KingCoat PA550®
High performance polyurethane acrylic hybrid enamel coating.
SpecWorld has the Spec Pack, CSI specification and drawings for registered specifiers.
Overview
KingCoat PA550 is high performance floor and wall coating based on hybrid combination of acrylic- polyurethane resins. It is supplied as a two pack material in pre-weighed quantities ready for on-site mixing and use.
KingCoat PA550 is easily sprayed, brushed or rolled to concrete and steel substrates in a two coat application, typically applied at a wet film thickness of 200 - 250 microns per coat without sagging.
KingCoat PA550 is available in a standard grey colour, other colours are available subject to minimum order quantities.
Where to use
Provides chemical and abrasion resistance to prevent corrosion of concrete and steel surfaces for applications such as:
- Wall and floor protective coating.
- Protection system for car park decks.
- Manhole and pipe lining.
- Secondary containments.
- Lining for sewage and effluent plants.
- Lining of aeration and sludge tanks.
- Sea water tanks, channels and intakes.
- Concrete structures.
- Reservoirs, water treatment plants
Why use it
- Flexible coating.
- Environment friendly – totally free of carcinogenic materials like coal tar, pitch and aromatic hydrocarbons.
- Cost saving – primer less system, easy brush, roller or spray application.
- Impermeable waterproof coating.
- Protects sub-structures as well as superstructures against weathering and environmental attacks.
- Excellent chemical resistance, as well as resisting algae and bacterial growth.
- UV resistant. Colour change may occur under direct sunlight without affecting the performance.
Technical properties
Values @ 25°C ± 2
| Colour | Many Colors |
|---|---|
| Mixed densityASTM D1475 | 1.30 ± 0.05 g/ml |
| Solid content: ISO 3251 | 68 +/-2% (Weight) 56 +/- 2% (Volume) |
| Pot life: ASTM D2471 | 2 hr @ 20°C 1 hr @ 35°C |
| Bond strengthASTM D4541 | > 2 MPa (concrete failure) |
| Tack free timeASTM D1640 | 4 - 5 hr |
| Overcoating timeASTM D1640 | 6 hr up to 24 hr @ 20°C 4 hr up to 16 hr @ 35°C |
| Full cure: ASTM D1640 | 7 days |
| Taber abrasion resistance: (1000 g, 1000 cycle) ASTM D4060, weight loss CS17 wheel | <150 milligram |
| Bend testASTM D522 | Pass, no cracks (Using ¼˝ mandrel @ 25°C) |
| VOCASTM D2369 | < 20 g/ ltr (complies with LEED) |
Standards and approvals
KingCoat PA550 complies with the requirements of EN1504-2 Surface Protection Systems for Coatings (C) Principles 2.2 and 5.1.
How to use
Surface preparation
All surfaces must be clean and free from dust or loose material.
Concrete surfaces
Substrates to be prepared by mechanical means such as grit blasting, or other suitable removal methods. Following the preparation of a concrete surface, care should be taken to ensure that any surface irregularities are filled with a twin pack epoxy putty such as KingRep EP10 and KingRep 5.
Metal surfaces
Any metal surfaces should be grit blasted to a near white finish, meeting the requirements of Swedish standards SA2½ or equivalent.
Priming
Concrete surfaces
Priming is not required on properly prepared concrete surfaces – see preparation section.
Metal surfaces
All metal surfaces should be coated immediately after preparation.
If this is not possible and to eliminate formation of rust, prime the metal surfaces using a 100% solids epoxy primer.
Mixing
The contents of the resin pack should be thoroughly stirred to disperse any possible settlement. The entire contents of both the hardener and resin cans should be poured into a suitable sized mixing vessel.
It is recommended that the two components are mixed together mechanically using a slow speed (400 - 600 rpm) electric drill fitted with a mixing paddle. Mixing should be carried out continuously for 3 - 5 minutes, until a uniform consistency is achieved.
Application
A minimum 2 coat application is generally recommended to ensure a full, unbroken coating is achieved.
BRUSH/ROLLER APPLICATION
Once mixed, the material should be immediately applied, ensuring that a continuous coating is obtained.
The first coat is applied to achieve a uniform coating with a wet film thickness not less than 200 microns, and should be allowed to dry for at least 2 hours at 35°C before the application of the second coat.
The second coat should be applied after 4hours (at 35°C) from the application of the first coat. The second coat should be applied as above again achieving a wet film thickness not less than 200 microns.
SPRAY APPLICATION
Where large areas are to be coated, it is advisable to consider spray application.
REPAIRING AND OVER COATING
Any applications of KingCoat PA550 which have become damaged can be readily be over coated.
The existing surface should be well abraded, using a stiff wire brush, or similar, to ensure that a good mechanical bond will be achieved between the two layers. Any loose material should be removed.
Over coating works can then proceed as for new work, always ensuring that the prepared substrate is free from any moisture.
| Occassional Spillage. Chemical Resistance after full cure (7 days @ 25°C), ASTM D1308 (spot test @ 1 hr) | |
|---|---|
| Organic acids | |
| Lactic Acid 10% | R |
| Oleic Acid sat. | R |
| Citric Acid 25% | R |
| Vinegar 10% | R |
| Inorganic bases | |
| Sodium Hydroxide 50% | R |
| Ammonia Solution 10% | R |
| Potassium Hydroxide 50% | R |
| Aqueous solutions | |
| Sodium Chloride sat | R |
| Tap water | R |
| Chlorinated water | R |
| Dead sea water | R |
| Solvents | |
| White spirit | R |
| Xylene | R |
| Toluene | R |
| Acetone | R |
| Oils & Fuels | |
| Benzyl alcohol | R |
| Brake fluid | R |
| Engine oil | R |
| Diesel | R |
| Kerosene | R |
| Detergents & Soaps | R |
| Inorganic acids | |
| Sulphuric Acid 25% | R |
| Phosphoric Acid 20% | R |
| Hydrochloric Acid 10% | R |
| Nitric Acid 10% | R |
Cleaning
Tools and equipment should be cleaned with solvent immediately after use.
Limitations and notes
- KingCoat PA550 is formulated for application to clean sound substrates of steel or concrete, and where it can be protected from contact with water for the first 24 hours after application as discoloration could occur.
- For cold weather working (down to 5°C), it is recommended that materials are stored in a heated building and only removed immediately before use. Accelerated heating methods are not to be utilized under any circumstances. Application to commence while temperature is 5°C and rising.
- In hot weather working conditions (35°C) and above, it is recommended to keep material in a cool shaded area to ensure ease of application.
Coverage, packaging and storage
Coverage
The coverage rate is 0.21 kg/m² @ 150 microns.
Packaging
KingCoat PA550 is available in 14 kg packs (10 litre).
Storage
Shelf life is 1 year when stored under cover, out of direct sunlight and protected from extremes of temperature. Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage advice consult KingKrete's Technical Services Department.
Health and safety
As with all chemical products, care should be taken during use and storage to avoid contact with eyes, mouth, skin and foodstuffs. Treat splashes to eyes and skin immediately. If accidentally ingested, seek medical attention. Reseal containers after use. Use in well ventilated areas and avoid inhalation.
| CHEMICAL RESISTANCE | |
|---|---|
| Based on test method ASTM D1308, immersion in the below chemicals. After 7 days | |
| Hydrochloric Acid 10% | R |
| Phosphoric Acid 20% | SS |
| Sulphuric Acid 25% | R |
| Nitric Acid 10% | RS |
| Diesel | R |
| Ammonia Solution 10% | R |
| Detergent Solutions | R |
| Engine | R |
| Tap water | R |
| Sea water | R |
| Chlorinated water | R |
R: Resistant
RS: Resistant with slight discoloration
SS: Slight softining
| Performance characteristics | EN 1504-2 requirement | Measured value |
|---|---|---|
| Capillary absorption: EN 1063-3 | < 0.1 kg/m².h⁰·⁵ | Pass |
| Adhesion strength: EN 1542 | ≥ 1.5 MPa | ≥ 2.0 MPa (flexible system with trafficking) |
| Abrasion resistance: EN ISO 5470-1 | < 3000 mg H22, 1 kg, 1000 cycle | Pass < 1000 mg |
| Impact resistance: EN ISO 6272-1 | Class I: ≥ 4 Nm Class II: ≥ 10 Nm Class III: ≥ 20 Nm | Class III |
| Crack bridging: EN 1062-7 | A1: > 0.10 mm A2: > 0.25 mm A3: > 0.50 mm A4: > 1.25 mm A5: > 2.50 mm | Class A3 |
| Artificial weathering: EN 1062-11:2002 | After 2000 hr No blistering, cracking, or flaking | Pass |