Sikafloor®-260 PurCem®
Sikafloor®-260 PurCem® is a multi-component, water-based coloured polyurethane hybrid screed with self-smoothing properties and a glossy finish. It has an impervious, smooth and scratch resistant surface and is typically installed at 1.5 – 3 mm thickness.
- Good chemical resistance.
- Gloss and scratch resistant surface.
- High mechanical resistance.
- High glass transition point.
- Non tainting / odourless.
- VOC free.
- Can be applied to substrates with high moisture content.
Usage
Sikafloor®-260 PurCem® is used as a scratch coat primer, basecoat and wear coat layer in Sikafloor® PurCem® Gloss system build ups, in areas of medium to heavy loading, high chemical exposure and abrasion.Advantages
- Good chemical resistance.
- Gloss and scratch resistant surface.
- High mechanical resistance.
- High glass transition point.
- Non tainting / odourless.
- VOC free.
- Can be applied to substrates with high moisture content.
Packaging
| Part A | 5.00 kg plastic pail |
| Part B | 5.00 kg plastic jerrycan |
| Part C | 15.00 kg plastic lined, double paper bags |
Part A+B+C: 25.0 kg ready to mix units
Colour
| Part A | coloured liquid |
| Part B | brown liquid |
| Part C | natural grey powder |
Standard colours: Beige, Dusty Grey, Yellow Green, Golden Yellow, Ultramarine Blue, Carmine Red, Pebble Grey
Product Details
ENVIRONMENTAL INFORMATION
Complies with requirements of DIBt (2010) and AgBB for use in in indoor environment. Test report No. 392-2014-00156701CE. Eurofin Product Testing.
APPROVALS / STANDARDS
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Synthetic resin screed material according to EN 13813:2002, Declaration of Performance 81392218, and provided with the CE marking.
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Taint potential. Report No. S/REP/134217/1 Campden BRI (Chipping Campden (Ltd).
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Food Industry Approval. Certificate of Compliance to be used safely as a floor coating in food sector. Short term contact of the coating with the foodstuffs is safe as long as any hygienic regulations are not violated. Report No. 38653U14. ISEGA Forschungsund Untersuchungs-Gesellschaft mbH.
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Cleanibility. Clean Room Suitable Material (Riboflavin test) test report SI 1501-752, Sikafloor®-260 PurCem®. Fraunhofer Institute for Manufacturing and Engineering and Automation IPA.
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Biological resistance. Clean Room Suitable Material Test report SI 1412-740, Sikafloor®-260 PurCem®.
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Fire Classification test performed at LGAI Technological Center report 15/9284-338 Part 2.
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Slip resistance test according to DIN EN 13036-4:2011-12 performed ar MPI Prüfinstitut report no.13 1026 - SRT/1.
Chemical Base
Water-based polyurethane cement hybrid
Shelf Life
| Part A | 9 months from date of production. Protect from freezing. |
| Part B | 12 months from date of production. Protect from freezing. |
| Part C | 6 months from date of production. Must be protected from humidity. |
Storage Conditions
Original, unopened and undamaged sealed packaging, in dry conditions at temperature between +5 C° and +30 °C.
Density
| Part A+B+C mixed | ~ 1.9 kg/l |
Note: Density value at +20 oC.
Shore D Hardness
| ~80 | (ASTM D 2240) |
Compressive Strength
| ~50 N/mm2 (28 days at +23°C / 50% r.h.) | (BS EN 13892-2) |
Flexural Strength
| ~15 N/mm2 (28 days at +23°C / 50% r.h.) | (BS EN 13892-2) |
Tensile adhesion strength
| concrete failure | (EN 1542) |
Reaction to Fire
| Bfl-s1 | (EN 13501-1) |
Application
Mixing Ratio
Part A : B : C = 1 : 1 : 3 (packaging size = 5 : 5 : 15) by weight
Mix full units only.
Layer Thickness
Scratch coat: 0.5–1.5 mm
Base- and wear coat: 1.5–3 mm
Ambient Air Temperature
+10 °C min. / +35 °C max.
Relative Air Humidity
80 % max.
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3°C above dew point to reduce the risk of condensation or other disturbance of the surface on the floor finish.
Substrate Temperature
+10 °C min. / +35 °C max
Substrate Moisture Content
Can be installed on substrates with increased moisture content (6 % checked by Tramex). The substrate needs to be visibly dry and have adequate pull-off strength min 1.5 N/mm2 No ponding water. Check rising moisture.
Pot Life
| Temperatures | Time |
| +10 °C | ~ 35–40 minutes |
| +20 °C | ~ 22–25 minutes |
| +30 °C | ~ 15–18 minutes |
| +35 °C | ~ 12–15 minutes |
Curing Time
Before overcoating Sikafloor®-260 PurCem®
| Substrate temperature | Minimum | Maximum |
| +10 °C | 24 hours | 72 hours |
| +20 °C | 24 hours | 48 hours |
| +30 °C | 12 hours | 24 hours |
| +35 °C | 12 hours | 24 hours |
Times are approximate and will be affected be changing ambient and substrate conditions, particularly temperature and relative humidity.
If used other primers than Scratch Coat refer the Technical Data Sheet of the respective product. Make sure that the primer and the scratch coat layer is fully cured before application of Sikafloor® PurCem® previous layer.
Consumption
~1.8 kg/m2/mm
MIXING
Mix first the component A (pigmented liquid) thoroughly in the pail 10–15 sec. Then add component B (brown liquid) into A and mix together for 15 - 30 sec. using a stirrer in a low speed electric drill until homogenous mixture. Then add component C to A+B mixing simultaneously with larger mixer. When the bag of component C is empty, continue mixing further 3 min depending on the temperature and the mixer efficiency.
APPLICATION
Prior to application, confirm substrate moisture content, relative humidity and dew point. As a scratch coat Sikafloor®-260 PurCem® can be applied using a steel trowel. As a body coat Sikafloor®-260 PurCem® can be applied using a toothed trowel or pin screed, to the desired thickness, or a steel trowel. Remove air with a spike roller.
For further details please refer to the related system data sheet.
CLEANING OF TOOLS
Clean all tools and application equipment with Thinner C immediately after use. Hardened / cured material can only be mechanically removed.