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Sepiolite Fiber – The High-Performance Natural Mineral Fiber

Time : 2026-04-28

Sepiolite fiber is a kind of natural hydrated magnesium silicate mineral fiber with a unique fibrous structure. As a high-performance inorganic functional fiber widely used in construction, coatings, sealing, friction materials and environmental protection fields, it has core advantages such as environmental protection, heat resistance, corrosion resistance, reinforcement and high cost-performance. Main types include: raw sepiolite fiber, purified sepiolite fiber, and surface-modified sepiolite fiber.

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1. Meticulous craftsmanship: Two production paths ensure controllable and traceable quality

  • Natural mineral processing

Purified and processed from natural sepiolite ore through crushing, drying, grinding, impurity removal and screening. It retains natural fibrous structure, low cost, suitable for general scenarios with high cost-performance requirements (such as ordinary coatings, building materials, friction materials filling).

  • Chemical purification and modification

Adopting precise processes such as high-purity purification, activation treatment, surface modification and fiber grading. Raw materials can utilize ore sorting tailings to realize resource recycling, in line with green production trends. Modified products have high purity, complete fiber structure, strong dispersibility and stable performance, meeting the stringent requirements of high-end coatings, sealing materials and food-contact materials.

2. Core Features: Six Major Advantages Underpin "Abundant Value"

  • Environmentally friendly and non-toxic, compliant and worry-free

Free of heavy metals and harmful substances, complies with EU REACH, RoHS and Chinese national standards. Non-radioactive, non-polluting, suitable for food packaging, interior building materials, children’s products and home decoration.

  • Weather-resistant and lightfast, long-lasting and stable

Excellent UV resistance, high temperature resistance and aging resistance. No fading, pulverization or embrittlement after long-term outdoor use, stable in high temperature, humidity and rainy environments, making it a “long-life fiber” for building exterior and industrial facilities.

  • Acid and alkali resistant and corrosion resistant

Outstanding alkali resistance, perfectly compatible with cement and latex systems; stable to weak acids and industrial chemical corrosion, no deterioration, widely used in anti-corrosion coatings and sealing materials.

  • Strong reinforcement and excellent thixotropy

Natural fiber structure improves toughness, crack resistance and impact resistance; good thixotropy, anti-sagging and anti-sedimentation, small dosage can achieve full effect, reduce material cost.

  • Good dispersibility and convenient construction

Fine fiber, good compatibility with water-based and solvent-based systems, no agglomeration. Suitable for coatings, mortar, plastics, rubber and sealing materials, simple processing and construction.

  • Batch stability and controllable quality

Formal manufacturers adopt ISO 9001 quality management system, ensuring consistent length, purity and dispersion performance in each batch, avoiding production and construction losses.

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3. Empowering all industries: From basic building materials to high-end manufacturing, covering all sectors

  • Building Materials Industry

Coatings, putty, mortar: anti-cracking, anti-sagging, thixotropic enhancement;Thermal insulation materials: high temperature resistance, heat insulation, fireproof;Road and infrastructure: improve durability and anti-aging performance.

  • Plastics and Rubber Industry

Sealing strips, gaskets, rubber products: improve heat resistance, oil resistance and dimensional stability;Plastic filling: enhance rigidity and flame retardant performance, reduce cost.

  • Industrial Coatings and Friction Materials

Anti-corrosion coatings, marine coatings: improve adhesion and weather resistance;Brake pads, friction plates: high temperature resistance, wear resistance, stable friction coefficient;Filter materials, environmental protection products: strong adsorption, purification and filtration.

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