Method for accelerating the curing of adhesives
First Claim
1. A process for heating an adhesive composition by an electrical, magnetic or electromagnetic alternating field, characterized in that the adhesive composition containing nanoscale particles with superparamagnetic or piezoelectric properties heats up and, in the case of thermoplastic adhesives, is heated beyond the softening point of the thermoplastic binder, in the case of reactive adhesives, is heated to a temperature at which the binder matrix is crosslinked via the reactive groups of the binder.
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Accused Products
Abstract
Adhesive compositions, which contain nano-scale particles with ferromagnetic, ferrimagnetic, superparamagnetic or piezoelectric properties, can be heated by the action of an electric or magnetic or electromagnetic alternating field in such a manner that, in the case of thermoplastic adhesives, the bonding agent matrix is heated above the softening point of the thermoplastic bonding agent thereby enabling a joining of the substrates. In the case of reactive adhesives, the bonding agent matrix is heated to a temperature that induces the cross-linking of the bonding agent matrix via the reactive groups of the bonding agent. This method also enables the bonding agent matrix to be selectively heated in a manner that is rapid and preserves the same, without the substrates being subjected to a high thermal stress.
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Citations
14 Claims
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1. A process for heating an adhesive composition by an electrical, magnetic or electromagnetic alternating field, characterized in that the adhesive composition containing nanoscale particles with superparamagnetic or piezoelectric properties heats up and,
in the case of thermoplastic adhesives, is heated beyond the softening point of the thermoplastic binder, in the case of reactive adhesives, is heated to a temperature at which the binder matrix is crosslinked via the reactive groups of the binder.
Specification