano-diamond in recent years since its wide range of applications, especially its manufacturing technology。 For now, the method of synthesizing nano-diamond via detonation has been invested by many new materials company due to its small particle size, good crystal form and access to amplification technically。 Based on the basic principle of utilizing detonation to synthesize nano-diamond, this study builds a system suitable for this method。 First, a spherical tank for explosion, with the inner diameter of 1600mm and thick of 40mm, was designed and its strength checked。 The results showed that the maximum explosion pressure that tank can withstand is 12。8MPa and the maximum single dose is 783g。 Then dangerous manufacturing process, including mixing drugs, pressure drugs and assembling in the whole process of detonation, was evaluated in terms of its risky, and safety procedures and precautions are proposed。 Finally, the experiment of synthesizing nano-diamond through detonation with a single dose of 500g of TNT / RDX mixture was conducted, and product was analyzed by XRD, SEM and TEM, which showed that the products were in spherical nano-diamond shape with its particle size of 5nm, which verified the feasibility of this measure。
Keywords Detonation nano-diamond strength checked structure and surface feature
目 次
1 引言 1
1。1 研发的意义 1
1。2 研究历史 1
1。3 纳米金刚石形成机理 3
1。4 工艺研究 4
1。5 UFD应用研究 4
1。6 存在的问题 5
1。7 本文主要工作 5
2 爆炸罐强度计算 6
2。1 爆炸罐结构及材料 6
2。2 最大药量计算 7
2。3 罐体开孔大小与强度校核 9
3 操作步骤及注意事项 10
3。1 混药操作规程 10
3。1。1 操作规程 10
3。1。2 操作注意事项 10
3。2 压药操作规程 UFD爆轰合成纳米金刚石及其性能表征:http://www.youerw.com/huaxue/lunwen_91648.html