PRINCIPAL REPRESENTATIVES OF CARBORANESILOXANE POLYMERS AND THEIR PROPERTIES.

Abstract

Two members of the poly-m-carboranesiloxane family were selected for extensive testing to determine their ppotential in high temperature applications between 500 and 900 F. Efforts were concentrated on an insoluble raw gum which lends itself primarily to molding operations; its synthesis was developed into a routine operation. Volatile loss determinations, long term heat-aging studies, compression set tests, shrinkage and electrical property measurements were conducted on variably compounded vulcanizates. Their tensile strength and elongation could be improved by increased filled loading in conjunction with modified molding techniques. End use items such as O-rings and other seals, diaphragms and electrical connector inserts are now undergoing application testing. For coatings and related uses, a soluble viscous liquid form is best suited and can be easily applied on metals or fabrics from aromatic solvents. Curing does not require peroxides and is achieved between 300 and 600 F. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1968
Accession Number
AD0667831

Entities

People

  • Hansjuergen A. Schroeder

Tags

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Compression
  • Connectors
  • Electrical Properties
  • Elongation
  • High Temperature
  • Materials Science
  • Measurement
  • Molding Techniques
  • Moldings
  • O Rings
  • Peroxides
  • Physics
  • Polymers
  • Tensile Strength

Readers

  • Polymer Science and Engineering.
  • Systems Analysis and Design