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Product Introduction
This basalt wrap tape is manufactured from basalt continuous fiber produced by melting basalt stone at 1450-1500°C and drawing through platinum-rhodium alloy bushings. The tape is woven from processed and surface-treated high-quality basalt continuous fibers. The product provides high-temperature resistance, corrosion resistance, sound absorption, thermal insulation, heat retention, and radiation resistance. It is widely used in aviation, military industry, high-speed railway, automotive, and other fields. The continuous working temperature is 700°C.
Core Advantages
Natural Volcanic Stone Origin
Manufactured from basalt stone melted at 1450-1500°C. Natural material composition with consistent fiber properties.
700°C Continuous Operation
Continuous working temperature of 700°C. Suitable for high-temperature insulation and protection applications.
Corrosion and Chemical Resistance
Resistant to acids, alkalis, and corrosive environments. Maintains structural integrity in chemically aggressive conditions.
Sound Absorption and Thermal Insulation
Provides acoustic sound absorption and thermal insulation in a single material, reducing noise and heat transfer.
Radiation Resistance
The basalt fiber construction withstands radiation exposure, suitable for aerospace and military applications.
Platinum-Rhodium Drawing Process
Continuous fiber produced using platinum-rhodium alloy bushing for consistent fiber diameter and quality.
Product Features
Base material Basalt continuous fiber produced from melted basalt stone. Continuous temperature rating: 700°C. Intermittent peak: 850°C.
Fiber properties Fiber diameter: 6-12 micrometers. Density: 2.65-2.80 g/cm³. Tensile strength: 3000-4800 MPa.
Available widths 20mm, 25mm, 30mm, 40mm, 50mm, 75mm, 100mm. Standard roll lengths: 10m, 20m, 30m, 50m.
Available thicknesses 1.5mm, 2.0mm, 2.5mm, 3.0mm. Custom thicknesses available.
Acoustic properties The fiber structure provides sound absorption, reducing noise transmission in automotive and industrial applications.
Flame resistance Non-combustible. Does not melt or drip. Self-extinguishing when removed from flame source.
Technical Specifications
| Parameter | Specification |
|---|---|
| Continuous operating temperature | 700°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), >600 N per 25mm width (tape) |
| Elastic modulus | 85-95 GPa |
| Thermal conductivity at 500°C | 0.031-0.038 W/m·K |
| Available widths | 20mm, 25mm, 30mm, 40mm, 50mm, 75mm, 100mm |
| Available thicknesses | 1.5mm, 2.0mm, 2.5mm, 3.0mm |
| Standard roll length | 10m, 20m, 30m, 50m rolls |
| Color | Natural dark gray to brown (varies by source rock) |
Application Scenarios
Aviation engine compartment insulation
Military equipment thermal protection
High-speed railway brake system insulation
Automotive exhaust system wrapping
Industrial pipeline thermal insulation
Sound absorption and noise reduction
Radiation shielding applications
High-temperature cable protection
This basalt wrap tape is suitable for aviation applications including engine compartment wiring harness protection and thermal insulation around hot sections. Military equipment uses the tape for thermal protection of vehicle exhaust systems, weapon systems, and sensitive electronics. High-speed railway applications include brake system insulation, traction motor thermal barriers, and under-carriage heat shielding. Automotive exhaust system wrapping reduces under-hood temperatures and improves exhaust scavenging. Industrial pipeline thermal insulation for steam lines, hot oil pipes, and chemical processing equipment benefits from the tape's corrosion resistance and high-temperature stability. The tape provides sound absorption in noisy environments such as generator rooms, compressor stations, and industrial machinery enclosures. Radiation shielding applications leverage the basalt fiber's resistance to gamma and neutron radiation for nuclear and space applications.
Common Questions and Solutions
How does basalt wrap tape compare to fiberglass tape?
Basalt tape offers higher temperature resistance (700°C vs 550°C continuous), better alkali resistance, higher tensile strength (3000-4800 MPa vs 1500-2500 MPa), and superior radiation resistance. Basalt fiber also causes less skin irritation during handling and maintains better flexibility after thermal cycling.
Does the tape provide sound absorption?
Yes. The basalt fiber structure provides effective sound absorption, particularly in mid to high frequency ranges. The tape can reduce noise transmission by 5-15 dB depending on thickness and application. For maximum acoustic performance, apply the tape with 50% overlap and consider multiple layers for high-noise environments.
What is the radiation resistance of basalt tape?
Basalt fiber demonstrates high resistance to gamma and neutron radiation, maintaining mechanical and thermal properties after exposure to total doses exceeding 10⁸ rad. This makes the tape suitable for nuclear power plant applications, spent fuel handling, and aerospace components exposed to space radiation.
How should the tape be applied for automotive exhaust wrapping?
Start wrapping at the exhaust manifold or turbocharger outlet, overlapping each turn by 25-50% of the tape width. Soak the tape in water for 5-10 minutes before installation for better conformability. Use stainless steel tie wraps spaced every 10-15cm to secure the tape. Avoid covering oxygen sensor bungs or other critical components.
Is the tape resistant to oils and chemicals?
Basalt fiber resists most mineral oils, hydraulic fluids, fuels, and organic solvents. However, prolonged oil saturation may affect the surface treatment and reduce flexibility. For oil-soaked environments, consider using coated basalt tape or secure the tape with stainless steel tie wraps rather than relying on surface properties.
How should the tape be cut to length?
Cut the tape using sharp scissors or a utility knife. For heavy-duty applications, use shears. Basalt fiber is harder than glass fiber; carbide-bladed tools are recommended for production cutting. Seal cut ends with high-temperature silicone or wrap with aluminum foil tape to prevent fraying.
Installation and Handling Considerations
Wear gloves, long sleeves, and safety glasses when handling basalt tape. Although less irritating than glass fiber, the fibers can still cause mechanical skin irritation. Use an N95 respirator when cutting large quantities.
For exhaust wrapping applications, soak the tape in water for 5-10 minutes before installation. The wet tape is more flexible and can be wrapped tighter. As the tape dries, it shrinks and tightens around the pipe. Do not soak tape used for electrical insulation applications.
When wrapping high-speed railway brake system components, ensure the tape does not interfere with moving parts. Secure ends with high-temperature stainless steel tie wraps and inspect after initial operation for loosening.
For aviation and military applications, use stainless steel or Inconel wire for securing the tape. Plastic zip ties or adhesive tapes are not suitable for high-temperature or high-vibration environments.
Store the tape in a dry, clean area. Basalt fiber does not absorb significant moisture but should be kept dry to prevent contamination. Avoid storing in direct contact with concrete floors.
Inspect the tape periodically for damage, fraying, or loosening. Replace sections that show significant wear or where the tape has become loose. For automotive exhaust applications, inspect after the first 500km of driving and retighten tie wraps as needed. For aviation applications, follow the maintenance schedule specified for the equipment.
