Product Data Sheet Show all documents

Sikafloor®-25 PurCem® ECF

Polyurethane hybrid flow applied heavy duty conductive smooth floor screed                  

Sikafloor-25 Purcem ECF is a 4-part polyurethane hybrid flow applied medium-heavy duty conductive water based coloured smooth matt self -smoothing floor screed finish. Thickness 6.0 mm. Internal use. Provides a seamless, chemical,impact,heat,abrasion resistant,easy cleanable, low maintenance surface in dry process areas

  • Good conductivity. Fulfils the conductivity requirements from ATEX 137
  • Seamless
  • Good chemical, abrasion, impact and thermal resistance
  • Easy application
  • Tolerant to substrates with high moisture content
  • Smooth, matt finish
  • Easy cleanability
  • Low maintenance
Product Data Sheet Show all documents

Usage

  • Chemical,explosive storage and handling areas
  • Chemical and pharmaceutical production plants
  • Food processing plants
  • In dry or wet process areas
  • Freezers and coolers
  • Thermal shock areas explosive dust environment
  • Workshops and laboratories.

Advantages

  • Good conductivity. Fulfils the conductivity requirements from ATEX 137
  • Seamless
  • Good chemical, abrasion, impact and thermal resistance
  • Easy application
  • Tolerant to substrates with high moisture content
  • Smooth, matt finish
  • Easy cleanability
  • Low maintenance

Packaging

Parts A + B + C + D

3 + 3 + 13 +0,012 = 19,012 kg  ready to mix unit

Part A

3 kg plastic container

Part B

3 kg plastic container

Part C

13 kg paper sack

Part D

0,012 kg small plastic bags

Colour

Part A

Coloured liquid.

Part B

Brown liquid

Part C

Grey powder

Part D

Black carbon fibres

Appearance of applied product: Smooth  matt finish

Standard colours: Beige, Oxide Red, Sky Blue, Grass Green, Pebble Grey, Light Grey, Dusty Grey, Agate Grey

Applied colours selected from colour charts will be approximate.

It is recommended that applied colour samples should be compared against colour chart colours under the same lighting conditions before final selection.

When 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 coating.

Product can be used outside provided discolouration is acceptable by the customer.

Product Details

Sustainability / Certifications / Approvals

ENVIRONMENTAL INFORMATION

Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings

 

APPROVALS / STANDARDS

  • CE Marking and Declaration of Performance to EN 13813 - Cementitious / resin screed material for use internally in buildings.
  • Impact resistance values tested at PRA Coatings Technology Centre, Hampton Middlesex, UK. Test report No. 75221-151b, dated April, 2012
  • Slip resistance properties according to DIN EN 51130 tested at Test Institute MPI, Test report No. 12 6637 - S / 12, August 2012
  • Classification of reaction to fire performance acc. EN 13501-1, tested at EXOVA Warrington fire, Warrington, UK. Test Report No. 318327, dated May 24th, 2012
  • Conforms to the requirements of: EN1186, EN 13130, prCEN/TS 14234 and the Decree on Consumer Goods, representing the conversion of directives 89/109/EEC, 90/128/EEC and 2002/72/EC for contact with food stuffs. Test report by ISEGA, 37970 U 141, June 2014
Product Information

Chemical Base

Water-based polyurethane cement hybrid

Shelf Life

Part A:

12 months from the date of production. Protect from freezing.

Part B:

12 months from the date of production. Protect from freezing.
Part C:6 months from the date of production. Protect against humidity.
Part D:24 months from the date of production. Protect against humidity.

Storage Conditions

Original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5 °C and +25 °C.Always refer to packaging.

Density

Mixed resin ( All parts)

1,89 kg/l ± 0,03

All Density values at +22 °C.

Product Declaration

 EN 13813 - Cementitious / resin screed material for use internally in buildings.Class CT - C50 - F15 - ARO.5 - IR 20
Technical Information

Shore D Hardness

~ 80

(DIN 53505)

Compressive Strength

~ 50 N/mm²

(DIN EN 13892-2)

Tensile Strength

~ 15 N/mm²

(DIN EN13892-2)

Tensile Adhesion Strength

>1,5 N/mm² (failure in concrete)

(ISO 4624)

Chemical Resistance

Sikafloor®-25 PurCem® ECF is resistant to many chemicals. Contact Sika Technical Service for specific information.

Thermal Resistance

The product (6 mm thickness) is suitable for use when exposed to continuous temperatures, wet or dry, of up to +90 °C. The minimum service temperature is -40 °C.

Electrostatic Behaviour

Typical average resistance to ground1)

105 - 108 Ohm

1) Readings may vary depending on ambient conditions (e.g. temperature, humidity) and measurement.

Application

Application Information

Mixing Ratio

Part A : B : C = 1 : 1 : 4.33 ( by weight) Part C includes fibres mixed from part D

Ambient Air Temperature

+15 °C min. / +30 °C max.

Layer Thickness

~ 6 mm (Scratch coat & Wearing finish)

Relative Air Humidity

80 % max.

Dew Point

Beware of condensation. The substrate and uncured floor must be at least 3 °C above the dew point to reduce the risk of condensation or blooming on the floor finish.

Substrate Temperature

+15 °C min. / +30 °C max.

Substrate Moisture Content

<6% pbw

Test method: Sika®-Tramex meter, CM-measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).Substrate visibly dry with no standing water.

Pot Life

Ambient Temperatures

Time

+15 °C

~45–50 min

+20 °C

~20–25 min

+30 °C~15–18 min

Curing Time

SubstrateTemperature

Minimum

Maximum

+15 °C

24 hours

72 hours

+20 °C

14 hours

48 hours
+30 °C12 hours24 hours

Ensure scratch coat layer is fully hardened and tack free before application Sikafloor®-25 PurCem® ECF

Times are approximate and will be affected be changing ambient and substrate conditions, particularly temperature and relative humidity.
Consumption

Consumption

~ 1,89 kg/m²/mm
Application steps

MIXING

Prior to mixing all parts, mix separately part A using a low speed single paddle electric stirrer (300 - 400 rpm)to mix liquid and all the coloured pigment until a uniform colour has been achieved. Add part B to part A and mix part A + B continuously for 30 seconds until a uniform coloured mix has been achieved. When parts A and B have been mixed. Using a pan type revolving or forced action mixer (free fall mixers must not be used).Gradually add part C (aggregate/sand) over a period of 30 seconds. To avoid lumps in mix, don’t dump Part C into parts A + B. Add part D and mix for a further 3 minutes until a smooth consistent mix has been achieved. Over mixing must be avoided to minimise air entrainment. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing. Mix full units only. Mixing time for A+B+C+D = 4 minutes

Note: The carbon fibres (part D) must be added to parts A+B+C immediately after adding part C. Allow parts C+D to mix according to the above mentioned mixing time for all parts to ensure complete distribution of the conductive carbon fibres.

APPLICATION

Refer to the Sikafloor®-25 PurCem® ECF Method Statement

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.

CLEANING

Refer to the “Sikafloor®- CLEANING REGIME”.

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