Weathering Properties of Engineering Plastics

Accelerated test results have been reported on several polymers including HOPE [46], PA 6,6 [47], and a cyanate ester resin/carbon fibre composite [48]. 

The effect on the life of a PP in which contains various coloured pigments is judged by comparing polymer life for the unpigmented and the pigmented polymers both alone and in conjunction with a UV stabiliser. 

In any discussion of the application of standard test piece exposure results to the prediction of the exposure life of an actual component, consideration must, of course, be given to geometric and environmental factors. The most important factors to be taken into account in estimating the outdoor service life of an article are  

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