PPG SigmaShield 2

7749

SigmaShield 2, previous known as Amerlock 2 GF, is a two-component, high solids glass flake reinforced polyamine cured epoxy coating that is suitable for immersion. Designed for long-term protection at areas subject to heavy wear and tear, with excellent abrasion, corrosion and impact resistance.

  • Low-temperature curing down to 0°C (32°F)
  • Very low water permeability, due to high glass flake barrier level
  • Tar free
  • Resistant to splash and spillage of a wide range of chemicals
  • Compatible with cathodic protection systems
  • Up to 750 µm (30.0 mils) DFT in a single coat
  • No induction time - 1 hour pot life (at 20°C (68°F)
  • Refer below for more details on spreading rate and film thickness, overcoating intervals and curing times

**Available for delivery - see Delivery Options below**

Colour
Size
Finish
£458.20
VAT excluded

£549.84 Tax incl.
Quantity

Description

SigmaShield 2, previous known as Amerlock 2 GF, a two-component high solids glass flake reinforced polyamine cured epoxy coating. The coating is suitable for immersion with its very low water permeability, and is designed for long-term protection at areas subject to heavy wear and tear, with excellent abrasion, corrosion and impact resistance.



Features & Benefits


  • Formerley known as Amerlock 2 GF
  • Two-component
  • High solids
  • Polyamine cured epoxy
  • Low-temperature curing down to 0°C (32°F)
  • Excellent abrasion and impact resistance
  • High glass flake level
  • Excellent resistance to corrosion
  • Long-term protection at areas subject to heavy wear and tear
  • Very low water permeability, due to glass flake barrier
  • Tar free
  • Resistant to splash and spillage of a wide range of chemicals
  • Suitable for immersion service
  • Compatible with cathodic protection systems
  • Up to 750 µm (30.0 mils) DFT in a single coat
  • No induction time
  • 1 hour pot life (at 20°C (68°F)
  • Refer below for more details on spreading rate and film thickness, overcoating intervals and curing times



Product Data


Two-component, high solids glass flake reinforced polyamine cured epoxy coating.

Epoxy coatings will chalk and fade with exposure to sunlight. Light colours are prone to ambering to some extent. Note that product tinted to custom colours are not recommended for immersion service. Only use factory grind batches for immersion

Data for mixed product
Number of components Two
Mass density 1.5 kg/l (12.5 lb/US gal)
Volume solids 87 ± 3%
VOC (Supplied) EPA Method 24: 172.0 g/ltr (1.4 lb/USgal)
Temperature resistance (Continuous) To 218°C (420°F)
Temperature resistance (Intermittent) To 232°C (450°F)
Recommended dry film thickness 200 - 750 µm (8.0 - 30.0 mils) depending on system
Theoretical spreading rate 4.4 m²/l for 200 µm (174 ft²/US gal for 8.0 mils)
Dry to touch 6 hours
Overcoating Interval Minimum: 16 hours
Maximum: 3 months
Full cure after 16 days
Shelf life Base: at least 24 months when stored cool and dry
Hardener: at least 24 months when stored cool and dry

Notes:

  • Refer below for more details on spreading rate and film thickness, overcoating intervals and curing times
  • Intermittent temperature resistance should be less than 5% of the time, and maximum 24 hours
  • Temperature resistance is in atmospheric condition. Please contact our technical team for immersion condition.



Surface Preparation


Recommended Substrate Conditions and Temperatures

Substrate conditions

  • Steel - blast cleaned to ISO-Sa2½, blasting profile 50 – 100 µm (2.0 – 4.0 mils)
  • Suitable primer must be dry and free from any contamination

 

Substrate Temperature


  • Substrate temperature during application and curing should be above 5°C (41°F)
  • Substrate temperature during application and curing should be at least 3°C (5°F) above dew point



Application


Instructions for Use

Mixing ratio by volume: base to hardener 50:50 (1:1)

  • The temperature of the mixed base and hardener should preferably be above 15°C (59°F), otherwise extra thinner may be required to obtain application viscosity
  • Adding too much thinner results in reduced sag resistance and slower cure
  • Very good mechanical mixing of base and hardener is essential
  • Thinner should be added after mixing the components
  • Filters should be removed from spray equipment

 

Air Spray


Recommended thinner

Volume of thinner

  • 6 - 10%, depending on required thickness and application conditions

Nozzle orifice

  • 1.5 – 2.0 mm (approx. 0.060 – 0.079 in)

Nozzle pressure

  • 0.3 - 0.4 MPa (approx. 3 - 4 bar; 44 - 58 p.s.i.)

 

Airless Spray


Recommended thinner

Volume of thinner

  • 0 - 5%

Nozzle orifice

  • Approx. 0.53 – 0.79 mm (0.021 – 0.031 in)

Nozzle pressure

  • 19.0 - 22.5 MPa (approx. 190 - 225 bar; 2756 - 3264 p.s.i.)

 

Brush/roller


  • Only for touch-up and spot repair
  • Due to thixotropy, it is difficult to obtain a smooth film by brush, although this does not affect performance

 

Cleaning Solvent




Spreading Rate and Film Thickness


Theoretical spreading rate


DFT Theoretical Spreading Rate
200 µm (8.0 mils) 4.4 m²/l (174 ft²/US gal)
750 µm (30.0 mils) 1.2 m²/l (47 ft²/US gal)

 

Overcoating Interval for DFT up to 300 µm (12.0 mils)


Overcoating with... Interval 10°C (50°F) 20°C (68°F) 30°C (86°F)
Itself Minimum 16 hours 7 hours 4 hours
Maximum 1 month 1 month 1 month
Two-Component Polyurethane Coatings Minimum 16 hours 7 hours 4 hours
Maximum 14 days 7 days 4 days

Notes:

  • Surface should be dry and free from any contamination
  • Adequate ventilation must be maintained during application and curing (please refer to information sheets 1433 and 1434)
  • An extended recoatable window may be allowable in some circumstances, please contact our technical team for more details

 

Curing time for DFT up to 300 µm (12.0 mils)


Substrate temperature Dry to Handle Full Cure
10°C (50°F) 24 hours 16 days
20°C (68°F) 8 hours 8 days
30°C (86°F) 5 hours 5 days

Notes:

  • Adequate ventilation must be maintained during application and curing (please refer to information sheets 1422 and
  • Directives for Ventilation Practice (information sheet 1434)

 

Pot Life (at application viscosity)


Mixed product temperature Pot life
10°C (50°F) 2 hours
20°C (68°F) 1 hour
30°C (86°F) 30 minutes



Safety Precautions


  • For paint and recommended thinners, see information sheets information sheet 1430, information sheet 1431 and the relevant Material Safety Data Sheets in the attachments section above
  • This is a solvent-borne paint and care should be taken to avoid inhalation of spray mist or vapor, as well as contact between the wet paint and exposed skin or eyes



References


Product Details
7749

Data sheet

Manufacturer
PPG
For Use On
Metal
Application Method
Brush, Roller, Spray
Sheen
Eggshell
Colour
Standard / Ready Mixed
Single, Two or Three Pack
Two-Pack
Pack Size
20L
Parts
Two
Base Type
Glass flake reinforced polyamine cured epoxy
Solvent
Solvent-borne
Mixing Ratio
1:1
Suitable Substrates
Steel
Key Features
Excellent resistance to corrosion, tar free, suitable for immersion service
Application
Spray
Touch Dry (at 20°C)
-
Dry to Handle (at 20°C)
8 hours
Dry to Recoat (at 20°C)
Minimum: 16 hours. Maximum: 3 months
Fully Cured (at 20°C)
After 16 days
Pot Life (at 20°C)
1 hour
Coverage
4.4 m2/I for 200 µm (174 ft2/US gal for 8.0 mils)
Recommended Thinner/Cleaner
PPG Thinner 21-06, PPG Thinner 90-58
Unit Contents
-
Compatible Primers
-
Compatible Topcoats
Itself
Max. Application Temperature
-
Min. Application Temperature
5°C (41°F)
Density
1.5 kg/I (12.5 lb/US gal)
Solids by Volume
87 ±3%
Heat Resistance (up-to)
218°C (420°F) (continuous)
VOC
EPA Method 24:172.0 g/ltr (1.4 lb/USgal)
Shelf Life (Once Opened)
Base/Hardener: at least 24 months when stored cool and dry
UN Number (Activator)
UN3469
UN Number (Base)
UN1263
Attachments
Download


Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.


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