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Identification & Functionality
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Features and Benefits
- Crystic Fireguard 73PA has very low flammability.
Applications & Uses
- Applications
- Application Method
- Formulation Guidelines
- Crystic Fireguard 73PA should be allowed to attain workshop temperature (18°C-20°C) before use. Stir well by hand with a low shear stirrer to avoid aeration and then allow to stand to regain thixotropy.
- Crystic Fireguard 73PA 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.
- Applications
- Crystic Fireguard 73PA can be used both internally and externally for building, transport and general industrial work.
- For normal molding, the application of Crystic Fireguard 73PA should be controlled to 0.4 - 0.5mm (0.015 - 0.020 inch) wet film thickness. As a guide, approximately 550-750g/m² of gelcoat mixture (depending on pigment) will give the required thickness when evenly applied.
Properties
- Color
- Physical Form
- Gelcoat Properties - Unfilled Casting (Cured)
- Typical Gelcoat Properties (Uncured)
- Note
*Curing Schedule - 24 hrs at 20ºC, 3 hrs at 80ºC.
† Curing Schedule - 24 hrs at 20ºC, 5 hrs at 80ºC, 3 hrs at 120ºC.
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZ 934-1)* | 52 | — | SB, BS EN or BS EN ISO test method |
| Deflection Temperature (under load 1.80 MPa) †* | 78 | ºC | SB, BS EN or BS EN ISO test method |
| Elongation (at break)* | 1.7 | % | SB, BS EN or BS EN ISO test method |
| Tensile Strength* | 57 | MPa | SB, BS EN or BS EN ISO test method |
| Tensile Modulus* | 5400 | MPa | SB, BS EN or BS EN ISO test method |
| Value | Units | Test Method / Conditions | |
| Specific Gravity (at 25°C) | 1.4 | — | SB, BS EN or BS EN ISO test method |
| Stability (at 20°C) | 3 | Months | SB, BS EN or BS EN ISO test method |
| Gel Time (at 25°C, using 2% Butanox M50 (or Other Equivalent Catalyst)) | 6 - 10 | Minutes | SB, BS EN or BS EN ISO test method |
Technical Details & Test Data
- Recommended Testing
- It is recommended that customers test Crystic Fireguard 73PA before use under their own conditions of application to ensure the required surface finish is achieved.
- Post Curing
For many applications, Crystic Fireguard 73PA will perform adequately when cured at workshop temperature (20°C). However, for optimum properties it should be allowed to cure for 24 hours at 20°C, and then be oven-cured for 3 hours at 80°C.
- Additives
- The addition of fillers or pigments to Crystic Fireguard 73PA is likely to affect the weathering and cure of this material and is not recommended.
Packaging & Availability
- Packaging Type
- Packaging
- Crystic Fireguard 73PA is supplied in 25Kg and 225Kg containers.
Storage & Handling
- Storage
- Crystic Fireguard 73PA 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, but should not exceed 30ºC. Ideally, containers should be opened only immediately prior to use.