Three predictive models are tested against soil thermal conductivity data at high temperatures: two (deV-1 and deV-2) are modi"cations of the original de Vries model, and the third is the Gori model. Model deV-1 results correlated very closely for 30, 50 and 703C, and moderately close for 903C. Gene
Thermal stability of elastomeric networks at high temperatures
β Scribed by T. C. P. Lee; L. H. Sperling; A. V. Tobolsky
- Publisher
- John Wiley and Sons
- Year
- 1966
- Tongue
- English
- Weight
- 281 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0021-8995
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β¦ Synopsis
Stress relaxation experiments were carried out in a dry nitrogen atmosphere on polydimethylsiloxane and an ethylene-propylene terpolymer. Relaxation times much longer than expected were observed, and plots of In f(t)/f(O) versus time were linear in all cases.
π SIMILAR VOLUMES
The copolymerization method of immobilization was used to obtain preparations of enzymes covalently incorporated in polyacrylamide gel. They possess properties making them suitable for practical use. First, the preparations are hundreds of times more stable against irreversible thermoinactivation th