epoxy curing agent composite materials

TRIGONOX K-90 Product Description

TRIGONOX K-90 stands for isopropyl hydroperoxide, 90% aromatics solution, initiator for polymerization or copolymerization of styrene, butadiene, acrylonitrile, vinyl acetate, acrylate, and methacrylate. Can also be used for curing unsaturated polyester resin, is a kind of epoxy curing agent, a more commonly used composite material.

Without the addition of an accelerator the polymerization starts only above the activation temperature of 90°C. For the cure at lower temperature Trigonox K-90 must be accelerated by cobalt or vanadium. Together with cobalt accelerators the gel time at room temperature is very long and is therefore particularly suitable for those applications where a long production time is required, for instance in the production of large parts and in filament winding. Sufficiently fast gel and cure times are only obtained above 35°C.

Together with vanadium accelerators Trigonox K- 90 gives a short gel time and a fast cure at room temperature. This can be improved further by adding a special promotor, like pyruvic acid. With such a system it is possible to get a fast cure of UP resins, even at low temperature. Also for resins like vinylester resin, these combinations are very suitable.