STUDY LEADING TO THE DEVELOPMENT OF REINFORCED HIGH TEMPERATURE ELASTOMERS

Abstract

Vinyl trichlorosilane modified silica gels were prepared. Ozonization of vinyl treated fillers was carried out. Several diphenyl chlorosilanemodified fillers with different termination groups were made. Surface area, swelling determination, weight-loss on silicone rubber together with mol. weight change during heat-aging were determined and are discussed in light of possible structural variations in filler performance. The triphenyl modified filler resulted in lowest wt. loss with the silicone ruber used. When 2.7 parts of the vinyl treated filler were used for the elastomer, tensile strength of 228 psi and elongation of 140% at 500 F. after 32 hrs aging at 500 F. resulted. When the unmodified filler was used as control, the elastomer had a tensile of 176 psi at 500 F. but the elongation was only 70%. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1962
Accession Number
AD0275335

Entities

People

  • K.c. Tsou
  • S. Makower

Tags

DTIC Thesaurus Topics

  • Body Weight
  • Elastomers
  • Elongation
  • Gels
  • High Temperature
  • Silica Gels
  • Silicon Dioxide
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Organic Chemistry
  • Polymer Science and Engineering.