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Typical Physical and Chemical Properties of Wearlon Silicone Epoxies

Low Adhesion
Low Adhesion
Hard, Abrasion Resistant
Hard, Abrasion Resistant
Corrosion Resistant
Corrosion Resistant
Weather Resistant
Weather Resistant

Where applicable these tests have been conducted on cold rolled steel Q-Panels that have been surface prepared to SSPC 10 (sandblasted) and spray coated with 4.0 mil DFT (dry film thickness) of Wearlon 2020.90 Primer, room temperature cured for 24 hours, followed by spray coating with Wearlon 2020.98 coating to 4.0 mil DFT. The coated panels were cured at room temperature (minimum of 20° C) for 7 days before testing commenced. For some tests, different samples were specifically required.

PROPERTY METHOD RESULT
1.0 Appearance    
1.1 Visual Inspection   Smooth uniform pigmented coating
1.1 Visual Inspection   Smooth uniform pigmented coating
1.2 Specular Gloss at 60°F ASTM D 523 60
2.1 Adhesion, Pull off ASTM D4541 >400 PSI *
2.2 Adhesion, Tape test ASTM D3359 5B ON Scale
2.3 Tensile Strength ASTM D2370 3000 psi
2.4 Tensile, Elongation at Break ASTM D2370 17%
2.5 Abrasion - Taber 1000 cycles ASTM D4060 60 milligram loss
2.6 Abrasion - Taber to remove 1 mil ASTM D4060 3000 cycles
2.7 Pencil Hardness - Scratch ASTM D3363 2H
2.8 Pencil Hardness - Gouge ASTM D3363 3H
2.9 Pendulum Hardness (Konig) ASTM D4366 150± 20 sec.
2.10 Chipping Resistance ASTM D3170 28-34 chips with diameter 1-2 mm
2.11 Static Friction Coefficient ASTM D4518 0.11
2.12 Dynamic Friction Coefficient ASTM D4518 0.07
2.13 Flexibility by Folding ASTM D4145 > 1T
2.14 Extrusion Impact Resistance ASTM D2794 >0.8 meter
2.15 Intrusion Impact Resistance ASTM D2794 >1.0 meter
2.16 Non Stick Release Adhesion TAPPI 502 20g/inch
2.17 Subsequent Adhesion TAPPI 502 100%
2.18 Contact Angle Water DTM 99°
2.19 Contact Angle Glycerol DTM 68°
2.20 Temperature Change Resistance (20 cycles) ASTM D1211 No effect seen
2.21 Electrical Conductivity   5x10-12 mohs/cm
2.22 Temperature Service Range Continuous** ASTM D2485 275 ± 25°F
2.23 Temperature Service Range Intermittent** ASTM D2485 450 ± 50°F
3.0 Resistance To    
3.1 Solvents ASTM G20 Modified See separate chart
3.2 Salts ASTM G20 Modified See separate chart
3.3 Acids ASTM G20 Modified See separate chart
3.4 Alkalies ASTM G20 Modified See separate chart
3.5 Miscellaneous ASTM G20 Modified See separate chart
3.6 3000hr Qfog Salt Spray ASTM B117 Passes

NOTE: Wearlon® silicone epoxies have a tendency to chalk and fade towards the yellow side, after extensive aging in sunlight. However, the physical and chemical properties are maintained. It is recommended to use yellow colors or dark colors to resist changes in appearance.

* The Cyano-acrylate adhesive bond to the coating fails before adhesion failure of the coating.
** Abrasion resistance will reduce as temperature is increased but non-stick properties are not affected.

This information is provided to assist the specifier in the selection of an appropriate coating for an end use situation. No warranty is expressed or implied since the surface preparation, thickness of application and the environmental conditions at the time of coating are beyond our control. The onus is on the user to determine if the product is fit for purpose. Should more information be required, please contact us and we will endeavor to be of assistance.

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