Thermal damage polyester

A simple staining test which indicates mechanical, thermal and chemical damage to polyester fibres consists of staining with an oil dye dissolved in m-cresol, which according to Stratmann is also used to identify different polyester fibres (a more advantageous alternative with alcoholic potassium hydroxide is discussed in Section 8.4.1). 

Most purely thermal or hydrolytic damage will take place during melt processing of an aromatic polyester, so this chapter will concentrate on the means of preventing degradation and, due to the nature of these materials as condensation polymers, on ways and means of repairing degraded materials. 

Norwood LS, Marchant A (1981) Recent developments in polyester matrices and reinforcements for marine applications, in particular in polyester/kevlar composites. In Marshall IH (ed) Composite structures. Applied Science Publishers, New York, pp 158-181 O Brien TK, Raju IS, Garber DP (1986) Residual thermal and moisture influences on the strain-energy release rate analysis of edge delamination. J Compos Technol Res 8 37 7 Ogi K, Takao Y (1998) Effect of moisture on stress-strain response and damage evolution in quasi-isotropic laminates. J Jpn Soc Compos Mater 24(l) 20-29 Ogi K, Kim HS, Maruyama T, Takao Y (1999) The influence of hygrothermal conditions on the damage processes in quasi-isotropic carbon/epoxy laminates. Compos Sci Technol 59 (16) 2375-2382... 

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