Denso Protal ARO is a VOC free, 100% solids liquid epoxy coating formulated to be applied over FBE as an abrasion resistant overlay (ARO) pipeline coating. It is a 3:1 ratio two-component coating compatible with most plural component spray units. This coating that can be spray or hand applied in the field or shop.

Uses

Denso Protal ARO is used to protect FBE mainline coatings and over Protal 7200 on girth welds during directional drilling, bores, river crossings and other rough terrain applications. Protal ARO can be used to provide additional protection to the coating on bends, fittings and fabrication when severe handling or rough terrain persist.

Features

• Excellent gouge and abrasion resistance
• Fast touch dry and set times
• High temperature resistance (up to 150°F
• High build (up to 60 mils in one coat)
• Excellent adhesion to FBE and Protal 7200
• Safe and environmentally friendly
• Does not shield cathodic protection
• Can be applied with brush, roller or spray
• Not applied direct to steel

Application

1. By Hand:
   Prepare FBE coating with a light sweep blast to remove gloss and roughen surface. After sweep blast wipe entire surface with MEK or approved solvent to remove all dust and other surface contamination. The equipment should be a plural component airless spray unit with a proportioning pump capable of a volume mixing of 3:1. Standard ancillary equipment should include minimum 10 gallon hoppers, static mixers, whip hose and spray gun. (Applicator should consult with Denso regarding recommended equipment). A wet on wet spray technique should be used to achieve the required film thickness. A wet film thickness gauge should be used to measure mil thickness.
    
2. Spray:
   Prepare FBE coating with a light sweep blast to remove gloss and roughen surface. After sweep blast wipe entire surface with MEK or approved solvent to remove all dust and other surface contamination. Add the hardener to base and mix until a constant color is achieved making sure all sides of container are scraped. Pour mixed material onto surface and apply to required mil thickness. A wet film thickness gauge shall be used to measure mil thickness.
    
   For complete application instructions, please refer to Protal ARO Hand or Spray Application Specifications.

Solids Content

100%

Base Component - unmixed @ 77°F (25°C)
     Specific Gravity
     Viscosity

1.68
140,000 cps

Hardener Component - unmixed @ 77°F (25°C)
     Specific Gravity
     Viscosity

1.04
20,000 cps

Mixed Material - mixed @ 77°F (25°C)
     Specific Gravity
     Viscosity

1.53
100,000 cps

Mixing Ratio by Volume

3 parts base: 1 part hardener

Theoretical Coverage

14 ft² / 30 mils / liter

Cure Times
     Pot Life @ 77°F (25°C), 100 gram
     Handling Time @ 77°F (25°C)

14 to 17 minutes
2 to 3 hours

Theoretical Coverage

14 ft² (1.3 m²) / 30 mils / liter

Thickness
     Minimum
     Maximum

  
20 mils
40 mils

Impact (ASTM G-14-88)

75 in. lb /  8.5 J

Flexibilty (NACE RP0394-2002)
     75°F Procedure A - 31 mils thick

0.79˚/pd - 0.69% Pass

Gouge Resistance (Partech Method) 50 kg load

18 mils depth – pass holiday detection at 67.5 Vdc

Abrasion Resistance (ASTM D 4060-01)
     1000 cycles CS-17

1400 cycles/mil

Water Absorption (ASTM D 570-98)

0.24%

Adhesion to FBE (ASTM D 4541-02)

2500 psi

Adhesion to Steel

3,030 psi

Hardness (Shore D)

85 ±2

Maximum Operating Temperature

150°F (65°C)

Storage

Minimum 24 months when stored in original containers @ 40°F (4°C) to 100°F (36°C). On job site where temperatures are below 50°F (10°C) product should be kept warm to mix properly.

Cleaning

Clean equipment with solvent cleaner (MEK, Acetone, or Xylene).

Health & Safety

Wear protective clothing and ensure adequate ventilation. Avoid contact with skin and eyes. See material safety data sheet for further information.

Packaging

1, 2, 75 & 800 liter kits standard.