A kind of titanium dioxide high-voltage varistor and its preparation method
A technology of varistors and titanium dioxide, which is applied in the direction of varistor cores, varistors, resistors, etc., can solve the problems of low potential gradient of unsuitable varistors and titanium dioxide varistors, and achieve Improved square wave flow capacity, short sintering time and low cost
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[0026] The technical solution of the present invention will be further described below.
[0027] The formula of the titanium dioxide high-voltage varistor of the present invention is proportioned according to weight percentage: 75-79.1% of titanium dioxide, 10-14.1% of zinc oxide, 2.2-2.226% of bismuth oxide, 0.3-0.369% of manganese dioxide, antimony trioxide 0.5-0.569%, nickelous oxide 2.1-2.133%, cobalt oxide 1.2-1.268%, silicon carbide 1.2-1.263%, chromium oxide 0.4-0.439%, boron glass powder 3-3.2%. The titanium dioxide high-voltage varistor of the present invention improves the nonlinear coefficient and dielectric constant of the varistor by using titanium dioxide as the main raw material, reduces the dielectric loss, and improves the varistor by adding zinc oxide and bismuth oxide auxiliary materials. Potential gradient, and add manganese dioxide, antimony trioxide, nickel oxide, cobalt oxide, silicon carbide, chromium oxide, boron glass powder and other auxiliary materi...
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