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Product Introduction
This basalt fabric is manufactured from basalt fiber fine yarns processed through textile techniques. The fabric exhibits soft texture with resilience and flexibility. It provides thermal insulation, high-temperature resistance, chemical corrosion resistance, non-irritant properties, and non-melting characteristics. The fabric is widely used in the production of protective equipment for welding and gas-cutting working environments. It also applies to textile manufacturing, chemical industry, metallurgy, theater, military applications, ventilation systems, fire protection equipment, and other protective equipment fields. Surface coating treatments can be applied according to user requirements.
Core Advantages
Soft and Resilient Texture
The fabric maintains flexibility and resilience, allowing it to conform to curved surfaces and complex shapes without cracking.
High-Temperature Resistance
Continuous operating temperature from -200°C to +650°C, with intermittent exposure up to 850°C.
Chemical Corrosion Resistance
Resistant to acids, alkalis, and most organic solvents. Maintains structural integrity in chemically aggressive environments.
Non-Irritant Properties
Basalt fibers cause less skin irritation than glass fibers. No chemical binders or additives that may cause allergic reactions.
Non-Melting Characteristics
The fabric does not melt or drip when exposed to open flame or high temperatures. Provides reliable fire barrier protection.
Coating Customization
Surface coatings available for enhanced abrasion resistance, chemical protection, or additional thermal performance.
Product Features
Base material Basalt fiber fine yarns processed from natural volcanic rock. Continuous temperature rating: -200°C to +650°C. Intermittent peak: 850°C.
Fiber properties Fiber diameter: 6-12 micrometers. Density: 2.65-2.80 g/cm³. Tensile strength: 3000-4800 MPa.
Fabric texture Soft and resilient. Available in plain weave or twill weave. Good drapability for conforming to complex shapes.
Chemical resistance Resistant to most acids (except HF), alkalis, salt solutions, and organic solvents. Superior to E-glass in alkali environments.
Thermal conductivity 0.031-0.038 W/m·K at 500°C. Provides effective thermal insulation across the temperature range.
Available thicknesses 0.3mm to 2.0mm. Standard widths: 800mm, 1000mm, 1200mm. Custom sizes available.
Technical Specifications
| Parameter | Specification |
|---|---|
| Continuous operating temperature | -200°C to +650°C |
| Intermittent peak temperature | Up to 850°C (short duration) |
| Melting point | Approximately 1350°C |
| Fiber diameter | 6-12 micrometers |
| Density | 2.65-2.80 g/cm³ |
| Tensile strength | 3000-4800 MPa (fiber), >800 N per 50mm width (fabric, thickness dependent) |
| Elastic modulus | 85-95 GPa |
| Elongation at break | 2.5-3.5% |
| Thermal conductivity at 500°C | 0.031-0.038 W/m·K |
| Dielectric constant (20°C, 1MHz) | 6.0-6.5 |
| Available thicknesses | 0.3mm, 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm |
| Standard widths | 800mm, 1000mm, 1200mm |
| Color | Natural dark gray to brown (varies by source rock) |
Application Scenarios
Welding and gas-cutting protective equipment
Textile manufacturing machinery covers
Chemical industry filtration and protection
Metallurgy thermal barriers
Theater stage fire curtains
Military vehicle and equipment insulation
Ventilation system fire dampers
Fire protection equipment and blankets
This basalt fabric is suitable for protective equipment production in welding and gas-cutting environments, where it serves as spatter protection and thermal barrier. Textile manufacturing applications include machine covers and heat shields for drying equipment. The chemical industry uses the fabric for filtration media, gaskets, and protective curtains in corrosive environments. Metallurgical applications include furnace curtains, hot work protection, and thermal insulation layers. The theater industry employs the fabric for stage fire curtains and flame-retardant backdrops. Military applications include vehicle thermal insulation and equipment protection. Ventilation systems use the fabric for fire damper sealing and duct insulation. Fire protection equipment such as fire blankets, welding curtains, and emergency thermal shelters are also fabricated from this material. The non-irritant properties make it suitable for personal protective equipment.
Common Questions and Solutions
How does basalt fabric compare to fiberglass fabric for protective equipment?
Basalt fabric causes less skin irritation than fiberglass due to the fiber surface characteristics. It offers higher temperature resistance (650°C vs 550°C continuous), better alkali resistance, and greater tensile strength. Basalt fabric also provides superior abrasion resistance. For welding and gas-cutting applications where worker contact is frequent, basalt is often preferred.
Can the fabric be washed or laundered?
Basalt fabric should not be washed or laundered. Washing can cause fiber damage and reduce mechanical strength. For protective equipment, spot cleaning with a damp cloth is acceptable. Replace the fabric if significantly contaminated with oil, grease, or other substances that may create fire hazards.
What surface coatings are available and what are their benefits?
Silicone coating (up to 260°C) improves abrasion resistance and water repellency. Vermiculite coating enhances thermal insulation and reduces fiber shedding. PTFE coating provides non-stick properties and chemical resistance. Aluminum coating reflects radiant heat. Silicone-aluminum composite provides both reflectivity and flexibility.
Is the fabric suitable for direct contact with food?
The uncoated basalt fabric is not certified for direct food contact. Coated versions may be suitable depending on the coating material. For food industry applications, use fabric with FDA-approved coatings such as PTFE or specific silicone formulations. Contact technical support for food-grade options.
How does the fabric perform in outdoor or UV-exposed environments?
Uncoated basalt fabric is resistant to UV degradation and maintains mechanical properties after prolonged outdoor exposure. However, the natural color may lighten over time. For aesthetic applications, specify UV-stabilized coatings. The fabric does not become brittle under UV exposure like some organic materials.
How should the fabric be cut and sewn for protective equipment production?
Cut the fabric using sharp scissors, a rotary cutter, or a CNC cutting machine. Sew using high-temperature thread such as Nomex, PTFE-coated fiber, or basalt thread. Use needle sizes 80-100 for thin fabric (0.3-0.8mm) and 100-120 for thick fabric (1.0-2.0mm). Stitch length: 4-6 stitches per centimeter. Use double-stitched seams for high-stress areas in protective equipment.
Installation and Handling Considerations
Wear gloves when handling basalt fabric. Although less irritating than fiberglass, the fibers can still cause mechanical skin irritation. Use an N95 respirator when cutting or if significant dust generation occurs.
Store basalt fabric in a dry, clean area. The fabric does not absorb significant moisture but should be kept dry to prevent surface contamination. Avoid storing in direct contact with concrete floors, as moisture from the floor may cause staining.
For welding protection applications, ensure the fabric completely covers the area to be protected. Secure edges using stainless steel binding or high-temperature tape to prevent fraying. Replace fabric that shows signs of weld spatter buildup or surface degradation.
When using the fabric as a fire curtain or barrier, install with 15-20% overlap at seams. Use stainless steel grommets at attachment points to prevent tearing. The fabric must be able to move freely to accommodate thermal expansion without tearing at fasteners.
For personal protective equipment such as welding blankets and aprons, ensure that the fabric thickness provides adequate thermal protection. Minimum 1.0mm thickness for welding protection; 1.5-2.0mm for heavy-duty applications. Inspect protective equipment before each use for damage or wear.
Inspect the fabric periodically for wear, fraying, or chemical damage. Replace sections that show significant degradation or where the fabric has been exposed to molten metal or chemical spills. For protective equipment used in welding environments, replace when the fabric shows signs of burn-through or when the surface becomes heavily coated with spatter.
