Sikafloor® -239 EDF2-part epoxy electrostatically dissipative self-smoothing system
发布时间：2023/05/15
Product Data Sheet
Edition 03/03/2012 EN
Sikafloor® -239 EDF
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Sikafloor® -239 EDF
Sikafloor® -239 EDF2-part epoxy electrostatically dissipative self-smoothing system
Product
Description
Sikafloor® -239 EDF is a two part, self-smoothing, coloured epoxy resin coating.
Uses
Decorative and protective dissipative self-smoothing system for concrete or
cement screeds with normal up to medium heavy wear.
Particularly suitable for areas with requirements for a low electrostatic charge
(Body-voltage) and dissipative surface.
Typical applications include industries that process, assemble, install,
package, test or transport, such as clean room, pharmaceutical, automotive
industries etc.
Characteristics /
Advantages
Meets GB/T 22374-2008 Standard
Electrostatically dissipative
Good mechanical and chemical resistance
Easy application
Easy to clean
Solvent free
Liquid proof
Tight
Semi-gloss surface
Test
Approval / Standards
Tested in accordance with IEC 61340-4-1
Product Data
Form
Appearance / Colours
Resin - part A: coloured, liquid
Hardener - part B: transparent, liquid
Almost unlimited choice of colour shades.
Due to the nature of carbon fibers 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 light there may be some
discolouration and colour variation, this has no influence on the function and
performance of the coating.
Packaging
Part A: 20.25 kg containers
Part B: 4.75 kg containers
Part A+B: 25 kg ready to mix units
Storage
Storage Conditions /
Shelf-Life
12 months from date of production if stored properly in original, unopened and
undamaged sealed packaging, in dry conditions at temperatures between +5°C and
+30°C.
Construction2
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Sikafloor® -239 EDF
Technical Data
Chemical Base
Epoxy
Density
Part A: ~ 1.70 kg/l (DIN EN ISO 2811-1)
Part B: ~ 1.03 kg/l
Mixed resin: ~ 1.5 kg/l
Filled resin 1 : 0.36 : ~ 1.7 kg/l
All Density values at +23°C
Solid Content
~100% (by volume) / ~100% (by weight)
Electrostatic Behaviour
Resistance to ground RG: 106 -109 Ohm (IEC 61340-4-1)
Body voltage generation: < 100 V (ESD STM 97.2-1999 /
IEC 61340-4-5)
Testing conditions: Temperature 23ºC ± 2ºC, Relative Humidity RH: 50% ± 3%
Mechanical / Physical
Properties
Compressive Strength
Resin: > 70 N/mm2 (28 days / +23°C) (EN 196-1)
Flexural Strength
Resin: ~ 40 N/mm2 (28 days / +23°C) (EN 196-1)
Bond Strength
> 1.5 N/mm² (failure in concrete) (ISO 4624)
Shore D Hardness
> 70 (7 days / +23°C)
(DIN 53 505)
Abrasion Resistance
60 mg (CS 10/1000/1000) (28 days / +23°C) (DIN 53 109 (Taber Abrader Test))
Resistance
Chemical Resistance
Resistant to many chemicals. Please ask for a detailed chemical resistance table.
Exposure*
Dry heat
Permanent
+50°C
Short-term max. 7 d
+80°C
Thermal Resistance
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.
System
Information
System Structure
Self-smoothing system ca. 1.5 mm – semi-gloss finish:
Primer: 1 x Sikafloor® -156 / -161
Earthing connection: Sikafloor® Earthing Kit
Conductive coat: 1 x Sikafloor® -220 W Conductive
Conductive wearing course: 1 x Sikafloor® -239 EDF, filled with
Sikafloor® -Filler 1-cn or Sikadur® 505Q quartz sand
Note: The system configurations as described must be fully complied with and may
not be changed. Due to the nature of carbon fibres providing the conductivity,
surface irregularities might be possible. This has no influence on the function and
performance of the coating. 3
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Sikafloor® -239 EDF
Application Details
Coating System Product Consumption
Primer
Sikafloor® -156 / - 161
0.3 - 0.5 kg/m²
Levelling (optional)
Sikafloor® -156 / -161
mortar
Refer to PDS of Sikafloor® -156 or
Sikafloor® -161
Conductive coat
Sikafloor® -220 W
Conductive
0.08 - 0.10 kg/m²
Maximum 2.5 kg/m²
Binder + Sikafloor® -Filler 1-cn
Wearing course smooth
(Film thickness ~ 1.5 mm)
Sikafloor® -239 EDF
filled with Sikafloor® -
Filler 1-cn
ca. 1.0 mm film thickness:
1:0.2 pbw (~ 1.3 + 0.3 kg/m²)
ca. 1,5 mm film thickness:
Depending on the temperature the filling
grade varies from:
1 : 0.1 pbw (2.3 + 0.2 kg/m²) to
1 : 0.2 pbw (2.1 + 0.4 kg/m²)
Wearing course smooth
(Film thickness ~ 1.5 mm)
Sikafloor® -239 EDF
filled with Sikadur 505Q
quartz sand 0.1-0.3 mm
Maximum 2.5 kg/m²
Binder + quartz sand Sikadur 505Q*
Depending on the temperature the filling
grade varies from:
1 : 0.1 pbw (2.3 + 0.2 kg/m²) to
1 : 0.36 pbw (1.83 + 0.66 kg/m²)
Wearing course textured
(Film thickness ~ 0.5 mm)
Sikafloor® -239 EDF +
Extender T +
Thinner C
0.75 kg/m²
1.25 % (by weight)
2% (by weight)
Consumption / Dosage
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.
*All values have been determined using Sikadur® 505Q quartz sand 0,1-0,3 mm.
Other quartz sand type will have an effect on the product, such as filling grade,
levelling properties and aesthetics.
Generally, the lower the temperature the less the filling grade.
Substrate Quality
The concrete substrate must be sound and of sufficient compressive strength
(minimum 25 N/mm2 ) with a minimum pull off strength of 1.5 N/mm2 .
The substrate must be clean, dry and free of all contaminants such as dirt, oil,
grease, coatings and surface treatments, etc.
If in doubt apply a test area first.
Substrate Preparation
Concrete substrates must be prepared mechanically using abrasive blast cleaning
or scarifying equipment to remove cement laitance and achieve an open textured
surface.
Weak concrete must be removed and surface defects such as blowholes and voids
must be fully exposed.
Repairs to the substrate, filling of blowholes/voids and surface levelling can be
carried out using appropriate products from the Sikafloor® , SikaDur® and SikaGard®
range of materials.
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.
High spots must be removed by e.g. grinding.
All dust, loose and friable material must be completely removed from all surfaces
before application of the product, preferably by brush and/or vacuum. 4
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Sikafloor® -239 EDF
Application
Conditions /
Limitations
Substrate Temperature
+10°C min. / +30°C max.
Ambient Temperature
+10°C min. / +30°C max.
Substrate Humidity
< 4% pbw moisture content.
Test method: Sika® -Tramex meter, CM - measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene-sheet).
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.
Application
Instructions
Mixing
Part A : part B = 78 : 22 (by weight)
Mixing Time
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 minimize air entrainment.
Mixing Tools
Sikafloor® -239 EDF must be thoroughly mixed using a low speed electric stirrer
(300 - 400 rpm) or other suitable equipment.
Application Method /
Tools
Prior to application, confirm substrate moisture content, r.h. and dew point.
If > 4% pbw moisture content, Sikafloor® EpoCem® may be applied as a T.M.B.
(temporary moisture barrier) system.
Levelling:
Rough surfaces need to be levelled first because varying thickness of the
Sikafloor® -239 EDF wearing course will influence the conductivity and aesthetical
appearance. Therefore use Sikafloor
®
-156 / -161 levelling mortar (see PDS).
Placing of earthing points:
See below “Notes on Application / Limits”.
Application of Sikafloor® conductive coat:
See PDS of Sikafloor® -220 W conductive.
Wearing course smooth:
Sikafloor® -239 EDF is poured, spread evenly by means of a serrated trowel.
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 in two directions with spiked roller to ensure even thickness.
Wearing course textured:
Sikafloor® -239 EDF (unfilled) is applied with a serrated trowel and then back-rolled
(crosswise) with a textured roller.
Cleaning of Tools
Clean all tools and application equipment with Thinner C immediately after use.
Hardened and/or cured material can only be removed mechanically. 5
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Sikafloor® -239 EDF
Temperatures
Time
+10°C
~ 40 minutes
+20°C
~ 25 minutes
+30°C
~ 15 minutes
Potlife
Before applying Sikafloor® -239 EDF on Sikafloor® -220 W Conductive allow:
Substrate temperature Minimum Maximum
+10°C 24 hours 72 hours
+20°C 15 hours 48 hours
+30°C 10 hours 24 hours
Waiting Time /
Overcoatability
Times are approximate and will be affected by changing ambient conditions
particularly temperature and relative humidity.
This product may only be used by experienced professionals.
Do not apply Sikafloor® -239 EDF on substrates in which significant vapour pressure
may occur.
Do not blind the primer.
Freshly applied Sikafloor® -239 EDF must be protected from damp, condensation
and water for at least 24 hours.
Avoid puddles on the surface with the primer.
Only start application of Sikafloor® conductive coat after the priming coat has dried
tack-free all over. Otherwise there is a risk of wrinkling or impairing of the
conductive properties.
Under certain conditions, underfloor heating combined with high point loading, may
lead to imprints in the resin.
If heating is required do not use gas, oil, paraffin or other fossil fuel heaters, these
produce large quantities of both CO2 and H2O water vapour, which may adversely
affect the finish. For heating use only electric powered warm air blower systems.
Tools
Recommended supplier of tools:
PPW-Polyplan-Werkzeuge GmbH, Phone: +49 40/5597260, www.polyplan.com
Serrated trowel for smooth wearing layer:
e.g. Large-Surface Scrapper No. 565, Toothed blades No. 25
Serrated trowel for textured wearing layer:
e.g. Trowel No. 999 or Adhesive Spreader No.777, Toothed blades No. 23
Maximum Layer thickness of wearing course: ~ 1.5 mm.
Excessive thickness (more than 2.5 kg/m²) causes reduced conductivity.
Before the application of a conductive flooring system, a reference area has to be
applied. This reference area must be assessed and accepted from the
contractor/client. The desired result and method of conductivity measurement must
be stated in the Specification and Method Statement. The number of conductivity
measurements is strongly recommended to be as shown in the table below:
Applied floor area Number of measurements
< 10 m² 1 measurement / m²
10-100 m² 10 - 20 measurements
> 100 m² 10 measurements / 100m²
Notes on Application /
Limitations 6
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Sikafloor® -239 EDF
The measuring points must have a distance of at least 50 cm to the next measuring
point. In case of a measurement lower/higher than required, an additional
measurement has to be carried out within 50 cm of the point with the insufficient
result.
Please note, that measuring results of the thixotropic version of Sikafloor® -239 EDF
may vary due to a difference in surface profile.
Placing of earthing points:
If the Sikafloor® Earthing Kit conductor system (system of anchored brass-plates
with stable earth connection) is applied, the instructions for use have to be followed
exactly. Every earthing point is able to conduct approx. 300 m². Ensure the longest
distance of each point in the area is max. 20 m to the next earthing point. Clean the
earthing spots carefully. For longer distances, additional earthing points have to be
placed. If site conditions do not allow placing of additional earthing points, longer
distances (>10 m) have to be bridged with copper tapes. The earthing spots have to
be connected to the ring-mains. This work must be executed and approved by an
electrical engineer and in accordance with any relevant regulations
Numbers of earth connections:
Per room al least 2 earthing points. The optimum number of earth connections
depends on the local conditions and should be specified with documents.
The incorrect assessment and treatment of cracks may lead to a reduced service
life and reflective cracking - reducing or breaking conductivity.
For exact colour matching, ensure the Sikafloor® -239 EDF in each area is applied
from the same control batch numbers.
When Sikafloor® -239 EDF is applied in thin layer, conductive fibres protrusion is
likely to happen.
Please note: According to experience the selection of the clothing, such as ESD
footwear and socks, weight of the test person, the ambient conditions, the probe
and the cleanliness of the floor, has substantial influence on the results of
measurement. Our systems have been measured under the following conditions:
ESD-footwear by
using cotton socks: "Vitaform" Specific.
Supplier: ET & ESD Lösungen Diana Conrads,
Birkenweg 12, D-89188 Merklingen,
Phon: +49 7337 922283, Fax: +49 7337 922284,
URL: http://www.et-esd.com, Email: esd@et-esd.de.
The ESD-footwear must fulfil the requirements of
DIN EN 61340-4-3 (Clime 2, resistance < 5 M Ohm).
Size of ESD-footwear: 42 (EU) (UK: 8; US: 8,5)
Weight of the test person: 90 kg
Ambient conditions: +23°C/50% rel. air moisture
Measuring tool: Resistance
to earth: Insulation Tester ET-150 PC.
Supplier: ET & ESD Lösungen Diana Conrads
Surface resistance probe: Carbon Rubber electrode. Weight: 2.50 kg
(+/- 0.25 kg); Diameter: 65 mm (+/- 5 mm);
Rubber pad hardness: Shore A 60 (+/- 10)
Measuring tool: System test: Insulation Tester ET-150 PC.
Supplier: ET & ESD Lösungen Diana Conrads
Measuring tool: Walking test: Walking Test-Kit ET-200. Supplier: ET & ESD
Lösungen Diana Conrads
Curing Details
Temperature Foot traffic Light traffic Full cure
+10°C ~ 30 hours ~ 5 days ~ 10 days
+20°C ~ 24 hours ~ 3 days ~ 7 days
+30°C ~ 16 hours ~ 2 days ~ 5 days
Applied Product ready
for use
Note: Times are approximate and will be affected by changing ambient conditions. 7
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Sikafloor® -239 EDF
Cleaning /
Maintenance
Methods
To maintain the appearance of the floor after application, Sikafloor® -239 EDF must
have all spillages removed immediately and must be regularly cleaned using rotary
brush, mechanical scrubbers, scrubber dryer, high pressure washer, wash and
vacuum techniques etc. using suitable detergents and waxes.
Value Base
All technical data stated in this Product Data Sheet are based on laboratory tests.
Actual measured data may vary due to circumstances beyond our control.
Local Restrictions Please note that as a result of specific local regulations the performance of this
product may vary from country to country. Please consult the local Product Data
Sheet for the exact description of the application fields.
Health and Safety
Information
For information and advice on the safe handling, storage and disposal of chemical
products, users shall refer to the most recent Material Safety Data Sheet containing
physical, ecological, toxicological and other safety-related data.
Notes:
The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in
good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under
normal conditions in accordance with Sika’s recommendations. In practice, the differences in materials, substrates and actual
site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability
arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written
recommendations, or from any other advice offered. The user of the product must test the product’s suitability for the intended
application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties
must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the
most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request.
Sika (China) Ltd.
No.28 Jingdong Road, Suzhou Industrial Park,
JiangSu,P.R.China
Postal Code: 215121
Tel: (86) 512 6273 2888
Fax: (86) 512 6287 7070
http://chn.sika.com
ISO 9001: 2008 ISO 14001:2004
Certificate No.:CC3576 Certificate No.:CC3577
The product is manufactured under a HKQAA
ISO9001/ISO14001
certified quality/environmental management system.
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