1600°C High-Temperature Polycrystalline Mullite Fiber Blanket
1. Product Introduction
The 1600°C polycrystalline fiber blanket exhibits excellent thermal stability, corrosion resistance, and thermal shock resistance. Its long-term service temperature reaches 1600°C, with short-term tolerance at even higher temperatures, making it a high-end upgrade over conventional fiber materials.
Due to its uniform fiber structure and superior physicochemical properties, the blanket is widely used in metallurgy, petrochemicals, power generation, aerospace, military, and high-temperature heat treatment industries, providing outstanding insulation, heat preservation, and fire protection for equipment.
2. Product Features
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Extreme High-Temperature Resistance: Can operate continuously at 1600°C, maintaining stable shape and reliable performance.
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Outstanding Thermal Stability: Retains original physical properties after repeated heating-cooling cycles; no powdering or delamination.
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Excellent Chemical Stability: Resistant to most acids and alkalis, ideal for complex high-temperature corrosive environments.
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Low Thermal Conductivity: Maintains low heat transfer, ensuring effective insulation.
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Low Heat Capacity: Rapid thermal response for energy saving, especially suitable for frequently started and stopped heat-treatment operations.
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Good Mechanical Strength and Flexibility: High tensile strength, resistant to breakage, easy to cut and install.
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Environmentally Friendly and Non-Toxic: Free of asbestos; compliant with EU RoHS and REACH standards.
3. Technical Parameters
| Item | Unit | Data |
| Product Name | — | Polycrystalline Fiber Blanket |
| Service Temperature | ℃ | ≤1600 |
| Melting Point | ℃ | >1800 |
| Density | kg/m³ | 96 / 128 / 160 (customizable) |
| Thermal Conductivity | W/m·K | 0.20 (800℃) / 0.29 (1000℃) / 0.38 (1200℃) |
| Tensile Strength | MPa | ≥0.4 |
| Chemical Composition | % | Al₂O₃≥72%, SiO₂≤28%, Others≤1 |
| Combustibility | — | Non-combustible |
| Environmental Certification | — | RoHS, REACH |
4. Product Specifications
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Thickness: 6mm – 50mm
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Width: 610mm (standard) or customized
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Length: 7200mm (varies with thickness)
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Packaging: Cartons or woven bags with waterproof lining
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Customization: Density, thickness, surface treatment options available
5. Applications
Industrial Furnace Insulation: Ceramic kilns, tunnel kilns, glass kilns, high-temperature heat treatment furnaces.
Metallurgy: Steel ladles, intermediate ladle covers, heating furnaces, homogenizing furnaces.
Aerospace & Military: Rocket nozzles, heat shields, high-temperature airflow equipment.
Petrochemical & Power: Pipeline insulation, high-temperature equipment casings, reactors.
High-Temperature Sealing & Fire Protection: Fire door cores, gaskets, expansion joints.
6. Installation & Handling
Installation Suggestions:
Keep installation environment dry and clean; cut and paste according to application; modular installation possible; secure using ceramic anchors, metal hooks, or ceramic adhesives; for dynamic surfaces, add support structures.
Safety Measures:
Wear goggles, masks, and gloves to avoid fiber dust inhalation or skin irritation.
Storage & Handling:
Store in a ventilated, dry place; avoid moisture, compression, or rough handling.
7. Product Advantages Comparison
| Feature | Polycrystalline Fiber Blanket | Conventional Ceramic Fiber Blanket |
| Maximum Service Temperature | 1600℃ | 1260–1430℃ |
| Long-Term Thermal Stability | Excellent | Medium |
| Chemical Stability | Strong | Moderate |
| Anti-Powdering Ability | Very High | General |
| Environmental Performance | High | Pass |
| Cost | Higher | Medium |
| Performance/Price Ratio | High | Medium |
8. Quality Control & Testing
（1）Raw material purity testing (XRF analysis)
（2）Thermal conductivity measurement
（3）Refractory limit evaluation
（4）Fiber diameter distribution (electron microscope)
（5）Tensile strength and density inspection
（6）Environmental compliance testing (RoHS & REACH)
9. Packaging & Transportation
Packaging: Roll with waterproof film, carton or pallet; labeled with product name, specs, batch, production date.
Transport Recommendations: Transport in full pallets to avoid compression; export options include wooden crates or container bulk.
Storage Conditions: -10℃ to 40℃, avoid heavy pressure, rain, or direct sunlight.
10. Services & Support
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Sample requests: Free small samples for testing
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Technical support: Selection guidance, installation advice, energy-saving evaluation
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Customization: Custom sizes, densities, composite materials available
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After-sales: Return, replacement, and technical solutions for quality issues
11. FAQ
Q1: How does the polycrystalline fiber blanket differ from ordinary fiber blankets?
A1: Polycrystalline blankets use high-purity raw materials and crystallization treatment, with service temperatures up to 1600°C, unlike amorphous ordinary blankets (≤1400°C).
Q2: What operating conditions are suitable?
A2: High-temperature, corrosive, thermal shock, or long-term continuous operations, e.g., heat-treatment furnaces, aerospace equipment.
Q3: Is the material environmentally friendly?
A3: Yes, asbestos-free, non-carcinogenic, and compliant with RoHS and REACH standards.
Q4: Do you provide installation services?
A4: Technical guidance, remote installation planning, and local professional teams are available.
Q5: Can density or composite layers be customized?
A5: Yes, options include aluminum foil, fabric, or paper composite layers.
