Effect of natural exposure in space on the physicomechanical properties of fiberglass
| Autor: | L. A. Kvacheva, O. V. Startsev, G. M. Gunyaev, Yu. N. Ivonin, V. V. Mikhailov, E. F. Nikishin, M. I. Dushin |
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| Rok vydání: | 1983 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics General Mathematics Polymer Temperature cycling Atmospheric temperature range Condensed Matter Physics Biomaterials chemistry Mechanics of Materials Speed of sound Electromagnetic shielding Solid mechanics Ceramics and Composites Irradiation Adhesive Composite material |
| Zdroj: | Mechanics of Composite Materials. 19:144-148 |
| ISSN: | 1573-8922 0191-5665 |
| DOI: | 10.1007/bf00604215 |
| Popis: | 1. As a result of the action of ultraviolet and ionizing radiations and thermal cycling, partial destruction of the adhesive, which causes partial removal of the polymer from the irradiated surface, and a reduction of the dynamic moduli of elasticity and the speed of sound in the glasslike state are observed in KMU-3l. In the case of shielding of the fiberglass surface with a protective film, damage of the sample surface is eliminated. 2. Prolonged action of natural factors causes the appearance of additional transverse bonds due to the formation of reactive groups, a reduction of the internal stresses, and an increase in the structural uniformity of the adhesive, which results in an improvement of a number of physicomechanical indicators, an expansion of the temperature range of the work capacity, and a stabilization of the physicomechanical characteristics. 3. KMU-3l fiberglass on the whole preserves for 686 days a high level of physicomechanical characteristics and a work capacity over a wide temperature range. |
| Databáze: | OpenAIRE |
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