| Autor: |
PAPAVA, G. SH., CHITREKASHVILI, I. A., GURGENISHVILI, M. B., GAVASHELIDZE, E. A., GELASHVILI, N. S., KHOTENASHVILI, N. S. |
| Předmět: |
|
| Zdroj: |
Oxidation Communications; 2023, Vol. 46 Issue 3, p644-654, 11p |
| Abstrakt: |
The effect of hardeners on the properties of cured epoxy polymers for the synthesis of polymers with enhanced thermal properties has been studied. The glycide ethers of polycyclic bisphenols synthesised by us were used as a diol component. Since the thermal and heat resistance of polymers, in addition to the chemical structure of bisphenols, also depend on the structure of the hardener used, amine hardeners of different chemical structure are used to improve the thermal performance of polymers, both thermal resistance and heat resistance. The influence of the chemical structure of these hardeners on the properties of epoxy polymers has been investigated. Cured epoxy polymers are characterised by high heat resistance. High heat resistance results are obtained by 4,4'-diaminodiphenylsulphone, benzidine, 4,4'-diaminodiphenyloxide and other aromatic diamines. Polymers obtained by curing with these hardeners are deformed in the temperature range 220-245°C. The use of the above hardeners gives high results in terms of heat resistance. In all cases, polymers obtained on the basis of these hardeners decrease in mass by 10% in the temperature range of 340-400°C. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
