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Polyurethane adhesives are those glues that are made of urethane polymers with chemical based of isocyanate group also known as elastic adhesives, due they have an extraordinary elasticity and elongation before the fracture occurs (up to 600%), and also like epoxy adhesives exist rigid polyurethane adhesives, due to the high fracture resistance presented by these adhesives about 25 MPa.
The elastic polyurethane adhesives are cured by polyaddition reactions, taking on a slightly reticulated structure with properties of an elastomer material; rigid polyurethane adhesives are as well as cure by polyaddition but they also acquire a high crosslink structure of thermoset material.
There are 3 different types of polyurethane adhesives or glues:
ALEXIT® BladeRep Profile Filler 3 is a solvent free, two-component polyurethane filler designed to be used for filling and fairing on GRP substrates. This non-porous filler cures to an easily sandable surface.
ALEXIT® BladeRep Pore Filler 6 is a solvent free, two-component polyurethane filler designed to seal any surface prior to applying BladeRep LEP 9 or BladeRep Topcoat 12. It fills pin holes and minor defects on GRP substrates and cures to an easily sandable surface.
ALEXIT® BladeRep® Profile Filler 5 is a solvent free, two-component polyurethane filler designed to be used for filling and fairing on GRP substrates. This non-porous filler cures to an easily sandable surface.
ALEXIT® BladeRep® LEP 10 is specifically designed one-layer coating with excellent abrasion and erosion resistance. This two-component, solvent free polyurethane product has superior elasticity and flexibility for long-term leading edge protection.
TensorGrip® M38 NON-MECL LOW VOC is a revolutionary, high performance plasticiser resistant adhesive, specially formulated to bond all commonly used substrates found within the foam and upholstery industry. TensorGrip® M38 NON-MECL LOW VOC is a high performance plasticiser resistant adhesive, specially formulated to bond all commonly used substrates found...