More Views
Hardeners - Catalysts
Details
Catalyst allows polyester, gelcoat and vinyl ester resins to cure by reacting with the promoter in the resin, or with heat. This starts the chemical reaction of the resin with the styrene monomer (present in the resin) allowing cross-links to form between them.
These cross-links act as braces, joining the components in the liquid resin together. When some of the cross-links have formed, the resin forms a gel and is said to be “gelled”. When most of the cross-links have formed, the resin forms a solid and is said to be “cured”.
Overview
1. Methyl Ethyl Ketone Peroxide (MEKP) General applications for use in ambient temperature
2. Benzoyl Peroxide (BPO) For use above 80°C or in combination with an amine promoter
3. Cumene Hydroperoxide (CHP) For use above 80°C or in combination with promoters
4. Acetyl Acetone Peroxide (AAP) Used where fast cure is required
5. Tertiary butyl peroctoate (TBPO) Used in heat curing processes such as pultrusion and hot press molding
6. Tertiary butyl perbenzoate (TBPB) Used in heat curing processes such as pultrusion and hot press molding
7. Cyclohexanone Peroxide (COX) Gives a more gradual cure