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Polyurethane MASTIC PU

Based on polyurethane resins for sealing all types of expansion horizontal and vertical seams.

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Mastic PU is a single-component polymer material based on polyurethane resins, which is designed to fill expansion joints. After application, this product becomes an elastic solid state with high elasticity by absorbing air moisture. This mastic with high resistance to petroleum and chemical substances fills the seams of concrete structures and makes them impermeable.

Physical and chemical characteristics:

Physical state                                    Thick emulsion

Color                                                  Gray /white

Density                                               1.21 gr/cm³

Length increase percentage         > 900%

Return to initial state                    > 90%

Hardness                                           Shor A 23-25

Operating temperature                  to

Aplication  time                               60 minutes

Surface drying time                        1 to 2 hours

Properties and effects:

  • Running time 60 minutes
  • Surface drying time 1 to 2 hours
  • Resistant to water penetration and harmful environmental factors
  • Very high flexibility in heat and frost
  • Resistant to petroleum and chemical substances and UV
  • Non-toxic and can be used in drinking water projects
  • Extremely high adhesion to all kinds of materials
  • High elasticity and increase in length
  • No shrinkage and swelling
  • Resistant in tropical and cold areas
  • Stable against all types of oil, grease and oil

Application:

  • Filling the seams and cracks of concrete surfaces
  • Sealing water supply channels, pipes and water tanks
  • Filling expansion joints in water treatment plants, airports and refineries

In accordance with the standards:

ASTM C661 – ASTM C290 – ASTM C794 – ASTM D412 – ASTM C510 – ASTM C793 – ASTM D2240 – ASTM D1149

Consumption:

The amount of MASTIC PU consumption of this material is based on the volume of the seams, the number of seams and the specific weight of the material.

consumption instruction:

The surface under the work must be clean, dry and free from any type of contamination such as dust, grease, paint and previous coatings. Damaged parts must be repaired with a repairer. The surfaces should be completely smooth and solid by sanding. The depth of the seam should be equal to or about half the width of the seam. First, the mastic primer should be applied and after 3 hours and at most 5 hours later, Mastic PU should be applied by hand guns or injection tools.

Maintenance:

It can be stored in the original packaging and in a covered warehouse away from direct sunlight at a temperature of 10-30 degrees Celsius for one year after the date of manufacture.

packing:

20 kg packaging

safety tips:

This material is not flammable and is not harmful to the environment. Avoid contact with eyes and skin. In case of contact with eyes, wash with plenty of fresh water. It is recommended to use protective glasses and gloves while working. If swallowed, consult a doctor immediately.

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