Coating Grade Zinc Oxide Powder

Coating Grade Zinc Oxide Powder

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Coating grade zinc oxide powder has a strong solubilizing effect in the glaze,  it can reduce the expansion coefficient of the glaze, and improve the thermal stability of the product, but also increase the gloss and whiteness of the glaze, improve the elasticity of the glaze.

Basic Product Data Of Coating Grade Zinc Oxide Powder:

Matters needing attention in the use of coating grade zinc oxide powder in coatings:

1. Before use, Coating grade zinc oxide powder needs to be calcined at a high temperature. The calcination temperature is 1200 degrees Celsius. If coating grade zinc oxide powder is directly added to the glaze without being calcined, it will affect the process performance of the glaze, Because after calcination, it will reduce the shrinkage during the firing process and reduce the shrinkage due to shrinkage. The phenomenon of bald glaze, bubbles, pinholes, etc. is generated, which increases the tightness and improves the performance of raw glaze. but if it is added to the frit, there is no need for high temperature.

2. Excessive amount of coating grade zinc oxide powder in the glaze will affect the glaze gloss. Coating grade zinc oxide powder is used as a flux in low-temperature frit glaze, the general dosage is between 5% and 10%, and the dosage in low-temperature raw glaze is generally about 5%. When the glaze is cooled rapidly, it forms large crystals The pattern is very beautiful. In crystal glaze, the amount of zinc oxide is up to 20-30%

3. Coating grade zinc oxide powder has an adverse effect on certain colored glazes, especially chrome glazes.

MST chemical coating grade zinc oxide powder is made by indirect method with high purity and low impurities. It can meet all the requirement of coating, And keep customers' product quality stable.

Coating Grade Zinc Oxide Powder Specification