By: Hudec Ivan, Jaśśo Michal, Krump Henrich, Cernák Mirkoand Suriová Viera
Abstract
In this paper different types of surface modification ofpolyester cords by low-temperature plasma at atmospheric pressure was studied.
The first type cords were activated by pulse surfacepositive corona discharge generated in a plasma reactor or by coplanardielectric surface barier discharge (DCSBD) in nitrogen or ambient air plasmaat atmospheric pressure. The values of the static and dynamic adhesion ofuntreated cords and the plasma treated cords demonstrated positive influence ofplasma surface treatment on the adhesion of cords to rubber. The mechanicalproperties were not significantly affected by plasma treatment.
The second type of plasma treatment involved themodification of cords by plasma polymerization in mixture of nitrogene withbutadiene. The plasma layer homogenously coated the cords surface. The resultsshove, that values of static and dynamic adhesion for plasma polymerisation oftreated cords are comparable with the standard chemical treatment based onresorcinol-formaldehyde latex (RFL).
From the study of the surface properties of the plasmatreated cords by SEM, AFM and XPS is evident that both chemical interactionsand morphological changes of the surface cord fibres are responsible for theimproved adhesion between treated reinforcing materials and rubber blend.
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