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Silica Micropowder for Engineered Stone

Silica Micropowder for Engineered Stone

发布时间:1970-01-01 08:32:50 来源:Unknown 作者:admin 点击:8
Silica Micropowder for Engineered Stone
Origin: Heyuan, Guangdong | SiO2 Content: 99.0-99.75% | Melting Point: 1750°C
Mohs Hardness: 7 | Density: 2.65 g/cm³ | Iron Content: 100ppm
Packaging: 25kg Moisture-Proof | Oil Absorption: 20g/ml 

I. Overview of Silica Micropowder for Engineered Stone:
Yingfeng Mining's silica micropowder for engineered stone has SiO2 as its primary chemical component and is insoluble in water and acids. It possesses the characteristics required of premium fillers, including low impurities, high fineness, high filling capacity, high hardness, high electrical resistivity, and resistance to acids and alkalis. Compared to common clay minerals (such as ordinary quartz powder, calcium carbonate, kaolin, and talc), it exhibits significantly lower water absorption, lower oil absorption, and rapid dispersibility. It not only imparts excellent compactness, weather resistance, and acid-alkali corrosion resistance to engineered stone, but also effectively improves the flow and dispersion processes during stone fabrication. This allows the composite to accommodate a higher proportion of fillers, increasing the addition rate by 20% and effectively reducing production costs.


  
II. Product Specification Table:

Silica Micropowder for Engineered Stone Specifications
400 mesh | 600 mesh | 800 mesh | 1250 mesh | 2000 mesh | 2500 mesh | 3000 mesh | 4000 mesh | 5000 mesh | 6000 mesh | 8000 mesh | 10000 mesh

 

III. Application Advantages of Silica Micropowder in Engineered Stone Products
1. The product is quartz-based with high purity, SiO2 > 99%, density of 2.65 g/cm³, Mohs hardness of 7-7.5, and contains no radioactive elements;
2. Particles are quasi-spherical with excellent flowability and dispersibility, preventing agglomeration, enhancing stone compactness, and increasing stone strength;
3. Low oil absorption, excellent compatibility and wettability with resins, allowing a higher addition rate than ordinary quartz powder, which correspondingly reduces the amount of unsaturated polyester required and saves costs. After curing, it delivers high compressive, shear, crack-resistance, and impact strength;
4. Excellent weather resistance and acid-alkali corrosion resistance (does not react with any acid except hydrofluoric acid);
5. The activated product is treated with silane coupling agents, making it particularly suitable for engineered quartz stone, reducing the amount of silane needed during production.
6. When mixed with organic polymer materials, it achieves dense compaction and enhances the strength of the matrix. It disperses easily, blends uniformly, and significantly improves material flowability, dispersibility, and anti-settling performance, effectively enhancing the processing performance of mixed materials.


 
IV. Product Quality and Performance of Silica Micropowder for Engineered Stone:
    Silica micropowder for engineered stone is a neutral mineral raw material with high hardness, high refractoriness, high stability, and high electrical resistivity.
1. Composition: The quasi-spherical powder has high purity with extremely low impurity content, SiO2 content above 99%, and stable chemical properties.
2. Morphology: The quasi-spherical powder retains the microcrystalline quartz crystal form with no internal defects. Due to tectonic forces and long-term weathering and leaching, the powder particles form a quasi-spherical shape with high sphericity (nearly equal triaxial dimensions) and low roundness (with abraded and passivated edges).

Dongyuan County Banggao Quartz Sand Processing Factory is a professional manufacturer specializing in the production and sales of silica micropowder, quartz powder, air-classified quartz powder, and fully (semi-)transparent air-classified quartz powder, as well as high-purity quartz powder and silica micropowder in various mesh sizes (400 mesh to 10,000 mesh). Welcome to contact us at 13823158587.