What is the shelf life of ETHAFOAM™ antistatic olefin foam products?
Antistatic product versions are available in the product lines of ETHAFOAM polyolefin foams. These antistatic foams contain an amine additive to enhance electrostatic performance. This additive “blooms” to the surface of the foam where it attracts a layer of water molecules from the surrounding air, thus providing an electrical conduction path to control static buildup and dissipation. Samples left undisturbed in storage for up to three years have shown no deterioration in static performance. If the amine layer is disturbed, such as being rubbed or washed off, it will quickly regenerate from the reservoir of additive contained within the foam and restore antistatic performance. If disturbed repeatedly, it is possible to deplete the supply of the additive to the point where static performance is affected. Thus the shelf life obtained will depend upon the storage and use conditions experienced. With regard to the physical properties of the foam, these products are composed primarily of p
