Monitoring of resistance in polymers

G - Physics – 01 – N

Patent

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G01N 27/04 (2006.01) G01N 33/44 (2006.01)

Patent

CA 2223084

A method for detecting extent of cross-linking of a high impedance polymer material during a pre-cure state, the method including: placing an insulated ground plane (51) adjacent to the polymer material and substantially parallel to a sensor (32); applying a test signal through a sensor to the material and through a reference resistance; determining a voltage difference between the test signal applied to the material and the reference resistance as the reference voltage; and correlating the voltage difference as a relative indicator of the extent of cross-linking which has occurred within the polymer material. Also disclosed is a device for implementing the subject method.

Un procédé de détection de l'étendue de la réticulation d'un matériau polymère à haute impédance pendant une étape de précuisson consiste à placer un plan de masse isolé (51) adjacent au matériau polymère et sensiblement parallèle à un détecteur (32); à appliquer un signal test par l'intermédiaire du détecteur au matériau polymère et au travers d'une résistance de référence; à déterminer une différence de tension entre le signal test appliqué au matériau polymère et la résistance de référence en tant que tension de référence; et à corréler la différence de tension sous la forme d'une indication relative de l'étendue de la réticulation qui s'est produite dans le matériau polymère. L'invention décrit également un dispositif permettant de mettre en oeuvre le procédé.

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