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Product Introduction
This high silica fabric is woven from high silica fibers with a silicon dioxide content of 96% or higher. The material serves as a replacement for asbestos and ceramic fiber cloth. The continuous operating temperature reaches 1000°C, with short-term resistance up to 1650°C. The fabric exhibits high strength, ease of processing, and a wide range of applications as a high-temperature resistant, oil flame resistant, heat insulation, and thermal insulation material. Product thickness ranges from 0.7mm to 1.3mm. Surface coatings can be applied according to user requirements.
Core Advantages
Ultra-High Purity Silica Content
Silicon dioxide content of 96% or higher provides superior thermal stability and chemical resistance compared to standard glass fiber fabrics.
Exceptional Temperature Resistance
Continuous operation at 1000°C. Withstands short-term exposure up to 1650°C, suitable for extreme high-temperature applications.
Asbestos Replacement
Provides similar high-temperature performance to asbestos without the associated health hazards. Safe to handle with standard precautions.
High Mechanical Strength
High silica fibers provide tensile strength while maintaining flexibility for fabrication and installation.
Easy Processing
The fabric can be cut, sewn, and fabricated using standard textile equipment. Adaptable to various product forms including blankets, tapes, and sleeves.
Ceramic Fiber Alternative
Provides superior strength and lower dust generation compared to ceramic fiber cloth. Offers similar temperature resistance with better handling characteristics.
Product Features
Base material High silica fiber with SiO₂ content ≥96%. Continuous temperature rating: 1000°C. Short-term peak: 1650°C (less than 30 seconds).
Fiber properties Fiber diameter: 6-9 micrometers. Density: 2.20 g/cm³. Tensile strength: >800 N per 50mm width (varies by thickness).
Thickness range 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm. Custom thicknesses available.
Surface coating options Silicone coating (up to 260°C), aluminum coating (reflectivity), vermiculite coating (abrasion resistance). Coating adds additional protection and reduces fiber dust.
Flame resistance Non-combustible. Does not melt or drip. Zero flame spread per ASTM E84.
Available widths 800mm, 900mm, 1000mm, 1200mm. Custom widths available.
Technical Specifications
| Parameter | Specification |
|---|---|
| Continuous operating temperature | 1000°C |
| Short-term peak temperature | Up to 1650°C (less than 30 seconds) |
| Melting point | Approximately 1500°C |
| SiO₂ content | ≥96% |
| Available thicknesses | 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm |
| Fabric weight (1.0mm thickness) | Approximately 800-1000 g/m² |
| Tensile strength (1.0mm) | >1000 N per 50mm width (warp direction)Thermal conductivity at 500°C0.035-0.040 W/m·KLinear shrinkage (1000°C, 24 hrs)<3%Standard width800mm, 900mm, 1000mm, 1200mmColorOff-white (natural), tan after heat exposureCoating optionsSilicone, aluminum, vermiculite (upon request) |
Application Scenarios
High-temperature furnace curtains
Welding protection blankets
Thermal insulation covers
Oil-burner gaskets and seals
Heat shielding in metallurgy
Glass industry thermal barriers
Ceramic kiln furniture covers
Aerospace thermal protection systems
This high silica fabric is suitable for high-temperature industrial applications where standard glass fiber or ceramic fiber materials may degrade. Applications include furnace curtains and seals for heat treatment furnaces operating at 1000°C, welding protection blankets for metal fabrication, and removable thermal insulation covers for high-temperature piping and equipment. The fabric serves as oil-burner gaskets and seals in combustion systems, heat shielding in metallurgical processing, and thermal barriers in glass manufacturing. The material also applies to ceramic kiln furniture covers and aerospace thermal protection systems where high-temperature resistance and low thermal conductivity are required. As an asbestos replacement, the fabric provides equivalent performance without health hazards associated with asbestos fibers.
Common Questions and Solutions
What is the difference between high silica fabric and ceramic fiber cloth?
High silica fabric has higher tensile strength and better abrasion resistance than ceramic fiber cloth. It produces less airborne dust during handling and installation. High silica fabric maintains flexibility better than ceramic fiber cloth after repeated thermal cycling. Ceramic fiber has slightly lower thermal conductivity but is more fragile and produces more friable dust.
How does this fabric compare to asbestos for high-temperature applications?
High silica fabric provides similar or superior thermal performance to asbestos with continuous operation at 1000°C and short-term exposure to 1650°C. Unlike asbestos, high silica fibers are not classified as carcinogenic under normal handling conditions. The fabric maintains flexibility and mechanical strength across the temperature range, comparable to asbestos materials.
Can the fabric be used in direct contact with molten metal?
The fabric can withstand short-term splash contact with molten metal but is not designed for continuous immersion. For molten aluminum applications (660°C) and some non-ferrous metals, the fabric provides temporary protection. For continuous molten metal contact, specialized coatings or higher-density materials are recommended.
What happens to the fabric after exposure to high temperatures?
After first exposure to temperatures above 800°C, the fiber sizing burns off, and the fabric color changes from off-white to tan or light brown. The fabric may become slightly stiffer but maintains structural integrity. Mechanical strength may decrease by 10-20% after initial heat exposure, after which the material stabilizes for continued high-temperature service.
How should the fabric be cleaned or maintained?
Do not wash or immerse the fabric in water as absorbed moisture may cause steam formation upon reheating. Remove surface dust using a HEPA vacuum or compressed air. For fabric with oil or grease contamination, replacement is recommended rather than cleaning, as contaminants may burn off during heating but can leave residue.
What health precautions should be taken when handling high silica fabric?
Wear gloves, long sleeves, safety glasses, and an N95 respirator when cutting or handling high silica fabric. The fibers can cause mechanical skin and respiratory irritation similar to glass fiber. Work in a well-ventilated area. Wash hands after handling. Unlike asbestos, high silica fibers are not classified as carcinogenic, but standard dust precautions apply.
Installation and Handling Considerations
Store high silica fabric in a dry, clean area. The fabric does not absorb significant moisture but should be kept dry to prevent surface contamination. Avoid folding in the same location repeatedly to prevent fiber breakage.
Cut the fabric using sharp scissors, a rotary cutter, or a utility knife. For production quantities, use a die cutter or CNC cutting machine. For curved cuts, a hot knife can be used to seal the edges and prevent fraying.
Sew the fabric using high-temperature thread such as Nomex, fiberglass, or PTFE-coated thread. Use a needle size appropriate for fabric thickness (size 90-110). Stitch length: 4-6 stitches per centimeter. For high-temperature applications above 800°C, use stainless steel wire for seams instead of thread.
When installing as a thermal barrier, allow 10-15% overlap between fabric sections to ensure complete coverage. Use high-temperature adhesive, mechanical fasteners, or stainless steel wire to secure the fabric in place. Do not use organic adhesives that may burn off at high temperatures.
For applications with vibration or movement, reinforce attachment points with metal grommets or backing plates. The fabric can tear at attachment points under repeated stress. Use washers on fasteners to distribute load over a larger fabric area.
Inspect the fabric periodically for wear, fraying, or discoloration. Replace sections that show significant degradation or where the fabric has been exposed to molten metal or chemical spills. After each thermal cycle above 1000°C, inspect for cracking or embrittlement. The typical service life in continuous 1000°C operation is 6-12 months depending on mechanical stress and thermal cycling frequency.
