English
Español
عربى
Product Introduction
This basalt fiber sleeve is manufactured from high-quality basalt fibers that undergo processing and surface treatment. Basalt fiber is recognized as a material with applications across multiple industrial sectors. The sleeve provides resistance to extreme temperatures, acids, alkalis, and corrosive environments. It also exhibits moisture absorption characteristics, insulation properties, high-temperature filtration performance, and radiation resistance. The operating temperature range extends from -260°C to +1200°C. The sleeve is applicable in aerospace, aviation, military, high-speed rail, and automotive industries, providing thermal protection for cables, hoses, and piping systems in demanding environments.
Core Advantages
Extreme Temperature Range
Operating temperature range from -260°C to +1200°C, suitable for cryogenic and ultra-high-temperature applications.
Chemical and Corrosion Resistance
Resistant to acids, alkalis, and corrosive chemicals. Maintains structural integrity in chemically aggressive environments.
Radiation Resistance
The sleeve withstands radiation exposure, making it suitable for nuclear and aerospace applications.
High-Temperature Filtration Performance
The fiber structure provides effective filtration of particulates in high-temperature gas streams.
Electrical Insulation Properties
Basalt fiber offers dielectric insulation, suitable for protecting electrical components in high-temperature zones.
Moisture Absorption Management
The fiber exhibits controlled moisture absorption characteristics, reducing condensation-related issues in cryogenic applications.
Product Features
Base material High-quality basalt fiber processed from natural volcanic rock. Continuous operating temperature: -260°C to +650°C; intermittent: up to 1200°C.
Fiber properties Filament diameter: 6-12 micrometers. Density: 2.65-2.80 g/cm³. Tensile strength: 3000-4800 MPa.
Chemical resistance Resistant to most acids (except HF), alkalis, salt solutions, and organic solvents. Alkali resistance is superior to E-glass fiber.
Thermal insulation performance Thermal conductivity: 0.031-0.038 W/m·K at 500°C. Provides effective insulation across the temperature range.
Surface treatment Surface-treated to enhance fiber cohesion and reduce dust generation during handling. Custom coatings available upon request.
Available inner diameters 8mm to 120mm. Standard lengths: 10m, 20m, 30m rolls. Custom diameters and lengths available.
Technical Specifications
| Parameter | Specification |
|---|---|
| Continuous operating temperature | -260°C to +650°C (cryogenic to high temperature) |
| Intermittent peak temperature | Up to 1200°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 |
| 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 (at 20°C, 1MHz) | 6.0-6.5 |
| Available inner diameters | 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 80mm, 100mm, 120mm |
| Standard length | 10m, 20m, 30m rolls |
| Color | Natural dark gray to brown (varies by source rock) |
Application Scenarios
Aerospace thermal protection systems
Aviation wiring and cable insulation
Military equipment and vehicle systems
High-speed rail electrical and thermal management
Automotive exhaust and engine compartment
Cryogenic insulation (LNG, liquid nitrogen)
High-temperature gas filtration
Nuclear and radiation environments
This basalt fiber sleeve is suitable for demanding applications across multiple industries. In aerospace and aviation, the sleeve provides thermal protection for wiring harnesses in engine nacelles and high-temperature zones near exhaust systems. Military applications include protection of vehicle electrical systems in extreme environments. High-speed rail systems use the sleeve for thermal management of braking resistors and traction equipment. Automotive applications include turbocharger heat shielding, exhaust system insulation, and engine compartment cable protection. The sleeve's cryogenic capability makes it suitable for LNG (liquefied natural gas) transfer lines and liquid nitrogen handling equipment. The radiation resistance supports nuclear facility and space applications.
Common Questions and Solutions
What is the difference between basalt fiber and glass fiber?
Basalt fiber is manufactured from natural volcanic rock without added materials, while glass fiber requires formulated raw materials. Basalt offers higher temperature resistance (1200°C vs 550°C for E-glass), better chemical resistance (especially to alkalis), higher tensile strength, and superior radiation resistance. Basalt fiber also has lower thermal conductivity and a wider operating temperature range.
Does the sleeve maintain flexibility at cryogenic temperatures?
Yes. Basalt fiber retains flexibility at cryogenic temperatures down to -260°C, unlike some organic materials that become brittle. The sleeve can be installed and handled at low temperatures without cracking. However, the fiber is more rigid than organic materials; avoid sharp bends below -100°C.
How does the sleeve perform in high-alkali environments?
Basalt fiber exhibits superior alkali resistance compared to E-glass fiber. The sleeve maintains structural integrity in cement and concrete environments and in applications where alkaline solutions are present. For continuous immersion in concentrated alkalis above pH 12, consult technical specifications for specific durability data.
What is the radiation resistance of the basalt fiber sleeve?
Basalt fiber demonstrates high resistance to gamma and neutron radiation. The sleeve maintains mechanical and thermal properties after exposure to total doses exceeding 10⁸ rad. This makes it suitable for nuclear power plant containment areas, spent fuel handling, and space applications where radiation exposure is a concern.
Can the sleeve be used for high-temperature gas filtration?
Yes. The woven structure provides effective particle filtration at temperatures up to 1200°C (intermittent). The sleeve captures particulates while allowing gas flow. For filtration applications, specify open-weave or tight-weave versions based on required particle retention size. The sleeve resists thermal degradation in combustion gas environments.
How should the sleeve be cut to length?
Cut the sleeve using sharp scissors, a utility knife, or shears. Basalt fiber is harder than glass fiber; carbide-bladed tools are recommended for production cutting. Seal cut ends with high-temperature silicone or a basalt fiber-compatible adhesive to prevent fraying. For high-temperature applications above 600°C, use stainless steel wire to secure the ends rather than adhesives.
Installation and Handling Considerations
Wear gloves, long sleeves, and safety glasses when handling basalt fiber sleeves. The fibers can cause mechanical skin irritation similar to glass fiber. Use an N95 respirator when cutting or if significant dust generation occurs.
Measure the outer diameter of the component to be protected. Select a sleeve with inner diameter 15-25% larger than the component diameter. Basalt fiber has lower stretch than organic materials; oversizing simplifies installation.
For cryogenic applications (-100°C to -260°C), pre-warm the sleeve to room temperature before installation if possible. The fiber is more flexible at ambient temperature. Use stainless steel tie wraps rated for low temperatures for secure attachment.
For high-temperature applications above 800°C, use Inconel or stainless steel wire to secure the sleeve. Standard stainless steel tie wraps may oxidize and fail at these temperatures. Space securing bands every 20-30cm along the sleeve length.
Avoid bending the sleeve to a radius less than 4 times the sleeve diameter. Basalt fiber is more rigid than E-glass; tight bends may cause fiber breakage. Use multiple shorter sections for applications requiring tight radius turns.
Inspect the sleeve periodically for visible damage such as fraying, cuts, or discoloration. Replace the sleeve if the fiber structure is compromised. For cryogenic service, inspect for ice formation on the sleeve surface, which may indicate moisture ingress through damaged areas.
