Polytuff®-21 is a 100% solids, two-component, fast-cure polyurethane elastomer coating designed specifically for protection against abrasion, corrosion and is also resistant to a wide range of chemicals.
SKU: 67.4Kg
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The maximum Polytuff-21 recoat window is 6 Hours@25°C. Prior to commencing the next day’s spraying, the cold edge must be mechanically abraded to a minimum of 100mm wide to reactivate the Polytuff 21 and give acceptable adhesion. Vacuum all grinding swarf as you go. The non-abraded, cured coating must be masked to prevent over spray and provide a neat edge to the new section.
674kg drum set
67.4kg pail set
| Volume Solids | 100% |
| Theoretical Coverage | 0.33 Squaremeter / Litre @3000 Microns DFT |
| Finish | Pigmented |
| Colour | White |
| Gloss | Semi-Gloss |
| Mixing Ratio | 1:2 by volume |
| Gel Time | 20-25 Minutes |
| Typical Thickness | 3000 Microns Dry Film Thickness |
| Cleaner | Reactor Flush and Swell |
| Flash Point | >115°C |
| VOC | 0 Grams / Litre |
| Specific Gravity | 1.13 |
| Property | Method | Results |
| Pull-off adhesion value, concrete | ASTMD4541(20mm diameter dolly) | >1.5MPa |
| Elongation at 24°C | ASTMD 412-92 | 40% |
| Abrasion Resistance | ASTMc 501-84,CS-17wheel@ 1,000 rpm with 1,000g weight | 29mg |
| Tensile Strength | ASTMD 412-92 | 20-25 MPa |
| Tear Strength | ASTMD 624-86 | 50–55 N/mm |
| Hardness | ASTMD 2240-91, ShoreA
ShoreD |
68–72
21-23 |
| Water Absorption | AS3558.1 | <1% |
| Water Vapour Transmission | E96-05(B) | 0.04g/(h.m2)
0.97g/(24h.m2) |
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