Technical details
System Description
A two-component system for applying a polyurea coating by spraying the "RPC ARP (ST)" brand.
The polyol component (component A) of the "RPC ARP (ST) (A)" trademark contains polyether amines, a catalyst, and pigment pastes.
The isocyanate component (component B) is a diphenylmethane diisocyanate prepolymer.
Scope of application
RPC ARP (ST) is used for application of seamless waterproofing and protective polyurea coatings by spraying on roofs, foundations, floors, various structures, etc.
Physicochemical indicators of components A and B
|
Polyol component (RPC ARP ST) (A)) |
Isocyanate component (Component B) |
|
|
Density at 20 °C |
0.96-1.05 g/cm3 |
0.95-1.1 g/cm3 |
| Viscosity at 20 °C |
250 - 450 mPa·s |
700 - 900 mPa·s |
| Warranty storage period: |
12 months |
|
Physical and mechanical parameters of polyurea with a layer thickness of 2 mm
|
Parameters |
Value |
|
Tensile strength, MPa |
9 — 11 |
|
Relative elongation, % |
350 — 450 |
|
Residual elongation, mm |
35 — 45 |
|
Shore A hardness |
80 — 90 |
|
Water absorption within 24 hours, wt.%, not more than |
2 |
Preparatory measures before starting work and recommendations for application
- Heat component A to +40 - 45 °C;
- Heat component B to +45 - +50 °C;
- Stir component A with a paddle mixer for 30 minutes at 500 - 1000 rpm;
- The isocyanate component (component B) must be stored at a temperature not lower than + 15 °C. If the isocyanate component has been stored at temperatures below +15 °C, then it should be slowly warmed up to a temperature of +60 °C and stirred for 30 minutes;
- Ambient temperature during application is not lower than + 5 °C;
- To obtain a high-quality polyurea coating, it is necessary to prepare the surface. The surface must be dry, degreased, free from dirt and dust, and comply with the applicable building and technical standards. If polyurea is sprayed on concrete or metal surfaces, it is necessary to use a polyurethane primer of the RPC Primer PU-ARP (1K) brand;
- Apply the components with high pressure units. Set the operating pressure to 160-220 atmospheres and adjust if necessary if the flame does not open properly;
- The recommended layer thickness in one pass is not more than 1 mm. The total thickness of the coating must be at least 2 mm;
- To protect polyurea from destruction under the influence of UV rays, it is necessary to use a 2-component aliphatic mastic of the RPC AM (2K) brand. A layer of mastic with a thickness of at least 0.3 mm.
Precautions and health effects
When processing, it is necessary to take into account safety measures according to TU.
Actual component consumption per 1 sq. m.
|
Temperature, °C |
Layer thickness, mm |
Component consumption, kg |
| +20 — +30 | 2 | 2,2 |
Shelf life
The shelf life of components A and B is 6 months without opening the drums at a temperature of +20 - +30 °C.
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.