CORROCOAT
Corrocoat Armagel
Product reference: 3/60
Product title: Corrocoat Armagel
Valid from: 8th October 2004
Last reviewed: May 2019
Type
An abrasion resistant vinyl ester co-polymer containing glass flake and silicon
carbide.
Suggested use
Immersed environments where good resistance to chemical attack combined with resistance to abrasion are required. Pipes, chutes, process tanks, etc.
Limitations
Affected by some highlypolar solvents and solutions
exhibiting high pH at temperatures above 122°F
(50°C).
Health & safety
Before handling or using this product the material safety datasheet should be read and all precautions observed.
Surface preparation
Metals: Grit blast to SSPC-SP10 (ISO 8501-1 SA 2½
near 3) standard or equivalent. For full details refer to
Corrocoat Surface Specification SP1.
Concrete: See Corrocoat Surface Specification SP5.
Application equipment
Airless pump of 45:1 ratio or greater. Fit leather and PTFE
seal combination and remove all fluid filters. 10mm diameter
(3/8”) nylon lined hose with 6mm whip end, large bore gun
with reverse clean spray tip. Typical tip size is 32 to 50
thou with a 45° fan. Size of tip and fan angle will vary
dependent upon the nature of the work. Pressure to suit
hose lengths and working conditions. (Circa 200bar).
Brush application; is not recommended except for minor
touch up and stripe coating.
NOTE: High rates of spray tip wear will be encountered
with this product. Trials have shown that the silicon carbide will wear tips at a rate of approximately one for every 250
litres sprayed. This value will change dependent upon spray
pressure, tip size and fan angle.
Application
Dependent upon intended use and site conditions, but
Polyglass VE is normally applied as a primer coat at 20
mils (500 microns), Armagel is then applied at typically
30-98 mils (750-2500 microns). See Polyglass
Application Data Sheet.
Mixing ratio / mixing
98:2 base to hardener. For inhibitor use and mixing
instructions refertoPoly-glass Application Data Sheet
Pot life
Circa 50 minutes at 68°F (20°C) but may be varied by use of
inhibitoror special manufacture,refer to Polyglass Application
Data Sheet.
Thinners
The performance of Armagel can be adversely affected by
the addition of solvents and their use is prohibited. Thinning
can be achieved by the addition of not more than 5% styrene
monomer to Armagel by volume i.e. maximum 0.25 gal (1 litre)
styrene per 5.25 gal (20 litres) Armagel. It should be noted
that dilution with styrene may affect chemical resistance.
Packaging
1 Gallon and 5 Gallon Kits
Storage life
Base and hardener 6 months, stored at temperatures below
68°F (20°C) and away from heat sources and direct
sunlight.
Frequenttemperaturecycling will shortenstorage life.See
other information for extension of shelf life.
Color availability
Off white, speckled finish
Recommended DFT
Between 48-118 mils (1250-3000 microns) dependent
upon service duty.
Theoretical spreading rate
54 sf per gal at 30 mils (1.33m²/litre at 750 microns).
Volume solids
This material contains volatile liquid convertible to solids.
Volume solids obtained will vary dependent upon
polymerization conditions. Nominally 99.05% of the contents
are convertible to solid.
Practical spreading rate
43 sf per gal at 30 mils (1.06m²/litre at 750 microns).
Specific gravity
Base: 0.04lbs/cubic inch (1.22 gms/cc)
Hardener: 0.03lbs/cubic inch (1.07 gms/cc).
Catalyst type
Methyl Ethyl Ketone Peroxide, type P2-45.
Mixing ratio
98:2 base to hardener. Refer to Application Data Sheet for
inhibitor levels and mixing.
Flash point
Base: 82°F (28ºC).
Theoretical spreading rate
54 sf per gal at 30 mils (1.33m²/litre at 750 microns).
Hardness
Greater than 45 Barcol fully cured.
Thermal coefficient of linear expansion
19.7 x 10-6/°C
Dielectric strength
15 – 20 x 10³ V/mm
Adhesion
> 10 MPa (ASTM D4541)
Thermal conductivity
0.45 W/m°K
Temperature limits
212°F (100°C) immersed; 320°F (160°C) non-immersed. No
known lower limit.
Abrasion resistance
74 mg loss/1000 cycles/1000 gm load (H18 wheel)
Over coating
It is important to observe maximum over coating times
and note these will vary substantially with climatic
conditions. Minimum, as soon as gel has occurred and
while still tacky. Maximum, at 68°F (20°C) 48 hours. Strong
ultra- violet/sunlight will substantially reduce over
coating time. Once maximum over coating time has been
reached, adhesion values attained by any subsequent coat
willreduce dramatically. Should this occur over coating
should be treated as a repair, with the coating flash blasted
to provide a physical key. Styrene cannot be used to
reactivate the surface of this product and may impair
adhesion. Takecare to avoid contamination before
application of subsequent coats. Ensure ventilation during
cure.
Curing time
At normal inhibitor level, tack-free circa 6 hours, full cure 3-4 days at 68°F (20°C). Do not use in abrasion service until fully cured, post cure will aid performance.