Crystic Fireguard Gelcoat 72PA - Feb 11
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Crystic Fireguard Gelcoat 72PA Fire Retardant Spray Gelcoat Introduction Crystic Fireguard Gelcoat 72PA is a pre-accelerated filled spray gelcoat. It is available in a wide range of colours and the information contained in this technical data sheet also applies to these pigmented versions. Applications Crystic Fireguard Gelcoat 72PA can be used both internally and externally for building, transport and general industial work. Features and Benefits Crystic Fireguard Gelcoat 72PA has very low flammability. Approvals A properly applied, fully cured coating of Crystic Fireguard Gelcoat 72PA and Crystic 1355PA can obtain a Class 1 rating according to BS476 Part 7. Formulation Crystic Fireguard Gelcoat 72PA should be allowed to attain workshop temperature (18°C-20°C) before use. Stir well by hand or with a low shear stirrer to avoid aeration and then allow to stand to regain thixotropy. Crystic Fireguard Gelcoat 72PA requires only the addition of catalyst to start the curing reaction. The recommended catalyst is Butanox M50 (or other equivalent catalyst) which should be added at 2% into the gelcoat. (Please consult our Technical Service Department if other catalysts are to be used). The catalyst should be thoroughly incorporated into the gelcoat, with a low shear mechanical stirrer where possible. Spray Application Do • Gently stir the gelcoat before use by hand or low shear stirrer. • Ensure the gelcoat has attained workshop temperature of 18°C-25°C before use. (Temperatures below 18°C will require higher pressure to achieve an acceptable spray pattern and this will encourage porosity). • Spray at the minimum practical pressure whilst maintaining an acceptable spray pattern and full fan width. • Apply a mist coat and then build up thickness in long, even passes until the recommended wet film thickness of 0.4-0.5mm (0.015-0.020 inch) is reached. This will minimise porosity and colour defects. Don’t • Stir the gelcoat with high shear mixers as this will temporarily break down the thixotropy leading to drainage. • Exceed a wet film thickness of 0.625mm (0.025 inch) as thick films encourage air retention. • Apply excessive thickness in corner areas as this can cause pre-release. Additives The addition of fillers or pigments to Crystic Fireguard Gelcoat 72PA is likely to affect the weathering and cure of this material and is not recommended.

Recommended Testing It is recommended that customers test Crystic Fireguard Gelcoat 72PA before use under their own conditions of application to ensure the required surface finish is achieved. Typical Properties The following tables give typical properties of Crystic Fireguard Gelcoat 72PA when tested in accordance with SB, BS EN or BS EN ISO test methods. Property Appearance Viscosity at 25ºC Specific Gravity at 25ºC Volatile Content Stability at 20ºC Gel time at 25ºC using 4% Accelerator E and 2% Butanox M50 (or other equivalent catalyst) Liquid Opaque, coloured Thixotropic 1.40 32 3 6...