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silica powder


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silica powder

Affiliate classification
Chinese name :
English name :
silica powder
Molecular formula :
Molecular weight :
60.08 (According to the 1979 International Atomic Scale)
H.S. Coding :
silica powder
Performance: Yuanlei brand silicon micropowder is a white amorphous powder, light weight.
Features: Silicon micropowder refractor >1600 °C. The bulk density is 200-250 kg/m3; the fineness of silicon micropowder is less than 1 micron, accounting for more than 80%, the average particle size is 0.1-0.3 micron, and the specific surface area is 20-28 m/g. Its fineness and specific surface area are about 80 to 100 times that of cement and 50 to 70 times that of fly ash.
Spherical silicon micropowder Application range: silicon micropowder for paint coating, silicon micropowder for epoxy floor, silicon micropowder for rubber, silicon micropowder for sealant, silicon micropowder for electronic grade and electrical grade molding compound, silicon micropowder for precision ceramics.
1. Silicon powder for paint coatings: 400-2500 mesh
 SiO2: >99.5% Whiteness: between 70-94 degrees Hardness: 7 (Mohs hardness)
The oil absorption, the mixing viscosity are low, the dispersibility and the fluidity are good, and the angle of repose formed by the accumulation is small and the friction is resistant.
2. Silicon micropowder for epoxy floor. Mesh: 400-1250 mesh
SiO2: >99% Whiteness: between 70-94 degrees Hardness: 7 (Mohs hardness)
Low viscosity, good fluidity, good stackability, easy compaction, easy to combine with epoxy resin. Compared with traditional silicon micropowder, it can save the amount of epoxy resin.
3, silicon powder for rubber mesh: 1250-5000 mesh
SiO2: >99.5% Whiteness: >70-94 degrees Hardness: 7 (Mohs hardness)
Wear-resistant rubber products include rubber sheets, tubes, belts and rolls. It requires good permeability and strong adhesion of the rubber compound. The test results show that the rubber compound filled with silicon powder fully reflects the rubber compound. The unique properties of good permeability, good dispersibility and strong adhesion are beneficial to the rubbing of the rubber on the canvas and the adhesion strength between the film and the canvas. The tear strength and permanent deformation of the product. performance.
4. Silicon powder for sealing glue. Number of mesh: 1250 mesh
SiO2: >99.5% Whiteness: >80-94 degrees Hardness: 7 (Mohs hardness)
The treated silicon micropowder has a water content of less than 0.1%, and is used in the sealant to improve the bonding strength, yield value and shearing force dilution index of the colloid. It has thickening, reinforcing effect, tear resistance and anti-aging effect.
5. Silicon micropowder for electronic grade and electrical grade molding compound. Mesh: 600-5000 mesh
SiO2: >99.5% Whiteness: >90 degrees Hardness: 7 (Mohs hardness)
Quasi-spherical silicon micropowder is used in epoxy resin encapsulation materials, which can greatly increase the filling amount, reduce the viscosity of the mixed material system, improve the processing performance, improve the penetration ability of the mixture, and reduce the expansion coefficient of the cured product and the shrinkage rate of the curing process, reducing the thermal rise.
6. Silicon micropowder for precision ceramics
SiO2: >99.7% Whiteness: >92 degrees Hardness: 7 (Mohs hardness)
Spherical silicon micropowder Technical indicators:
Corresponding parameter set not found, please add it in property template of background
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