| Autor: |
Ushkov, V. A., Figovsky, O. L., Smirnov, V. A., Seleznev, V. A. |
| Předmět: |
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| Zdroj: |
Scientific Israel: Technological Advantages; 2017, Vol. 19 Issue 4, p52-64, 13p |
| Abstrakt: |
For the purpose of fire safe construction it is necessary to reduce fire hazards of of building materials, including polymer matrix composites. In the present work we have studied the thermal stability, flammability, fume evolution of epoxy matrix composites with different types and amounts of hardeners, fillers, plasticizers and fire retardants. It is shown that chemical composition of fillers has little effect on the flammability of epoxy composites when the content of mineral fillers is less than 45% by mass. Smoke formation decreases linearly with increasing the degree of filling. A correlation was found between the oxygen index and the combustibility index when tested by the ceramic pipe method in accordance with RU GOST 12.1.044. It is shown that to obtain low-combustible materials the oxygen index should exceed 31%. It has been established that the chemical structure of additive aromatic brominated fire retardants has practically no effect on flammability. It was found that the optimal concentration of industrial brominated fire retardants is 8-10% by mass. To reduce the flammability of epoxy composites, additive brominated fire retardants in the form of a solution in N,N-dimethyl-2,4,6-tribromoaniline have been proposed. The high efficiency of acetyl- and α-hydroxyethyl ferrocene as a smoke suppressor of epoxy composites is shown. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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