Influence of surface roughness on the tribo-electric process for a sliding contact between polymeric plate materials

Polymers are used in many industrial applications due to their good mechanical and thermal properties. Studies have shown that electrical insulators, such as the polymers, are generating electrostatic charge by frictional contact. This tribo-charging effect influences de sliding conditions, and the...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-02, Vol.174 (1), p.12003
Main Authors: Neagoe, M B, Prawatya, Y E, Zeghloul, T, Dascalescu, L
Format: Article
Language:English
Subjects:
ABS resins
Acrylonitrile butadiene styrene
Contact pressure
Electric contacts
Electrostatic charge
Engineering Sciences
Industrial applications
Insulators
Mechanics
Mechanics of materials
Polymers
Polyvinyl chloride
Sliding contact
Surface roughness
Thermodynamic properties
Tribo charging
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Summary:Polymers are used in many industrial applications due to their good mechanical and thermal properties. Studies have shown that electrical insulators, such as the polymers, are generating electrostatic charge by frictional contact. This tribo-charging effect influences de sliding conditions, and the level of charge depends of several factors. The aim of this paper is to validate two paradigms: (I) the electrostatic charge increases with contact pressure; (II) the level of charge is influenced by the number of contact points on the surface. The tribocharging experiments were carried out with samples cut from two polymers: Acrylonitrile-Butadiene-Styrene, 5 mm x 15mm x100 mm, roughness: Ra = 0.4 µm; and Polyvinyl Chloride, 5 mm x 50 mm x 180 mm, with various roughness values: Ra = 3-12 µm and RSm = 150-350 µm. The modification of asperity density was accompanied by changes in the electric potential measured at the surface of the PVC samples. Thus, its average value V increased from -0.33 to -0.85 kV, and its maximum value Vmax, from -1.56 to -4.83 kV.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/174/1/012003