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Silicon Micro-powder for TPR Rubber Granulation

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Silicon Micro-powder for TPR Rubber Granulation

 

 

The TPR/TPU sole rubber granules are specially formulated with high-grade natural quartz (SiO2 content 99.2%) and produced through a unique iron-free grinding process, resulting in a white and pure product. It exhibits chemical stability, acid and alkali resistance, a large specific surface area, well-developed pores, high surface activity, low oil absorption, strong thickening capability, heat resistance, excellent electrical insulation, and UV resistance.

Thermoplastic elastomer (TPR/TPU shoe sole rubber particles) with silicon micro-powder exhibits superior properties compared to traditional fillers, including high transparency, high hardness, low oil absorption, easy dispersion, and strong stability. This product demonstrates excellent whiteness and transparency, and the resulting transparent masterbatch can be added to PE films and tubes at up to 30% without compromising the final product's transparency, thereby reducing costs.

The silicon micropowder produced by our company features a mature manufacturing process with stable physical and chemical properties, as well as a rational and controllable particle size distribution. This product series can also be customized to meet customer requirements by adjusting other controllable parameters such as transparency, whiteness, and particle size.

 

 

一、 Our product specifications:

Specification of Silicon Micro-powder for TPR Rubber Granulation

20μm

18μm

12μm

10μm

6μm

5μm

4μm

3μm

2μm

325 mesh

600 mesh

1000 mesh

1250 mesh

2000 mesh

3000 mesh

4000 mesh

5000 mesh

8000 mesh

 

 

 

 

3. Typical test values for silicone powder in thermoplastic elastomer (TPR/TPU) shoe sole compounds:

 

project /Items

unit /Unit

Typical Value

Appearance

/

 White powder

 Dielectric constant

εr

10.02

 Dielectric loss

tanδ

0.002

 Moths Hardness

-

7.0

 Linear expansion coefficient

l/K

0.5×10-6

thermal conductivity

W/K·m

0.5

Density

kg/m³

2.35×10³

 moisture content

%

0.02

 SiO2 content

%

99.25

 Fe2O3 content

%

0.1

Density

g/cm3

2.6

Water extract

water extract

conductivity EC

μs/cm

10

Cl

PPM

0.01

PH

-

7

 

The data presented above are test values for standard products. These figures represent general product specifications and may vary within acceptable limits under different conditions. Customers may conduct customized testing based on these data as needed. When required, we can provide additional technical documentation and our application expertise to develop tailored solutions for individual clients.

 

 

4. Silicon micropowder exhibits the following notable characteristics:

·Silica micro-powder, when used as a filler in organic resin, not only enhances the properties of the cured product but also reduces manufacturing costs.

·It can reduce the exothermic peak temperature of epoxy resin curing reaction, decrease the linear expansion coefficient and shrinkage rate of cured material, thereby eliminating internal stress and preventing cracking.

·The rational particle gradation reduces and eliminates sedimentation and stratification during use; it enhances the tensile and compressive strength of the cured material, improves wear resistance, increases the thermal conductivity of the cured material, and boosts flame retardancy.

·Silica micropowder treated with silane coupling agent exhibits excellent wettability for various resins, superior adsorption properties, easy mixing, and no agglomeration.

·Excellent insulation properties: The silicon micropowder, with its high purity, low impurity content, and stable performance, exhibits outstanding electrical insulation and arc resistance, ensuring the cured material possesses superior insulation and arc resistance.

·Corrosion resistance: Silicon micropowder is resistant to chemical reactions with most acids and alkalis, and its uniform particles coat the surface of objects, providing strong corrosion resistance.

 

 

5. The unique advantages of silicone micro-powder for thermoplastic elastomers (TPR/TPU shoe sole compounds):

The TPR shoe material, when filled with specialized silicon micro-powder, exhibits excellent properties including thin consistency, superior permeability and dispersion, as well as strong adhesion. These enhancements significantly improve mechanical performance such as tear resistance and permanent deformation resistance, particularly boosting wear resistance and transparency of rubber products. It also enhances strength, toughness, elongation, smoothness, and anti-aging properties. This product has been widely adopted by numerous shoe sole manufacturers in Jieyang (Guangdong), Huizhou (Guangdong), and Wenzhou (Zhejiang), demonstrating outstanding performance. The product series can also be customized to meet specific customer requirements regarding transparency, whiteness, particle size, and other specifications.

 

 

 

6. Standard physical parameters of silicon micro-powder for TPR sole rubber granulation:

 

Chinese name

Silicon powder

English name

Quartz Powder

molecular formula

SiO2

formula weight

60.08 (according to the 1979 International Atomic Weights and Measures System)

CAS number

7631-86-9

EINECS number

231-545-4

 

 

VII. Packaging, Storage, and Transportation of the Product

1: This product is packaged in laminated plastic woven bags. The packaging specifications are: 25kg/bag, 20kg/bag, and can also be customized according to the requirements of end customers (traders).

 

2: This product shall be stored in a dry, rainproof, and shaded environment. Contact with water may cause clumping and loss of activity. Prolonged exposure to sunlight is prohibited to prevent packaging bag weathering and product spillage.

 

3: Product standard: SJ/T 10675-2002.

 

4: This product is not classified as hazardous material, and its transportation may be processed under the Non-Hazardous Goods Regulations.

 

 

 

Foshan Oulite New Material Technology Co., Ltd. specializes in the production, R&D, and sales of silicon micropowder, quartz powder, spherical alumina, spherical silicon micropowder, barium sulfate, and anti-settling silicon micropowder. Our product portfolio includes silicon micropowder, quartz powder, spherical silicon micropowder, molten silicon micropowder, active silicon micropowder, anti-settling silicon micropowder, ultra-fine quartz powder, electronic-grade silicon micropowder, crystalline silicon micropowder, transparent quartz powder, air-flow quartz powder, transparent powder, high-temperature calcined silicon micropowder, insulating silicon micropowder, rutile quartz powder, quartz sand, and silica powder. We welcome inquiries and purchases.

With years of production and application experience, our company has developed mature processes that ensure stable physical and chemical properties as well as a rational and controllable particle size distribution. Our products are now widely used in various fields, including rubber shoe soles, coatings and paints, electronic packaging materials, silicone potting compounds, engineering plastics, advanced ceramics, EMC integrated circuits, sealants, adhesives, and poultry and livestock feed.

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