Aging of certain polymers and ways of increasing their deformation resistance
Autor: | M. Z. Shteingart, P. V. Melent'ev, E. N. Petrov, L. N. Petrova |
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Rok vydání: | 1971 |
Předmět: | |
Zdroj: | Biomedical Engineering. 5:290-293 |
ISSN: | 1573-8256 0006-3398 |
Popis: | 1. Aging of the material of artificial dentures was investigated at room temperature, with immersion of the specimens in artificial saliva, and also in a medium under a load up to 50 kgf/cm2. 2. It was shown that natural aging of the material in air and with its immersion into a liquid simulating saliva has practically no effect on the deformation properties of the material. 3. When the material is kept under a constant compressive load simulating jaw pressure, its deformational properties change. 4. The addition of 10% PDI-4A to PMMA more than doubles the deformation resistance of the material. |
Databáze: | OpenAIRE |
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