Industrial sepiolite fiber (a natural hydrated magnesium silicate mineral fiber) is derived from high-purity sepiolite ore through purification, activation, grinding, and surface modification. Unlike common synthetic fibers and mineral powders, this fiber features a unique needle-like and fibrous crystal structure, making it widely used in composite reinforcement, thermal insulation, friction materials, sealing products, and coatings to deliver outstanding mechanical support, stability, and functional performance.
1. Material Composition and Physical Structure
Our sepiolite fiber is produced via a precision processing flow including ore selection, water washing, high-temperature activation, and surface modification, ensuring uniform fiber length, high purity, and stable chemical properties.
- Morphology & Structure: Slender needle-like and fibrous morphology with a large specific surface area and microporous structure, forming an interwoven network in matrices.
- Purity & Whiteness: High-grade ore refined to low impurity content, with customizable whiteness to match different application color requirements.
- Thermal Stability: Inert crystal structure that maintains structural integrity under high temperatures without decomposition or shrinkage.
- Surface Activity: Modified surface to improve compatibility and dispersion with resins, rubbers, plastics, and binders.
2. Technical Performance Indicators (QC Standards)
To meet international export requirements, especially for DDP/CIF shipments to high-end industrial markets, our sepiolite fiber complies with the following strict indicators:
- Fiber Length: 0.05–3 mm (customizable grades for reinforcement, filling, and thickening).
- Whiteness: ≥70% (high-whiteness grade available up to ≥85%).
- Moisture Content: ≤2.0% (low-humidity treatment for long-term storage).
- Thermal Resistance: Stable up to 350°C, suitable for high-temperature processing environments.
- Chemical Resistance: Inert to alkalis, weak acids, oils, and organic solvents, with excellent corrosion resistance.
- Dispersibility: Uniform dispersion in aqueous and oily systems without agglomeration or bridging.
3. Selection Guide for Global Distributors
- Standard Reinforcement Grades: Universal fiber lengths (0.1–1 mm) for coatings, plastics, and rubber composites, supporting fast inventory turnover.
- Special Functional Grades: High-purity, high-whiteness, or surface-modified fibers for friction materials, sealing gaskets, and thermal insulation products.
- Packaging: 20 kg multi-layer kraft paper bags with moisture-proof PE liners to preserve product performance during long-distance ocean transportation.
