High voltage gradient zinc oxide varistor formulation and preparation methods

Reasonable formula of TGE metal oxide varistor sizing is preferably the component with the content of the zinc oxide varistor, prepared using the formulation of zinc oxide varistor with up to 350 ~ 600V / mm high voltage gradient, while at the high voltage gradient, oxidation zinc varistor capable of maintaining good nonlinear properties, electrical properties and anti-aging properties, in order to meet the practical application of electronic components, such as arrester miniaturization requirements. The preparation method of zinc oxide varistor resistance of the zinc oxide film sub-component and trace ingredients and mix evenly matched tiny size, reduce the amount of contamination, while the addition of the low-temperature thermal processes during the sintering process leaving the metal oxide varistor basics to form a stable grain boundary structure, help to improve the stability of the zinc oxide varistor and a secondary heat treatment during the phase transition of bismuth oxide, thereby improving the electrical properties of TGE Glass Coating varistors.
Zinc oxide can be inserted to corrosion or food supplement zinc, but the product demanding, especially to control the content of harmful heavy metals.
Zinc oxide itself is not toxic, but can be inhaled zinc oxide particles are harmful.
Zinc smelting industry, preparation of brass, galvanized work are likely to produce zinc oxide smoke.
To prevent smoke, galvanized iron can not be welded directly, you must first remove the surface film of zinc.