Crestafire GCS 1001E
Since its founding in 1921, Scott Bader has been a global leader in advanced composites, adhesives, and functional polymers, delivering high-performance solutions to industries worldwide. Operating as an employee-owned company since 1951, Scott Bader manages a £200 million enterprise with 750 employees across 7 manufacturing sites and 18 global offices. Crestafire GCS 1001 E, a non-accelerated, low smoke, fire-retardant intumescent polyester-based gelcoat, exemplifies Scott Bader’s commitment to safety and innovation. Designed for rail and other high-risk applications, this gelcoat provides exceptional fire protection while maintaining ease of application and versatility.
In this blog post, we explore Crestafire GCS 1001 E in depth, covering its features, applications, technical specifications, and practical advantages, highlighting its role as a critical component in fire-safe composite manufacturing.
About Crestafire GCS 1001E
Crestafire GCS 1001 E is a non-accelerated, intumescent polyester-based gelcoat designed for spray application at a thin layer of 500 µm. It incorporates advanced intumescent technology, forming a foamed, cellular charred layer when exposed to fire, which provides a high degree of surface protection to composites. Available in a standard light grey color and intended for post-painting, this gelcoat is tailored for applications requiring stringent fire, smoke, and toxicity (FST) performance. When used with compatible resins, it achieves high fire ratings, making it a vital material for safety-critical environments.
Key Applications
Crestafire GCS 1001 E is engineered for composite components in industries where fire safety is paramount, particularly in rail applications. Its primary applications include:
- Railway: Achieves HL2 – R1/R7/R10/R17 fire ratings per EN 45545-2:2013 when paired with Crestafire P1-3001PA resin, and HL2 – R17 with Crystic VE 679-03PA, for interior and exterior components like panels, seats, and partitions.
- Building and Construction: Provides fire-retardant surfaces for public infrastructure, such as transportation hubs, hospitals, and commercial buildings.
- Public Transportation: Enhances safety in buses, trams, and ferries with low smoke and toxicity properties, ideal for confined spaces.
The gelcoat is designed for spray application, ensuring uniform coverage and compatibility with various laminate constructions, making it suitable for both indoor and outdoor composite components when post-painted with protective coatings.
Key Features and Benefits
Crestafire GCS 1001 E combines advanced fire protection with practical application benefits, making it a standout choice for safety-critical composites. Its intumescent technology and robust mechanical properties ensure reliability in demanding environments.
Key Features
- Intumescent Technology: Forms a protective, foamed charred layer when exposed to fire, shielding the composite surface.
- Low Smoke and Toxicity: Meets stringent FST requirements, ensuring safety in rail and public transport applications.
- High Fire Ratings: Achieves HL2 – R1/R7/R10/R17 (with Crestafire P1-3001PA) and HL2 – R17 (with Crystic VE 679-03PA) per EN 45545-2:2013.
- Spray Application: Designed for easy, uniform application at 500 µm wet film thickness, optimizing production efficiency.
- Post-Painting Compatibility: Light grey color supports post-painting with protective coatings for outdoor durability.
- Mechanical Performance: Offers good hardness (45 Barcol), tensile strength (25 MPa), and heat deflection temperature (60°C).
- Versatile Processing: Suitable for a range of laminate constructions, with lamination possible within 24 hours of application.
- Global Compliance: Meets rail industry standards, ensuring applicability in safety-critical projects worldwide.
Environmental and Industry Relevance
Crestafire GCS 1001 E addresses the growing need for fire-safe materials in industries facing strict regulatory requirements. Its low smoke and toxicity properties align with global safety standards, such as EN 45545-2 for rail, making it a trusted choice for high-risk environments. The gelcoat’s compatibility with various resins and laminate constructions allows manufacturers to tailor solutions to specific project needs, from lightweight rail components to durable construction panels. By enhancing fire protection, it supports safer public spaces and transportation systems, contributing to improved passenger and occupant safety. Additionally, its efficient application process reduces production time, aligning with industry demands for cost-effective, high-performance materials.
Technical Specifications
Liquid Gelcoat Properties
| Property | Unit | Value |
|---|---|---|
| Viscosity, ICI Cone & Plate, 25°C | Poise | 6 |
| Viscosity, Brookfield SP5 at 2.5 rpm, 25°C | MPa.s | 38,000 |
| Viscosity, Brookfield SP5 at 20 rpm, 25°C | MPa.s | 10,000 |
| Specific Gravity at 25°C | – | 1.4 |
| Stability (from manufacture date, per storage recommendations) | Months | 3 |
| Volatile Content | % | 24.3 |
Cured Gelcoat Properties
| Property | Test Method | Unit | Value |
|---|---|---|---|
| Barcol Hardness | EN59 | – | 45 |
| Water Absorption (24 hrs at 23°C) | BS EN ISO 62 part 6.2 | mg | 53 |
| Heat Deflection Temperature (1.8 MPa) | BS EN ISO 75-2 (1996) | °C | 60 |
| Elongation at Break | BS EN ISO 527-2 | % | 0.8 |
| Tensile Strength | BS EN ISO 527-2 | MPa | 25 |
Curing Schedules:
- Standard: 24 hours at 20°C + 3 hours at 80°C.
- Heat Deflection Temperature: 24 hours at 20°C + 5 hours at 80°C + 3 hours at 120°C.
Geltimes and Back-up Times
| Temperature | Curing System | Geltime | Back-up Time |
|---|---|---|---|
| 25°C | 1.5% MEKP 50% + 0.25% cobalt (6%) | 20 minutes | 45–60 minutes |
Note: Geltimes and back-up times are based on laboratory conditions. For longer geltimes, alternative catalysts or inhibitors can be used; contact Scott Bader’s Technical Support Department.
Usage Guidelines
Preparation
- Allow Crestafire GCS 1001 E to reach a working temperature of 23°C–25°C for optimal spraying performance.
- Stir gently by hand or with a low shear stirrer to avoid aeration, ensuring any filler sedimentation is redispersed.
- Add 1.0%–1.5% medium reactivity MEKP (50%) catalyst and mix thoroughly with a low shear mechanical stirrer.
Application
- Method: Apply via spray using an airless spray machine (minimum pump ratio 20:1, nozzle size/angle 623/50°) or a gravity pot gun (4–5.5 bar, size 7 or 8 nozzle tip).
- Thickness: Apply a mist coat, then build to a uniform 500 µm wet film thickness in long, even passes to maximize fire properties.
- Lamination: Apply the first laminate layer within 24 hours, approximately 1 hour after gelcoat application, to ensure adhesion.
- Mold Release: Use hard wax for mold release, as many liquid semi-permanent release agents are incompatible.
- Do:
- Stir gently before use and ensure workshop temperature is 20°C–25°C.
- Apply at exactly 500 µm thickness for optimal fire performance.
- Don’t:
- Use high shear mixers, which can break thixotropy and cause drainage.
- Apply uneven thickness or retain vapor in deep mold sections, which may slow curing.
Post-Curing
- For standard applications, cure at 20°C–25°C for 24 hours.
- For optimal fire performance, oven-cure for 16 hours at 40°C or 3 hours at 80°C after 24 hours at 20°C.
Manufacturing Considerations
Crestafire GCS 1001 E is designed for spray application, offering ease of use and consistent coverage in composite manufacturing. Its 500 µm thickness ensures optimal fire protection while minimizing material use, reducing production costs. The gelcoat’s compatibility with resins like Crestafire P1-3001PA and Crystic VE 679-03PA allows for flexible laminate designs, from lightweight rail panels to robust construction components. Manufacturers should ensure proper pump settings, nozzle selection, and air pressure to achieve uniform application. For outdoor components, post-painting with protective coatings is recommended to enhance durability. Individual component testing is mandatory to verify fire performance, and Scott Bader’s Technical Support Department can provide guidance on compatible paints and laminate constructions.
Storage
- Store between 5°C and 25°C in original, unopened containers in a dry, well-ventilated area.
- Protect from freezing, direct sunlight, and oxidizing agents.
- Shelf life is 3 months; storage outside these conditions significantly reduces stability.
Packaging
- Available in 25kg and 225kg containers, accommodating various production scales.
Health and Safety
Refer to the Safety Data Sheet for detailed instructions on safe handling of Crestafire GCS 1001 E and its catalysts. Use appropriate protective equipment and ensure adequate ventilation during application.
Why Choose Crestafire GCS 1001 E?
Crestafire GCS 1001 E redefines fire safety in composites with its innovative intumescent technology, delivering exceptional protection for rail, construction, and transportation applications. Its ability to achieve HL2 fire ratings per EN 45545-2:2013 ensures compliance with the rail industry’s stringent standards, making it a trusted choice for safety-critical environments. The gelcoat’s low smoke and toxicity properties enhance passenger and occupant safety, while its efficient spray application and compatibility with various resins streamline production, reducing costs and complexity.
By offering robust fire protection in a thin 500 µm layer, Crestafire GCS 1001 E optimizes material use without compromising performance. Its versatility, paired with Scott Bader’s global technical support and century-long expertise, empowers manufacturers to create safer, more durable composites. Whether for rail interiors, public infrastructure, or transportation systems, Crestafire GCS 1001 E delivers unmatched fire safety and reliability, supporting safer and more sustainable public spaces.
For further details or technical support, contact Scott Bader.
Disclaimer: All information is based on laboratory testing and is not intended for design purposes. We and Scott Bader makes no warranties regarding this data. Users are responsible for verifying the suitability of products for their specific applications. Availability may vary by region due to regulatory restrictions; contact your local Scott Bader representative for details. For more Information About Lubricants Visit Our Articles
