Sikafloor®-235 ESD
2-part, tough elastic, self-smoothing, coloured epoxy resin coating.
Sikafloor®-235 ESD is a 2-part, tough elastic, self-smoothing, coloured epoxy resin coating. Sikafloor®-235 ESD is the main wearing course of the Sikafloor® Multidur ES-25 ESD System and Sikafloor® Multidur ET-25 ESD System.
- Body voltage generation < 30 V *
- Good mechanical and chemical resistance
- Easy application
- Easy to clean & Liquid proof
- In accordance with general ESD requirements
- Fulfils ESD-requirements at > 25 % RH/+23°C**
Usage
Sikafloor®-235 ESD is used as:- 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.
Advantages
- Body voltage generation < 30 V *
- Good mechanical and chemical resistance
- Easy application
- Easy to clean & Liquid proof
- In accordance with general ESD requirements
- Fulfils ESD-requirements at > 25 % RH/+23°C**
Packaging
Part A | 19.5 kg containers |
Part B | 5.5 kg containers |
Part A+B | 25 kg ready to mix units |
Colour
Resin - part A | coloured, liquid |
Hardener - part B | transparent, liquid |
Almost unlimited choice of colour shades.
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. Under direct sun light there may be some variations and colour variation, this has no influence on the function and performance of the coating.
Product Details
ENVIRONMENTAL INFORMATION
LEED Rating
Sikafloor®-235 ESD 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 / STANDARDS
- Self-smoothing, coloured epoxy resin coating according to EN 1504-2: 2004 and EN 13813, DoP 02 08 01 02 037 0 000005 2017, certified by Factory Production Control Body No. 0921, certificate 2017, and provided with the CE-mark.
- * Testing of electrostatic properties in accordance to IEC 61340-5-1, Polymer Institute, Test Report P 4956-1-E, November 2007
- ** Testing of electrostatic properties in accordance to IEC 61340-5-1, SP Institute, Test Report F900355:B, February 2009
- Conforms to the requirements of ANSI/ESD S20.20 and IEC 61340-5-1. (Internal Test)
- Fire classification in accordance with EN 13501-1, Report-No. 2007-B-0181/18, MPA Dresden, Germany, May 2007.
- Particle emission certificate Sikafloor-235 ESD CSM Statement of Qualification - ISO 14644-1, class 4 - Report No. SI 0706-406 and GMP class A, Report No. SI1008-533.
- Outgassing emission certificate Sikafloor-235 ESD: CSM Statement of Qualification - ISO 14644-8, class -6.8 - Report No. SI 0706-406.
- Testing of Paint Compatibility in acc. to BMW-Standard 09-09-132-5, Polymer Institute, Test Report P 5541, August 2008
- Varnishability test according to Mercedes Benz-standard PBODC380/PBVCE380 (paint wetting impairment substances (PWIS)) like silicones, Test Report VPT-Nr. 07LL165, 04.2008.
- Spark resistance in accordance with UFGS-09 97 23 of coating systems, Test report P 8625-E, Kiwa Polymer Institut
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Chemical Base
EP
Shelf Life
12 months from date of production.
Storage Conditions
The product has to be stored in closed, sealed and undamaged packaging in dry conditions at temperatures between +5°C and +30°C. The packaging must be protected from direct sunlight.
Density
Part A | ~ 1.69 kg/l |
Part B | ~ 1.03 kg/l |
Mixed Resin | ~ 1.49 kg/l |
Shore D Hardness
~58 (resin filled) (7 days / +23 °C) | (DIN 53 505) |
Abrasion Resistance
~ 60 mg (CS 10/1000/1000) (28 days / +23 °C) | (DIN 53109 Taber Abraser Test) |
Compressive Strength
Resin: (filled) ~ 44 N/mm² (28 days / +23 °C) | (EN 196-1) |
Tensile Strength in Flexure
Resin: (filled) ~ 20 N/mm² (28 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 for detailed information.
Thermal Resistance
Exposure* | Dry heat |
Permanent | +50 °C |
Short-term max. 7 d | +80 °C |
Electrostatic Behaviour
Resistance to ground1) | Rg < 109 Ω |
Typical average resistance to ground2) | Rg < 106 Ω |
Body voltage generation2) System Resistance (Person/Floor/Shoe)3) | < 100 V < 35 M Ω |
1) In accordance with IEC 61340-5-1 and ANSI/ESD S20.20. |
Application
Mixing Ratio
Part A : part B = 78:22 (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
Temperature | Time |
+10 °C | ~ 40 minutes |
| +20 °C | ~ 25 minutes |
+30 °C | ~ 15 minutes |
Applied Product Ready for Use
| Temp. | Foot traffic | Light traffic | Full cure |
+10 °C | ~ 4 days | ~ 8 days | ~ 10 days |
| +20 °C | ~ 3 days | ~ 6 days | ~ 7 days |
| +30 °C | ~ 2 day | ~ 5 days | ~ 6 days |
Consumption
Coating System | Product | Consumption |
| Self-smoothing wearing course (Film thickness ~ 1.5 mm) | 1 pbw Sikafloor®-235 ESD filled with quartz sand F34 | Maximum 2.5 kg/m² Binder + quartz sand F34 Depending on the temperature the filling grade varies from: 1 : 0.1 pbw (2.3 + 0.2 kg/m²) to 1 : 0.3 pbw (1.9 + 0.6 kg/m² |
| Textured coating (Film thickness ~ 0.5 mm) | Sikafloor®-235 ESD | 0.7 - 0.8 kg/m² |
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
For detailed info, please refer to the system related System Data Sheets.
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 F34 (0.1-0.3 mm) or Sikafloor® Filler 1 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 reduce air entrainment.
Mixing Tools
Sikafloor®-235 ESD must be thoroughly mixed using a low speed electric stirrer (300 - 400 rpm) or other suitable equipment.
APPLICATION
Wearing course smooth:
Sikafloor®-235 ESD 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 textured:
Sikafloor®-235 ESD (+ Thinner C & Extender T) is applied with a serrated trowel e.g. Trowel No. 999 or Adhesive Spreader No.777, Toothed blades No. 23 = A3’(www.polyplan.com) and then back-rolled (crosswise) with a textured roller.
CLEANING OF TOOLS
Clean all tools with Thinner C immediately after use. Hardened and/or cured material can only be mechanically removed.