About Harboro Rubber Engineering in Rubber      Contents      Introduction      Uses of Rubber      Processing Rubber      Designing With Rubber      Selecting / Specifying Rubber      Quality In Rubber      Rubber Directory      Health & Safety      Measuring Properties          Measuring Properties          Measuring Hardness          Tensile Strength          Elongation          Modulus          Compression Set          Permanent Set (Tensile Set)          Density (Specific Gravity)          Resilience          Chemical Resistance          Fluid Resistance          Weather Resistance          Ozone Resistance          Electrical Properties          Tear Strength          Abrasion Resistance          Electric Strength          Flame Resistance          Low Temperature          Staining          Accelerated Ageing      Glossary of Terms      Request A Copy Contact Information

Electrical Properties   Property: Electrical Properties Method of Measurement: Anti-static and conductive properties of rubbers are defined by measuring their electrical resistances. Typical measurements are obtained through the thickness of a sample by using 25mm sq electrodes under a pressure of 45N and applying a voltage of 500V DC @ approx 6mA. (Energy dissipated into the test piece is limited to 3W max.) The surface should be cleaned before measuring. Patterned surfaces should be wetted with a conductive solution or paint. Results should be recorded in W, defining the conditions of testing. ASTM REFERENCE: D991 D257 BS REFERENCE: BS2050 * technically equivalent ** identical