Silcor ® 780 HI-LP (Formerly Chemspray 790LP)

Application

:

Water treatment plants | Roof-decks | Podium slab | Water tanks | Bridge-decks | Tunnels

Application area

:

Water treatment plants

Type

:

Coating

GCP CHEMSPRAY™ 790LP Isocyanate Packaging

:

20kg drums

GCP CHEMSPRAY™ 790LP Polyamine Packaging

:

18.5kg drums

Ambient Temperature

:

5°C to 45°C

Approximate Wind Speed

:

10 knots maximum

Concrete (Primed) (Substrate Failure Occurred)

:

2.43 MPa

Coverage

:

1.1kg (1 litre) of GCP CHEMSPRAY™ 790LP system provides coverage of 1m2 at 1.0mm coating thickness. Allow for processing losses, over-spray, etc – typically 10% or greater depending on surface and ambient conditions

Crack Bridging

:

Pass

Dew Point

:

3°C below substrate

Elongation (minimum)

:

350%

Gel Time (@ 25ºC)

:

20 seconds

Inter-coat Adhesion

:

1.40 MPa

Isocyanate Specific Gravity (@ 25ºC)

:

1.11 g/ml

Isocyanate Viscosity (@ 25ºC)

:

400 - 1000 mPa.s

Line Heater Temperature

:

60°C to 65°C

Main Heater Temperature

:

60°C to 65°C

Material Temperature

:

20°C to 25°C

Mix Ratio - Polyamine : Iso (by volume)

:

100 : 100

Polyamine Specific Gravity (@ 25ºC)

:

1.03 g/ml

Polyamine Viscosity (@ 25ºC)

:

400 - 1000 mPa.s

Recommended Applied Thickness

:

1.5 mm

Relative Humidity

:

85% maximum

Shore A Hardness (minimum)

:

80 ± 5

Solids (v/v)

:

100%

Spray Pressure

:

2500 to 2800 psi

Steel (90µm blast profile)

:

3.52 MPa

Substrate Temperature

:

10°C to 60°C

Surfacing

:

Where colour stability is required in sun exposed applications, apply our aliphatic, UV-stable topcoat, GCP ULTRAURE™ A-80 Non-Slip Top Coat where colour stable protection and a nonslip finish is required

Taber Abrasion Resistance (maximum)

:

220 mg

Tack Free Time (@ 25ºC)

:

60 seconds

Tear Strength (minimum)

:

44.0 N/mm

Tensile Strength (minimum)

:

9.8 MPa