Surface tension at a temperature range up to 300 °C may be determined with the high temperature dosing system G13. The system measures contact angle and surface/interfacial tension. The polymer is heated in a melting cylinder and drops – surrounded by a heating chamber – from a hollow needle. Within a few seconds the video measuring system DSA1 detects the drop contours and calculates the surface or interfacial tension. A polymer drop within a polymer matrix can be created within a controlled atmosphere. For optimal thermal conductivity special materials were selected. Together with the heating chamber G12 it is a useful supplement to the contact angle measuring systems G2 and G10.
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Further information cpp 252
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