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A thermomechanical analysis (TMA) technique is presented for the measurement of the glass transition temperature (T g ) of glassy pitch materials. Pitches with varying mesophase content have been used for the T g determination. In this technique, the linear expansion of a mesophase pitch sample with respect to temperature is determined by means of a dilatometer. The change in the...
The formation of porosity during heat treatment of an extruded mixture of coke particles and a binder pitch was investigated using image analysis of polished cross-sections of shaped samples. The porosity due to pitch devolatilisation takes place during a rather narrow interval of temperature when the sample is heated at 12 K/hour. Only a small fraction of pores is formed when the shaped sample...
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