Thursday, December 25, 2014

What is a MS Polymer adhesive?

MS Polymer or Modified silane adhesives were developed and launched in Japan during the 80's, due to the great advantage of these elastic adhesive compared to polyurethane adhesives, its use has increased highly in both European and American markets.

Modified silanes are one component adhesives which react and cure under the action of moisture, during its curing process by polycondensation this type of adhesives emit methanol and once cured acquire elastic properties and typical strength of an elastomeric material.

Depending on the chemical backbone or resin composition of the adhesive, on the market exist two types of modified silanes:
  • Polyether modified silanes
  • Polyurethane modified silanes
Polyether modified silanes are less resistent and more elastic compare with polyurethane modified silanes, latter are also known as hybrid polyurethanes.

Typical properties of modified silanes adhesives

Mechanical characteristics:

  • Are elastic and flexible
  • Tensile strength between 1 and 4 MPa, there silane modified based epoxy that can reach 8 Mpa.
  • Maximum elongation of 100% to 300%.

Chemical properties:

  • Very good UV resistance.
  • Can be painted, even shortly be applied (wet on wet).
  • Adhere to a wide range of materials (metal, ceramic and plastic) without primers or activators.
  • Do not contain isocyanates, hence, safe.
Applications and examples of modified silanes adhesives:

Modified silanes are used in all those applications that are used for polyurethane elastic adhesives, due to various advantages presented by these adhesives, industries are increasingly incorporating modified silanes in its processes.

Modified silanes are used for bonding glass in all types of vehicles, are also used for bonding side panels in trailers, trucks, etc ..., are used for fixing solar panels, assembly parts, interior elements, door and window construction, container construction, sealing joints, etc.

Countries with strict environmental regulations and job security can only use these types of adhesives to perform joins that require some degree of elasticity and strength.