Glass grade zinc oxide powder

Glass grade zinc oxide powder is added to different types of glass to give the glass some special properties: l Glass grade zinc oxide powder is used to replace 5% of silicon dioxide in photosensitive glass and photosensitive ceramics, which can significantly reduce its thermal expansion coefficient, increase light sensitivity and light density by nearly 20 times.

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Glass grade zinc oxide powder
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Zinc oxide is a white powder with stable performance. It is widely used in industries such as electronics, rubber, ceramics, feed, paint, papermaking, fine chemicals, magnetic materials, refined petroleum, optical glass, high-energy storage batteries, and gas desulfurization. MST has an annual production capacity of 12,000 tons of zinc oxide and is one of the leading enterprises in the industry.

Product name	Zinc oxide	Molecular formula	ZnO
CAS NO	1314-13-2	EINECS NO	215-222-5
Density	5.606g/cm3	Molecular weight	81.38
Melting point	1975℃	Boiling Point:	2360ºC
Purity	0.99	Active substance content	0.997
H.S CODE	2817001000	Appearance	White powder or crystal

Glass grade zinc oxide powder is added to different types of glass to give the glass some special properties:

l Glass grade zinc oxide powder is used to replace 5% of silicon dioxide in photosensitive glass and photosensitive ceramics, which can significantly reduce its thermal expansion coefficient, increase light sensitivity and light density by nearly 20 times.

l Glass grade zinc oxide powder is added to the optical glass, which can make the glass have high refractive index, UV absorption and light transmission performance.

l Glass grade zinc oxide powder has electrical and semiconductor properties in electrical glass, enabling it to be used in printed circuits, capacitors, resistors and conductive products.

l Glass grade zinc oxide powder is also widely used in the transparent rough glaze of handicrafts or tableware and the translucent glaze of rough ceramics.

In short,Glass grade zinc oxide powder for glass is more used in opal glaze and low expansion glass. The effect of zinc oxide on the glass structure is similar to that of alumina and should be an intermediate. As a flux, it forms a eutectic with certain components in the glass, which can form a liquid phase at a lower temperature to promote the overall melting.

Standard:《HG/T4532-2013》
Item	type1-1	type1-2	type2-1	type2-1
Zinc oxide（Zn0 calculating as dry materia)%≥	99	85	99.8	95
loss on drying %≤	0.8	—	—	0.8
Water soluble matter %≤	0.2	0.4	0.05	0.4
Lead ( pb）%≤	0.001	0.001	0.001	0.001
Mercury（Hg）%≤	0.0003	0.0003	0.0003	0.0003
Cadmium (Cd）%≤	0.0003	0.0003	0.0003	0.0003
Arsenic（Ar）%≤	0.0003	0.0003	0.0003	0.0003
SEM average particle size/um≤	80	80	—	80
specific surface area（m3/g）≥	15	30	—	40

MST has a number of patented production processes and equipment with independent intellectual property rights. The indirect zinc oxide, nano-zinc oxide, active zinc oxide, and granular zinc oxide produced are not only widely used in military, rubber, cosmetics, ceramics, glass and many other fields. In addition, the zinc oxide produced has a large band gap and exciton binding energy, high transparency, and excellent room temperature light-emitting performance. It is also used in liquid crystal displays, thin film transistors, light-emitting diodes and other products in the semiconductor field.