The profiles shown are those of samples which have been heat treated at different temperatures between 25 and 450ºC. The profiles have been measured with a Point Range Sensor. The sensor measures distances by shining a laser beam on the surface of the sample and measuring the angle of reflection. The samples show considerable deformation especially at high temperatures. Some of the more pronounced and localized deflections are due to expansion of air bubbles trapped in the mix during dispersion.
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©CPRL, 1995