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Henkel Terson MS939 MS Polymer Adhesive

TEROSON MS 939 is a 1-part, low modulus, flexible, odourless modified silane polymer adhesive used for elastic sealing and cures to an elastomeric thermoset product.

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product overview


TEROSON MS 939 is a 1-part, low modulus, flexible, odourless modified silane polymer adhesive used for elastic sealing and cures to an elastomeric thermoset product

TEROSON MS 939 is a black, white or grey, 1-part, low modulus, flexible, odourless modified silane polymer adhesive used for elastic sealing. It cures to an elastomeric thermoset product resistant to UV. It is sag-resistant leading to high initial tack. It is non-corrosive and free of solvents, isocyanates, silicones and PVC. The cure speed can be accelerated by using LOCTITE MS 9371B.

Teroson MS 939 is a gun-grade, one-component adhesive/sealant based on silane modified polymers, which cures by reaction with moisture to an elastic product. The skin formation and curing times are dependent on humidity and temperature, and the curing time also depends on joint depth. By increasing the temperature and moisture these times can be reduced;low temperature as well as low moisture retard the process. Teroson MS 939 is particularly sag-resistant leading to a high position tack after matching of the parts to be bonded. Teroson MS 939 is free of solvents, isocyanates, silicones and PVC. It demonstrates good adhesion to many substrates and iscompatible with suitable paint systems. The sealant also demonstrates good UV resistance and can therefore be used for interior and exterior applications. Teroson MS 939 demonstrates the strength necessary for elastic bonding. . Teroson MS 939 allows accelerated curing as two-component material. See separate data sheets Teroson MS Power & Speed Technology or Teroson MS 2c-Technology.

Featured properties

  • Very versatile
  • High strength
  • Good elasticity
  • Excellent weathering and UV resistance

Application

Teroson MS 939 is used for the following applications:

Elastic bonding of metals and plastics, e.g. side panelling and bonding of the roof skin in the vehicle and caravan manufacture. Elastic, interior and/or exterior seam and joint sealing in the following areas. Vehicle body, caravan, railway carriage, container and general metal construction; electrical, plastics, air- conditioning and ventilation industries

Pre-Treatment

The substrates must be clean, dry, oil- and grease free. Depending on the surface it can be necessary to roughen the surface or to use a primer/adhesion promoter to provide best adhesion. When manufacturing plastics, external release agents are often used; these agents must be accurately removed prior to starting bonding or sealing. Due to the different compositions of paints, especially powder paints and the large number of different substrates, application trials before use are necessary. For cleaning, TEROSON VR 10 or TEROSON SB 450 from the Henkel portfolio are suitable. Especially for plastics and coatings - powder coatings - TEROSON SB 450 has to be tested. When bonding and sealing PMMA, e.g. Plexiglas®, and polycarbonate, e.g. Makrolon® or Lexan®, under tension, stress corrosion cracking may occur. Application trials before use are necessary. There is no adhesion to polyethylene, polypropylene and PTFE. Substrates not mentioned above should be subject to trials

Application

Application from 290 mL cartridges is made with the TEROSON Hand or Air Pressure Pistols, and from foil cartridges (310 and 570 mL) with the corresponding FK-Hand or FK-Air Pressure Pistols. In the case of compressed air application a pressure of 2 to 5 bar is required Low material temperatures of the sealant will lead to an increase of viscosity, resulting in a lower extrusion rate. This can be avoided by bringing the sealant up to room temperature prior to application. TEROSON MS 939 can also be applied from hobbocks or drums with high pressure pumps with follower plates. See separate application directions of Teroson MS products in hobbocks and drums.

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Downloads

PDF

Henkel MS939 TDS

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Henkel MS939 MS Polymer Adhesive techncial data sheet

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PDF

Henkel MS939 SDS

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Henkel MS939 MS Polymer Adhesive safety data sheet

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Coverage Calculator

Use our coverage calculator to find out how much you need for your project.

Based on your length in metres:

litres of Henkel Terson MS939 MS Polymer Adhesive.

Including 10% wastage.

How do we calculate this?

1 Litre of Henkel Terson MS939 MS Polymer Adhesive covers 110 metres with a bead diameter of 3mm. You require enough product to cover metres including 10% wastage. m / 110m per Litre = Litres of product.

Calculate Coverage

Coverage Calculator

Use our coverage calculator to find out how much you need for your project.

Based on your length in metres:

litres of Henkel Terson MS939 MS Polymer Adhesive.

Including 10% wastage.

How do we calculate this?

1 Litre of Henkel Terson MS939 MS Polymer Adhesive covers 110 metres with a bead diameter of 3mm. You require enough product to cover metres including 10% wastage. m / 110m per Litre = Litres of product.

Calculate Coverage

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