Rubber adhesive generally used in the multi-isocyanate adhesive or rubber adhesive modified polyisocyanate adhesives, adhesive contained organic solvents can swell rubber surface, multi-isocyanate adhesive small molecular weight, can penetrate into the interior surface of rubber, and rubber in the presence of active hydrogen to form a covalent bond. polyisocyanate will react with moisture or biuret urea-based, and heat curing isocyanate occurs from the polymer to form a crosslinked structure, with the rubber molecules the formation of crosslinked network crosslinked interpenetrating polymer network (IPI), which adhesive layer has good physical properties. With ordinary rubber polyurethane adhesive bonding, because the materials group effect between the chemical and physical, but also to produce good adhesion.
PVC, PET, the surface of FRP and other plastics with polar groups in the urethane adhesive bond, ester bond, ether groups such baltimore #5 orange jersey as the formation of hydrogen bonds to form a certain bond strength of the joints. ; was that the glass fiber reinforced plastic (FRP) containing an OH group, in which the surface of an OH and PU adhesive in the formation of a chemical bonding force NCO reaction.
Non-polar plastics such as PE, PP, its surface is very low, with the polarity of the baltimore #5 orange jersey polyurethane adhesive bonding may encounter difficulties, this can be a variety of methods for surface treatment of
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