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PROTAL
7125
By Denso
Fast Cure, Low Temperature
Pipeline Coating
| Description |
Denso
Protal 7125 is specifically formulated to be applied to colder
substrates at colder ambient temperatures. It is a high build liquid coating
that is hand applied in one coat to many areas of in-service pipelines or
during pipeline construction in the field or shop. It cures fast to allow
quick handling and backfilling, even down to -4°F (-20°C). Protal 7125 is
intended for use where a quick cure is required at lower substrate and/or
ambient conditions such as during winter applications or on colder operating
temperature pipelines. It will also cure after being submersed in water. |
| Uses |
Used as a rehabilitation coating for existing low temperature in-service
operating pipelines, station piping, girth welds, tie-ins, push rack (laybarge
applications), abrasion resistant coating for boring applications, repairs
to FBE, fittings and fabrication. It may also be used for new construction
where colder temperatures exist and preheating or post heating is not
practical or feasible. |
| Features |
•
Cold temperature application down to -4°F (-20°C)
• Will not freeze
• Fast cure, fast initial set
• Will cure when submersed in water
• High build (in one coat)
• Excellent adhesion (compliments FBE coated pipe)
• High abrasion resistance for drilling applications
• Does not shield cathodic protection
• Repair cartridges available |
| Application |
Prepare surfaces by grit blasting to a clean near white finish, SSC-SP 10/
NACE No. 2. (Repair areas shall be roughened using Carborundum cloth or 80
grit sandpaper and wiped clean with an isopropyl alcohol soaked cloth prior
to patching.) Open container to prepare for mixing and remove both foil
pouches. Cut open larger foil pouch, Part “A” and empty the white contents
into mixing container, then cut open and add the smaller foil pouch, Part
“B”. Thoroughly mix both components to a consistent gray color using a
wooden stick or power mixer. During the mixing process, the inside surface
of the container should be scraped to obtain a complete mixture. Pour mixed
material onto surface and brush, trowel or roll to required thickness. A wet
film thickness gauge shall be used to measure mil thickness (min. 20 mils).
Backfilling times are dependent on temperature and will be extended at
cooler temperatures. Note: Denso recommends surface temperature during
application to be a maximum of 68°F (20°C) for optimum performance
characteristics. |
| Packaging |
1
liter kits and 825 ml repair cartridges. |
| Storage |
Minimum 6 months when stored in original containers above 40°F (4°C).
Product will not freeze. |
| Cleaning |
Clean equipment with solvent cleaner (xylene 95%, butanol 5%) or approved
solvent. |
| Health & Safety |
Spray or brush under well ventilated conditions. Wear suitable protective
clothing and glasses. See MSDS for Protal 7125 "A" and
MSDS for
Protal 7125 "B". |
Technical Data
| Properties |
Data |
| Percent Reactive |
100% |
Base Component - unmixed at 77°F (25°C)
Specific Gravity
Viscosity
Color |
1.54
Thixotropic liquid
White |
Hardener - unmixed at 77°F (25°C)
Specific Gravity
Viscosity
Color |
1.48
Soft paste
Black |
Mixed Material - mixed at 77°F (25°C)
Specific Gravity
Viscosity
Color |
1.46
Thixotropic liquid
Gray |
Mixing Ratio
By Volume |
10 parts base, 1 part hardener |
Gel Time / Pot Life - 1 Liter Kit
Material @ 68°F (20°C)
Material @ 50°F (10°C)
Material @ 32°F (0°C)
Material @ 14°F (-10°C) |
10 Minutes
18 Minutes
30 Minutes
45 Minutes |
Back Fill Times - Material at
50°F (10°C)
Ambient &
Substrate Temp. @ 68°F (20°C)
Ambient & Substrate Temp. @ 50°F (10°C)
Ambient & Substrate Temp. @ 32°F (0°C)
Ambient & Substrate Temp. @ 14°F (-10°C) |
20 - 30 Minutes
45 - 60 Minutes
2 Hours
3 - 4 Hours |
| Theoretical Coverage |
14 ft2 (1.3 m2) / liter for 30 mils film build |
Thickness
Minimum
Recommended |
20 mils
25-30 mils |
|
Holiday Detection |
2,000 volts maximum |
Cathodic Disbondment Test
28 Days @ 68°F (20°C) |
7.1 mm |
| Adhesion to Steel |
2400 psi |
| Hardness |
85 per Shore D |
|
Gouge Resistance |
3 passes = 0 Fail @ 50 kg |
| Application Temperature |
-4°F to 68°F (-20°C to 20°C). |
| Service Temperature |
-40°F to 150°F (-40°C to 65°C) |
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