Application of polyurethane coating Ceresit CF 72

Application of polyurethane coatings 

Polyurethane coating

The install of polymer floors

Polyurethane floors

 

Real Project

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Project

  • Ukraine, Kyiv region.

  • Shopping room.

  • Base: concrete floor.

A task

For a retail space in a construction hypermarket, it is required to apply a wear-resistant and decorative polymer coating.

Solution

The customer decided to apply the TM Henkel Ceresit CF 72 polyurethane coating system, 2 mm thick.

 

 

Stages of work

  • Mechanical preparation of the base, using grinding equipment.

  • Surface dusting.

  • Applying a primer.

  • Application of a base layer with a thickness of 2 mm.

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Advantages of Ceresit CF 72 polyurethane coating

  • Ceresit CF 72 is a polyurethane, self-levelling industrial floor coating.

  • Two-component self-levelling mortar, based on hard-elastic polyurethane resins, free of volatile solvents, for the installation of colored polymer floor coverings for concrete.

 Нанесение полиуретанового покрытия Ceresit CF 72

Polymer floors for the trading floor

Properties of polyurethane flooring Ceresit CF 72

  • Hard-elastic coating, with high resistance to compressive and tensile loads.

  • Resistant to high abrasion loads, including during traffic on rubber tires.

  • The ability to bridge cracks in the base, up to 0.9 mm wide.

  • Polyurethane coating, forms a smooth surface, spreads well.

  • Perhaps the device, both smooth and non-slip, rough surface, after sprinkling burnt sand.

  • It does not contain volatile organic solvents, has no unpleasant odor, is technologically advanced and easy to use.

  • Polyurethane coating impervious to liquids.

  • Polyurethane floor covering with high mechanical and chemical resistance.

 Нанесение полиуретанового покрытия Ceresit CF 72

Polyurethane floors

Scope of bulk polyurethane coating

  • Indoors with normal and high humidity.

  • As a smooth, crack-bridging coating for industrial floors in production and storage areas, offices, etc.

  • As a rough coating (covered with quartz sand) with increased resistance to cracking for loading and unloading areas, parking lots, industrial premises of the food industry and agriculture.

  • As a repair mortar for flooring.

 Нанесение полиуретанового покрытия Ceresit CF 72

Application of polyurethane coating

Foundation preparation

Substrate preparation is carried out in accordance with DSTU-N B A.3.1-23:2013, DSTU-N B V.2.6-212:2016 and

DSTU ISO 8504.

  • The base surface must be clean, solid and even.

  • All weak areas must be removed, cracks and cavities repaired with Ceresit materials.

  • It is necessary to clean the surface from dirt, dust, grease and other contaminants that may interfere with the adhesion of the material to the substrate.

  • Mechanical, sandblasting or shotblasting of a surface is recommended.

  • Permissible surface cleaning by hand or power tool.

  • After surface preparation, the compressive strength of the concrete base should not be lower than 20 MPa, and the residual moisture content should not be more than 4%.

  • Ceresit CF 72 is applied to the prepared and previously prepared substrate.

  • As a primer, Ceresit CF 71 is used.

  • The use of primers during surface preparation is mandatory.

 Нанесение полиуретанового покрытия Ceresit CF 72

Application of polymer floors

Execution of work on the application of polyurethane coating 2 mm

  • Before mixing, component A is mixed in a separate container, using a low-speed (up to 400 rpm) mixer, with a spiral nozzle, until a uniform color is obtained.

  • To prepare the working mixture, the contents of the container with component B are completely poured into the container with component A and mixed with a low-speed mixer, with a spiral nozzle, until a homogeneous and homogeneous mixture is obtained.

  • When mixing component A and preparing the working mixture, avoid excessive air intake and ensure that the spiral nozzle is completely immersed in the mixture.

  • The primed surface of the base must have the appearance of wet concrete, without whitish or matte spots, and have a clearly visible homogeneous polymer film.

  • The prepared working mixture is poured from a bucket onto a primed base and evenly distributed on the surface with a notched trowel or aluminum squeegee, with a set gap to obtain a coating layer of the required thickness.

  • Cover device should start from the wall opposite to the exit.

  • 10–15 minutes after spreading, the working mixture layer must be processed along and across with a spiked deaeration roller to remove air bubbles and finally level the coating layer.

  • To move on a fresh polymer coating, use special shoes (with spikes on the sole).

  • To obtain a non-slip, rough coating, after passing with a spiked roller, on a freshly laid layer of polyurethane coating, the surface is backfilled with cleaned dry quartz sand, fraction 0–0.63 mm, with a consumption of 0.6–1 kg/m2, with a uniform division by surfaces.

  • If necessary, quartz sand can be added to the pre-mixed mixture, with constant stirring and control of the homogeneity and absence of separation of the mixture.

  • After sanding, walking on the surface of the laid coating is prohibited.

  • The process of powdering and joining the coating fragments, in case of application over large areas, must be completed within 15 minutes at a temperature of +23 °C after the preparation of the mixture.

 Нанесение полиуретанового покрытия Ceresit CF 72

Ceresit CF 72

Technical description Ceresit CF 72

  • Self-levelling polyurethane coating for industrial floors.

  • Two-component self-levelling compound based on hard-elastic polyurethane resins, free of volatile solvents.

  • For the device of color polymeric floor coverings.

  • After the device of a polymeric covering, it needs to be protected from influence of the sun, wind, draft.

  • Water for at least 24 hours at +23°C.

  • If it is necessary to apply a second coating layer, the interlayer time interval should not exceed 48 hours at a temperature of +23 °C.

  • The application of the second layer can be carried out after the first one has cured, in the absence of sticking, approximately 5 hours after its application at a temperature of +23 °C.

  • The minimum and maximum interlayer intervals directly depend on the air humidity temperature at the facility.

  • In case of going beyond the maximum interlayer interval, mechanical processing (grinding) of the initial layer is required.

  • Important! The prepared mixture must be used within 20 minutes at a temperature of +20 °C.

  • The temperature of the base and components A and B, during the work, must be in the range from +15 °C to +30 °C. Avoid condensation!

  • The temperature of the substrate must be 3°C above the dew point to prevent condensation or discolouration of the surface.

  • Humidity should not exceed 75%.

  • The color of the coating is coordinated according to the RAL catalog.

  • Remains of uncured material and spilled material can be cleaned with a cloth, washed with an organic solvent.

  • Cured material can only be removed mechanically.

  • The exact material consumption is determined directly at the facility. It is necessary to strictly observe the proportion when mixing the components.

Note

  • Ceresit CF 72 is a polyurethane-based polymer material.

  • Protect eyes and skin, wash hands thoroughly after finishing work, provide ventilation in the room.

  • In case of contact with eyes, rinse with water and seek medical advice.

Storage

In branded sealed packaging in dry conditions at temperatures from +5 °С to +30 °С - no more than 12 months from the production date indicated on the package.

Disposal

Dispose of product residues and empty containers as construction waste.

Package

  • Ceresit CF 72 is supplied in sets of 13.22 kg.

  • Component A: 10 l plastic bucket weighing 10.5 kg.

  • Component: plastic bucket with a volume of 3 liters, weighing 2.72 kg.

Specifications

Compound

 

 

Component A

Pigmented polyurethane resin

 

Component B

Hardener

 

Mass ratio of parts

 

Component A

10.5 kg

 

Component B

2.72 kg

 

Coating appearance

Glossy uniform surface in specified color (RAL)

Density at +20 °C:

 

1.5 g/cm3

 

Component A

1.5-1.6 g/cm3

 

Component B

1.2 g/cm3

 

Time of use of the working mixture at +20 ° С

20 minutes

Mass fraction of non-volatile substances in the mixture

99.8%

 

Recommended coating thickness

1.5–2.5 mm.

 

Adhesion:

 

 

To metal

8 MPa

 

To concrete

not less than 2 MPa

 

Mixture consumption

2–3.5 kg/m2

 

Curing time at +20 °C

 

 

Before sticking

5 o'clock

 

To the action of light transport loads

72 hours

 

Fully resistant to mechanical and chemical loads

7 nights

Shore D hardness (after 28 days)

65

 

Relative elongation after rupture

15–20%

 

Erasing after Taber (after 28 days)

88 m2

 

 "Use effective polyurethane coatings when installing resin floors"

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