{"id":5754,"date":"2020-02-04T10:45:37","date_gmt":"2020-02-04T09:45:37","guid":{"rendered":"https:\/\/www.elcowa.com\/antistatique\/solutions\/measuring-electrostatic-charges\/dissipation-of-charges\/"},"modified":"2024-06-14T17:09:18","modified_gmt":"2024-06-14T15:09:18","slug":"dissipation-of-charges","status":"publish","type":"page","link":"https:\/\/www.elcowa.com\/en\/antistatic\/innovative-antistatic-solutions\/measure\/dissipation-of-charges\/","title":{"rendered":"Dissipation of charges"},"content":{"rendered":"

ADACSPPI PROJECT<\/h1>
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<\/span><\/span><\/div><\/p><\/div>\n

Several years ago, we developed a protocol for car manufacturers called ADACSPPI or Analysis of the Conductive Agent Dispersion on the Surface of Plastic Injection Parts.<\/p>\n

ELECTROSTATIC PAINTING<\/span><\/h3>\n

Currently, the means used to paint a vehicle body and its accessories is electrostatic paint.<\/p>\n

An electrostatic field is created by creating a direct voltage between the grounded part and the spray gun. Paint particles charged with the same polarity move from the spray gun to the workpiece, collide with each other and are deposited evenly on the workpiece.<\/p>\n

This works for all electrically conductive parts.<\/p>\n

HOW TO DO FOR PLASTIC PARTS?<\/span><\/h3>\n

It is necessary to add in the material a conductive agent such as graphite or to coat the part with a conductive primer, but this represents an operation and an additional financial cost.<\/p>\n

In case of absence or poor distribution, there is a risk of “orange peel effect”.<\/p>\n

Non-quality has a cost and the manufacturer must know with certainty the quality of the part before painting.<\/p>\n

THE CURRENT SOLUTION<\/span><\/h3>\n
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  1. Measurement of surface resistivity<\/strong><\/li>\n<\/ol>\n

    The principle consists in measuring the electrical resistance on the surface of the part.<\/p>\n

    The method:<\/p>\n