Evaluation of Adhesives for Sealing Metallic and Plastic Films for Use at Liquid-Hydrogen Temperatures,

Abstract

An experimental investigation was conducted to evaluate the ability of 15 different adhesives to provide a hermetic seal in lap joints between thin metallic foils and plastic films in the presence of gaseous and liquid hydrogen. The lap joints were tested in a manner that provided a pressure difference of 20 pounds per square inch through the adhesive bond line but did not subject the joint to any mechanical stresses or loads. Each adhesive was tested at room, liquid-nitrogen (-32O F), and liquid-hydrogen (-423 F) temperatures. The adhesives tested are commercially available and included epoxy- polyamines, nylon-filled epoxies, urethanes, polyesters, and rubber based adhesives. In general, the most satisfactory adhesives system for sealing aluminum to aluminum, Mylar to Mylar, and Mylar to aluminum at cryogenic temperatures are the epoxies. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1965
Accession Number
ADA306200

Entities

People

  • Francis J. Devos
  • Harley L. Stutesman
  • Paul T. Hacker

Organizations

  • National Aeronautics and Space Administration

Tags

DTIC Thesaurus Topics

  • Adhesives
  • Aluminum
  • Amines
  • Elements
  • Hermetic Seals
  • Hydrogen
  • Liquid Hydrogen
  • Nitrogen
  • Polyesters
  • Test And Evaluation
  • Urethanes

Readers

  • Materials Science and Engineering.
  • Polymer Science and Engineering.
  • Thermal Physics or Thermal Science.