RTV uses hydroxyl-terminated dimethylsiloxane (PDMS) with a contact angle greater than 90°. In the molecular composition of PDMS. The 'Best use before end' date of each batch is shown on the product label.
Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.
The small nanometer force and molecular force in the methyl group;
The unique flexibility of the silicon-oxygen backbone;
The high bond energy of the silicon-oxygen;
The local ionic character of the silicon-oxygen backbone;
The non-polar methyl groups closely arranged around the silicon-oxygen backbone are oriented toward the surface, shielding the strong polarity of the Si-O bond.
These make Greete series antifouling flashover coatings exhibit excellent water resistance.
Typical general characteristics | Inspection Method | Value |
Product data (liquid state) | ||
Viscosity, dynamic | DIN EN ISO 3219 | 5000 mPa s |
Density at 23 °C | ISO 1183- 1 A | 0,81 g/cm³ |
Flash point | DIN 51755 | 7 °C |
Skin forming time at 23 °C, 50 % RH | 9 min | |
Product data (solid state)¹ ) | ||
Color | grey | |
Density | ISO 2781 | 1,10 g/cm³ |
Hardness Shore A | ISO 868 | 45 |
Tensile strength | ISO 37 | 3,00 N/mm2 |
Elongation at break | ISO 37 | 250% |
Tear strength | ASTM 624 B | 9,0 N/mm |
Dielectric strength 1 mm | IEC 60243 | > 28 kV/mm |
Volume resistivity | IEC 60093 | > 5 x 10 15 Q cm |
Permittivity (50 Hz) | IEC 60250 | 2,9 |
Dissipation factor (50 Hz) | IEC 60250 | < 10-³ |
Arc resistance | IEC 61621 | 420 s |
Tracking resistance | IEC 60587 | 1A 4.5 |
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