Sikafloor®-381 ECF
2-part epoxy electrostatic conductive chemically resistant floor covering
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)".
- High chemical resistance
- High mechanical resistance
- Impermeable to liquids
- Abrasion resistant
- Electrostatically conductive
- Optional surface profiles slip resistant or smooth
Usage
The Product is used as a:- Smooth electrostatically conductive floor covering
- Broadcast electrostatically conductive floor covering
- Automotive facilities
- Bunding areas
- Storage areas
- Warehouses
- Aircraft hangars
- Battery-charging rooms
- Areas with a high explosion risk
Advantages
- High chemical resistance
- High mechanical resistance
- Impermeable to liquids
- Abrasion resistant
- Electrostatically conductive
- Optional surface profiles slip resistant or smooth
Packaging
Container Part A | 21.25 kg containers |
Container Part B | 3.75 kg containers |
Container Part A + Part B | 25 kg containers |
Bulk packaging:
Container Part A | 250 kg drums |
Container Part B | 190 kg drums |
Refer to the current price list for available packaging variations.
Colour
IMPORTANT
Ensuring consistent colour matching
For consistent colour matching, make sure the Product in each area is applied from the same control batch numbers.
Part A | coloured liquid |
Part B | transparent liquid |
Available in a wide range of colours. Please contact Sika customer service for availability.
Exact colour matching
Note: Due to the nature of 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.
Note: When the Product is exposed to direct sunlight, there may be some discolouration and colour variation. This has no influence on the function and performance of the Product.
Product Details
ENVIRONMENTAL INFORMATION
Contributes towards satisfying Materials and Resources (MR) Credit: Building product disclosure and optimization — Environmental Product Declarations under LEED® v4
Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by Institut für Bauen und Umwelt e.V. (IBU)
APPROVALS / STANDARDS
-
CE marking and declaration of performance based on EN 1504-2:2004 Products and systems for the protection and repair of concrete structures — Surface protection systems for concrete — Coating
-
CE marking and declaration of performance based on EN 13813:2002 Screed material and floor screeds — Screed material — Properties and requirements — Synthetic resin screed material
-
Conforms to the requirements of DIN IEC 61340-4-1 (Internal Test)
-
Fire testing EN 13501-1:2012-01, Sikafloor®-381 ECF, MPA, Report No. 2013-B-1412
-
Particle Emission ISO 14644-1, Sikafloor®-381 ECF, CSM Fraunhofer, Test report No. SI 1709-952
-
Outgassing VOC ISO 14644-8, Sikafloor®-381 ECF, CSM Fraunhofer, Test report No. SI 1709-952
-
Spark resistance UFGS-09 97 23, Sikafloor®-381 ECF, kiwa, Test report No. P 8625-E ▪
Chemical Base
Epoxy
Shelf Life
24 months from date of production
Storage Conditions
The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.
Refer to the current Safety Data Sheet for information on safe handling and storage.
Density
Resin | Density at +23°C |
Part A | 1.77 kg/L |
Part B | 1.04 kg/L |
Mixed resin unfilled | 1.60 kg/L |
Solid content by mass
100 %
Solid content by volume
100 %
Shore D Hardness
Cured 7 days at +23 °C | ~82 |
Abrasion Resistance
| ~40 mg, resin filled 1 : 0.3 with F34 sand (CS10 /1000 | (DIN 53109) |
Compressive Strength
Cured 14 days at +23 °C (filled 1:0.3 with F34 sand) | ~80 MPa |
Flexural Strength
Cured 14 days at +23 °C (filled 1:0.3 with F34 sand) | ~55 MPa |
Tensile adhesion strength
| > 1,5 N/mm² (failure in concrete) | (EN ISO 4624) |
Electrostatic Behaviour
Resistance to ground | Rg < 109 Ω |
Typical average resistance to ground | Rg < 106 Ω |
This product fulfils the requirements of ATEX 153.
Readings may vary, depending on ambient conditions (i.e. temperature, humidity) and measurement equipment.
Service Temperature
IMPORTANT: Exposure to moist or wet heat
Sikafloor® broadcast systems with a minimum thickness of ~3–4 mm, that use this Product, can resist short-term moist or wet heat of up to +80 °C if the exposure is only temporary (less than 1 hour). While the Product is exposed to temperatures up to +80 °C, simultaneous mechanical or chemical strain may cause damage to the Product.
- Do not expose the Product to chemical or mechanical strain at elevated temperatures
| Exposure | Dry heat |
| Permanent | +50 °C |
| Short-term max. 7 days | +80 °C |
| Short-term max. 12 hours | +100 °C |
Chemical Resistance
Laboratory defined resistance to many individual chemicals. Before proceeding, contact Sika Technical Services for specific information.
Application
Mixing Ratio
Part A : Part B (by weight) | 85 : 15 (by weight) |
Product Temperature
Maximum | +30 °C |
Minimum | +10 °C |
Ambient Air Temperature
Maximum | +30 °C |
Minimum | +10 °C |
Relative Air Humidity
80 % r.h. max
Dew Point
Beware of condensation. The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high humidity conditions increase the probability of blooming.
Substrate Temperature
Maximum | +30 °C |
Minimum | +10 °C |
Substrate Moisture Content
Substrate | Test method | Moisture content |
Cementitious substrates | Sika® Tramex moisture metre | ≤ 4% |
Cementitious substrates | Calcium carbide method (CM-method) | ≤ 4 % |
No rising moisture (ASTM D4263, polyethylene sheet)
Pot Life
Temperature | Time |
+10 °C | ~60 minutes |
+20 °C | ~30 minutes |
+30 °C | ~15 minutes |
Curing Time
Substrate temperature | Maximum | Minimum |
+10 °C | ~3 days | ~48 hours |
+20 °C | ~2 days | ~24 hours |
+30 °C | ~1 day | ~12 hours |
Note: 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, particularly temperature and relative humidity.
Consumption
Coating system | Product | Consumption |
Wearing course horizontal areas (Film thickness ~ 1.5 mm) | Sikafloor®-381 ECF filled with quartz sand F34 (0.1 - 0.3 mm) | 2.5 kg/m² Binder + quartz sand |
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) |
The wearing course for horizontal areas filling ratio is dependent on the substrate temperature.
Temperature | Parts A+B : Filler (by weight) | Consumption (kg/m2 at 1.5 mm) |
+10 °C to +15 °C | 1 : 0 | 2.5 kg binder only |
+15 °C to +20 °C | 1 : 0.1 | 2.3 kg binder + 0.2 kg quartz sand |
+20 °C to +30 °C | 1 : 0.2 | 2.1 kg binder + 0.4 kg quartz sand |
Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
Excessive layer thickness
Note: Applying the Product in excess of the stated thickness causes reduced conductivity.
EQUIPMENT
Select the most appropriate equipment required for the project:
MIXING
Electric single paddle mixer (300-400 rpm)
Electric double paddle mixer (> 700 W, 300-400 rpm)
Scraper
Clean mixing containers
APPLICATION
Mixed material carrier
Large-Surface Scraper No. 656, Toothed blades No. 25 (www.polyplan.com)
Steel spike rollers
SUBSTRATE QUALITY
IMPORTANT
Incorrect treatment of cracks
The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.
TREATMENT OF JOINTS AND CRACKS
Construction joints and existing static surface cracks in substrate require pre-treating before full layer application. Use Sikadur® or Sikafloor® resins.
SUBSTRATE CONDITION
Cementitious substrates (concrete / screed) must be structurally sound and of sufficient compressive strength (minimum 25 N/mm2) with a minimum tensile strength of 1.5 N/mm2. Substrates must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.
SUBSTRATE PREPARATION
MECHANICAL SUBSTRATE PREPARATION
IMPORTANT
Exposing blow holes and voids
When mechanically preparing the surface, make sure to fully expose blow holes and voids.
- Remove weak cementitious substrates.
- Prepare cementitious substrates mechanically using abrasive blast cleaning or planing / scarifying equipment to remove cement laitance.
- Before applying thin layer resins, remove high spots by grinding.
- Use industrial vacuuming equipment to remove all dust, loose and friable material from the application surface before applying the Product.
- Use products from the Sikafloor®, Sikadur® and Sikagard® range of materials to level the surface or fill cracks, blow holes and voids.
Substrate levelling for conductive floors
Note: The concrete or screed substrate has to be primed or levelled in order to achieve an even surface. Unevenness influences the film thickness and thus the conductivity.
Contact Sika® Technical Services for additional information on products for levelling and repairing defects.
SUBSTRATE PREPARATION OF NON-CEMENTITIOUS SUBSTRATES
For information on substrate preparation of non-cementitious substrates, contact Sika technical services.
MIXING
- Mix Part A (resin) for ~10 seconds with a single paddle mixer (300–400 rpm).
- Add Part B (hardener) to Part A. Switch to an electric double paddle mixer (300–400 rpm, > 700 W).
- While mixing Parts A + B, gradually add the required filler or aggregates.Note Avoid over mixing to minimise air entrainment.
- Mix for a further 2 minutes until a uniform mix is achieved.
- To ensure thorough mixing pour materials into a clean container and mix again for at least 1 minute to achieve a smooth consistent mix.
- During the final mixing stage, scrape down the sides and bottom of the mixing container with a straight edge trowel or spatula.
APPLICATION
IMPORTANT
Protect from moisture
After application, protect the Product from damp, condensation and direct water contact for at least 24 hours.
IMPORTANT
No application on rising moisture
Do not apply on substrates with rising moisture.
IMPORTANT
Temporary heating
If temporary heating is required, do not use gas, oil, paraffin or other fossil fuel heaters. These produce large quantities of both carbon dioxide and water vapour, which may adversely affect the finish.
- For heating, use only electric powered warm air blower systems.
IMPORTANT
Indentations
Under certain conditions, underfloor heating or high ambient temperatures combined with high point loading may lead to indentations in the resin.
IMPORTANT
Temporary moisture barrier
If the substrate moisture content measured with the CM-method is > 4% by weight, apply a temporary moisture barrier consisting of Sikafloor® EpoCem®.
- Contact Sika technical services for more information.
WEARING COURSE (HORIZONTAL AREAS)
Preconditions
IMPORTANT Do not blind the primer.The conductive priming coat has been applied and has dried tack-free all over.
- Pour the mixed Product onto the surface. Note The consumption is specified in Application Information.
- Apply the Product evenly over the surface with a serrated trowel.
- Turn the serrated trowel and smooth the surface for an aesthetically higher grade of finish.
- Back roll the surface in two directions at right angles with a spike roller.
WEARING COURSE (VERTICAL AREAS)
- Apply the Product evenly over the surface with a trowel.
- Place the earthing plates.
- Apply the conductivity layer.
- Apply a second layer of the Product evenly over the surface with a trowel.
WEARING COURSE WITH SLIP RESISTANCE
Preconditions
IMPORTANT Do not blind the primer.The conductive priming coat has been applied and has dried tack-free all over.
- Pour the mixed Product onto the surface. Note The consumption is specified in Application Information.
- Apply the Product evenly over the surface with a serrated trowel.
- Broadcast the surface to excess with silicon carbide as specified in consumption.
- After final drying sweep off the surplus silicon carbide. Note The surface must be vacuumed.
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Thinner C immediately after use. Hardened material can only be removed mechanically.