Sika® Ucrete® MF 40 AS
(former Ucrete® MF 40 AS)
Antistatic, smooth heavy-duty polyurethane flooring screed
Sika® Ucrete® MF 40 AS is a heavy-duty resin floor which provides a smooth protective antistatic floor finish suitable for applications in predominantly dry ESD and ECF environments.
- Expert installation by fully trained and licensed applicators
- Resistant to bacterial or mould growth
- Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
- Electrostatically conductive
- Very good resistance to specific chemicals
- Very good mechanical resistance
- Impermeable to liquids
- Non-tainting after curing
- Odourless
- Thermal expansion properties similar to concrete
- Tolerant to substrates with high moisture content
Usage
Sika® Ucrete® MF 40 AS is used in the electronics industry to protect sensitive electronic devices and in explosion hazarded areas. Sika® Ucrete® MF 40 AS is used within dry process areas including the following application areas:- Food and beverage facilities
- Pharmaceutical facilities
- Chemical and processing facilities
- Clean rooms
- Electronic facilities and data centres
- Defence estates
- The Product may only be used by experienced professionals.
Advantages
- Expert installation by fully trained and licensed applicators
- Resistant to bacterial or mould growth
- Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
- Electrostatically conductive
- Very good resistance to specific chemicals
- Very good mechanical resistance
- Impermeable to liquids
- Non-tainting after curing
- Odourless
- Thermal expansion properties similar to concrete
- Tolerant to substrates with high moisture content
Packaging
Refer to the current price list for available packaging variations.
Colour
Cured colour | Red, Orange, Yellow, Bright Yellow, Cream, Grey, Light Grey, Green, Light Green, Green/ Brown, Blue. |
Product Details
APPROVALS / STANDARDS
Food and Beverage Facilities Suitability, Sika® Ucrete®, HACCP, Test Report No. I-PE-769-SA-2-RG-06b
Halal Certification Europe (HCE), Sika® Ucrete®, WHFC, Certificate No. 21453-2/1/1/Y1
Indoor Air Comfort Gold EN 16516, Sika® Ucrete®, eurofins, Certificate No. IACG-321-01-01-2023
Chemical Base
Water-based polyurethane cement hybrid
Shelf Life
Always refer to the best-before date of the individual packaging.
Storage Conditions
The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to the packaging.
Refer to the current Safety Data Sheet for information on safe handling and storage.
Density
Mixed Product | ~1.97 kg/l |
System Structure
| Layer | Product | |
| 1. | Primer | Sika® Ucrete® PLC |
| 2. | Earthing connection | Copper tape |
| 3. | Wearing layer | Sika® Ucrete® MF 40 AS |
Compressive Strength
Cured 28 days at +23 °C | 50 N/mm² |
Modulus of Elasticity in Compression
4000 MPa | (EN 12447) |
Flexural Strength
Cured 28 days at +23 °C | 20 N/mm² |
Tensile Strength
Cured for 28 days at +20 °C | 9 MPa |
Tensile adhesion strength
> 2.0 N/mm² (concrete failure) | (EN 1542) |
Coefficient of Thermal Expansion
3.6 × 10-5 °C-1 | (ASTM C531) |
Skid / Slip Resistance
PTV, slider 96 | 35 wet conditions |
Class | R 10 |
Electrostatic Behaviour
Resistance to ground | RG< 1 × 106 Ω |
Resistance to ground | RG < 109 Ω |
Body voltage generation | < 100 V |
Resistance of person to earth | < 35 MΩ |
Note: Measurement results can be affected by ESD clothing, ambient conditions, measurement equipment, cleanliness of the floor and the test personnel.
Service Temperature
Maximum | +70 °C |
Minimum | -15 °C |
Water permeability
Sika® Ucrete® MF 40 AS exhibits zero absorption when tested to CP.BM2/67/2.
Chemical Resistance
Laboratory-defined resistance to many individual chemicals. Before proceeding, contact Sika Technical Service for specific information.
Reaction to Fire
| Class Bfl-s1 | (EN 13501-1) |
Application
Layer Thickness
~4–6 mm
Product Temperature
Maximum | +25 °C |
Minimum | +18 °C |
Ambient Air Temperature
Maximum | +35 °C |
Minimum | +18 °C |
Substrate Temperature
Maximum | +30 °C |
Minimum | +18 °C |
Curing Time
| Substrate temperature | Return to traffic |
| +18 °C | < 24 hours |
| +15 °C | 4 hours (with Sika® Ucrete® Accelerator) |
Note: Times are approximate and will be affected by changing ambient and substrate conditions.
Consumption
Layer | Product | Consumption |
Primer | Sika® Ucrete® PLC | 2–3 kg/m2 |
Earthing connection | Copper tape | Maximum distance 10 m between strips |
Wearing layer | Sika® Ucrete® MF 40 AS | 8–10 kg/m2 for 4 mm 12–14 kg/m2 for 6 mm |
SUBSTRATE PREPARATION
IMPORTANT
Reduced service life due to incorrect treatment of cracks
The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.
- For static cracks, ensure the width is suitable for overcoating with Sika® Ucrete® MF 40 AS.
- For dynamic cracks, ensure the movement is within the movement capacity of Sika® Ucrete® MF 40 AS.
TREATMENT OF JOINTS AND CRACKS
Construction joints and existing static surface cracks in substrate require pre-treating before full layer application. Use Sikadur® or Sikafloor® resins.
The System can be applied on green or damp concrete with no standing water. Allow for at least 3 days for early concrete shrinkage to occur to prevent shrinkage cracks from appearing on the wearing surface.
Cementitious substrates must be structurally sound and of sufficient compressive strength (minimum 30 N/mm2) with a minimum tensile strength of 1.5 N/mm2.
Substrates must be clean, dry and free of contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.
APPLICATION
Application must be undertaken by a fully trained and licensed Sika® Ucrete® applicator.