RESEARCH AND DEVELOPMENT OF HIGH TEMPERATURE STRUCTURAL ADHESIVES

Abstract

Physical properties and oxidation resistances of silicone-phenolic laminates, which were pyrolyzed in the presence of ammonia at 1500 F, were in ependent of the treatment. A 1200 and 1800 F THE PRESENCE OF A MONIA APPEARED TO BE DELETERIOUS. I creased heating rate during the construc ive pyrolysis improved the oxidation stability of pyrolyzed specimens, but lowered the flexural strengths and moduli. Constructive pyrolysis increased the oxidation stability of titanium tetraphenoxyl/aldehyde laminates on ''E'' glass, but failed to improve the laminates on carbon cloth. Antimony thioantimonate, Sb(III)Sb(V)S4, cured epoxy-novolac adhesive had a tensile shear strength of 315 psi after 60 minutes at 1000 F. Reaction of phenol with sulfur dichloride yielded low molecular weight polymers with expected hydroxyphenylsulfide structure. However, from the reaction of p-bromophenol with sulfur dichloride under the same conditions mostly dimer was isolated. Attempts to synthesize triphenoxy arsine failed due to the apparent hydrolytic instability of the compound. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1962
Accession Number
AD0283974

Entities

People

  • Harold H. Levine
  • Sven H. Ruetman
  • Wolfgang J. Wrasidlo

Tags

DTIC Thesaurus Topics

  • Adhesives
  • Flexural Strength
  • High Temperature
  • Laminates
  • Mechanical Properties
  • Molecular Weight
  • Oxidation
  • Oxidation Resistance
  • Physical Properties
  • Pyrolysis
  • Resistance
  • Shear Strength

Fields of Study

  • Chemistry

Readers

  • Organic Chemistry
  • Polymer Science and Engineering.