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Glaze rolling paint for resistive layer for side surface of nonlinear resistance slice and method of manufacturing the same

A non-linear resistance and high-resistance layer technology, applied in the field of rolling glaze paint and its preparation, can solve the problems of easy infiltration of paint, increase of residual pressure ratio, and influence of comprehensive performance of resistor sheet.

Active Publication Date: 2011-05-04
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional high-resistance layer formula is directly used in the rolling glaze process. Since the resistance element is not pre-fired, the density of the resistance element body after debinding is small, and the coating is easier to penetrate. Li + The penetration depth of the resistor is deeper than that of the pre-burned bad body, resulting in a decrease in the flow area of ​​the resistor and an increase in the residual voltage ratio, which affects the overall performance of the resistor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] According to the percentage by weight: 30%, 24%, 22.8%, 23%, 0.2%, respectively weigh ZnO, Bi 2 o 3 , Sb 2 o 3 , SiO 2 , Li 2 CO 3 As an ingredient, spare;

[0014] ZnO, Bi 2 o 3 , Sb 2 o 3 , SiO 2 , Li 2 CO 3 Dry mill for 12 hours after mixing, and calcined at 800°C for 2 hours, and use it as high-resistance layer powder for later use.

[0015] Preparation of samples: see sample table 1.

[0016] Weigh 50g of high-resistance layer powder, mix it with 50g of PVA solution with a concentration of 2.8%, and use it as a reference sample, numbered 0;

[0017] Weigh 49.5g of high resistance layer powder, 0.5g of ZnCl 2 , mixed evenly with 50g of 2.8% PVA solution, numbered 1;

[0018] Weigh 49g high resistance layer powder, 1gZnCl 2 , mixed evenly with 50g of 2.8% PVA solution, numbered 2;

[0019] Weigh 47.5g of high resistance layer powder, 2.5g of ZnCl 2 , and 50g concentration is the PVA solution of 2.8% and mixes evenly, number is 3.

[0020] Sample T...

Embodiment 2

[0030] According to the percentage by weight: 30%, 24%, 22.8%, 23%, 0.2%, respectively weigh ZnO, Bi 2 o 3 , Sb 2 o 3 , SiO 2 , Li 2 CO 3 As an ingredient, spare;

[0031] ZnO, Bi 2 o 3 , Sb 2 o 3 , SiO 2 , Li 2 CO 3 After mixing, dry grind for 12 hours, and calcined at 850°C for 1.5 hours, and use it as high-resistance layer powder for later use.

[0032] Make samples: see sample table 2.

[0033] Weigh 50g of high-resistance layer powder, mix it with 75g of PVA solution with a concentration of 2.8%, and use it as a reference sample, numbered 0;

[0034] Weigh 49.5g of high resistance layer powder, 0.5g of ZnCl 2 , mixed evenly with 75g of 2.8% PVA solution, numbered 1;

[0035] Weigh 49g high resistance layer powder, 1gZnCl 2 , mixed evenly with 2.8% PVA solution of 75 concentration, numbered 2;

[0036] Weigh 47.5g of high resistance layer powder, 2.5g of ZnCl 2 , mix evenly with 75g concentration of 2.8% PVA solution, number 3.

[0037] Sample sheet 2 ...

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Abstract

The invention relates to the manufacture field of nonlinear resistor cards, and provides glaze rolling painting used in a high resistive layer at the side surface of the nonlinear resistor cards. The glaze rolling painting comprises adhesive and ingredients; wherein, the ingredients comprises the following compositions by weight ratio: 28-30% of ZnO, 22-24% of Bi2O3, 21-23% of Sb2O3, 21-23% of SiO2, 0.1-0.2% of Li2CO3 and 1-5% of ZnCl2; the weight of the adhesive is 1-1.5 times of the total weight of the ingredients; according to the weight ratio, ZnO, Bi2O3, Sb2O3, SiO2 and Li2CO3 are mixed to be dry ground for 12 hours and calcined for 1.5 to 2 hours at the temperature of 800 DCG C to 850 DEG C, and then ZnCl2 is added into the mixture to be ground into powder material; finally, the adhesive is weighted to be mixed and stirred well with the powder material to obtain the product.

Description

technical field [0001] The invention relates to the field of manufacture of non-linear resistors, in particular to a rolling glaze paint used for the high-resistance layer on the side of the non-linear resistor and a preparation method thereof. Background technique [0002] In the manufacturing process of zinc oxide resistors, there are three methods to improve the insulation strength of the side of resistors, which are organic insulating glaze, inorganic high-resistance layer and inorganic glass glaze, among which the most commonly used is the inorganic high-resistance layer. [0003] The traditional inorganic high resistance layer adopts dipping glaze process. The pre-firing process is matched with the glaze dipping process, and only the pre-fired resistor body can be dipped in glaze. This brings about a problem, that is, compared with other processes, the glaze dipping process requires one more process. This process requires equipment such as tunnel furnaces to support,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/04
Inventor 蒙晓记谢青云
Owner CHINA XD ELECTRIC CO LTD
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