The present study investigates the friction coefficient and electric static charge generated from sliding of foot wearing socks against indoor flooring tiles. The static friction coefficient displayed by foot wearing socks of different textile materials under dry sliding was investigated. Floor tiles of ceramics, flagstone, parquet, parquet ceramics, marble, porcelain and rubber were tested as floor materials. The experimental results showed that, there is an increasing demand to establish codes for the intensity of electric static charge generated from the friction of floors. Rubber floor displayed the highest friction values, while marble showed the lowest ones. Porcelain generated the highest electric static charge followed by ceramic, rubber, flagstone, parquet, parquet ceramic and marble. When mixing polyamide of positive charge with lycra of relatively negative charge as socks textiles, the intensity of the electric static charge generated from friction decreased. Finally, it can be recommended that further experiments should be carried out to determine the position of the floor materials in the triboelectric series in order to properly select the material of the socks to avoid generation of excessive electric static charge.
Ali et al. (Fri,) studied this question.
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