Title: Surface pretreatment of plastics with an atmospheric pressure plasma jet - Influence of generator power and kinematics

Abstract

The industrial use of atmospheric pressure plasmas in the plastics processing industry has increased significantly in recent years. Users of this treatment process have the possibility to influence the target values (e.g. bond strength or surface energy) with the help of kinematic and electrical parameters. Until now, systematic procedures have been used with which the parameters can be adapted to the process or product requirements but only by very time-consuming methods. For this reason, the relationship between influencing values and target values will be examined based on the example of a pretreatment in the bonding process with the help of statistical experimental design. Because of the large number of parameters involved, the analysis is restricted to the kinematic and electrical parameters. In the experimental tests, the following factors are taken as parameters: gap between nozzle and substrate, treatment velocity (kinematic data), voltage and duty cycle (electrical data). The statistical evaluation shows significant relationships between the parameters and surface energy in the case of polypropylene. An increase in the voltage and duty cycle increases the polar proportion of the surface energy, while a larger gap and higher velocity leads to lower energy levels. The bond strength of the overlapping bond ismore » also significantly influenced by the voltage, velocity and gap. The direction of their effects is identical with those of the surface energy. In addition to the kinematic influences of the motion of an atmospheric pressure plasma jet, it is therefore especially important that the parameters for the plasma production are taken into account when designing the pretreatment processes.« less

Authors:

Moritzer, E., E-mail: elmar.moritzer@ktp.upb.de; Leister, C., E-mail: elmar.moritzer@ktp.upb.de ^[1]

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+ Show Author Affiliations

1. Kunststofftechnik Paderborn (KTP), University of Paderborn, Warburger Strasse 100, D-33098 Paderborn (Germany)

Publication Date:

Thu May 15 00:00:00 EDT 2014

OSTI Identifier:

22270968

Resource Type:

Journal Article

Journal Name:

AIP Conference Proceedings

Additional Journal Information:

Journal Volume: 1593; Journal Issue: 1; Conference: PPS-29: 29. international conference of the Polymer Processing Society, Nuremberg (Germany), 15-19 Jul 2013; Other Information: (c) 2014 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATMOSPHERIC PRESSURE; ELECTRIC POTENTIAL; MATERIALS WORKING; PLASMA JETS; PLASMA PRESSURE; PLASTICS; POLYPROPYLENE; PROCESSING; SUBSTRATES; SURFACE ENERGY; SURFACES; VELOCITY