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Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE (ENGLISH)   Spring 2003 , Volume 14 , Number 2; Page(s) 39 To 50.
 
Paper: 

THERMOGRAVIMETRIC ANALYSIS (TGA) AND THERMAL DEGRADATION BEHAVIUOR OF ADVANCED PMR-X CARBON FIBER COMPOSITES

 
 
Author(s):  RANGIE M.
 
* 
 
Abstract: 
Thermal degradation behavior of sized and unsized carbon fibers in polyimide matrix was investigated. Degradation of neat resin and unidirectional laminates were investigated by thermogravimetric analysis (TGA) technique at temperatures between 470°C-650°C and up to 250 hrs. Isothermal ageing of the PMR-X composite samples under different test conditions (i.e different temperatures and prolonged aging times). Showed that oxidation and degradation occurs in stages at three different rates. Thermogravimetric analysis (TGA) showed that the cured PMR-X composite panels are more stable in an inert atmosphere (nitrogen atmosphere) than in air and the degradation of neat resin is much higher than the composite samples. However, the rate of degradation of the unsized untreated carbon fibers in nitrogen environment is much higher than that for the PMR-X composites containing sized fibers.
 
Keyword(s): ADVANCED COMPOSITES; SIZED AND UNSIZED CARBON FIBERS; POLYIMIDES; PMR-X; TGA ISOTHERMAL DEGRADATION
 
References: 
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