Mesh Size 325-5000 (mesh)  Model/Specification XCF Brand Xinchuan Mining
Color 100 (%)  Executive Standard National Standard D50 CAS 7631-86-9
Application Range TPR, TPU, shoe soles, rubber, granulation Special Service Customizable Silica Content ≥99.5%
Whiteness 92-94 Moisture Content 0.01% 

I. Overview of Special Silica Micropowder for TPR Shoe Sole Rubber Granulation:
     The special silica micropowder for TPR shoe sole rubber granulation is produced from high-grade natural quartz (SiO2 content ≥99.7%) through a unique iron-free grinding process. It features pure white color and high purity, offering chemical stability, acid and alkali resistance, large specific surface area, well-developed porosity, high surface activity, low oil absorption, strong thickening properties, high temperature resistance, excellent electrical insulation, and UV resistance.
     Compared with traditional fillers, the silica micropowder for thermoplastic elastomers (TPR/TPU shoe sole granules) offers high transparency, high hardness, low oil absorption, easy dispersion, and excellent stability. With its high whiteness and good transparency, the transparent masterbatch made from this product can be added to PE films and pipes at up to 30% without affecting the transparency of the finished product, thereby reducing costs.
The silica micropowder produced by our company features mature processing technology, stable physical and chemical properties, and a reasonable, controllable particle size distribution. This product series can also be customized in terms of transparency, whiteness, particle size, and other controllable parameters according to customer requirements.


 
II. Product Specification Table:
Special Silica Micropowder for TPR Shoe Sole Rubber Granulation Specifications
325 mesh 400 mesh 600 mesh 800 mesh 1000 mesh 1250 mesh 2000 mesh 3000 mesh 5000 mesh

III. Unique Advantages of Silica Micropowder for Thermoplastic Elastomers (TPR/TPU Shoe Sole Granules):
After filling with the special silica micropowder for TPR shoe sole materials, the compound exhibits improved fluidity, permeability, dispersion, and adhesion. It significantly enhances the mechanical properties of the finished products, including tear resistance and permanent deformation, with particular improvements in the abrasion resistance and transparency of rubber products. It also increases strength, toughness, elongation, surface smoothness, and aging resistance. This product has demonstrated excellent performance in numerous shoe sole manufacturers across Jieyang (Guangdong), Huizhou (Guangdong), Wenzhou (Zhejiang), and other regions. This product series can also be adjusted in transparency, whiteness, particle size, and other parameters according to customer requirements.


 

IV. Typical Test Values of Silica Micropowder for Thermoplastic Elastomers (TPR/TPU Shoe Sole Granules):
Item Unit Typical Test Value
Moisture % 0.01
Loss on Ignition % 0.08
SiO2 % 99.8
Fe2O3 % 0.01
Density 10^3kg/m^3 2.65
Mohs Hardness - 7
Water Extract Conductivity μs/cm 8.1
Cl- ppm 10.1
pH - 6

The above data are test values for standard products. These figures represent general product information and may fluctuate within a controllable range under various conditions. Customers may use these data to conduct their own trials according to their specific requirements. If needed, we can provide further documentation, our technical application expertise, and customized product solutions.

V. General Physical Parameters of Special Silica Micropowder for TPR Shoe Sole Rubber Granulation:
Chinese Name 硅微粉 English Name Quartz Powder
Molecular Formula SiO2 Molecular Weight 60.08 (per 1979 International Atomic Mass Table)
CAS No. 7631-86-9 EINECS No. 231-545-4
 


VI. Packaging, Storage, and Transportation
1. This product is packaged in laminated plastic woven bags. Packaging specifications: 25kg/bag, 20kg/bag. Customized packaging is also available upon request from end customers (or traders).
2. This product should be stored in a dry, rain-protected, and shaded environment. Exposure to moisture will cause caking and loss of activity. Prolonged exposure to direct sunlight should be avoided to prevent bag degradation and product spillage.
3. Product standard: SJ/T 10675-2002.
4. This product is not classified as dangerous goods and may be transported in accordance with the "Non-Dangerous Goods Regulations."

VII. Notable Features of Silica Micropowder:
1. As a filler added to organic resins, silica micropowder not only improves the overall performance of the cured product but also reduces production costs.
2. It lowers the exothermic peak temperature of epoxy resin curing reactions and reduces the linear expansion coefficient and shrinkage rate of the cured product, thereby eliminating internal stress and preventing cracking.
3. With a well-designed particle size distribution, it minimizes and eliminates sedimentation and stratification during use. It enhances the tensile and compressive strength of the cured product, improves abrasion resistance, increases thermal conductivity, and enhances flame retardancy.
4. Silica micropowder treated with silane coupling agents exhibits excellent wetting properties with various resins, good adsorption performance, easy mixing, and no agglomeration.
5. Excellent insulation properties: Due to its high purity, low impurity content, stable performance, and superior electrical insulation, the silica micropowder imparts excellent insulation and arc resistance to the cured product.
6. Corrosion resistance: Silica micropowder does not readily react with other substances and is chemically inert to most acids and alkalis. Its particles uniformly coat the surface of objects, providing strong corrosion resistance.
Dongyuan County Banggao Quartz Sand Processing Plant manufactures, develops, and sells silica micropowder, quartz powder, spherical silica micropowder, and anti-settling silica micropowder. Our main products include silica micropowder, quartz powder, spherical silica micropowder, fused silica micropowder, activated silica micropowder, anti-settling silica micropowder, ultra-fine quartz powder, electronic-grade silica micropowder, crystalline silica micropowder, transparent quartz powder, air-classified quartz powder, transparent powder, high-temperature calcined silica micropowder, insulating silica micropowder, cristobalite powder, quartz sand, and silicon dioxide powder. Welcome to inquire and purchase.
With years of production and application experience, our company offers mature processing technology, stable physical and chemical properties, and a reasonable, controllable particle size distribution. Our products are now widely applied in rubber shoe soles, paints and coatings, electronic packaging materials, silicone potting compounds, engineering plastics, advanced ceramics, EMC integrated circuits, sealants, adhesives, and poultry and livestock feed, among other fields.