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Vorrichtung zum Ermitteln der Korrosivität einer Kunststoffschmelze

Device for determining the corrosivity of a plastic melt
 
: Steinhoff, Bernd; Kothe, Hans; Lellinger, Dirk

:
Frontpage ()

DE 102013203747 A1: 20130305
Deutsch
Patent, Elektronische Publikation
Fraunhofer LBF ()

Abstract
The device (1) has a housing having a cavity for filling the plastic material. A first electrode is made of a first material and a second electrode is made of a second material. The electrodes are respectively provided with a contact surface extended towards the cavity. The standard potential of first material is higher than standard potential of second material. The electrodes are configured for determining the electric current and/or electric voltage between the contact surfaces which are connected to each other through a measuring element. #CMT# : #/CMT# Independent claims are included for the following: (1) injection molding machine; and (2) method for measuring the corrosivity of plastic melt.

USE: Device for determining the corrosivity of a plastic melt, used in injection molding machine (claimed).

ADVANTAGE: The corrosivity of different plastic melts is determined in a simple manner at low cost. One output of the device is closed, so that the closure of another output of the device is opened and the flow of plastic melt into the device is prevented.

The drawing shows a schematic view of the injection molding machine with two outputs, where the first output is connected with device for determining the corrosivity of plastic melt. 1 : Device for determining the corrosivity of plastic melt 7 : Screw extruder 10 : Plastic melt 10a : Plastic granule 12 : Plastic injection mold.

The first material consists of copper, platinum, palladium, amorphous carbon, rhodium, iridium, nickel, silver, gold, iron or alloys. The second material consists of zinc or an iron alloy such as carbon steel.

: http://publica.fraunhofer.de/dokumente/N-311209.html