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Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE (ENGLISH)   Spring 2003 , Volume 14 , Number 2; Page(s) 121 To 132.
 
Paper: 

SCANNING ELECTRON MICROSCOPY (SEM) STUDY OF ADVANCED PMR-X CARBON FIBER COMPOSITES AFTER HIGH TEMPERATURE EXPOSURE

 
 
Author(s):  RANGIE M.*
 
* 
 
Abstract: 
Degradation behavior of near resin. Epoxy sized and unsized carbon fibers in polyimide matrix were investigated. Degradation of neat resin and unidirectional laminates (0__8 and 0__6) were investigated at temperatures between 470°C - 650°C By using SEM technique, voids formation in neat resin, transverse cracking and microcracking at fibre-matrix interface were investigated. The results showed that PMR-X composites are more stable in an inert atmosphere (nitrogen atmosphere) than in air, degradation of PMR-X near resin is accompanied by volatilization and microcrack formation at longitudinal and transverse direction of fiber-matrix interface within composite panels. However, it was concluded that there is good adhesion between fiber and matrix in epoxy sized composites.
 
Keyword(s): ADVANCED COMPOSITES: SIZED AND UNSIZED CARBON FIBERS: POLYIMIDES; PMR-X; SEM; DEGRADATION
 
References: 
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