
Master Top TC 442 W | Polyurethane floors
Industrial polyurethane flooring
Two-component colored or transparent water-based hard polyurethane matt lacquer, resistant to light and UV radiation
Polyurethane garage floors
Warehouse polyurethane floors
Application of polyurethane coatings
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Master Top TC 442 W | Two-component, water-based polyurethane top coat, tinted or clear.
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Used as a final protective layer in epoxy and rigid polyurethane floor coverings such as MasterTop 1273 and MasterTop 1324.
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It has a matte finish and is UV resistant.
- Complies with EN 13813.
Areas of use
Used as a top coat in epoxy (MasterTop 1273) and semi-rigid polyurethane (MasterTop 1324) floor systems to provide UV protection and improve wear resistance.
Properties and benefits of polyurethane varnish for all floors
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It has high abrasion resistance and increases the scratch resistance of coatings.
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Good chemical resistance to fuels and lubricants, non-concentrated acids, salts and alkalis.
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Visually hides minor defects in the evenness of the coating and traces of operational wear.
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Resistant to light and UV radiation.
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Has high technology.
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Provides ease of cleaning and cleaning of a covering.
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Does not contain volatile organic substances (complies with the AgBB standard).
- It does not have an unpleasant odor when applied.
Scope of application
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Polyurethane floors for the garage.
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Polyurethane floors for food production.
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Warehouse polyurethane floors.
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Polyurethane flooring for pavement.
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Polyurethane floors for a bakery.
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Polyurethane floors for industrial premises.
- Polyurethane floors for exploited roofs.
Specifications
Mixing ratios by weight |
4:1
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Dry residue transparent |
43%
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pigmented |
47%
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Density g/cm3 at 20°C |
Transparent: A-1.05; B-1.13 Pigmented: A-1.14; B-1.13 |
Viscosity mPa*s at 20°C |
Component A: 170-450 Component B: 1300 |
Pot life (minutes) 20°C |
45
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Reapplication interval, (hours) min-max 20°С |
16-24h |
Full curing, (days) 23°C |
5
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Air and base temperature |
Min 10°C, max 30°C.
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Appearance |
Matte, slightly textured surface
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Foundation Requirements
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MasterTop TC 442 W material is used as a finishing layer in various rigid MasterTop polymer floor coating systems.
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The most common types are new or old epoxy and rigid polyurethane coatings.
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It is not desirable to use it as a finishing layer on elastic coatings.
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In such cases, it is recommended to use a material ( MasterTop TC 417W or another, as recommended by BASF specialists).
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Substrate requirements are described in more detail in the technical data sheets for primers.
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It is also necessary to study the technical specifications for the base layer materials used in conjunction with this composition - this is very important for planning the installation of the MasterTop flooring system.
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In the process of installing a new polymer coating, it is necessary to carefully observe the interlayer intervals between the various layers.
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The maximum and minimum overcoat intervals between a coat of MasterTop TC 442W and the previous coat are given in the technical data sheets for the respective materials.
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On new polymer coatings, subject to the correct interlayer intervals, the varnish is applied without prior mechanical preparation.
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If the interlayer interval is exceeded, it is necessary to carry out mechanical surface treatment.
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The use of this material on old coatings, without prior mechanical surface preparation, is unacceptable.
Foundation preparation
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The most optimal preparation method is light grinding with diamond abrasive elements.
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The parameters of abrasive elements (for example, grain size) and the intensity of processing depend on the type and condition of the coating, its design, existing defects and expected operational impacts.
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Before applying MasterTop TC 442W, a properly prepared, mechanically treated coating should have a matt, sometimes slightly whitish surface.
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The surface must not be sticky or greasy.
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There should be no chips, deep scratches, or visually visible pores on the surface.
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The presence of contaminants, such as: traces of fuels and lubricants, various oils, fats, various finishing materials, dust, etc., is unacceptable.
- For more detailed information on this section, please contact your local BASF, FLOORTOP representatives.
Application conditions
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The temperature of the base during the application of the material should be from +10°С to +30°С.
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It must be remembered that sometimes the temperature of the base can be lower than the air temperature by 3-4°C.
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It is highly undesirable, within the same working area, to have areas with a large difference in base temperature.
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This can be caused by various factors, such as sunlight, various equipment in the room, temperature processes in adjacent rooms, etc.
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The base temperature is most easily measured with a pyrometer (non-contact infrared thermometer).
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The substrate temperature must be 3ºC above the dew point.
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The "dew point" is the air temperature at which condensation forms in a room.
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It depends on the humidity in the room and is determined according to the calculation table.
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The air temperature at the construction site should be between +10°С and +30°С.
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The presence of drafts is highly undesirable - this can lead to surface defects: bubbles, ripples, shagreen, sticky areas.
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Humidity at the facility should be at least 30% and not more than 80%.
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Humidity and air temperature are most conveniently measured using a thermohygrometer.
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The temperature of the material components should be around +20°C.
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At a high temperature on the object, it is desirable to have a material temperature of about +15°C, and at a low temperature on the object, on the contrary, it is desirable to have a material temperature of about +25°C.
- The temperature of the material and base, humidity and air temperature directly affect such material properties as viscosity (fluidity), pot life, polymerization time, surface appearance and the presence/absence of various defects.
Material preparation
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MasterTop TC 442W consists of two components: "A" - polyurethane resin (8 kg) and "B" - hardener (2 kg), which are in a carefully selected ratio.
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If it is necessary to partially use the kit, the mass ratio of the components must be strictly observed (before weighing, the components must be mixed independently of each other).
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If this rule is not observed, an oily film may appear on the surface, residual stickiness or loss of the physical and mechanical properties of the layer.
Material preparation sequence
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Open containers with components and thoroughly mix component "A" (resin) in the original packaging, using a low-speed mixer with a spiral attachment of the "Helical" type (300 - 400 rpm);
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Completely pour component "B" (hardener) into the container of component "A" (resin) and mix thoroughly for 2-3 minutes until a homogeneous material consistency is obtained.
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In this case, the areas adjacent to the bottom and to the edges of the mixing tank should be captured;
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Pour the material into a second, clean container and mix again for 1-2 minutes.
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Do not add water or solvent to the formulation!
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When mixing the components, the mixer nozzle should not rise much above the level of the material, so as not to involve excess air in the composition.
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The chemical reaction between components "A" and "B" is exothermic, that is, it occurs with the release of heat, which reduces the lifetime of the composition, so the volume of the mixed material must be linked to the number of stackers, the speed and method of application, and the temperature at the object.
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Each minute of the presence of a mixed set of material ("A" + "B") in a large volume (in a bucket) reduces the lifetime and, consequently, the processing time of the material.
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Try to knead such an amount of the composition that the production time for one batch is about 15 - 20 minutes.
Material application
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The application of the material is carried out by the “painting” method using a microfiber roller.
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In some cases (for example, as a sealing layer on a rough surface), it is advisable to apply the composition using a roller with a synthetic bristle of 8-12 mm.
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The maximum allowable width of the roller is 40cm.
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It is necessary to carefully observe the indicated consumption of material, since at low consumption, various surface defects, such as shagreen, may appear.
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Rolling and distribution of the composition by a roller, as a rule, is carried out in one direction from edge to edge, with a strip 1 roller wide with a slight overlap, as well as additional rolling of the joints of two adjacent strips.
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Do not roll "criss-cross".
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The application of the material should be started from the wall opposite the exit.
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In rooms with complex geometry, we recommend that you think over the schedule and work plan for pouring in advance.
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When applying the composition, it is necessary to monitor the development time of the kit and the thickness of the layer.
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If the production time of one set will be very different from the production time of the next or there will be a large difference in thickness, a visual difference and a different degree of matte effect at the junctions of the working "captures" are possible.
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The maximum turnaround time for a kit also depends on the temperature and humidity at the site.
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When covering a large area, try to varnish the entire surface at a time without interrupting the application.
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If this is not possible, the joining of the lacquer layer in areas performed on different days must be planned in the most inconspicuous place.
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Dip the roller into the mixed material and roll the strip parallel to the wall to one of the corners.
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Dip the roller into the material again and apply the next strip parallel to the previous one with an overlap of a few centimeters.
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With the second roller, roll the applied material in the opposite direction from corner to corner without stopping.
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Move the roller 10-20cm and roll again without stopping.
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Always roll in the same direction. Do not roll back and forth and crosswise.
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When almost all of the laid material has been rolled in reverse, apply 2 more strips and roll in the reverse direction as previously described.
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When using this technique, the interval for joining the layers should not exceed 1-4 minutes.
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In this way it is possible to minimize the visibility of roller marks on the surface.
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Depending on the method of application and consumption, the surface may have a slightly visible texture, which does not affect the properties of the coating.
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The interlayer interval at a temperature of +20°C should be no more than 24 hours.
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The next layers must be applied no earlier than the previous layer reaches the “tack-free” state, i.e. does not stick to fingers when touched.
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The minimum and maximum interlayer interval can be more or less than the specified one and directly depends on the temperature at the object.
Consumption
Material consumption depends on the texture of the base.
Estimated material consumption is as follows:
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for a transparent coating 0.1-0.15 kg/m2 per 1 layer;
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for pigmented coating 0.08-0.1 kg/m2 per 1 layer;
- it is recommended to apply the coating in two layers.
Precautionary measures
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During installation, the ambient temperature should be between +10 ºС and +30 ºС.
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Relative air humidity during laying should not exceed 80%.
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Under the concrete slab on which the MasterTop coating is laid, a working waterproofing is required.
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The product must be applied by qualified installers.
- For application in cold conditions, warm up the material and fillers in advance (1-2 days in advance).
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The strength class of the board/screed for applying MasterTop must be at least C25.
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The terms of work and hardening of systems based on resins depend on the temperature of the environment and the surface, the relative humidity of the air.
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At low temperatures, the reaction slows down, which prolongs the working time with the mixture and the setting time.
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High temperatures speed up the reaction, which reduces the working time with the mixture and the setting time.
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For complete curing of the material, the ambient and surface temperatures must not fall below the specified minimum limits.
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Avoid contact with water for 24 hours after installation.
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If this happens, the contacted coating should be completely replaced.
- Observe the ratio of components, do not add solvent.
Cleaning tools
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After completion of work, the tools are cleaned with an organic solvent.
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Cured material can be removed mechanically or with an appropriate solvent.
Ecology/waste management
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The components of the material in the liquid state are hazardous to water and aquatic organisms.
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Do not allow to enter sewers, watercourses and soil.
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When cured, MasterTop TC 442 W is not dangerous.
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Dispose of in accordance with local regulations.
Package
- The material is supplied in metal pails.
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Component A - 8 kg.
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Component B - 2 kg.
- The weight of the set is 10 kg.
Storage
The material must be stored in its original packaging in a cool, dry place (at a temperature of +5°C +25°C.
Best before date
Under appropriate storage conditions - 12 months from the date of manufacture.
Security measures
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Do not approach storage areas during a fire.
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Store products in well ventilated areas.
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During work, work clothes, protective gloves, goggles and a mask should be used in accordance with health and safety regulations.
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Since uncured materials have an irritating effect, the components should not be allowed to come into contact with the skin and eyes, and in case of contact, rinse with plenty of water.
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If swallowed, seek medical attention immediately.
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It is forbidden to bring food and drink to the construction site where the product is being used.
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The product must be kept out of the reach of children.