Technical details
System Description
RPC AM (2K) is a two-component polyurethane aliphatic mastic.
Component A is a mixture of polyesters, fillers, catalysts and other functional additives.
Component B - aliphatic isocyanate-based hardener.
Scope of application
RPC AM (2K) is used as a finishing light-protective layer, laid on top of waterproofing materials that are not resistant to ultraviolet radiation (aromatic polyureas, aromatic polyurethane mastics).
Physical and chemical indicators "RPC AM (2K)"
|
Indicator |
Component A |
Component B |
|
Density at 20 °C |
Окрашенная вязкая жидкость | Однородная прозрачная низковязкая бесцветная жидкость |
|
Dynamic viscosity at a temperature of 25 °C mPa•s within |
7000 — 9000 | 200 — 300 |
|
Density, g/cm3C |
1,20-1,40 | 1,05-1,10 |
|
Solid residues, % |
100 | 74 — 76 |
|
Mass fraction of NCO - groups, % |
— | 16-17 |
Physical and mechanical indicators "RPC AM (2K)"
|
Parameters |
Value |
|
Relative elongation at break, % |
150 — 250 |
|
Breaking strength, MPa |
3-4 |
|
Abrasion by the Taber method, mg/1000 rotations |
50 — 60 |
|
Shore A hardness, c. u. |
55 — 65 |
|
Adhesion to polymer coatings, MPa |
2-3 |
Conditions for applying mastic
- Temperature of mastic components, polymer coating surface and ambient air in the work area: + 5 °C to + 30 °C.
- Relative air humidity: not more than 80%.
- The surface temperature of the polymer coating must be at least 3 °C above the dew point determined for the given conditions, both during the application of the mastic and during the entire time required for the complete cure.
Application method
- Apply RPC AM (2K) aliphatic polyurethane mastic only after the main layer of the polymer coating (aromatic polyurea or mastic) has completely cured.
- Stir component A for 5 minutes with a low-speed (no more than 200 rpm) mixer, for example, a drill with a mixing attachment.
- If necessary, to reduce the viscosity, dilute component A with toluene or xylene not more than 10% by weight. It is unacceptable to use solvents containing alcohols or more than 0.1% water.
- The working temperature of the mastic before application is from + 10 °C to +30 °C.
- Pour the contents of the container with component B into the container with component A. For partial use, use the ratio A:B - 100:50 by weight.
- Stir the mixture of components for 2 minutes until a homogeneous liquid. Pay particular attention to mixing at the bottom and on the sides of the bucket. The pot life of the working mixture in a container (A+B) at 25 °C is 15-20 minutes. After mixing the components, you must immediately start applying the mastic.
- Pour the mastic onto the surface in strips or puddles. Then spread it evenly with a nylon roller, brush, putty knife or rubber scraper, 0.3 to 0.5 millimeters thick. With a thickness of 0.3 - 0.5 mm, the consumption will be 0.4 - 0.6 kg per square meter.
Precautions and health effects
When processing, it is necessary to take into account safety measures according to TU.
Shelf life
Shelf life of waterproofing mastic is 6 months without opening the container.
Rights
The data provided in this technical information is based on our current technical knowledge and experience and is believed to be accurate at the time of publication. Nothing in this publication should be construed as a warranty, either expressed or implied. Due to the abundance of factors that can influence the recycling and use of our materials, they do not excuse the recycler from its own testing and experimentation. In all circumstances, it is the user's responsibility to correctly determine the applicability of such information or of the product itself for a specific purpose of the user.