Influence of Water Absorption on Static Friction of Pure and Friction-Modified PA6 Polymers

In the present study, static coefficients of friction of pure and friction modified (FM) polyamide 6 (PA6) polymers against primer-coated steel surfaces were investigated under a series of nominal contact pressures and by considering the influences of water absorption by the polymer, temperature, co...

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Bibliographic Details
Published in:Key engineering materials 2019-04, Vol.799, p.59-64
Main Authors: Klien, Stefan, Ausserer, Florian, Voyer, Joel, Diem, Alexander, Velkavrh, Igor
Format: Article
Language:English
Subjects:
Adhesion
Ceramics industry
Coefficient of friction
Contact pressure
Friction
Inclusions
Lubrication
Polyamide resins
Polymers
Primers (coatings)
Static friction
Surface chemistry
Surface roughness
Water absorption
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Summary:In the present study, static coefficients of friction of pure and friction modified (FM) polyamide 6 (PA6) polymers against primer-coated steel surfaces were investigated under a series of nominal contact pressures and by considering the influences of water absorption by the polymer, temperature, counter-body surface roughness and lubrication conditions. Under the majority of the test conditions investigated, FM PA6 exhibited lower static friction than pure PA6. Under unlubricated conditions, this was due to the low adhesion of the FM PA6 provided by its friction modifying inclusions; while under lubricated conditions, a combination of softening due to water absorption and decreased adhesion provided by its friction modifiers enabled lower static friction, especially at medium and high contact pressures.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.799.59