Crystic 489PA Resin
Crystics 489 and 489PA are thixotropic, isophthalic polyester resins. When used with Crystic Gelcoat 65PA, they produce a matched performance system for moulding boat hulls with outstanding durability and superior blister resistance.
The outstanding wetting characteristics of Crystics 489 and 489PA give rapid impregnation with freedom from drainage. They are suitable for use with continuous rovings, carbon fibres and aramid fibres. Fully cured laminates made with Crystics 489 and 489PA have high mechanical and impact properties and excellent strength retention in wet environments at temperatures up to 40ºC. The interlaminar adhesion properties of the resins ensure that no loss in strength occurs at the interface between layers, following any delay in lay-up. Crystics 489 and 489PA are tinted blue, to facilitate easier identification and removal of any air trapped in laminates.
Crystics 489 and 489PA are approved by Lloyd’s Register of Shipping for use in the construction of craft under their survey, and by Det Norske Veritas. They also meet the requirements of B.S.3532:1990, Type B.
Crystics 489 and 489PA should be allowed to attain workshop temperature (18ºC-20ºC) before use. Crystic 489PA needs only the addition of a catalyst to start the curing reaction. The recommended catalyst is Catalyst M (or Butanox M50). The catalyst should be added at 1% or 2% into the resin and thoroughly dispersed, shortly before use.