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Polycrete® HF ECF


Conductive three component cementitious Polyurethane screed


Product description
Polycrete® HF ECF is a waterborne, three component cementitious polyurethane screed for conductive flooring.

Fields of application
Electrically conductive Floor coating for indoor use which are subjected to extremely heavy mechanical or high chemical charges. Typically in dairies, smokehouses, ovens and cold stores, and generally in the food stores, where steam cleaning is required.

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Features and benefits

  • Electrically conductive 104-106 Ω

  • Wear Resistant floor coating

  • Chemical resistant floors

  • High temperature resistant

  • Heavy duty applications

  • Easy process

  • Excellent bond to substrate.


Substrate preparation
All substrates must be structurally sound, clean and dry and free from oil, grease and loose material and any other contamination which might impair adhesion.

Polycrete HF ECF should be used in combination with conductive primers to obtain a conductive floor system.

The tensile strength of the substrate should exceed 1.5MPa. The residual moisture content should be less than 5%.

Polycrete® HF ECF should be applied when substrate temperatures are constant or falling to minimise the risk bubble and void formation due to expansion of air within the substrate when temperatures are rising. This is particularly important to note on external applications.

The curing reactions are influenced by the ambient, material and substrate temperatures. Low temperatures lengthen the pot life, open- and curing times. High temperatures shorten pot life, open- and curing times.

The temperatures should not fall below the minimum stated until the material is fully cured. The temperature of the substrate must be at least 3°C above the dew point both during the application and for at least a further 24 hours (at 15°C).

Application
Polycrete® HF ECF is supplied in prepacked units. Before mixing, precondition both A, B and C components to a temperature of approximately 15 to 20°C.

Pour the entire contents of part B into the container of part A. Mix with a low speed (ca.300 rpm) electric drill and paddle for at least 1 minute until homogeneous. Under stirring add component C and stir for another 2 minutes. Scrape the sides and the bottom of the container several times during mixing to ensure complete mixing. Keep the mixing head submerged to avoid entrapping air.

Do not work out of the original container. Decant the mixed material into a fresh container and remix for another minute.

Polycrete® HF ECF is applied by trowel and subsequently spike rolled.

Consumption
POLYCRETE® HF ECF Typically 13 - 20 kg/m2 depending on build thickness.

Cleaning agent
Tools must be cleaned immediately after use with Ulfcar® Tool Cleaner or other suitable solvent.

Packaging
Polycrete® HF ECF is supplied in 25 kg set Consisting of 2,5 kg Polecrete HFR, 2,5 kg Polycrete hardener and 20 kg HF ECF-filler.
Minimum 12 months stored in original containers under dry conditions at a temperature between 15-20°C. Do not expose to direct sunlight.


Technical data for Liquid material

PropertyMethodValues
Mixing Ratio A:B 2,5 kg :2,5 kg : 20 kg
Mixed density 2,15 kg/l
Mixed Viscosity@23°CBrookfield DV-IIn.a.
Working time@23°C 10 minutes
Ready for traffic@23°C 12 hours
Fully cured 23°C 7 days
Substrate temperature Min 5°C max 30°C
Max relative humidity Max 85 %

Technical data cured material

PropertyMethodValues
Thickness 6-12 mm
SHORE D hardnessDIN 5350585
Tensile strengthDIN 53504 
Elongation at BreakDIN 53504>100%
Crack bridging ability 1 mm
Temperature resistance Max 90°C
Water penetration Impervious
Chemical Resistance See separate datasheet
Adhesion to concreteBS/EN 24614>1,5 MPa
Abrasion resistanceEN 1504-2<50 mg
(Taber)  
Impact resistanceEN 1504-2Class II
Fire classificationEN 1504-2Bfl
Surface ResistivityEN 1081> 106 Ohm
Volume ResistivityEN 1081> 106 Ohm

This information and all further technical advice is based on our present knowledge and experience. However, it implies no liability or other legal responsibility on our part, including with regard to existing third party intellectual property rights, especially patent rights. In particular, no warranty, whether express or implied, or guarantee of product properties in the legal sense is intended or implied. We reserve the right to make any changes according to the technological progress or further developments. The customer is not released from the obligation to conduct carefull inspection and testing of incoming goods. Performance of the product described herein should be verified by testing, which should be carried out by only qualified experts in the sole responsibility of a customer. Please contact ULFCAR for the latest version. All our documents, offers, ect. are in association with our general sales, delivery and application conditions.

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