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PLASMA POLYMERISATION IN AN EXTRUSION PLANT

Objective


This project achieved its goal of improving the general base of information about the plasma polymerization process. Coloured and transparent PVC types show poor UV and weathering stability, even when special stabilizers are added. Definition of a coating which increases plasma polymerized stability is an important step in improving the properties of these materials.
THE FIELD OF SURFACE TECHNOLOGY IS DEVELOPING FAST IN THE LAST YEARS. THE QUESTIONS OF INCREASING DEMANDS ON, FOR EXAMPLE, PRODUCT QUALITY AND DURABILITY CAN PARTLY BE ANSWERED BY ENHANCED SURFACE PROPERTIES. A VERY NEW TECHNIQUE TO GET A HIGH QUALITY SURFACE IS THE PLASMA POLYMERIZATION.

A PLASMA IS A GAS WITH A HIGH FREQUENCY INDUCED HIGH CONCENTRATION OF POSITIVE IONS AND FREE ELECTRONS. MAINLY THE HIGH ENERGETIC ELECTRONS OFFER THE ABILITY TO CUT CHEMICAL BONDINGS AND TO INITIATE REACTIONS. WHEN AN ORGANIC MONOMER IS INTRODUCED TO A PLASMA THE PLASMA POLYMERIZATION CAN TAKE PLACE. THE POLYMER RESULTING FROM SUCH A PROCESS IS HIGHLY CURED AND HAS THEREFORE EXCELLENT MECHANICAL PROPERTIES. MOREOVER VERY THIN LAYERS DOWN TO SOME MICROMETRES CAN BE REALIZED WITHOUT PIN-HOLES.

USING THIS TECHNIQUE PLASTICS AS WELL AS METALS CAN BE PROVIDED WITH AN ORGANIC LAYER. IN THIS PROJECT THE ONLINE COATING OF EXTRUDATES BY MEANS OF PLASMA POLYMERIZATION WILL BE TESTED AND THE PROPERTIES OF THE SURFACES WILL BE EXAMINED. TO REALIZE THE PROJECT A MACHINERY CONSTRUCTOR, AN UNIVERSITY INSTITUTE AND A SMALL EXTRUSION ENTERPRISE ARE WORKING TOGETHER. AT THE MOMENT THIS SEEMS TO BE THE FIRST ATTEMPT TO USE PLASMA POLYMERIZATION IN AN EXTRUSION LINE.

Funding Scheme

CSC - Cost-sharing contracts
Leaflet | Map data © OpenStreetMap contributors, Credit: EC-GISCO, © EuroGeographics for the administrative boundaries

Coordinator

Battenfeld Extrusionstechnik GmbH
Address
Königstraße 45-53
32547 Bad Oeynhausen
Germany

Participants (2)

AACHEN UNIVERSITY OF TECHNOLOGY
Germany
Address
Templergraben 55
52056 Aachen
Aspa Plast Hellas SA
Greece
Address

18536 Pireaus