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Your current location :Home > Silicon Dioxide (SiO2)

Silicon Dioxide (SiO2)

Silicon Dioxide is a non-toxic, odourless and non-polluting inorganic non-metallic material with stable chemical property. After surface treatment, it has good hydrophilicity or oleophilicity. This product is available in multiple forms, either in powder, slurry or transparent aqueous solution and can also be used as ultraviolet or ultrared ray reflecting material. In addition to the specification in the following table, we can prepare nanosilicon oxide of different grain size, different specific surface area and different treated form at the request of the user.

Silicon Dioxide Sputtering targets (SiO2 Target)

Purity--- 99%,99.5%,99.8%,99.9%,99.95%,99.99%

Shape--- Discs, Plate, Step (Dia ≤500mm,, Thickness ≥1mm

Rectangle, Sheet, Step (Length ≤1000mm, Width ≤500mm, Thickness ≥1mm)

Seamless Tube( Diameter< 300mm, Thickness >3mm )

Application --- Multi-layer coatings, filters, anti-reflection coatings, beam splitters, films for capacitors etc..

Silicon Dioxide Evaporation Material 

Density ---2.202 g/cm3 Purity--- 99.99% Melting point----1700℃
Linear expansion coefficient--- 0.5×10-6/K(293-1173K)
Specific heat capacity--- 0.201 Cal/g.K
Thermal conductivity--- (at 20℃) 0.00285 Cal/K.cm.s(287K)
Hardness--- (acc. to Mohs) 5.5, (acc. to Knoop) 461 g/mm2
Properties of thin film---
Transmission range 200 ~ 8000nm
Refractive index at 550nm ~1.46
Hints on evaporation--- 

Evaporation with electron beam gun.
Evaporation temperature~ 1700 ℃
Evaporation pressure ~5×10-3Pa

Vapour pressure at 2000℃ 1Pa,at 2200℃ 10Pa
Solubility--- insoluble in water,soluble in hydrolnoric acid

Shape---solid substance, Colourless clear transparent granules, crystal

Area---Multi-layer coatings, filters, anti-reflection coatings, beam splitters, films for capacitors. etc..

Silicon Dioxide Wafer Substrate

Purity--- 99.99%,99.999%

Shape--- Discs, Rectangle, Custom-Made

Diameter--- Dia (≤200mm), 

Length---(≤600mm), Width---(≤200mm)

Thickness---(≥1mm)

Surface---Polish on one side, Polish on both side

Silicon Dioxide Rod

Purity--- 99%,99.5%,99.9%,99.99%

Diameter --- 2"~6" Length---Custom-made

Silicon Dioxide Nanometer Powder ( SiO2 nanometer )

Appearance --- White powder

Content of silicon oxide (%) --- 99.9

Average grain size (nm) --- 80

Specific surface area (m2/g) --- >800

Ultraviolet reflectivily (%) --- >85

Shaking compactness (g/cm2) --- <0.2

Loss of weight in drying (%) --- <1.4

Loss of weight in burning (%) --- <1.8

Appearance --- White powder

Content of silicon oxide (%) --- 99

Average grain size (nm) --- 10

Specific surface area (m2/g) --- >600

Ultraviolet reflectivily (%) --- >80

Shaking compactness (g/cm2) --- <0.21

Loss of weight in drying (%) --- <1.4

Loss of weight in burning (%) --- <1.8

Application ---

(1) Chemical industry, plastics, coating, rubber, pigment, sealant, fibreglass reinforced plactics, high-grade organic glass.
(2) Electronics, electronic packaging material, ferrite material, battery.
(3) Ceramics, nanoceramics, composite ceramic substrate.
(4) Medicine and pesticide carrier, artificial teeth.
(5) Cosmetic trade, uvioresistant meterial.
(6) Antibacterial material.
(7) Optical and lighting fixture.
(8) War industry: Used in stealthy coating and armoured composite material.
(9) Building and water-proof materials.

 

 

 

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