Steel fiber manufacturer

Macro synthetic fiber is an innovative material gradually replacing traditional steel fibers in the field of concrete reinforcement. It is a high-performance synthetic fiber used to enhance the properties of construction materials such as concrete and mortar. Unlike traditional steel or natural fibers, it is made from polymer materials like polypropylene (PP), polyester (PET), or polyvinyl alcohol (PVA). Through specialized processing, these fibers are engineered with high tensile strength, corrosion resistance, and a three-dimensional reinforcing structure. With diameters typically ranging from 0.1mm to 1.5mm and customizable lengths (e.g., 30mm to 65mm), macro synthetic fibers significantly improve concrete’s crack resistance, impact resistance, and durability. As a leading synthetic fiber supplier in China, Daye leverages advanced manufacturing and R&D expertise to deliver high-performance macro synthetic fiber solutions for global engineering projects.

I. What is Macro Synthetic Fiber?

Macro synthetic fiber is a reinforcement-grade synthetic fiber primarily made from polypropylene (PP) through specialized processing. These fibers are typically 30–60mm long and feature an embossed surface to enhance bonding with concrete matrices. Compared to traditional steel fibers, macro synthetic fibers are lightweight, corrosion-resistant, and easy to disperse. They are widely used in industrial flooring, bridge and tunnel construction, mining engineering, and more.

The core advantage of macro synthetic fibers lies in their combination of lightweight properties (density ≈0.91g/cm³) and high mechanical performance. For example, Daye’s macro synthetic fibers achieve tensile strengths exceeding 550 MPa and elastic moduli over 9,000 MPa, while maintaining resistance to acidic and alkaline environments, making them ideal for complex engineering scenarios.

II. Core Materials and Production Process

Macro synthetic fibers are primarily made from virgin polypropylene, formed through melt extrusion, stretching, and embossing processes. The embossed design increases bonding strength with concrete, improves dispersion, and enhances reinforcement effects. During production, fibers undergo surface treatments to ensure uniform distribution in concrete and prevent clumping. Daye’s superior performance stems from dual innovations in materials and processes:

Material Properties

Raw Material: High-purity polypropylene with a density of 0.91g/cm³, lightweight and non-absorbent.

Tensile Strength: ≥400 MPa, effectively dispersing internal stress in concrete.

Corrosion Resistance: Highly resistant to acidic and alkaline environments, suitable for harsh applications like marine engineering and chemical plants.

Production Process

Embossing Technology: Surface embossing enhances mechanical interlock with concrete.

Water-Soluble Packaging: Fibers are packaged in 5kg/box units with water-soluble film, allowing direct addition to mixers for rapid dissolution and eliminating uneven manual dispersion.

III. Five Core Advantages of Macro Synthetic Fibers

Compared to traditional reinforcement materials, Daye’s macro synthetic fibers offer unique advantages:

Superior Crack Resistance

Reduces plastic shrinkage and thermal stress cracks, increasing concrete toughness by 30%+ and extending structural lifespan.

Cost Efficiency

Requires only 3–10kg/m³ (vs. 25–40kg/m³ for steel fibers), reducing overall costs by 40%–60%.

Easy and Efficient Construction

Directly added to mixers without specialized equipment, saving labor and time—ideal for shotcrete and complex processes.

Eco-Friendly and Weather-Resistant

100% recyclable polypropylene material with UV and freeze-thaw resistance, suitable for extreme temperatures (-40°C to 120°C).

Enhanced Safety

Non-magnetic, non-conductive fibers eliminate injury risks during handling.

IV. Key Applications in Engineering

Concrete Reinforcement

Widely used in concrete slabs, precast components (e.g., septic tanks, walls), and shotcrete (e.g., tunnel linings, slope stabilization). Their 3D network structure inhibits plastic shrinkage cracks, reduces thermal cracks by 50%+, and improves fatigue resistance.

Industrial Flooring and Warehouses

Replaces traditional steel mesh in large-scale flooring for logistics centers, cutting costs and accelerating construction.

Hydraulic and Marine Engineering

Ideal for docks, desalination plants, and high-salinity environments due to exceptional corrosion resistance.

V. Advantages Over Traditional Reinforcement Materials

Cost-Effectiveness

Lower material costs than steel fibers, with no anti-corrosion treatments required. Overall costs reduced by 50% per unit volume.

Construction Simplicity

Direct mixer integration eliminates complex installation processes.

Performance Benefits

Corrosion Resistance: Polypropylene resists chloride ion erosion in humid conditions.

Lightweight: Density is 1/8th of steel, reducing structural load.

Impact Resistance: Fiber flexibility absorbs energy, minimizing concrete spalling.

VI. Why Choose Daye Macro Synthetic Fiber?

As a benchmark in China’s synthetic fiber industry, Daye empowers global clients with three core strengths:

End-to-End Quality Control: Full-process monitoring from raw materials to packaging, compliant with ISO 9001 standards.

Customization: Offers fibers in lengths (12–60mm) and colors (transparent, gray-white).

Global Delivery: Supports bulk exports via 20ft (12,800kg) and 40ft (25,800kg) containers, with lead times ≤15 days.

Conclusion

Macro synthetic fiber is reshaping the future of concrete reinforcement technology. Through continuous innovation, Daye delivers lighter, stronger, and more economical solutions for engineering challenges. For technical specifications or customized services, contact Daye today.