Sheet Moulding Compound (SMC) Use Excellent Dispersion Basalt Fiber Chopped Strands for Composite Materials

Sheet Moulding Compound (SMC) Use Excellent Dispersion Basalt Fiber Chopped Strands for Composite Materials

Our Basalt Fiber Chopped Strands are specifically designed for Sheet Moulding Compound (SMC) applications. Manufactured from high‑quality volcanic basalt rock and surface‑treated with a proprietary silane sizing system, these strands offer outstanding dispersion, consistent wet‑out, and excellent bonding with unsaturated polyester, vinyl ester, and other thermosetting resins commonly used in SMC formulations.

The chopped strands are precisely cut to controlled lengths, ensuring uniform distribution throughout the resin paste. This results in SMC compounds with superior mechanical properties, smoother surface finishes, and reliable part‑to‑part consistency – ideal for high‑volume compression moulding processes.

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Key Features & Benefits for SMC

Feature Benefit in SMC

Excellent dispersion Eliminates fibre agglomerates; ensures homogeneous reinforcement across the entire sheet, reducing rejects and improving structural integrity.

Optimised sizing system Compatible with unsaturated polyester and vinyl ester resins; promotes rapid wet‑out and strong interfacial adhesion for maximum load transfer.

Controlled fibre length Available in 6 mm, 12 mm, 25 mm (customisable) to match flow characteristics and mechanical requirements of SMC moulding.

High tensile strength (>1200 MPa) Delivers superior flexural and impact strength to finished SMC parts, allowing thinner, lighter designs without compromising performance.

Excellent thermal stability Withstands moulding temperatures and post‑cure processes; retains properties from -269°C to 700°C.

Low moisture absorption Minimises void formation and ensures long‑term dimensional stability in humid environments.

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Technical Specifications (Typical Data)

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Application in Sheet Moulding Compound (SMC)

In SMC production, our basalt chopped strands are mixed into a resin paste along with fillers, catalysts, and other additives. The combination of:

· Controlled length – ensures easy flow during mould filling.

· Excellent dispersion – prevents fibre bundles that cause stress concentrations.

· High modulus – increases the stiffness and dimensional stability of moulded parts.

Typical SMC end‑products reinforced with these strands include:

· Automotive – exterior body panels, engine covers, structural components.

· Construction – electrical enclosures, sanitary ware, roofing panels.

· Industrial – pump housings, fan blades, protective covers.

· Transportation – train interiors, truck fairings.

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Why Choose Our Basalt Chopped Strands for SMC?

· Tailored for SMC – developed specifically to meet the rheological and mechanical demands of SMC compounding.

· Superior dispersion technology – reduces mixing time and energy consumption, while improving mould fill and surface quality.

· Eco‑friendly – 100% natural basalt, no boron or other additives, non‑toxic, and recyclable.

· Consistent quality – manufactured under strict ISO 9001 controls, with every batch tested for dispersion and mechanical performance.

· Technical support – our application engineers can assist with formulation optimisation and moulding parameters.

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Packaging & Handling

· Available in heat‑sealed bags, carton boxes, or big bags (depending on quantity).

· Store in a dry, cool place away from direct sunlight.

· Recommended shelf life: 12 months under proper storage conditions.

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Summary

Our Excellent Dispersion Basalt Fiber Chopped Strands offer a high‑performance, cost‑effective alternative to glass or carbon fibres in SMC applications. With optimised sizing, precise length control, and proven dispersion performance, they enable manufacturers to produce lighter, stronger, and more durable composite parts with excellent surface aesthetics.

For custom lengths, sizing formulations, or trial samples, please contact our technical sales team.

 
General Specifications