ABSTRACT
Edge sealing is often used to assure one-dimensional moisture flow and a defined exposure area in moisture transport experiments. This paper deals with the performance of a number of edge sealing systems-including wax-paraffin mix, epoxy adhesive, silicone and different tapes and films. The overall performance of the sealing systems includes vapor permeability and hygroscopicity, workability, thermal durability, flexibility, adhesion and risk of hydrophobation. The moisture-related properties are determined gravimetrically. The other properties are examined visually and qualitatively. Each of the properties of the edge sealing systems is rated and the overall performance is an assessment of all the single properties. This comparative study shows that the best overall performance among the studied edge sealing systems were seen in the tapes and films, the mixes demonstrate a higher risk of hydrophobation. The advantages as well as the disadvantages of each system are discussed together with some recommendations on usage.
