SEMI-INORGANIC HEAT RESISTANT ELASTOMERS BASED ON BORON.

Abstract

The preparation of high temperature resistant elastomers containing boron was attempted. A copolymer obtained from dimethyldichlorosilane and 1,1':2,2'-bis- (chloromethylsilylene) -bis 1,2-dicarbadodecaborane (12) cured into a resin. An air oven aged sample showed an equilibrium weight loss of 9 percent at 316C (40 hours) and 23 percent at 450C (2 hours). An elastomeric chain copolymer (MW 68,000) obtained from the reaction of bis (chlorodimethylsilyl) 1,7-dicarbadodecaborane with octamethyl cyclotetrasiloxane lost its elasticity after air oven aging 2.5 hours at 316C (weight loss 7.3 percent). (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1965
Accession Number
AD0626581

Entities

People

  • L. G. Wiedenmann

Tags

DTIC Thesaurus Topics

  • Body Weight
  • Copolymers
  • Elastic Properties
  • Elastomers
  • High Temperature
  • Macromolecules
  • Molecules
  • Polymers

Fields of Study

  • Chemistry

Readers

  • Polymer Science and Engineering.
  • Polymer Science and Technology

Technology Areas

  • Microelectronics