Sikafloor®-381 ECF
Sikafloor®-381 ECF is a two part, electrostatic conductive self-smoothing, coloured epoxy resin with very high chemical resistance. "Total solid epoxy composition acc. to the test method Deutsche Bauchemie e.V. (German Association for construction chemicals)".
- Very high chemical resistance
- High mechanical resistance
- Impervious to liquids
- Abrasion resistant
- Electrostatic conductive
- Slip resistant surface possible
Usage
Sikafloor®-381 ECF is used as:- Chemically highly resistant coating for concrete and screed surfaces in bund areas for the protection against water contaminating liquids (according to resistance table)
- Electrostatic conductive wearing layer for areas subject to chemical and mechanical exposure in production and storage facilities
Advantages
- Very high chemical resistance
- High mechanical resistance
- Impervious to liquids
- Abrasion resistant
- Electrostatic conductive
- Slip resistant surface possible
Packaging
Part A | 21.25 kg containers |
Part B | 3.75 kg containers |
Part A+B | 25 kg ready to mix units |
| Bulk packaging: | |
| Part A | 250 kg drums |
| Part B | 190 kg drums |
Colour
Resin - part A | coloured, liquid |
Hardener - part B | transparent, liquid |
Almost unlimited choice of colour shades. Due to the nature of the carbon fibres providing the conductivity, it is not possible to achieve exact colour matching. With very bright colours (such as yellow and orange), this effect is increased. Under direct sun radiation there may be some discolouration and colour deviation, this has no influence on the function and performance of the coating.
Product Details
SUSTAINABILITY
LEED Rating
Sikafloor®-381 ECF conforms to the requirements of LEED EQ Credit 4.2: Low-Emitting Materials: Paints & Coatings SCAQMD Method 304-91 VOC Content < 100 g/l
APPROVALS / CERTIFICATES
- Self-smoothing, coloured epoxy resin coating according to EN 1504-2: 2004 and EN 13813, DoP 02 08 01 02 019 0 000010 2017, certified by Factory Production Control Body No. 0921, certificate 2017, and provided with the CE-mark
- Conforms to the requirements of DIN IEC 61340-4-1 (Internal Test)
- Reaction to fire classification acc. to DIN EN 13301-1. Test report No.: 2013-B-1413/01. The fire behaviour of Sikafloor® -381 ECF is classified as: Bfl-s1
- Particle emission certificate Sikafloor®-381 ECF CSM Statement of Qualification - ISO 14644-1, class 4 - Report No. SI 1312-681
- Spark resistance in accordance with UFGS-09 97 23 of coating systems, Test report P 8625-E, Kiwa Polymer Institut
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Composition
Epoxy
Shelf life
24 months from date of production
Storage conditions
The packaging must be stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5°C and +30°C.
Density
Part A | ~ 1.77 kg/l |
Part B | ~ 1.04 kg/l |
Mixed resin | ~ 1.6 kg/l |
All Density values at +23°C
Solid content by weight
~100%
Solid content by volume
~100%
Shore D Hardness
~82 (7 days / +23°C) | (DIN 53 505) |
Abrasion resistance
Resin (filled 1:0.3 with F34): ~ 40 mg (CS 10 wheel / 1000 g / 1000 cycles) (8 days / +23°C) | (DIN 53 109) (Taber Abraser Test) |
Compressive strength
Resin (filled 1:0.3 with F34): ~ 80 N/mm² (14 days / +23°C) | (EN 196-1) |
Tensile strength in flexure
Resin (filled 1:0.3 with F34): ~ 55 N/mm² (14 days / +23°C) | (EN 196-1) |
Tensile adhesion strength
> 1.5 N/mm² (failure in concrete) | (ISO 4624) |
Chemical resistance
Resistant to many chemicals. Please contact Sika technical service.
Temperature resistance
Exposure* | Dry heat |
Permanent | +50°C |
Short-term max. 7 d | +80°C |
| Short-term max. 12 h | +100°C |
Short-term moist/wet heat* up to +80°C where exposure is only occasional (i.e. during steam cleaning etc.)
*No simultaneous chemical and mechanical exposure.
Electrostatic behaviour
Resistance to ground1) | Rg < 109 Ω |
Typical average resistance to ground2) | Rg < 106 Ω |
1) This product fulfils the requirements of ATEX 137
2) Readings may vary, depending on ambient conditions (i.e. temperature, humidity) and measurement equipment.
Application
Mixing ratio
Part A : part B = 85 : 15 (by weight)
Ambient air temperature
+10°C min. / +30°C max.
Relative air humidity
80% r.h. 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 blooming on the floor finish.
Substrate temperature
+10°C min. / +30°C max.
Substrate moisture content
< 4% pbw moisture content. Test method: Sika®-Tramex meter, CM - measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene-sheet).
Pot Life
| Temperatures | Time |
+10°C | ~ 60 minutes |
+20°C | ~ 30 minutes |
| +30°C | ~ 15 minutes |
Curing time
Before applying Sikafloor®-220 W Conductive on Sikafloor®-381 ECF allow:
Substrate temperature | Minimum | Maximum |
+10°C | 48 hours | 3 days |
+20°C | 24 hours | 2 days |
| +30°C | 12 hours | 1 day |
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Applied product ready for use
Temperature | Foot traffic | Light traffic | Full cure |
| +10°C | ~ 24 hours | ~ 3 days | ~ 10 days |
| +20°C | ~ 18 hours | ~ 2 days | ~ 7 days |
| +30°C | ~ 12 hours | ~ 1 day | ~ 5 days |
Note: Times are approximate and will be affected by changing ambient conditions.
Consumption
Coating System | Product | Consumption |
| Wearing course horizontal areas (Film thickness ~ 1.5 mm) | Sikafloor®-381 ECF filled with quartz sand 0.1 - 0.3 | 2.5 kg/m² Binder + quartz sand 10 - 15°C: without filling 15 - 20°C: 1 : 0.1 pbw (2.3 + 0.2 kg/m²) 20 - 30°C: 1 : 0.2 pbw (2.1 + 0.4 kg/m²) |
| Wearing course vertical areas (Film thickness ~ 1.5 mm) | Sikafloor®-381 ECF + 2.5 - 4 wt.-% Extender T | 2 x 1.25 kg/m² |
| Broadcast system with slip resistance (Film thickness ~ 2.5 mm) | Sikafloor®-381 ECF, broadcast to excess with Silicon Carbide 0.5 - 1.0 mm | 1.6 kg/m² Binder without filling Silicon Carbide 0.5 - 1.0 mm (5 - 6 kg/m²) |
These figures are theoretical and does not allow for any additional material required due to surface porosity, surface profile, variations in level and wastage etc.
MIXING
Prior to mixing, stir part A mechanically. When all of part B has been added to part A, mix continuously for 2 minutes until a uniform mix has been achieved. When parts A and B have been mixed, add the quartz sand 0.1 - 0.3 mm and mix for a further 2 minutes until a uniform mix has been achieved. To ensure thorough mixing pour materials into another container and mix again to achieve a consistent mix. Over mixing must be avoided to minimise air entrainment. Sikafloor®-381 ECF must be thoroughly mixed using a low speed electric stirrer (300 - 400 rpm) or other suitable equipment.
APPLICATION
Wearing course (horizontal areas):
Sikafloor®-381 ECF is poured, spread evenly by means of a serrated trowel e.g. Large-Surface Scraper No. 656, Toothed blades No. 25 (www.polyplan.com). After spreading the material evenly, turn the serrated trowel and smooth the surface in order to achieve an aesthetically higher grade of finish. Roll immediately (within max. 10 minutes of application) in two directions with a steel spiked roller to ensure even thickness and to remove entrapped air. To obtain the highest level of aesthetic finish, spike roll in two directions at a 90 degree angle, passing only once in each direction.
Wearing course (vertical areas):
The first layer of Sikafloor®-381 ECF, mixed with 2.5 - 4 wt.-% Extender T, has to be applied by trowel. After placing of the earthing plates and application of the conductivity layer, apply the second layer of Sikafloor®-381 ECF, mixed with 2.5 - 4 wt.-% Extender T, by trowel.
Wearing course with slip resistance:
Sikafloor®-381 ECF is poured, spread evenly by means of a serrated trowel and the fresh layer is broadcasted to excess with silicon carbide 0.5 - 1.0 mm. After final drying the surplus silicon carbide must be swept off and the surface must be vacuumed.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be mechanically removed.