TWI Frequently asked questions
by Richard Court
In simple terms, the surface energy of a material is a measure of how easy it is to wet the surface of that material with a liquid. High surface energies are easy to wet out; low surface energies are harder to wet out. The term'surface energy' is used interchangeably with the terms 'surface free energy' and 'surface tension'.
Further information
FAQ: What are the typical values of surface energy for materials and adhesives?
FAQ: What treatments exist for altering the surface energy of a material?
FAQ: What is meant by wetting and how can it be used?
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