Crystic Topcoat 65PAX Rapide is a pre-accelerated, isophthalic topcoat. It has been formulated for brush application. Standard brushing polyester flowcoat. For technical information such as gel times etc please refer to technical data sheet.
Applications:
Crystic Topcoat 65PAX Rapide is designed for use where a smooth finish is required on the reverse side of a laminate.
Formulation:
Crystic Topcoat 65PAX Rapide should be allowed to attain workshop temperature (18ºC-20°C) before use. Stir well by hand, or with a low shear mixer to avoid aeration, and then allow to stand to regain thixotropy. Crystic Topcoat 65PAX Rapide requires only the addition of catalyst to start the curing reaction. The recommended catalyst is a Medium Reactivity MEKP (or other equivalent catalyst), which should be added at 2% into the topcoat. The catalyst should be thoroughly incorporated into the Topcoat, with a low shear mechanical stirrer where possible..
Application:
For normal moulding, the application of Crystic Topcoat 65PAX Rapide should be controlled to 0.4-0.5 mm (0.015-0.020 inch) wet film thickness. As a guide, approximately 450-600 g/m2 of Topcoat mixture (depending on colour) will give the required thickness when evenly applied. Crystic Topcoat 65PAX Rapide is not suitable for use on parts which will be continually immersed in water, e.g. boat hull.
Additives:
Crystic Topcoat 65PAX Rapide is supplied in a wide range of RAL colours. The addition of fillers can adversely affect the quality of the surface achieved.
Recommended Testing:
It is recommended that before using Crystic pigmented gelcoats, customers test all colours under their own conditions of application to ensure they attain the quality surface finish they require.
Post Curing:
Curing at workshop temperature (20ºC) will be satisfactory for many applications. However, for optimum properties, laminates should be post-cured before being put into service. The moulding should be allowed to cure for 24 hours at 20ºC, and then be oven-cured for 3 hours at 80ºC.
Storage:
Crystic Topcoat 65PAX Rapide should be stored in its original container and out of direct sunlight. It is recommended that the storage temperature should be less than 20ºC where practical, and should not exceed 30ºC. Ideally, containers should be opened only immediately prior to use.
Please note - Polyester flowcoats are best used within six months from date of purchase.
