The effect of test variables and extrusion conditions on heat deflection temperature of PVC |
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Authors: | Elvira B. Rabinovitch |
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Abstract: | It is commonly expected that the heat deflection temperature of finished plastic products will match the values, reported by the material supplier. However, in practice, a significant deviation from the published data is frequently observed. This paper gives insight into the reasons for such a discrepancy. It presents information on the effect of the test variables, such as load, sample conditioning, sample flatness and extrusion conditions, such as: melt temperature and draw-down (internal stresses), on heat deflection temperature of rigid PVC. |
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