Thermal Characteristics of High-Strength and Thermostable Aromatic Fibres

• Published in: Fibre chemistry Vol. 37; no. 5; pp. 346 - 351
• Main Authors: Perepelkin, K E, Pakshver, E A, Andreeva, I V, Malan'ina, O B, Makarova, R A, Oprits, Z G
• Format: Journal Article
• Language: English
• Published: New York Springer Nature B.V 01.09.2005
• Subjects: Polymers; Thermogravimetric analysis
• ISSN: 0015-0541; 1573-8493
• DOI: 10.1007/s10692-006-0006-3

The thermal characteristics of ten kinds of para-aramid, meta-aramid, polyoxadiazole, and polyimide fibres were investigated by dynamic thermogravimetric analysis, differential scanning calorimetry, and thermomechanical analysis. It was shown that thermooxidative degradation of these fibres begins at 400-450° C and is intensified at higher temperatures. These fibres are characterized by dimensional stability up to the temperature of onset of thermooxidative processes (up to 400-450°C) except for meta-aramid fibres, which exhibit approximately 5% shrinkage at high temperatures. With respect to thermal stability, the fibres are in the following order: polyimide > heterocyclic para-aramid and polyoxadiazole > carbocyclic para-aramid > meta-aramid.[PUBLICATION ABSTRACT]