搜索结果: 16-30 共查到“知识库 薄膜技术”相关记录94条 . 查询时间(1.171 秒)
为提高MEMS压电器件的性能，国内外研究人员对ZnO压电薄膜的制备方法进行了优化，掺杂是优化手段之一。研究表明，掺钒ZnO薄膜的压电系数比未掺杂的高一个数量级，其压电系数可达110pm/V。但目前国际上主要采用磁控溅射法制备掺钒ZnO压电膜，这种方法存在掺杂不充分、不均匀、掺杂浓度难以准确控制等问题。
Effect of asymmetry in a bipolar membrane on water dissociation-a mathematical analysis
:Bipolar membrane Water dissociation Current voltage characteristics Asymmetry
2016/3/25
Effect of asymmetry in a bipolar membrane on water dissociation-a mathematical analysis.
Electrodialysis processes with bipolar membranes (EDBM) in environmental protection—a review
Bipolar membrane Water dissociation Electrodialysis Waste recovery Cleaning production
2016/3/25
Electrodialysis with bipolar membranes (EDBM) has recently gained increasing attention for the production of acids and bases from the corresponding salt solutions. This process can be very energy-effi...
Citric acid production by electrodialysis with bipolar membranes
Bipolar membrane Citric acid Electrodialysis Water dissociation Current efficiency
2016/3/25
Production of citric acid from sodium citrate was carried out by electrodialysis (ED), using bipolar membranes (BP) prepared from poly(phenylene oxide) (PPO). The process feasibility was tested using ...
Effect of cell configurations on the performance of citricacid production by a bipolar membrane electrodialysis
Bipolar membrane Citric acid Cell configuration Water dissociation
2016/3/25
The purpose of this study was to evaluate the effect of cell configurations on the energy consumption and the electroacidification parameters in the production of citric acid using a bipolar membrane ...
Fundamental studies on a new series of anion exchange membranes:effect of simultaneous amination-crosslinking processes on membranes ion-exchange capacity and dimensional stability
Anion exchange membrane Amination Crosslinking Ion-exchange capacity Dimensional stability
2016/3/25
The effects of amination time and temperature, the compositions of amination medium on membrane stability and ion-exchange capacity (IEC) are reported in this paper. It is revealed that themembrane’s ...
EFFECT OF SOLVENT COMPOSITION ON THE SULFONATION DEGREE OF POLY(PHENYLENE OXIDE) (PPO)
Poly(phenylene oxide) Sulfonation Solubility parameter
2016/3/25
This paper investigates the possibility of attaining sulphonated poly(phenylene oxide) (SPPO) with a relatively higher sulfonation degree. To achieve this aim, the approach we adopt is to improve the ...
Ionic conductivity thresholdin sulfonatedpoly (phenylene oxide) matrices:a combination of three-phase model and percolation theory
Poly (phenylene oxide) polymer Ionic transfer Ion exchange membrane Percolation threshold Three-phase model Conductivity
2016/3/25
In this paper, both the percolation theory andthe three-phase model (TPM) are employedto study the ionic transport behavior in sulfonated poly(phenylene oxide) (SPPO) series membranes. The conductive ...
Development of bipolar membrane-based process
Bipolar membrane Water dissociation Environmental engineering Clean production Energy sources
2016/3/25
Development of bipolar membrane-based process.
Fundamental studies of a new series of anion exchange membranes: membrane preparation and characterization
Anion exchange membrane Benzyl-substitution Aryl-substitution Amination Characterization
2016/3/25
Chemical cross-linking anion exchange series membranes were prepared from linear engineering plastics poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) by conducting the processes of bromination and aminat...
Sulfuric acid recovery from titanium white (pigment) waste liquor using diffusion dialysis with a new series of anion exchange membranes—static runs
Ion exchange membrane Diffusion dialysis Titanium white waste liquor Poly(2,6-dimethyl-1,4-phenylene oxide)
2016/3/25
In this paper, a new series of anion exchange membranes have been produced from linear engineering plastics poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) by conducting the processes of bromination, chl...
A mechanism on the drug release into a perfect sink from a coated planar matrix with a super-saturation loading in the core
Coated planar matrix Controlled release Mathematical analysis In-vitro release
2016/3/25
A comprehensive model is proposed to accurately describe drug release kinetics from a coated plane sheet when drug loading in the core is above its saturation level. The general solutions are acquired...
以N，N二甲基乙酰胺（DMAc）为溶剂，以氯化镍（NiCl2）和聚乙二醇（PEG）为添加剂，采用一步法和两步法2
种凝固浴方法制备PVDF/金属镍杂化膜，考察2种凝固浴法以及NiCl2和PEG的含量对PVDF/金属镍杂化
膜的亲水性、膜结构和力学性能的影响. 结果表明：NiCl2对PVDF膜的亲水性有明显的影响，PEG使得一步
法膜的水通量和亲水性有了显著提高；采用一步法，NiCl2 为8%...
大面积石墨烯薄膜转移技术研究进展
目标基片 中介物过渡转移 卷对卷转移
2015/5/12
化学气相沉积法合成的石墨烯薄膜在实现石墨烯产业化应用过程中,依赖于大面积薄膜转移技术的突破性进展。本文按照中介物过渡转移法、直接干法和湿法转移法、大规模卷对卷转移法分类介绍了现有的30多种石墨烯薄膜转移方法,从微观机理到宏观实现方法对比了三类方法的优缺点和适用范围:中介物过渡转移法主要用于实验室阶段科学探索,转移后的薄膜质量高但尺寸小;直接干法和湿法转移法减少了中介物过渡流程,但仍处于小试阶段;大...