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| | EPX33 is a two-component (A & B) high solids epoxy coating. | | |
| | EPX33 is a high solid epoxy coating used for lining interior steel and concrete tanks, valves and pipes. Also used as protective coating in corrosive environments. Ideal for coating/lining water carrying pipes and equipment used in potable water immersion and for industrial storage and process tanks containing fuel, oil and petroleum products. | | |
| • Economical tank lining coating for potable water (with CAT30), oil and fuel (with CAT20).
• Low VOC contents.
• Excellent abrasion resistance.
• Excellent adhesion on concrete and metal surfaces.
• Applied in two coats, does not require any primer or topcoat when blasting is applied.
• Non toxic, chemically acceptable for contact with food and potable water with CAT30 (component B).
• Easy and low-cost maintenance due its smooth surface and its high dust resistance.
• Excellent resistance to water, sea water, waste water, salt solutions, detergents, white spirits, aliphatics, mineral oils, fatty oils, crude oil, and fuels (A separate leaflet CHR01 is available).
• Excellent resistance to moisture and continuos variation of temperature in water immersion between 10°C and 60°C, and temporary resistance to a temperature of 85°C.
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| | • Method of Application : | Airless spray, brush or roller. | | • Mixing Ratio : | (by volume)
3.4 to 0.9 (A to B). | | • Mixing : | The individual components of EPX33 should be thoroughly stirred before the two are mixed together. Combine components (A & B) in supplied proportions and mix thoroughly using a slow speed mixer for at least 3 minutes to achieve uniform consistency; “DO NOT USE HIGH SPEED MIXER”. Never mix more material than can be used within potlife. Material that has begun to set must be discarded. | | • Pot life : | (20° C) 30 minutes (higher temperatures will shorten the potlife sharply). | | • Thinner / Cleaner : | S405 “known as Epoxsol” (recommended when using CAT20) or S406 “known as Epoxsol 2” (recommended when using CAT30) are used for thinning. For example: At 20°C airless spray or roller application will need approx. 15% by volume thinner S405 or S406.
Due to potlife limitations, clean all mixing and applying tools by thinner S405 immediately after application is completed. | | • Curing : | | | • Note : | • When recoating, a special attention should be given toward drying times “minimum & maximum recoating time”. Any delay in applying interval coats may request sanding the surface of the previous coat to insure good adhesion.
• The reaction between the epoxy and its curing agent (A & B) can not be guaranteed unless a temperature of at least 10 °C is maintained for the mixture and the substrate until complete curing. Temperature of substrate should be at least 3°C above dew point to avoid moisture condensation during application.
• Coated surfaces by EPX33 should not be exposed to water, chemicals, or mechanical stresses before it is fully cured.
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| | • Component B : | CAT30 “for food and potable water contact” or CAT20 “for higher chemical resistance” | | • Color : | Available in major industrial colors (RAL standard colors) | | • Gloss : | Semi-Gloss (ASTM-D1523) | | • Volume Solids : | 89.8 % (ASTM-D2697) | | • VOC : | 88 g/L (ASTM-D3960) | | • Flexibility : | Very good | | • Recommended film thickness : | 200 (fuel immersion)-300 (water immersion) microns “dry” | | • Theoretical spreading rate : | 3.6 m²/L at 250 microns “dry” | | • Water resistance : | Excellent | | • Abrasian Resistance : | Excellent | | • Chemical Resistance : | Excellent (with CAT20). Very good (with CAT30). (A separate leaflet CHR01 is available) | | • Solvent Resistance : | Very good (with CAT20). Good (with CAT30). (A separate leaflet CHR01 is available) | | • Number of Coats : | 2 | | • Specific Gravity (mixed) : | 1.69 kg/L (ASTM-D1475) | | • Packaging : | Component A “base” 3.4 L in US Gallon
Component B “drier” 0.9 L in US Quart (CAT20, CAT 30) |
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| Well-prepared-surfaces is an essential condition of coating successfulness. In general, surface must be clean, dry, undamaged and free of all contaminants prior to coating.
STEEL:
Remove all oil , grease, wax…etc from the surface to be coated by thinner S405 (Epoxsol).
Non-immersed: Abrasive blast to Sa2½, in accordance with ISO8501-1, and achieve a 50-100 microns profile. Remove all abrasive residues and dust from surface.
Immersed : Abrasive blast to Sa2½, a near white metal finish in accordance with ISO8501-1, and achieve
a 50-100 µm profile. Old steel to Sa3 in accordance with ISO8501-1. Remove all abrasive residues and dust from surface.
Apply EPX33 as soon as possible after surface preparation to prevent any contamination. Do not leave blasted steel uncoated over night. A thin coat of wash primer (WP) is highly recommended if treatment with EPX33 is not taking action immediately after blasting.
Priming (for non-immersion service where high resistance to corrosion is required): Prepare surface in accordance with application instructions for the suitable primer being used (WP). Be sure primer is, clean, dry, and free of oil, grease, and any other contaminants when EPX33 is applied.
CONCRETE:
Remove fins and other protrusions by stoning, sanding or grinding.
New concrete: Must be cured at least 28 days at 21?C and 50% RH, or equivalent time.
Old concrete: Abrasive blasting is best to remove all previous coatings, form oils, laitance and other foreign matter. Fill small holes or voids with STOP200 before applying EPX33.
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| | • Dry to Touch : | 2 hours (ASTM-D1640). | | • Dry to Handle : | 24 hours “minimum recoat time”, 2 days “maximum recoat time” (ASTM-D1640). | | • Fully Cured : | 7 days. | | • Note : | Drying times can be affected by many factors such as temperature, ventilation and coat thickness. Higher
temperatures will shorten the drying times. |
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| • Epoxy system, in general, especially component B, has to be kept in a cool and well ventilated place, protected from heat and direct sunlight. EPX33 is considered under flammable materials.
• Shelf life is one year from packing date in unopened original containers at 10 to 40°C. Containers should be kept tightly closed.
Safety:
• Well ventilated conditions should be provided during application.
• Do not breathe or inhale mist.
• Wear air-mask and avoid skin or eye contact.
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information in this data sheet and in all our data sheets are given to the best
of our knowledge based on laboratory testing and practical experience. Final results
depend on following instructions and on consumer skill. Our responsibility is limited
to providing products that Conform to samples and specimens provided by us. Due
to technical needs, we reserve the right to change any given specification without
notice.
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