MK 2639

MK 2639 is a high-quality one-component polyurethane sealant.

Used in the production of cars, containers, caravans, railway carriages, ventilation and air conditioning systems, the gluing of mirrors. and for different applications in the nautical sector.

  • External, internal gluing, joints subject or not to expansion, joints in floors, industrial soils, car parks.
  • Excellent adhesion on different substrates, on many occasions without the use of specific surface primers.
  • Not suitable for surfaces exposed to UV rays through glass or crystal surfaces or for plastic materials with high plasticizer content.
  • High modulus – very elastic.
  • Water-solvent based over paintable.
  • Silicones free.
  • It does not discolour – Applicable on damp or wet surfaces.
  • Resistant in harsh environments.
  • No shrinkage.

FCA, Iveco, Approved


Attachment

TDS MK 2639_ENG

Description

PROPERTIES VALUES
CHEMICAL NATURE Polyurethane
COLOUR White, Black, Grey
APPEARANCE Thixotropic paste
VISCOSITY  > 200.000 mPa.s
DENSITY 1,18 ± 0.05 g/ml
HARDNESS  (ISO 868) 50 Shore A
MODULUS AT BREAK (ISO 8339) 0.6 MPa
ELONGATION AT BREAK (ASTM D412) > 500 %
TENSILE STRENGHT   (DIN 50504) 3,0 MPa
SKIN TIME 40-50 min. (23°C & 50 % R.H.)
CURE TIME 3,5 mm / day (23°C & 50 % R.H.)
TEMPERATURE RESISTANCE – 40 / +100°C
APPLICATION TEMPERATURE +5 / +35°C
ACCESSIBILITY 6 – 12 h
RESISTANCE TO DILUTED ACIDS AND BASES MEDIUM
RESISTANCE TO SOLVENTS AND HYDROCARBONS MEDIUM
RESISTANCE TO UV RADIATION MEDIUM
RESISTANCE TO WATER AND SALT SPRAY EXCELLENT

Additional information

Specific work-setting (component)

DYNAMIC bonding-line > 100 cm (IMPACTS + VIBRATIONS + TORSIONS), Operating Temperature <0 ° C, STATIC bonding-line <100 cm (LIGHT HANDLING)

Substrates (suitable adherings match))

GLASS # METALS and / or ALLOYS (Al – Ti – Ni – Cr – Fe), HIGH ENERGY SURFACE THERMO-PLASTIC POLYMERS # HIGH ENERGY SURFACE THERMO-PLASTIC POLYMERS, HIGH ENERGY SURFACE THERMO-PLASTIC POLYMERS # METALS and / or ALLOYS (Cu / Zn – Fe – Pb), METALS and / or ALLOYS (Al – Ti – Ni – Cr – Fe) # HIGH ENERGY SURFACE THERMO-PLASTIC POLYMERS, METALS and / or ALLOYS (Al – Ti – Ni – Cr – Fe) # METALS and / or ALLOYS (Al – Ti – Ni – Cr – Fe), METALS and / or ALLOYS (Cu / Zn – Fe – Pb) # METALS and / or ALLOYS (Al – Ti – Ni – Cr – Fe), METALS and / or ALLOYS (Cu / Zn – Fe – Pb) # METALS and / or ALLOYS (Cu / Zn – Fe – Pb), SEMI-FINISHED BUILDINGS # METALS and / or ALLOYS (Cu / Zn – Fe – Pb), SEMI-FINISHED BUILDINGS # SEMI-FINISHED BUILDINGS, WOOD # GLASS REINFORCED FIBER COMPOSITES, WOOD # WOOD

Adhesive Working Time

10 ÷ 30 MINUTES

Adhesive Fixture Time

6 h ÷ 12 h

component sector/process

AUTOMOTIVE – TRUCK – BUS – AGRICULTURAL, FORESTRY MACHINES, INDUSTRIAL COMPONENTS, NAUTICAL & NAVAL, TRAINS

Type of failure mode (after joint stress)

ADHESIVE (bonding failure between adhesive and adhering: no residue on substrates)

Type of joint (application mode)

BEAD – OVERLAP

Whatsapp Contact Adhesive