High-through-flow zinc oxide resistance sheet and production process thereof
A technology of zinc oxide resistance sheet and production process, which is applied to varistors, coating resistance materials, varistor cores, etc., and can solve the problems of installation and maintenance inconvenience, large lightning arresters, and insufficient flow capacity of zinc oxide resistance sheets. In order to achieve the effects of convenient installation and maintenance, increased flow density, and reasonable degree of difficulty of ball grinding
Inactive Publication Date: 2018-02-16
STATE GRID HUNAN ELECTRIC POWER +3
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Problems solved by technology
[0005] The invention provides a high-flow zinc oxide resistor and its processing technology to solve the problem that the existing zinc oxide resistor has a weak flow capacity, which causes the existing line arrester to be large and heavy, and is extremely inconvenient for installation and maintenance. question
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[0043] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0044] The invention provides a high-throughput zinc oxide resistor, which is prepared in parts by weight from the following raw materials: 85 to 90 parts of zinc oxide, 2.5 to 3.5 parts of bismuth trioxide, and 2 to 3 parts of dicobalt trioxide. 3 parts, 0.6-0.7 parts of nickel trioxide, 0.3-0.35 parts of manganese trioxide, 3.5-4.0 parts of antimony trioxide, 1.4-1.6 parts of silicon dioxide, 0.15-0.25 parts of glass powder, Aluminum nitrate is 0.05-0.1 part.
[0045] A high-flow zinc oxide resistor of the present invention, by adding dicobalt trioxide to zinc oxide to improve the nonlinear characteristics of the resistor, increase energy density and increase the height...
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Abstract
The invention relates to the technical field of high-voltage electrical sensitive ceramic materials, and discloses a high-throughput zinc oxide resistance sheet and a production process thereof. Wherein, a kind of high-flow zinc oxide resistance piece of the present invention comprises zinc oxide, bismuth trioxide, cobalt trioxide, nickel trioxide, manganese trioxide, antimony trioxide, silicon dioxide, glass powder and Aluminum nitrate. In the high-flow zinc oxide resistance sheet formula of the present invention, the content ratio of antimony and silicon is close to 1, and Zn7Sb2O12, ZnSiO4 and better ratio distribution are formed by sintering, so as to achieve the purpose of improving the potential gradient and flow density of the zinc oxide resistance sheet. At the same time, the high-flow zinc oxide resistor of the present invention has a reasonable degree of difficulty in ball milling the selected additives, simplifies the ball milling process, optimizes the selection of ball milling time, and controls the ball milling mixing process so that the raw material of the zinc oxide resistor after ball milling The particle size is small and uniform.
Description
technical field [0001] The invention relates to the technical field of high-voltage electrical sensitive ceramic materials, and more specifically relates to a high-throughput zinc oxide resistance sheet and a production process thereof. Background technique [0002] The zinc oxide resistor is the core component of the metal oxide arrester for power grid operation protection equipment. When encountering a lightning overvoltage or operating overvoltage attack that is many times higher than the normal voltage, the resistance value of the zinc oxide resistor will instantaneously change from high resistance to high resistance. Low resistance, so that a strong instantaneous overcurrent flows into the earth through the zinc oxide resistor, thus avoiding the electrical equipment being attacked by overvoltage and affecting the safe operation of the power grid. Up to now, metal oxide arresters connected in series and parallel with insulators have been It is considered to be one of the...
Claims
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Login to View More IPC IPC(8): H01C7/112H01C17/06C04B35/453C04B35/622C04B35/626
CPCH01C7/112C04B35/453C04B35/622C04B35/6261C04B2235/3217C04B2235/3265C04B2235/3275C04B2235/3279C04B2235/3294C04B2235/3298C04B2235/3418C04B2235/36H01C17/06
Inventor 蒋正龙陆佳政韦国松吴伟徐建王博闻李波
Owner STATE GRID HUNAN ELECTRIC POWER