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Silicon Dioxide (SiO2) |
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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. |
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  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.. |
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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 |
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Silicon
Dioxide Rod
Purity---
99%,99.5%,99.9%,99.99%
Diameter
--- 2"~6"
Length---Custom-made |
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Silicon
Dioxide Nanometer Powder ( SiO2 nanometer )
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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) --- ＜0.21
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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