Fireguard 75PA (B) Excel TDS
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CRYSTIC FIREGUARD 75PA (B) Excel Intumescent Fire Retardant Topcoat Introduction Crystic Fireguard 75PA (B) Excel is an intumescent topcoat based on an unsaturated polyester resin. Crystic Fireguard 75PA (B) Excel is available in standard in white, grey and black only, and the information contained in this technical datasheet applies to all three versions. Other colours can be made subject to a minimum order quantity. Applications Crystic Fireguard 75PA (B) Excel is suitable for use in the marine, building and transport industries. Features and Benefits Crystic Fireguard 75PA (B) Excel gives outstanding fire protection to FRP laminates which are accidentally exposed to direct flaming. It is also suitable as a fire-retardant coating on wood and other slightly porous surfaces. However, due to lack of adhesion after intumescence, it is not suitable for use on metals. Please contact Scott Bader for use on materials not listed. Approvals A properly applied, fully cured coating of Crystic Fireguard 75PA (B) Excel on a laminate made from standard general purpose resin can obtain a Class 1 rating to BS476 Part 7. This combination can also satisfy the requirements of BS476:Part 6: 1989+A1:2009 : “Fire tests on building materials and structures” for a Class 0 structure. Formulation Crystic Fireguard 75PA (B) Excel should be allowed to attain workshop temperature (18ºC-20ºC) before use. Stir well by hand, or with a low shear mixer to avoid aeration, and then allow to stand to regain thixotropy. Crystic Fireguard 75PA (B) Excel 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%. (Please consult our Technical Service Department before using other catalysts). The catalyst should be thoroughly incorporated into the Crystic Fireguard 75PA (B) Excel, with a low shear mechanical stirrer where possible. Curing should only be carried out at temperatures above 15°C. The Crystic Fireguard 75PA (B) Excel, the surface to be coated and the workshop should all be at, or above, this temperature. Application Crystic Fireguard 75PA (B) Excel should be applied to the reverse side of a GRP laminate, not the gelcoat face. The surface must be clean and dry, with any sheen or gloss removed. An application of 800g/m² will give the recommended coating thickness of 0.5mm (0.02 inch). Crystic Fireguard 75PA (B) Excel has been designed for brush application. Where application to wood or other substrates is required, the users should satisfy themselves that a serviceable bond can be obtained. Crystic Fireguard 75PA (B) Excel will be touch dry in 1-2 hours after application. Additives The addition of fillers or pigments to Crystic Fireguard 75PA (B) Excel is likely to affect the cure of this material and is not recommended. Recommended Testing It is recommended that customers test Crystic Fireguard 75PA (B) Excel 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 75PA (B) Excel 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 2% Butanox M50 (or other equivalent catalyst) Property Barcol Hardness (model GYZJ 934-1) Specific Gravity at 25°C Liquid Opaque, coloured Thixotropic 1.35 20 2 % months minutes 10 Fully cured*(unfilled casting) 40 1.46 * Curing Schedule - 24 hrs at 20ºC, 8 hrs at 60ºC Weathering Crystic Fireguard 75PA...