Three component cementitious Polyurethane screed
Polycrete® MD is a waterborne, three component cementitious polyurethane screed.
Fields of application
To provide a medium to heavy duty floor finish with high temperature and chemical resistance. Typical uses are dry process areas with heavy traffic and impact and chemical exposure.
Features and benefits
- Wear Resistant floor coating
- Chemical resistant floors
- High temperature resistant.
- Seamless and hygienic finish
- Low maintenance cost
- Easy process
- Excellent bond to substrate
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.
The substrate should be primed with a primer such as Epofloor® TBR prior to application.
The tensile strength of the substrate should exceed 1.5MPa. The residual moisture content should be less than 4%.
Polycrete® MD 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).
Polycrete® MD 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® MD is applied by Squeegee and subsequently spike rolled.
POLYCRETE® MD Typically 6 - 12 kg/m2 depending on build thickness.
Tools must be cleaned immediately after use with Ulfcar® Tool Cleaner or other suitable solvent.
Polycrete® MD is supplied in 17 kg set Consisting of 2,5 kg Polycrete MDR 2,5 kg Polycrete hardener and 12 kg MD-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
|Mixing Ratio A:B:C||2,5 kg :2,5 kg : 12 kg|
|Mixed density||2,0 kg/l|
|Mixed Viscosity@23°C||Brookfield DV-II||n.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
|SHORE D hardness||DIN 53505||85|
|Tensile strength||DIN 53504|
|Elongation at Break||DIN 53504||>100%|
|Crack bridging ability||1 mm|
|Temperature resistance||Max 90°C|
|Chemical Resistance||See separate datasheet|
|Adhesion to concrete||BS/EN 24614||>1,5 MPa|
|Abrasion resistance||EN 1504-2||<50 mg|
|Impact resistance||EN 1504-2||Class II|
|Fire classification||EN 1504-2||Efl|
|Surface Resistivity||EN 1081||> 106 Ohm|
|Volume Resistivity||EN 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.