THE DEVELOPMENT OF HEAT-RESISTANT PAINTS FOR METALS

Abstract

Coatings produced from zinc oxide and polyphosphoric acid did not resemble those produced from zinc oxide (ZnO), dimethyl hydrogen phosphite (DMHP), and ethyl acid phosphate (EAP). Coatings (ZnO-DMHP-EAP) cured above 55% relative humidity at 100 deg F were water resistant but not heat resistant, while those cured below 55% were heat resistant but not water resistant. At 136 deg F, the similar critical relative humidity value was earlier found to be 38%. water-resistant coatings prepared from ZnO-DMHP-EAP were more insoluble in water than coatings prepared from the same materials that were not water resistant. When the ZnO-DMHP-EAP coating material was dissolved in DMHP and the solution was applied to Al, a crusty layer was obtained. When the crust was removed, a surface coating remained that was heat resistant, water resistant, coherent, hard, and firmly bound to the aluminum.

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Document Details

Document Type
Technical Report
Publication Date
Aug 02, 1962
Accession Number
AD0283125

Entities

People

  • R. W. Liggett

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Chemical Synthesis
  • Chemistry
  • Coatings
  • Cold Water
  • Contracts
  • Humidity
  • Hydrogen
  • Materials
  • Materials Laboratories
  • Metals
  • Mixtures
  • Organophosphorus Compounds
  • Oxides
  • Phosphorus
  • Resistance
  • Water

Fields of Study

  • Materials science

Readers

  • Polymer Science and Technology
  • Surface Coatings Technology.