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PROTAL
7200
By Denso
Fast Cure, High Build
Pipeline Coating
| Description |
Denso
PROTAL 7200 is a VOC free, 100% solids epoxy coating specially
formulated to compliment FBE coated pipe. It is a high build liquid coating
that is brush or spray applied in one coat in the field or shop. It cures
very fast to allow quick handling and backfill times. |
| Uses |
On-site protection of girth welds, tie-ins, welds for boring applications,
repairs to FBE, push-back applications, station piping, fittings and
fabrication. Also used for main line pipe coating, sacrificial coating for
directional drill and road bore pipe, and rehabilitation of existing
pipelines. |
| Features |
•
Fast touch dry and set times
• High temperature resistance (up to 185°F)
• High build (up to 50 mils in one coat)
• Excellent adhesion (compliments FBE coated pipe)
• High abrasion resistance for drilling applications
• Safe and environmentally friendly
• Does not shield cathodic protection
• Can be applied with brush, roller or spray
• Available in a variety of packaging options |
Application,
Brush |
Prepare surfaces by grit blasting to a clean near white finish, SSC-SP 10/
NACE No. 2. Initially stir the base and hardener. 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 brush, trowel or
roll to required mil thickness. A wet film thickness gauge shall be used to
measure mil thickness. If surface temperature falls below 50°F (10°C),
surface must be preheated to achieve cure. Preheat may be achieved with a
propane torch or induction coil. Resin and hardener component shall be kept
warm, at a minimum of 68°F (20°C), to mix easily. |
Application,
Spray |
Prepare surfaces by grit blasting to a clean near white finish, SSC-SP 10/
NACE No. 2. The equipment should be a plural component airless spray unit
with a proportioning pump capable of a volume mixing ratio of 3:1. Standard
ancillary equipment should include minimum 10 gallon hoppers, static mixers,
whip hose, and mastic gun. (Applicator should consult with Denso regarding
recommended equipment). A wet on wet spray technique should be used to
achieve a minimum thickness of 20 mils. The coating thickness should be
measured using a wet film thickness gauge. |
| Packaging |
1
liter kit and 90 liter drums standard. Other kit sizes are available. Dual
cartridge repair tubes (375 ml & 50 ml) and dispensing guns available for
small repair areas. |
| Storage |
Minimum 24 months when stored in original containers @ 41°F (5°C) to 100°F
(36°C). On job site where temperatures are below 68°F (20°C) product must be
kept warm to mix properly. |
| Cleaning |
Clean equipment with solvent cleaner (xylene 95%, butanol 5%). |
| Health & Safety |
Spray or brush under well ventilated conditions. Wear suitable protective
clothing and glasses. See MSDS for
Protal 7200 "A" and MSDS for
Protal 7200 "B". |
Technical Data
| Properties |
Data |
| Solids Content |
100% |
Base Component - unmixed at 77°F (25°C)
Specific Gravity
Viscosity
Color |
1.68
Soft gel
White |
Hardener - unmixed at 77°F (25°C)
Specific Gravity
Viscosity
Color |
1.04
Liquid (400 cps)
Forest green |
Mixed Material - mixed at 77°F (25°C)
Specific Gravity
Viscosity
Color |
1.53
Light gel
Forest green |
Mixing Ratio
By Volume |
3 parts base, 1 part hardener |
Cure Times
Pot Life @ 77°F (25°C)
Handling Time @ 77°F (25°C) |
6 to 8 minutes
60 to 90 minutes |
| Theoretical Coverage |
14 ft2 (1.3 m2) / liter |
Thickness
Minimum
Recommended |
20 mils
25-30 mils |
|
Holiday Detection |
2,000 volts maximum |
Cathodic Disbondment Test
28 Days @ 77°F (25°C)
28 Days @ 150°F (65°C)
28 Days @ 175°F (80°C) |
3 mm
4 mm
7 mm |
| Hardness |
Shore D 85 ± 2 |
| Impact Resistance |
Excellent |
| Application & Service Temperature |
-30°F (-34°C) to 185°F (85°C).
Note: If temperature falls below 50°F (10°C),
surface must be preheated. |
|
Glass Transition |
185°F (85°C) |
| Impact Resistance |
Excellent |
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