ESD Sheet - Technical SpecificationsElectrical Properties:Generally, polypropylene is considered to be an excellent electrical insulator. However, during manufacture of the ESD sheet, a special carbon black masterbatch is added to the polypropylene formulation which alters the surface resistivity of the polypropylene to produce a conductive sheet. The surface resistivity of the sheet reducing from >1014 to a level 105 (ohms/cm squared). Since the special carbon black is an integral part of the sheet, the conductivity of the sheet is maintained throughout it's life and is unaffected by temperature extremes, moisture and solvents. Chemical Resistance: Polypropylene exhibits outstanding chemical resistance and is generally considered to be chemically inert and stain resistant. Polypropylene is extremely resistant to organic chemicals but is liable to attack by oxidising agents such as chlorosulphonic acid, fuming nitric and sulphuric acids and halogens. A superior substrate for long time use with no out-gassing. It is resistant to water, oils and most common solvents at room temperature. Thermal Stability: At elevated temperatures, carbon black can act as an oxidation catalyst in polypropylene. Grades containing 2% carbon black may offer a considerably reduced service life when compared to "natural" grades at 100ºC - particularly if continued contact with water is involved. Particular care must therefore be taken in considering the specific requirements of any such application. Stability to Ultraviolet (UV) Light: Unless specified or requested, Fluteboard’s ESD sheet is free from ultraviolet stabilisers. Excessive UV exposure of unstabilised polypropylene will degrade and cause brittleness with a resultant deterioration in mechanical properties. UV stabilisers can be added on request. Printability: The very conductive nature of Fluteboard’s ESD sheet prevents Corona treatment during production. Consequently, caution must be exercised when printing with screen or flexographic processes to ensure adequate adhesion is experienced. Test process is essential. Reuse / Recyclability: Fluteboard’s ESD sheet and containers can be reused many times over an the product is well suited to closed loop vendor supply applications. Even then, at the end of their working life polypropylene containers and sheet may then be recycled to satisfy the need for protecting the environment and minimising landfill waste. Sheet Properties - Conductive ESD Sheet: The general specifications are as follows: Resin Type - Polypropylene Board Type - Hollow Profile Board Weight - 700gsm to 900gsm Guage Thickness - 4.00mm to 5.00mm Colour - Black Surface Resistivity - <105 ohms/cm2 Compression Strength - 4.4 kgf/cm2 Impact Absorbance - 84%
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