SIB POLYMER DEVELOPMENT.
Abstract
Further studies with the recently discovered 'offratio' SiB-2 rubber confirmed that it is possible to make a SiB elastomer with 1,000 to 1,200 pounds tensile strength, although this species leaves something to be desired in heat resistance. A particularly interesting SiB representative was included in our investigation since the last report. Chemically it is a phenyl substituted SiB-4 polymer which can be obtained not only in the usual rubbery form but also as a viscous stock. Vulcanizates from this latter material exhibit outstanding heat-aging resistance surpassing the performance of any rubber we have seen so far. In addition, it was found to be still flexible as -80F, thus indicating a wide range of elasticity. The investigation of antioxidants such as ferric oxide, tungsten oxide and ferrocene was intensified. The two oxides, especially, impart noteworthy resistance to deterioration of the polymers at elevated temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 19, 1965
- Accession Number
- AD0624544
Entities
People
- H. A. Schroeder
- O. G. Schaffling