Bulk Molding Composite (BMC) Use Basalt Fiber Chopped Strands Coated with Silane Sizing

Bulk Molding Composite (BMC) Use Basalt Fiber Chopped Strands Coated with Silane Sizing

Basalt Fiber Chopped Strands are short with cut lengths of continuous basalt fiber, typically ranging from 3 mm to 100 mm. The raw material is natural volcanic rock (basalt), which is melted at around 1450–1500°C and extruded through platinum‑rhodium bushings to form continuous filaments. After cutting, the strands retain all the outstanding properties of continuous basalt fiber, making them a high‑performance, eco‑friendly inorganic non‑metallic material.

Technical Specifications & Datasheet

The following table lists typical parameters. Actual values may vary depending on the specific grades (e.g., those optimized for asphalt or concrete).

Key Advantages

· Excellent Mechanical Properties – High tensile strength and modulus significantly improve the toughness, crack resistance, and fatigue resistance of composite materials.

· Wide Temperature Range – Serviceable from ‑269°C to 700°C, offering both high‑temperature stability and low‑temperature crack prevention.

· Superior Chemical Resistance – Resistant to acids, alkalis, salt water, and seawater; performs stably in alkaline environments such as concrete.

· Good Processability – Surface treated with silane or other sizing agents, ensuring good compatibility with various resin systems, including epoxy, vinyl ester, polypropylene (PP), and polyester.

· Eco‑friendly & Functional – 100% natural, non‑toxic, and environmentally friendly; additionally offers electrical insulation, antistatic properties, sound absorption, and waterproofness.

Application Fields

· Construction & Civil Engineering – Used to reinforce cement concrete and asphalt concrete. Enhances the toughness, impermeability, thermal deformation resistance, and fatigue performance of roads, bridges, dams, tunnels, and other infrastructure.

· Composite Materials – Acts as a reinforcing filler in sheet molding compounds (SMC), bulk molding compounds (BMC), and other composite systems.

· Transportation & Industrial – Used for reinforcing automotive, railway, and marine components; also applied in friction materials, high‑temperature filter fabrics, and thermal insulation materials.

 
General Specifications

 
Increasing performance of friction material:
 
Basalt fiber is an eco-friendly, high-performance reinforcement for friction materials (brake pads, clutches), offering superior wear resistance, thermal stability, and low noise compared to asbestos or steel. Its high-temperature resistance and stable friction coefficient make it an ideal, sustainable alternative for enhancing frictional performance and durability in automotive applications.
 
Key Advantages in Friction Materials:
High Thermal Stability: Basalt fibers maintain structural integrity at high temperatures, reducing thermal fade in braking systems.
Superior Wear Resistance: Studies show basalt fiber-reinforced materials offer better wear resistance than asbestos, steel, and glass fibers.
Improved Frictional Stability: Basalt fiber reduces friction fluctuations, providing consistent performance.
Environmental Friendly: As a natural volcanic rock product, it provides a green, non-toxic, and non-corrosive alternative to traditional fiber reinforcement.
Enhanced Mechanical Strength: It increases the tensile strength and modulus of organic brake pads.
 
Applications and Performance:
Brake Pads: Used to improve friction stability and reduce noise.
Clutch Facings: Provides durability under high-stress conditions.
Optimal Properties: Research indicates that using 10 mm length fiber at appropriate content levels yields the best reinforcement for friction composites.
 
Basalt fiber's ability to withstand high temperatures (up to 900 ℃ in some cases) without losing strength ensures it is highly effective in demanding braking environments.
 
 
Concrete improvement
 
Compared with different types of reinforcing fibers, Pasia Basalt fibers have achieved the best overall technical and economic benefits in fiber-reinforced concrete and maintain a leading position among natural mineral fibers. They are made from short-cut basalt fibers produced by our company. Tests conducted by international research centers and the application effects of the products in actual projects have both confirmed this.
 
Basalt chopped strands are essential products for:
Eliminate large concrete surface cracks;
Make reinforced concrete structures achieve stability and toughness when bearing different loads;
Reduce the backflow during shotcrete application;
Improve the wear resistance of the concrete surface;
Enhance the frost resistance and waterproof performance;
And accelerate the drying process of large concrete blocks.