Dissertation > Excellent graduate degree dissertation topics show

Composition and properties of fluorine resin coating PVDF

Author: SuDi
Tutor: LuHongBin
School: Fudan University
Course: Chemical Engineering
Keywords: PVDF coating fluorine resin
CLC: TQ630.7
Type: Master's thesis
Year: 2011
Downloads: 346
Quote: 1
Read: Download Dissertation

Abstract


In this paper the effect of component part and preparation and application process on polyvinylidene difluoride (PVDF) coatings was studied, the results provided the basis for PVDF coatings ratio and preparation technology design.Some problems often affect the performance of PVDF coatings, for example coating thixotropy increasing, coating cosmetic defects, unstable weatherability, burnish fluctuations, etc. By studying the miscibility of the solvent and PVDF resin, acrylic resin and PVDF resin, temperature change during the preparation, cooling in different ways, comparing pigment weathering, the mechanism related factors had been identified.It was found that PVDF resin dispersion is the low-viscosity when the ketone and ester as dispersing medium by comparing viscosity and thixotropy of various solvent dispersions. PVDF dispersion to isophorone as a dispersing medium receives lower viscosity and smaller thixotropy, which is more conducive to PVDF coatings roller application.Acrylic resin composition in PVDF coatings was studied. According to competition theory of hydrogen bonding the PVDF resin/acrylic resin mixture viscosity fluctuations were analyzed and discussed. Experiments showed that the compatibility impact of the PVDF resin depend on acrylic resin composition. With the increasing content of hydrogen bond donors in the acrylic resin structure, the miscibility of Acrylic resin/PVDF dispersion was decreased. PMMA resin is the best material compatibility. While adding other strong hydrogen bond donors, the hydrogen bonds between PVDF resin and acrylic resin will be destroyed, so that the viscosity and thixotropy was increased dramatically.Weathering of some pigments in PVDF coatings was researched by artificially accelerated aging test. Pigment volume concentration, hiding power, and light resistance can cause poor weatherability.The coating performance influenced by cooling method after the baking process was studied. PVDF resin cooled at different rates has different crystal. The PVDF coatings cooled by water that mainly contains the Crystalβhas a high gloss and cooled by air that mainly contains the Crystal a has a low gloss. The two kinds of Crystal also caused the difference in gloss retention. Comparing a variety of temperature the viscosity of dispersion was found paint rheological behavior mutation when the temperature is higher than 70℃, the viscosity increased rapidly, affecting the coating properties of PVDF coatings.By studying the solvents, resins, pigments., preparation temperature and cooling method, the mechanism of various factors was summed up, which can adjust the coating formulation and process design to improve the coating performance and the application performance of PVDF coatings.

Related Dissertations

  1. Preparation of Micro-Arc Oxidation Ceramic Coating on Mg Alloy and the Research of Galvanic Corrosion,TG174.453
  2. The Effect of Current Density and Electric Field on Ni and Its Alloy Electrodeposition for Copper Crystallizer,TQ153.2
  3. A Study on the Electrodeposition of Zn-Co and Zn-Ni Alloys in the Reline Room Temperature Ionic Liquid,TQ153.1
  4. Preparation and Anticorrosion Properties of Doped Polyaniline/Epoxy Coating,TQ637
  5. Preparation and Performance of V2O5-WO3/MOx/Cordierite Catalyst Modified with Cu、Mn、Ce for DeNOx,X701
  6. LSGM electrolyte thin films and electrochemical properties of,TM911.4
  7. Anti-corrosion Property of Flake Zinc Epoxy Coating Doped with Rare Earth in SRB,TQ630.1
  8. Research on PSA/Cotton Blend Fabric of Coatinging of Water Resistance and Moisture Permeability,TS195.6
  9. Study on Chitosan-Based Composiate Nano-Coating Dope and Its Effect of Fresh-Keeping for Coated Egg,TS253.2
  10. Development and Application of Biological Seed Coating Formulation for Soybean,S565.1
  11. Preparation of polyaniline nanostructures , characterization and biomedical applications,TB383.1
  12. Research on Microstructures and Properties of FeMnCrNiAlBSi/Cr3C2 Coatings,TG174.44
  13. Studies of Plasma Spray Metal-Ceramic Compounds Coatings on Q245r Steels,TG174.44
  14. Investigation of Plasma Sprayed NiCr-Cr3C2 Coating on Mould CrZrCu Alloy Plates,TG174.442
  15. Architectural membrane modification and UV coating properties,TU561.6
  16. Effect of Hydrophobic Modification of the Flame Retardant on the Properties of the Water-borne Intumescent Fire Retardant Coatings,TQ637
  17. Preparation and Oxidation Resistance of SiC/γ-Y2Si2O7 Double-layer Coating on C/C Composites,TB332
  18. Preparation of the Composite Coatings on the Carbon Steel Surface and Their Anticorrosion Properties in Seawater,TG174.4
  19. Study on Ni-based Tenacious Wear-resistance Gradient Coating In-situ Prepared by Laser on the Surface of Crystallizer Copper Alloy,TF777
  20. Optical Parametric Oscillator and Its Frequency Doubling to Achieve Three Primary Colors RGB Solid-state Lasers,TN248
  21. Research of Properties and Preparation Technology of Multiphase Ceramic Coating with Reactive Flame Spraying Process on AZ31B,TG174.44

CLC: > Industrial Technology > Chemical Industry > Paint Industry > General issues > Coating products
© 2012 www.DissertationTopic.Net  Mobile