Raw material formulation of high-gradient non-linear resistance card and manufacturing method thereof
A technology of non-linear resistors and manufacturing methods, applied in the direction of resistor manufacturing, resistors, varistors, etc., can solve the problems that cannot fully meet the requirements of ultra-high voltage transmission and distribution arrester equipment, and achieve space volume reduction, reduce environmental pollution, The effect of saving raw materials
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Embodiment 1
[0017] The present embodiment adopts the raw material formula of the high-gradient non-linear resistor sheet, and its molar percentage composition is: wherein Bi 2 o 3 : 0.5-1.5%, Co 2 o 3 : 0.7-1.2%, MnCO 3 : 0.4-0.9%, Sb 2 o 3 : 0.7-1.5%, Cr 2 o 3 : 0.2-0.8%, SiO 2 : 0.5-1.1%, Y 2 o 3 0.3-1.2% additives; the balance is mainly ZnO.
[0018] In this embodiment, the manufacturing method is carried out according to the raw material formula of the above-mentioned high-gradient non-linear resistance sheet, which specifically includes the following steps:
[0019] First, weigh the components of the additive and the main material ZnO, then mix the components of the additive through ball milling, heat and dry them, put them into a ceramic sagger, calcine at 800°C for 1 hour, cool naturally, and pulverize to form fine additive powder ;
[0020] Secondly, add additive powder, main material ZnO, organic binder-polyvinyl alcohol (PVA), polyacrylate ammonium dispersant, water...
Embodiment 2
[0029] The present embodiment adopts the raw material formula of the high-gradient non-linear resistor sheet, and its molar percentage composition is: wherein Bi 2 o 3 : 0.5-1.5%, Co 2 o 3 : 0.7-1.2%, MnCO 3 : 0.4-0.9%, Sb 2 o 3 : O.7-1.5%, Cr 2 o 3 : 0.2-0.8%, SiO 2 : 0.5-1.1%, Y 3 o 3 0.3-1.2% additives; the balance is mainly ZnO.
[0030] In this embodiment, the manufacturing method is carried out according to the raw material formula of the above-mentioned high-gradient non-linear resistance sheet, which specifically includes the following steps:
[0031] First, weigh the components of the additive and the main material ZnO, then mix the components of the additive through ball milling, heat and dry them, put them into a ceramic sagger, calcine at 800°C for 1 hour, cool naturally, and pulverize to form fine additive powder ;
[0032] Secondly, in the mixing tank, add additive powder, main material ZnO, organic binder, dispersant, water and Al(NO 3 ) 3 9H 2 O...
Embodiment 3
[0041] The present embodiment adopts the raw material formula of the high-gradient non-linear resistor sheet, and its molar percentage composition is: wherein Bi 2 o 3 : 1.0%, Co 2 o 3 : 1.0%, MnCO 3 : 0.6%, Sb 2 o 3 : 1.0%, Cr 2 o 3 : 0.5%, SiO 2 : 1.0%, Y 2 o 3 1.0%, the balance is mainly ZnO. In the manufacturing process of the resistor chip, the green body is a cylinder with a diameter of 36 mm to 126 mm and a height of 27 mm; after removing the organic binder and dispersant, it is sintered at 1100 ° C or 1200 ° C for 4 hours to obtain a resistor chip sintered body, and others The steps are the same as those in Examples 1 and 2, and the non-linear characteristics of the manufactured resistor sheet are measured, and the measurement results are shown in Table 3 and Table 4.
[0042] table 3:
[0043] serial number
[0044] Table 4:
[0045] serial number
[0046] serial number
[0047] It can be seen from Table 3 and Table 4 that t...
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