ROCKET LINER PROGRAM

Abstract

Means of catalytically equilibrating stannosiloxane polymers to increase polymer chain length and of achieving effective curing of phenyl-containing stannosiloxane polymers were investigated. Thus far equilibration procedures employed which resulted in increased molecular weight and bulk viscosity of these polymers also resulted in apparently irreversible cleavage of silicon-oxygen-tin linkages. Curing experiments with phenyl-containing stannosiloxanes were encouraging. Copolymers having silanol functional groups along the chain yielded cured compositions having measurable tensile strength and extensibility upon heating after compounding with elemental sulfur, a silicon hydride, and inert fillers. Phenyl-containing copolymers having vinyl group functionality can be cured by the same procedure but cures are susceptible to air inhibition. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1962
Accession Number
AD0284194

Entities

People

  • A.l. Landis
  • S.b. Eglin

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Copolymers
  • Inhibition
  • Mechanical Properties
  • Molecular Weight
  • Physical Properties
  • Polymers
  • Tensile Strength
  • Viscosity

Readers

  • Aquatic Ecology
  • Organic Chemistry
  • Surface Coatings Technology.

Technology Areas

  • Microelectronics