Thermal Characteristics of Para-Aramid Fibres
2003
Comparative studies of the thermal characteristics of para-aramid fibres (Armos, Rusar, Terlon, Twaron, and Kevlar) were conducted using thermomechanical analysis (TMA), dynamic thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). According to the TMA data, the para-aramid fibres studied are characterized by dimensional stability up to temperatures of 400-450°C; shrinkage or spontaneous elongation does not exceed 0.5-1%. TGA and DSC revealed the temperature characteristics of the para-aramid fibres corresponding to the occurrence of thermooxidative degradation. These processes begin at 400-450°C and are accompanied by shrinkage; 4% weight loss takes place at temperatures above 490-500°C.
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