Structure and Properties of Polymers and Organosilanes Adsorbed Onto Oxidized Aluminum and Titanium.

Abstract

The structure of films formed by gamma-aminopropyltriethoxysilane (gamma-APS) adsorbed onto titanium, iron, and aluminum from aqueous solutions was determined and related to the effectivess of the silane as a primer for improving the hydrothermal stability of metal-to-metal adhesive joints. In all cases gamma-APS was adsorbed as highly hydrolyzed oligomers and then condensed during drying on the metal surface to form siloxxane polymers. However, the oxidized surfaces of aluminum and, to a slight extent, iron were etched in aqueous solutions of gamma-APS at pH 10.4, resulting in the inclusion of metal ions in the adsorbed films. Some evidence for the formation of aluminosiloxane polymers during adsorption of gamma-APS onto aluminum substrates at pH 10.4 was obtained.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1982
Accession Number
ADA117814

Entities

People

  • F. James Boerio

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Adhesives
  • Aging (Materials)
  • Bonding
  • Failure Mode And Effect Analysis
  • Fiber Reinforced Composites
  • Hydrothermal Aging
  • Infrared Spectra
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Plastics
  • Polymers
  • Reinforced Plastics
  • Spectra
  • Thin Films

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Polymer Science and Technology
  • Surface Coatings Technology.