Dissertation > Excellent graduate degree dissertation topics show

Preparation of Novel Flaky Alumina and Its Application in Pearlescent Pigment

Author: YuMin
Tutor: LinYangHui；GaoYu
School: Fudan University
Course: Chemical Engineering
Keywords: flaky alumina molten salt pearlescent pigment crystal growth
CLC: TQ622.1
Type: Master's thesis
Year: 2010
Downloads: 151
Quote: 2
Read: Download Dissertation

Abstract


The flaky alumina has been widely used in the fields of polymer, ceramic, pearlescent pigment because of its special plate-like structure and excellent physical and chemical properties. The flaky alumina was successfully prepared by the molten salt synthesis method, and measured by means of microscope, X-Ray diffraction, laser diffraction instrument and scanning electron microscope in order to investigate the factors in the process of preparation, such as alumina source, molten salts, temperature and time of calcination, seeds etc. It was found that flaky alumina powders with thickness of 200-500nm, diameter of 10-40μm and bigger than 40 in aspect ratio, could be synthesized at 1100℃for 5 hours when the mole ratio of Al2(SO4)3 to mixture molten salts (NaF:KF=1:1) was 10:1, and the additive amount of phosphate and titania were 1% and 1%(based on alumina by mol) respectively. The flaky alumina was also suitable for the use of pearlescent pigment after trial of coating TiO2 on it. The crystal growth mechanism of flaky alumina was also studied, which is useful to control the crystal growth of alumina in molten salts.

Related Dissertations

  1. Complexes of two iodine three Allylthiourea together Synthesis and Characterization of cadmium,O627
  2. The DAST crystal material synthesis and crystal growth,O782.1
  3. Phosphorus zinc germanium infrared crystal growth and properties of,O782
  4. Growth of CdWO4 Scintillation Crystals by Vertical Bridgman Process,O782
  5. Molten salt chlorination of titanium sponge production slag processing research,X758
  6. Fundamental Research on the Separation of the Multiple Components in the Sub-molten Salt Method for Processing Vanadium-slag,TF841.3
  7. Synthesis of ZnNb2O6 and ZnTa2O6 Ceramic Powders,TB383.3
  8. The Synthesis of Aluminate (Silicate) Materials by Molten Salt Process and Their Photoluminescence,TQ422
  9. Conversion of Potassium Chromate Intermediates into Sodium Chromate in the Cleaner Production of Chromium Compounds with Sub-Molten Salt Medium,TQ136.11
  10. Molten alkali (salt) decomposition of CFC-12 .,O643.3
  11. Different crystal form of calcium sulphate crystal growth studies,O614.231
  12. Controll Morphology of Mg（OH）2 in Flame-Retardance and Its Modification,O614.22
  13. The Application of a Novel Ternary Molten Salt in the Preparation of LiNi0.8 Co0.2O2 and LiNi1/3Co1/3 Mn1/3O2,TM912
  14. The Research of the LiNi1/3Co1/3Mn1/3O2 for the Cathode Material of Li-ion Battery,TM912.9
  15. Experimental Study of Pyrite Growth Mechanism,P618.31
  16. Anion doped KDP crystal growth and its performance impact,O782
  17. The Investigation of Preparation of Single-phase Nb3Sn by Electro-deoxidation of Nb2O5-SnO2 in the Molten Salt,TM263
  18. Synthesis and Application of New Photocatalyst for Wastewater Treatment,X703
  19. Preparation of Mn and Mn-Fe Alloy by FFC Cambridge Process,TF792
  20. Research on Heat Exchange System of New Aluminum Reduction Cell,TF821
  21. Technique Research on the Preparation of MgB2 Film Via Molten Salts Electrochemical Method,TG662

CLC: > Industrial Technology > Chemical Industry > Pigment Industry > Color pigments > Yellow,orange and red pigments
© 2012 www.DissertationTopic.Net  Mobile