Dissertation > Excellent graduate degree dissertation topics show

The Synthesis and Characterized of Modified ZnO-based Organic Thermal Control Coating

Author: ZhouBo
Tutor: LiChunDong
School: Harbin Institute of Technology
Course:
Keywords: thermal control coating modified ZnO-based white paint opticalproperties
CLC: V255.5
Type: Master's thesis
Year: 2012
Downloads: 37
Quote: 0
Read: Download Dissertation

Abstract


As an essential part of spacecraft’s thermal control system, thermal controlcoatings are being widely used. The organic thermal control white paint hasexcellent properties, but it needs improvements on its space stability and quality.Therefore, doing research on light and live-long organic thermal control white paintis specially meaningful.This passage uses domestic methyl terminated silicone resin, imports of methylterminated silicone resin, ZnO and modified ZnO powder as main raw materials.Discuss the synthesis process of new modified ZnO-based organic thermal whitepaint, and research the mechanism of radiation damage of above-mentionedZnO-based organic white paint after90keV proton irradiation.The test proves that modified ZnO-based organic thermal white paint whichuses self-made modified additives and modified ZnO powder as main raw materialsand domestic methyl terminated silicone resin as adhesives has optimalcomprehensive performance. The analysis and results before and after the irradiationshow that the organic thermal white paint which compounded by domestic methylterminated silicone resin and modified ZnO powder not only has good processperformance as film hardness, matrix adhesion, but also has well initiative opticalproperties（αs≤0.2）and radiation stability. After the injection quantity of90keVproton irradiation,△sof ZnO-based organic white paint eliminates to0.12. Thestability improves almost50%compared to ordinary ZnO white paint. The mainreason why the performance of ZnO-based organic thermal white paint degrades isthat ZnO has defection during the irradiation, according to analysis of Spectralsub-meter, FTIR spectrum and PL spectrum. Modified ZnO powder can effectivelyeliminates the variations and quantities of irradiation defects such as oxygenvacancy and zinc tim gap.This either improves the proton irradiation stability ofZnO powder, or effectively reduces absorb oxygen content in coating system, so asto lower the damage to the chemical bond in adhesives.Through the establishment of the three factors and three levels orthogonalexperiment and calculation of the critical volume of ZnO pigment concentration,finally confirm the optimal synthesis process of modified ZnO organic white paint.

Related Dissertations

  1. The Study of Temperature Distribution and Its Effects on Image Shifting of the Star Sensor Optics System,V448.2
  2. Study on Synthesis and Characterization of Organic Terahertz Sensitive Materials,O441.4
  3. Effect of Metal (Cu、Al、Ti) Doped ZnO Films on Mircrosturctural and Optical Properties,O484.1
  4. Preparation and Characterization of BixFeO3（0.80≤x≤1.20） Thin Films,O484.1
  5. Investigation on Preparation and Characteristics of Metal-Doped Cu3N Films Deposited by Reactive Magnetron Sputtering,O484.1
  6. Study on the Impact on Optical Properties of Yag:Ce3+ via Different Crystals Al2O3and the Preparation Process,O611.4
  7. Synthesis and Optical Properties of Self-asembled2D Layered Organic-inorganic Perovskites for Optoelectronics,O611.3
  8. Design,Synthesis and Properties of Nitrogen Bridge-head Heterocycles,O621.25
  9. Fabrication and Application Research of Microcapsules of Phase Change Materials,TB34
  10. Investigation on the Synthesis,Microstructure and Optical Properties of One-dimensional KTa1-xNbxO3Nanomaterial,TB383
  11. Research on Preparation, Characterization and Growth Mechanism and Spectroscopic of Based-Zn Nanomaterials,TB383
  12. The Electronic Structure and Optical Properties of Impure Graphene Nanoribbons,TB383
  13. Study on Preparation and Properties of Sn-doped ZnO Transparent Conductive Oxide Thin Films,TB383
  14. Electronic Structures and Optical Properties of Metal(Cu,Ag,Au):MgF2Crystal,TG111.1
  15. Theoretical and Experimental Research on Cu（InxGa1-x）Se2and Cu2ZnSn（S/Se）4Solar Cell Thin Films,TM914.4
  16. Preparation and Optical Properties Research for Doped Zinc Oxide Nanopowders,TN304
  17. Research on Absorption Properties of Atmospheric Aerosol Based on Photoacoustic Spectroscopy,O433.1
  18. Electronic Structures and Optical Properties of Copper-based Multinary Semiconductors,O472
  19. TiO2Nano Thin Film Deposited by Frequency Reactive Magnetron Sputtering and Treated by Laser Irradiation,O484.41
  20. Research on Characteristics of Germanium and Metal-Doped Germanium Films Deposited by Magnetron Sputtering,O484.1
  21. Tissue Optical Properties Characterization Based on the Phase Contrast Microscope,Q-336

CLC: > Aviation, aerospace > Aviation > Aerospace materials > Polymer materials > Coatings, paints
© 2012 www.DissertationTopic.Net  Mobile