Low V.O.C. Epoxy System Semi gloss finish
Steel It anti-corrosion system for machinery and industrial lines
In order to meet customer’s requirements on surface appearance, Stainless Steel Coatings Inc. developed a low VOC epoxy system with semi – gloss metallic finish.
This two component system is composed of primer type 4220 and finish coat type 8908.
Technical characteristics are the same of the other epoxy systems.
PROTECTION
Against corrosion from light and strong alkali, solvents and chemical products, sea water, impacts and abrasion.
USES
Industrial mills and machines, packaging and wrapping lines, pumps, valves, slides, vehicles, etc.
SURFACES
Steel, aluminium, copper and other metals, cast iron, wood, fibreboard, tiles, glass, ceramic, masonite, and fibreglass.
PREPARATION
For light conditions of use: treat with a hand or electric metallic brush, after completely removing dirt, grease, oil and every other pollutant. Preferably sandblast to SA 2 or 2½. For severe conditions of use including chemical agents: sand blast to SA 3 with sharp and angular profile 40-50 µ deep.
THICKNESSES
Surfaces exposed to light atmospheric or chemical agents:
1 coat of 4220 primer at 75 µ dry /105 µ wet
1 coat of 8908 finish paint at 75 µ dry /110 µ wet
Surfaces in immersion service or exposed to strong chemical agents:
1 coat of 4220 primer at 125 µ dry /175 µ wet
2 coats of 8908 finish paint at 100 µ dry /150 µ wet each coat
Note: Film thickness on sand blasted surfaces should be measured up from the peaks of the anchor pattern.
APPLICATION
– Conventional spray gun with vertical reservoir, nozzle 1,6 – 1,8 mm., nozzle pressure 4 – 4,5 bar.
– Airless gun pump ratio 28:1 nozzle size 0,4 – 0,5 mm.
– Brush. Roller.
– Do not apply by dipping.
Clean tools (especially nozzles) immediately after use with a commercial solvent.
Note: The stainless steel flakes tend to make a deposit on the bottom of the can and therefore we recommend stirring the product frequently before and during application. A possible presence of small lumps due to stocking time is normal; they can be eliminated easily by accurate stirring.
We strongly recommend using a low speed electric mixer in every stirring operation in order to obtain the best adhesion and protection results.
Note: do not mix primer and finish paint together.
MIXING
Stir with care the two A and B components separately, then mix them accurately in a clean container with the mixing ratio 1:1 by volume (the two components have different specific gravity so that a mixture by weight would give unacceptable results). Let deposit for 15 minutes, stir again and filter if necessary to eliminate possible lumps.
Apply within 6 hours maximum.
We strongly recommend using a low speed electric mixer in every stirring operation in order to obtain the best adhesion and protection results.
THINNING
Not recommended. The addition of a thinner might loosen the resin/flakes molecular matrix, thus lowering the anti corrosion properties of the system.
DRYING TIME
Primer 4220: touch dry after 3 hours – over coating after 12 hours
Finish coat 8908 touch dry after 4 hours – over coating after 12 hours
Note: It is not recommended to dry the paint in the oven, as a too fast evaporation of the solvents would not allow the flakes to form a solid surface.
SERVICE
The complete system can be put into light service after 36 hours. Complete curing with achievement of maximum hardness and protection occurs in 2 weeks.
COVERAGE
Theoretical coverage:
primer 4220: 9,30 sm/lt at 75 µ dry – 5,65 sm/lt at 125 µ dry
finish coat 8908: 9,00 sm/lt at 75 µ dry – 6,70 sm/lt at 100 µ dry
Note: Practical coverage can be 10 – 25% lower than the theoretical one according to working conditions, surface shape and application method.
TEMPERATURE
Maximum working temperature: 121° C
LIMITATIONS
Application temperature between 10 and 38° C for both working place and surface to coat.Relative humidity less than 85%.
Temperature of the surface to coat at least 3° C over dew point (to calculate this value please refer to table A).
CAUTIONS
Use breathing mask for spray applications.
Apply only in well ventilated areas.
Use hand protection gloves.
Do not swallow, do not breathe aerosols.
A detailed safety data sheet is included in every parcel and is available upon request
CHEMICAL RESISTANCE
Immersion service
|
Occasional contact
|
Frequent contact
|
---|---|---|
Caster oil | Wine | Xilene |
Sunflower oil | Butyl acetate | Aqueous alcohol 40% |
Linseed oil | Ethyl acetate | Alum. Sulphate 20% |
Peanut oil | Acetone | Vaseline |
Fish oil | Phosphoric acid 50% | Benzene |
Distilled water | Nitric acid 10% | Toluene |
Fresh water | Sulphuric acid 20% | Ethyl alcohol |
Sea water | Styrene | Methyl alcohol |
Turpentine | Trichloroethylene | Butyl alcohol |
Detergents | Methyl Isobutyl Ketone | Ethyl glycol |
Gasoline | Oleic acid | |
Diesel fuel | Fruit juice | |
Acrylic emulsion | Caustic soda 20% | |
Ethylene glycol | Hydrochloric acid 20% | |
Glycerine | Ammonia | |
Glucose | Styrene | |
Hexane | ||
Kerosene | ||
VM&P Naphtha | ||
Brine |
Dati Tecnici
STEEL IT
8908
|
STEEL IT
PRIMER 4220
|
|
CPS viscosity:
|
800
|
550
|
Colour:
|
Metallic (*)
|
Red
|
Sheen:
|
Semi gloss
|
n.a.
|
Total solid: by weight
|
78%
|
84%
|
Total solid: by volume
|
68%
|
72%
|
Pot life:
|
6 hours
|
6 hours
|
Shelf life:
(not mixed components)
|
1 year
|
1 year
|
V.O.C.: gr/litre
|
253
|
257
|
PACKING |
||||
Product |
Code |
Unit |
Units per box |
Weight per box |
STEEL-IT |
ST.8908 Q |
0,945 A |
3 Kits |
8 |
ST.8908 G |
3,780 A |
2 Kits |
20 |
|
PRIMER |
ST.4220 Q |
0,945 A |
3 Kits |
11 |
ST.4220 G |
3,780 A |
2 Kits |
28 |
Note: every unit includes one component A and one component B