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Wet Ground Mica Powder
Mica
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Wet Ground Mica Powder

Wet ground mica powder is a high-performance functional mineral filler produced by grinding selected mica raw material in a water-based grinding system. Compared with dry ground mica powder, wet ground mica powder usually has a smoother surface, higher aspect ratio, better flake integrity, narrower particle distribution, and improved dispersion performance. These characteristics make it especially suitable for coating systems, high-grade paints, engineering plastics, rubber compounds, sealants, insulation materials, and other applications where barrier performance, surface smoothness, and functional reinforcement are required.

The core value of wet ground mica powder comes from its natural lamellar structure. Each mica particle is a thin flake that can overlap with other flakes in a coating film, polymer matrix, or composite material. This overlapping structure helps extend the path of water, oxygen, chemicals, and other corrosive media. As a result, wet ground mica can improve anti-corrosion performance, weather resistance, crack resistance, dimensional stability, and mechanical reinforcement in many industrial formulations.

WANCHENG MINERAL supplies wet ground mica powder for international industrial customers who need consistent quality, stable bulk supply, technical communication, and flexible packaging options. Our product can be provided in different particle sizes according to customer requirements. It is suitable for manufacturers, distributors, formulators, and industrial users looking for reliable mica-based functional filler solutions.

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    Technical Specifications

    Wet ground mica powder can be customized according to application requirements. Coating manufacturers may focus on particle size, aspect ratio, oil absorption, whiteness, and dispersion. Plastic and rubber customers may pay more attention to reinforcement, thermal stability, and compatibility with resins or elastomers. Cosmetic and personal care applications require additional attention to purity, heavy metal control, microbiological safety, and local regulatory compliance. WANCHENG MINERAL can communicate with customers according to the final application and recommend suitable grades.

    Common particle sizes for wet ground mica powder include 325 mesh, 600 mesh, 800 mesh, 1250 mesh, 1500 mesh, 2000 mesh, and customized fine grades. The actual specification should be selected based on formulation performance, surface appearance, processing method, and cost target. Fine grades are generally used for smooth coatings and high-end surface systems, while medium grades are suitable for functional fillers in coatings, plastics, rubber, and construction materials.

    Main Chemical Composition Table
    Main Technical Parameters Table

    Chemical Component

    Typical Content

    Description
    SiO2 45% - 50% Main silicate component
    Al2O3 30% - 38% Main alumina component
    K2O 8% - 11% Typical mica alkali component
    Fe2O3 0.5% - 3% Affects color and mineral characteristics
    MgO 0.5% - 2% Minor component
    Na2O <=1.5% Minor alkali component
    CaO <=1.5% Minor component
    Loss on Ignition 2% - 5% Varies by raw material and processing

    Item

    Typical Value
    Product Name Wet Ground Mica Powder
    Material Type Natural mica, mainly muscovite mica
    Appearance White to off-white fine flake powder
    Processing Method Wet grinding
    Common Mesh Size 325 mesh, 600 mesh, 800 mesh, 1250 mesh, 1500 mesh, 2000 mesh, customized
    Particle Shape Flake structure
    Whiteness 60% - 90% or customized
    Moisture <=1.0% typical
    Specific Gravity Approx. 2.7 - 2.9 g/cm3
    Bulk Density Approx. 0.20–0.35 g/cm³
    Oil Absorption Customized according to grade
    pH Value 6 - 9 typical
    Heat Resistance Good
    Electrical Insulation Good
    Packaging 25kg bags, jumbo bags, pallet packaging, OEM

    Note: The chemical composition and technical parameters above are typical reference values for wet ground mica powder. Final values may vary depending on raw material source, production batch, particle size, processing method, and customer testing standard. WANCHENG MINERAL can provide samples and batch information for customer evaluation.

    Advantages
    Packaging
    Production Process

    Wet ground mica powder from WANCHENG MINERAL offers several advantages for industrial formulations. The first advantage is high aspect ratio. Because wet grinding better protects the natural flake structure of mica, the particles can provide stronger barrier performance and reinforcement than many ordinary fillers. This is especially valuable in coatings, plastics, and rubber.

    The second advantage is smooth surface and good dispersion. Wet ground mica powder usually has cleaner particle surfaces and better flake integrity, helping it disperse more evenly in coating and polymer systems. Better dispersion can support stable product performance and improved final surface quality.

    The third advantage is excellent barrier performance. In coatings, overlapping mica flakes help reduce water penetration and chemical corrosion. In polymer materials, the flake structure helps improve dimensional stability and may contribute to reduced shrinkage and improved stiffness.

    Additional advantages include chemical stability, heat resistance, electrical insulation, low thermal conductivity, and natural mineral safety when properly selected for the target application. WANCHENG MINERAL can support customers with particle size selection, packaging options, sample testing, and export supply.

    WANCHENG MINERAL provides flexible packaging options for wet ground mica powder. Common packaging includes 25kg PP woven bags, 25kg kraft paper bags, valve bags, jumbo bags, palletized packaging, and OEM customized packaging. Packaging can be selected according to product fineness, customer handling equipment, warehouse conditions, and export destination.

    Because fine mica powder may absorb moisture or generate dust during handling, sealed and moisture-proof packaging is recommended. For international shipment, palletized packaging can improve loading efficiency and reduce bag damage. Customized labels, batch numbers, product names, and customer brand information can also be arranged according to order requirements.

    The production of wet ground mica powder requires careful raw material selection and controlled grinding conditions. WANCHENG MINERAL follows a quality-oriented process to help ensure stable particle size, clean appearance, and consistent product performance.

    1. Raw Mica Selection: Selected mica raw material is inspected for color, purity, flake structure, impurity level, and suitability for wet grinding.

    2. Washing and Pre-treatment: The raw material is cleaned to reduce impurities and prepare it for wet grinding.

    3. Wet Grinding: The mica is ground in a water-based system under controlled conditions to protect flake structure and obtain the required fineness.

    4. Classification: The slurry is classified to achieve target particle size distribution.

    5. Dehydration and Drying: Water is removed and the product is dried under controlled conditions.

    6. Screening and Quality Inspection: The dried powder is screened and tested for particle size, moisture, whiteness, appearance, and other customer-required parameters.

    7. Packaging and Shipment: Qualified products are packed according to export standards or customer requirements.

    Applications

    1. Coatings and Paints

    Wet ground mica powder is widely used in industrial coatings, anti-corrosion coatings, marine coatings, architectural paints, powder coatings, decorative paints, and protective coatings. Its flake structure improves barrier performance by reducing the penetration of water and corrosive media. In high-performance coatings, wet ground mica can also help improve film durability, flexibility, weather resistance, and surface smoothness. For anti-corrosion paint systems, it is often selected as a functional filler to support long-term coating protection.

    2. Plastics and Engineering Polymers

    In plastic applications, wet ground mica powder can improve dimensional stability, stiffness, heat resistance, and shrinkage control. It is used in polypropylene, nylon, engineering plastics, PVC, and composite materials. The high aspect ratio of wet ground mica helps reinforce polymer systems and may improve mechanical properties when properly dispersed.

    3. Rubber and Elastomers

    Wet ground mica powder is used in rubber products to improve reinforcement, dimensional stability, release performance, heat resistance, and surface quality. It may be used in rubber sheets, seals, gaskets, hoses, cables, and industrial rubber compounds.

    4. Cosmetics and Personal Care

    Certain refined mica grades are used in cosmetics, personal care products, and pearlescent formulations. Wet grinding can help improve smoothness and skin feel. However, cosmetic use requires strict testing, regulatory compliance, and grade confirmation. Customers should confirm requirements before use.

    5. Insulation and Electrical Materials

    Mica is widely known for its electrical insulation and heat resistance. Wet ground mica powder can be used in insulation boards, cables, electrical components, and composite insulation materials where dielectric properties and thermal stability are important.

    6. Construction Materials and Sealants

    Wet ground mica powder can be used in dry mortar, wall coatings, sealants, adhesives, joint compounds, and specialty construction materials. It can improve workability, crack resistance, and surface texture.

    FAQ

    • Q1: What is wet ground mica powder?

      Wet ground mica powder is mica powder produced by grinding mica in a water-based system. This method helps protect the flake structure and improves surface smoothness and aspect ratio.

    • Q2: What is the difference between wet ground mica and dry ground mica?

    • Q3: What industries use wet ground mica powder?

    • Q4: Can WANCHENG MINERAL customize particle size?

    • Q5: Can samples be provided before bulk orders?

    • Q6: Is wet ground mica suitable for cosmetics?

    Contact WANCHENG MINERAL

    Looking for a reliable wet ground mica powder manufacturer and supplier in China?


    WANCHENG MINERAL provides high-quality wet ground mica powder, stable particle size, export-grade packaging, sample support, technical communication, and customized mineral solutions for global industrial customers.
    Contact WANCHENG MINERAL today to request product specifications, samples, technical support, and competitive pricing.
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