Preparation and characterization of polyimide freestanding films;

聚酰亚胺自支撑膜的制备及其表面形貌

This paper deals with the electrochemical synthesis of the free standing film of PAn with An as monomer, perchloric acid as doping in aqueous solution and stainless steel as electrode.

６％）的聚苯胺（ＰＡｎ）自支撑膜的电化学方法，并探讨了电化学聚合反应条件对ＰＡｎ膜性能的影响，同时借助ＳＥＭ、ＩＲ、ＥＳＲ等手段表征了所得的聚合物膜。

The development of laser physics,nuclear physics and chemical nuclear experiment is restricted by the preparation of self-supportingfilm.

能否成功制备自支撑薄膜不仅制约着激光和核物理研究的发展,而且限制了原子核化学试验的开展。

The preparation of self-supportingfilm is important for the research of nuclear physics.

自支撑薄膜的制备在核科学研究中至关重要。

Reseach and Prospects on the Techniques of Preparation for Free-standing GaNSubstrates by Hydride Vapor Phase Epitaxy;

氢化物气相外延自支撑GaN衬底制备技术研究进展

Based on great progress of GaN growth on the silicon substrate,a kind of method of Free-standing GaNsubstrate is proposed in this paper.

在硅衬底上生长GaN取得了极大进展的基础上,本文创新性地提出了一种制备自支撑GaN衬底的新方法,即首先利用MOCVD,通过插入层和缓冲层技术在硅衬底上生长2μm的无微裂GaN薄膜;然后通过化学腐蚀的方法去除硅衬底,得到应力释放的GaN薄膜;最后在此薄膜上利用HVPE生长20-100μm的厚GaN薄膜,形成自支撑GaN衬底。

Focused on these problems, this paper introduces an improved sol-gel method without template, combined with centrifugal spinning and water vapor heat treatment process to prepare nanocystal self-supporte.

针对目前粉末状二氧化钛易团聚,难分离回收,而薄膜和负载型二氧化钛光催化活性差的难题,本文分别以钛酸四丁酯和四氯化钛为钛源,采用改进的溶胶-凝胶法,并结合离心甩丝和水蒸气热处理工艺制备了二氧化钛纳米晶自支撑连续纤维。