Dissertation > Excellent graduate degree dissertation topics show

Preparation of Photo-and Thermo-chromic Composite Materials and Their Application Research

Author: TianQingZuo
Tutor: YangYaJiang
School: Huazhong University of Science and Technology
Course: Chemical processes
Keywords: photochromism reversible thermochromism polymer film hot-pressure printing film anti -counterfeit
CLC: TB34
Type: Master's thesis
Year: 2011
Downloads: 182
Quote: 0
Read: Download Dissertation

Abstract


Ultraviolet fluorescent polymeric material is a kind of polymer that can’t show its fluorescent characteristic under visible light but can emit visible light when exposing to ultraviolet light. Thermochromism polymer is a kind of polymer whose color changed with the temperature. Both of these can be used as anti-counterfeit materials separately. But how to make full use of the merits of these two polymers and prepare photo-and thermo-chromic composite materials is a more promising way in Modern Anti-counterfeit Printing Technology.In this thesis we use polymers as reaction medium. Combine with laser holographic anti -counterfeit hot-pressure printing film Technology to prepare a new anti-counterfeit material that easy to detect. This thesis is consisted of two sections as follows:(1) Crystal violet lactone and bisphenol A are used as electron acceptor and donator respectively, polystyrene and acrylic resin are used as reaction medium, rare earth metal organic complex is used as fluorescent material to prepare photo-and thermo-chromic composite material. Its photochromism and thermochromism performance are detected by UV lamp and hot water respectively. When exposing under ultraviolet lamp, the composite material emit red fluorescent light, when douse by hot water(>70℃), the color of the composite material changed from blue to colorless. The influences of each component are also be discussed in this chapter.(2) Combing photo-and thermo-chromic composite material with laser holography Anti–counterfeit trademarks, PET Transfer Method is used to prepare photo-and thermo-chromic laser holography anti -counterfeit hot-pressure printing film. Its photochromism and thermochromism performance are also detected by UV lamp and hot water respectively. When exposing under ultraviolet lamp, the composite material emit red fluorescent light, when douse by hot water(>70℃), the colour of the composite material changed from blue to colorless. The influences of each technological parameters to the film and the cost are also discussed in this paper. To the same level of thermochromism and photochromism, our optimized hot-pressure printing film need only 1/30 ultraviolet fluorescent powder compared to former hot-pressure printing film, which greatly reducing the cost.

Related Dissertations

  1. The Properties and Synthesis of Photochromic Indole-Substituted Fulgides,O626
  2. Size-dependent Photochromic and Holographic Storage Properties of Ag/TiO2 Nanocomposite Film,TB383.2
  3. Synthesis and Properties of Photochromic Materials Based on Silole and other Diarylethene Compounds,O621.2
  4. Load balancing technology in the control system security,F812.42
  5. The Synthese and Feature of Two Novel Spirooxazine Decorated with Photoelectric Chrom,TB34
  6. Synthesis and Structure Identification of Photochromic Bisspirooxazine and Oxazine,O626
  7. Photochromism of the Modified Hyperbranched Poly(Amide-ester),O631.3
  8. The Legal Thought of Prevention and Control of Fake and Inferior Commodities,D923.8
  9. Research on Digital Watermarking Technique in Notes and Packaging Anti-forge,TP309.7
  10. Synthesis and Properties of New Unsymmetrical Diarylethenes Bearing a Thiazole/Isoxazole Moiety,O621.3
  11. Synthesis of Photochromic Diarylethenes Bearing a Benzothiophene /Benzofuran Moieties and Investigation of Their Optoelectronic Properties,O621.3
  12. Fabrication and Photochromic Properties of Pyrazolone Derivatives and Pyrazolone/ Polymer Composite Film,O631.3
  13. A Study on the Proposed Watermark Technique for Anti-counterfeit Based on Hadamard Transform Implemented by DSP,TP309.7
  14. The Research on Optical Storage Characteristics of Ag/TiO2 Nanocomposite Films Based on Surface Plasmon Resonance Absorption of Ag Nanoparticles,TB383.1
  15. Synthesis, Photochromic Properities and Molecular Logic Switches of Schiff Base Containing Pyrazolone,O626.2
  16. Preparation of Nitrogen-doped TiO2 and Photoelectrochromic Properties of TiO2-xNx/NiO Double-layer Films,O484.4
  17. Preparation and Photochromism or Thermochromism of Azo Shiff’s Compounds,O626
  18. Fabrication and Characterization of Inorganic Compounds/Polymer Nanometer Hybrid Photochromic Nanobelts by Electrospinning,TB383.1
  19. Research on New Method of Measuring Parameters of Laser Holographic Anti-Counterfeiting Labels,O438
  20. A Study of Receiver Chip in Optical Up-conversion Anti-counterfeit Detection Integration Device,TN492
  21. Study on Molecular Sieve/PP Blend Spinning Fiber,TQ340.1

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Functional Materials
© 2012 www.DissertationTopic.Net  Mobile