ISO 14309 specifies a method for the determination of the volume and the surface resistivity of vulcanized or thermoplastic rubbers. The method can be applied to materials with a resistivity from 101 Ω⋅m to 1017 Ω⋅m.
The methods specified in ISO 14309 were originally designed for the determination of both surface and volume resistivity of insulating rubber materials, but their use can be extended to cover the range from high to low resistivity.
the test results of ISO 14309 are sensitive to the test conditions, such as temperature and humidity, and to heat and strain history.
ISO 14309 on Rubber, vulcanized or thermoplastic is relevant to:
A surface resistivity is measured along the surface of an insulating material, while a volume resistivity is measured along its body.
ISO 14309 uses guarded electrodes to determine the resistivity of rubber test pieces since this technology is regarded as an effective compromise between minimizing errors and using more cumbersome measurement techniques.
ISO 14309 specifies three methods for determining volume resistivity that minimizes or eliminate contact resistance.
Overall, ISO 14309 is a comprehensive guide to provide methods for determining the volume or surface resistivity of rubbers and thermoplastics, so users will gain a comprehensive understanding of the quality of Rubber, vulcanized or thermoplastic to improve the quality and durability of end products.
BS ISO 14309:2019 supersedes BS ISO 14309:2011, which are withdrawn and includes some technical changes with respect to the standards it supersedes:
ISO 14309