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Identification & Functionality
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Features and Benefits
- Crystic Fireguard Topcoat 72PAX has very low flammability.
Applications & Uses
- Applications
- Application Method
- Composites Processing Methods
- Applications
- Crystic Fireguard Topcoat 72PAX can be used both internally and externally for building, transport and general industrial work.
- Formulation Guidelines
- Crystic Fireguard Topcoat 72PAX 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 Topcoat 72PAX 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 topcoat. (Please consult our Technical Service Department if other catalysts are to be used). The catalyst should be thoroughly incorporated into the topcoat, with a low shear mechanical stirrer where possible.
- Spray Applications
Do's
- Gently stir the topcoat before use by hand or low shear stirrer.
- Ensure the topcoat 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 minimize porosity and color defects.
Dont's
- Stir the topcoat 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.
Properties
- Color
- Physical Form
- Topcoat Properties - Unfilled Casting (Cured)
- Typical Topcoat Properties (Uncured)
- Note
*Curing Schedule - 24hrs @ 20ºC, 3hrs @ 80ºC
† Curing Schedule - 24hrs @ 20ºC, 5hrs @ 80ºC, 3hrs @ 120ºC
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZ 934-1)* | 54 | — | SB, BS EN or BS EN ISO test method |
| Deflection Temperature (under load 1.80 MPa) †* | 80 | ºC | SB, BS EN or BS EN ISO test method |
| Elongation (at break)* | 2 | % | SB, BS EN or BS EN ISO test method |
| Tensile Strength* | 55 | MPa | SB, BS EN or BS EN ISO test method |
| Tensile Modulus* | 5200 | 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 |
| Volatile Content | 32 | % | 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 4% Accelerator E and 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 Topcoat 72PAX before use under their own conditions of application to ensure the required surface finish is achieved.
- Post Curing
- For many applications, Crystic Fireguard Topcoat 72PAX 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 Topcoat 72PAX is likely to affect the weathering and cure of this material and is not recommended.
Packaging & Availability
- Packaging Type
- Packaging
- Crystic Fireguard Topcoat 72PAX is supplied in 25 kg and 225 kg containers.
Storage & Handling
- Storage
- Crystic Fireguard Topcoat 72PAX 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.