Description
VISCOTAQ® Coating Patch can be applied with minimal surface preparation, does not require a primer, forms to virtually any shape, works well with theexisting pipe coating regardless of type; and provides proven, long-corrosion protection. VISCOTAQ® Coating Patch is a peel & stick product designed to provide corrosion protection to areas where lead wires and test wires are connected to the substrate by means of exothermic welds and/or pin brazes.
VISCOTAQ® is a non-crystalline, a-polar viscous elastic, 100% solids polyolefin coating that protects against corrosion of underground and aboveground substrates. VISCOTAQ’S® unique molecular chemistry provides permanent wetting characteristics. This allows the material to flow into the substrate anomalies and form an impermeable protective coating. The fact that VISCOTAQ® always remains in a semi-solid state translates to high impact strength and excellent high resistance against sheering.
Exothermic welds that connect lead wires, copper strips, etc. to the pipe, create problematic areas. Welding destroys existing protective systems, thereby subjecting the welded area to immediate corrosive attack. VISCOTAQ® Coating Patch can be an easy and fast protective solution. Coating Patch can be applied with minimal surface preparation, does not require a primer, forms to virtually any shape and provides proven, long- term corrosion protection.
VISCOTAQ® shows excellent adhesion to any ferrous and non-ferrous substrates, wire jacketing as well as to underground and above ground coating systems.
The VISCOTAQ® Coating Patch for Exothermic Weld Connections:
Specifications
Advantages of VISCOTAQ® Coating Patch for Exothermic Weld Connections:
Measurement |
Value | Method |
Glass Transition Temperature |
-42.92° C/-45.26° F |
ASTM E1356-03 |
Material State | Solid | NA |
Density |
1.1-1.3 |
DIN 53479 |
Melting Point | 152.09° C/306° F |
ASTM E1356-03 |
Yield Point | YES |
ISO 3219 |
Water Vapor Permeability |
<4 *10-4 g/day/m2/Pa |
ASTM E96/96M-10 |
Water Absorption |
<0,03 % |
ISO 62 |
Water Penetration |
<0.14% (1800 hrs, 6V, 3% NaCl) |
ASTM G9-87 |
Cathodic Disbondment |
0-3 mm |
ASTM G8-96 |
Dielectric Strenght |
>17.5 kV/mm |
ASTM D149-09 |
UV/Weather Cycle Test |
Excellent, rating 10 |
ASTM D4587, 1000 hours |
Wet Adhesion Test |
Excellent |
CSA Z245-20-06 Sec. 12.14 |
Chemical Resistance in Agressive Soils |
Excellent |
1. Sulfuric acid 30% |