Technical information
Himtrust PU-Polish is a transparent light-protective coating with increased wear resistance, applied over UV-sensitive materials.
Technical description
Two-component system.
Component A is a clear liquid with a specific smell.
Component B is a clear, thick liquid.
Physical and mechanical parameters
|
Parameter
|
Value
|
|
Apparent Brookfield viscosity at 25 °C
|
KA—50–200 KB (hardener) — 150–300 MPa×with
|
|
Density at 20 °C
|
KA—1,0–1,1 KB (hardener) — 1,07–1,1 g / cm3
|
|
Dry residue
|
not less than 80%
|
|
Surface film formation time
|
no more than 4 hours
|
|
Adhesion to metal, MPa
|
3–4
|
|
Adhesion to concrete, MPa
|
4–5
|
|
Shore a hardness, conventional units
|
55–65
|
|
Elongation at break, %
|
100–150
|
|
Tensile strength, MPa
|
2–4
|
|
Abrasion, mg/1000 rpm
|
50–60
|
Surface requirements
- Should meet SNiP 3.04.01–87 requirements.
- Air temperature from +5 °C to +35 °C.
- Surface humidity is not higher than 4 %.
- Surface temperature is 3 °C above the dew point.
Surface preparation
- Wash the dirt, corrosion products and scale.
- Clean the metal surface to the first degree in accordance with GOST 9.402 or Sa 2.5 ISO 8501–1 and a Rz degree of roughness of at least 60 microns in accordance with GOST 25142 or ISO 8503–2.
- Clean the concrete surface with a sanding machine or abrasive treatment.
Attention! Do not wash the surface with water.
Application
- Mix component A for 5 minutes.
- Pour component B into the container with component A . For a partial application use the ratio A:B–100: 50 by weight.
- Stir for 2 minutes until the liquid takes homogeneous form. Dry for one minute and re-mix for another minute. Mix thoroughly at the bottom and on the sides of the bucket.
- Let the mixture stand for 2 minutes to release the entrained air.
- Evenly distribute 0.1–0.2 mm. of the mixture with a roller, brush, or squeegee on the prepared surface.
- Wash the tools with toluene, xylene or solvent 646,once work is complete
- When coating is complete, isolate the room, blocking access to draughts, polluted air and insects.
- Curing time at 20 °C: 24 hours.
Health effects and precautions
Follow the SNiP III-4-80 safety regulations. Use personal protective equipment: a gas mask or protective mask, special clothing, covering all areas of the body, gloves, shoes.
Storage recommendations
Shelf life is 6 months from the date of manufacture at 20 °C and without opening buckets.
Problem solution
Problem: Bubbles, cavities, untreated or brittle areas on the surface, and the ingress of small debris and dirt particles during filling.
Solution:
- Remove the defective area with a sander or sandpaper.
- Clean the base.
- Re-apply a layer of Himtrust PU- Polish