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CRYSTIC®  VE676-03PA - 1

SCOTT BADER Introduction Crystic VE676-03 is a bisphenol A epoxy based, vinyl ester resin. Applications Crystic VE676-03 was designed for use in closed mould applications and centrifugal casting processes. It is recommended for the manufacture of fibre reinforced composite tanks, vessels, ducts etc. for use in chemical processing applications and in marine applications. Features and Benefits Crystic VE676-03 has excellent resistance to a wide range of chemical substances (acid, alkalies and oxidising agents). Product Characteristics Formulation Crystic VE 676-03 should be allowed to attain workshop temperature (18°C-20°C) before use. It requires the addition of a catalyst and accelerators to start the curing reaction. The correct amount of Accelerator G (1% Cobalt) and Acetyl Acetone should be stirred into the resin. The recommended catalyst is Trigonox 239, which should be added at 2% into the resin and thoroughly dispersed. The geltime can be adjusted by varying the levels of Acetyl Acetone. N.B. Catalyst and accelerator must not be mixed directly together, as they can react with explosive violence. Typical properties The following tables give typical properties of Crystic VE 676-03 when tested in accordance with the appropriate BS, or BS EN ISO test method. * Curing Schedule - 24 hrs at 20°C, 3 hrs at 80°C. fCuring Schedule - 24 hrs at 20°C, 5 hrs at 80°C, 3 hrs at 120°C.

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CRYSTIC®  VE676-03PA - 2

Laminate Construction - Veil, 2 x CSM, WR, CSM, WR, CSM Post Curing Satisfactory laminates for many applications can be made from Crystic VE676-03 by curing at workshop temperature (20°C). However, for optimum properties and long term performance laminates must be post cured before being put into service. Mouldings should be allowed to cure for 24 hours at 20°C and then be oven cured for a minimum of 3 hours at 80°C. Post curing at 100°C is advisable if mouldings are to operate at high temperatures. Storage Crystic VE 676-03 should be stored in the dark in suitable closed containers. It is...

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