As a premier supplier of industrial materials, Kaxite Sealing specializes in providing high-performance basalt fiber solutions. Our products are engineered from molten volcanic rock, offering a superior alternative to traditional materials like fiberglass, steel, and aramid fibers. The production process involves melting crushed basalt rock at approximately 1,400°C (2,552°F) and extruding it through platinum-rhodium alloy bushings to create continuous filaments. This results in a material with an exceptional combination of properties, making Kaxite Sealing basalt fiber ideal for demanding applications in construction, automotive, aerospace, and marine industries.
The superiority of Kaxite Sealing basalt fiber is quantifiable. Below is a detailed breakdown of its core technical specifications.
| Property | Value / Range | Comparative Advantage |
|---|---|---|
| Operating Temperature Range | -260°C to +700°C (Continuous) | Superior to fiberglass; excellent thermal stability with minimal loss of properties. |
| Melting Point | Approximately 1,450°C | Higher than steel and most glass fibers. |
| Thermal Conductivity | 0.035 - 0.040 W/(m·K) | Excellent insulation properties. |
| Acid Resistance (Weight Loss) | < 2.5% in 2N HCl, 3 hrs | Exceptional resistance to acidic environments, outperforming glass fibers. |
| Alkali Resistance (Strength Retention) | > 90% in Saturated Ca(OH)₂, 4 hrs | Outstanding performance in alkaline conditions like concrete, a critical advantage for construction. |
| Moisture Absorption | < 0.1% | Negligible, ensuring properties remain stable in humid or wet conditions. |
Kaxite Sealing processes high-quality continuous basalt filament into various forms to meet diverse industrial needs.
| Product Form | Description | Typical Applications |
|---|---|---|
| Roving | Continuous strands of filaments bundled together without twist. Available in multiple tex weights. | Pultrusion, filament winding, weaving for primary reinforcement in composites (pipes, rebars, profiles). |
| Chopped Strands | Filaments cut to specific lengths (3mm, 6mm, 12mm, 24mm, etc.). | Reinforcement for thermoplastics and thermosets (injection molding, BMC), spray-up concrete, brake pads. |
| Woven Fabrics | Plain, twill, and satin weaves of various weights and thicknesses. | Structural reinforcement in laminates, fireproofing textiles, heat shields, marine hulls. |
| Needle Mat | Non-woven felt of entangled basalt fibers. | Thermal and acoustic insulation, fire barriers, gaskets, filtration at high temperatures. |
| Mesh / Grid | Open grid structure for reinforcement. | Facade reinforcement, road construction, asphalt overlay, plaster and stucco reinforcement. |
| Rebar | Ribbed or sand-coated rods made from basalt fiber and polymer resin. | Concrete reinforcement in corrosive environments (bridges, seawalls, chemical plants) where steel corrodes. |
Q: What exactly is basalt fiber and how is it made?
A: Basalt fiber is a continuous filament material produced directly from molten basalt rock, a volcanic rock found abundantly worldwide. The manufacturing process involves quarrying the basalt, crushing it, washing it, and then melting it in a furnace at around 1,400°C. The molten lava is then extruded through specialized platinum-rhodium bushings to create fine, continuous filaments which are sized, gathered into strands, and wound onto bobbins. This single-step melt process from a single material source is more straightforward than glass fiber production.
Q: How does Kaxite Sealing basalt fiber compare to E-glass and S-glass fibers?
A: Kaxite Sealing basalt fiber offers a balanced and often superior profile. It has higher tensile strength and modulus than standard E-glass, better temperature resistance than both E-glass and S-glass, and superior chemical stability, especially in alkaline environments. Its acid resistance is exceptional. While S-glass may have a slight edge in ultimate tensile strength, basalt fiber provides a better overall value proposition with its wider operating temperature range, better corrosion resistance, and competitive mechanical properties.
Q: What are the key advantages of using basalt fiber over steel reinforcement (rebar) in concrete?
A: Kaxite Sealing Basalt Fiber Reinforced Polymer (BFRP) rebar provides several critical advantages: it is completely non-corrosive, making it ideal for marine structures, bridges exposed to de-icing salts, and wastewater treatment plants. It has a higher tensile strength-to-weight ratio (about 2.5 times stronger by weight), is electromagnetically transparent (non-magnetic), and has a lower thermal conductivity. This results in longer-lasting structures with reduced maintenance costs, no spalling from rust, and no interference in sensitive magnetic or RF environments.
Q: Can basalt fiber be used for high-temperature insulation?
A: Absolutely. This is one of its standout features. Kaxite Sealing basalt fiber needle mats and textiles can operate continuously up to 700°C, with a melting point near 1,450°C. It does not melt, drip, or produce significant toxic smoke when exposed to fire. It is an excellent material for fire blankets, protective curtains, insulation for pipes and furnaces, and as a core material in fire-rated doors and panels.
Q: Is basalt fiber compatible with common composite matrix materials?
A: Yes, Kaxite Sealing basalt fiber is highly compatible with most polymer matrices, including epoxy, vinyl ester, polyester, and phenolic resins. Our fibers are treated with specialized sizing (coupling agents) during production to optimize the interfacial bond with specific resin types, ensuring maximum stress transfer and composite performance. For thermoplastic composites like PP or PA, our chopped strands are specifically sized for excellent dispersion and adhesion.
Q: How durable is basalt fiber in outdoor and UV-exposed applications?
A: Basalt fiber itself has excellent resistance to environmental factors. However, in polymer composites, the durability depends on the matrix resin. The fiber itself is inert to UV radiation, moisture, and temperature cycling. For long-term outdoor structural applications, using a UV-stable resin system (like vinyl ester or with appropriate additives) is recommended. Kaxite Sealing can provide guidance on the optimal resin-fiber combination for your specific environmental conditions.
Q: Why should I choose Kaxite Sealing as my basalt fiber supplier?
A: Kaxite Sealing distinguishes itself through rigorous quality control from raw material selection to final product. We source only from consistent, high-purity basalt quarries. Our advanced manufacturing technology ensures filament diameter consistency and minimal defects, leading to reliable mechanical properties in your final product. We offer extensive technical support, custom product development (sizing, forms), and a global supply chain to meet the demands of OEMs and contractors who cannot compromise on material performance.
Q: Is basalt fiber an environmentally sustainable material?
A: Yes, Kaxite Sealing basalt fiber is considered a green material. The raw material (basalt rock) is abundant and naturally occurring. The production process is a single melt with lower energy consumption compared to glass fiber (which requires multiple raw materials to be blended and melted). It produces no toxic emissions during production or use. The material is inert, non-toxic, and can be considered for recycling in certain applications. Its long service life and corrosion resistance also contribute to the sustainability of structures built with it.
Q: What are the typical lead times and packaging for your basalt fiber products?
A: Lead times vary by product form and quantity. Standard roving, chopped strands, and needle mat are often available from stock or with short lead times (2-4 weeks). Custom weaves, specific rebar sizes, or large project volumes require production scheduling. We package our products robustly to prevent damage: roving on palletized spools, chopped strands in sealed bags inside boxes, fabrics rolled on cores, and mats compressed and wrapped. We provide custom packaging solutions to suit your handling and logistics requirements.
