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The main ingredient of Silicon Dioxide, it
is a special purpose ind ustrial mater
ial with a of physical and chemical properties:
1.Hi-temperature resistance. softening point
temperature is about 1730℃,Applied
under the 1100℃ with long time,The top temperature
can up to 1450℃ in short time.
2. Anti-corrisive. Quartz glass is hard to react
with other acid ex cept hydrof-
luoric acid,It's acid-resistance is 30 times than
ceramic, 150 times than stainle-
ss steel, especially the chemical stability under
high temperature which can not
be exceeded.
3.Thermal stability properties. Extremely low
coefficient of expans ion,it req-
uire minimum sensitivity to thermal changes.For
example, quartz glass tube can be
heated rapidly to above 1100℃ and then plunged
into water without cracking.
4. Transmittance properties. Excellet transmittance
property from UV to infrar-
ed radiation. Visible transmission can up to 93％,especia
lly UV spectrum which
the transmission can up to 80.
5.Electrical insulating properties. Electrical
resistance isten th ousands t-
imes than the common glass.it is a excellent electrical
insulating material.
even under the high temperiture.
The applications is mainly in the industries
of lighting,semiconduc tor,comm-
unication,military,metallurgic,construction,chemical,mechanical,and
electrical.
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