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Nickel inner electrode slurry

A technology of internal electrodes and pastes, applied to fixed capacitor electrodes, conductive materials dispersed in non-conductive inorganic materials, laminated capacitors, etc., can solve problems such as cracking, difficult matching, and poor matching of dielectric layers

Active Publication Date: 2010-10-27
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the difficulty in matching the X7R nickel inner electrode paste with the ceramic material, most nickel inner electrode pastes can only meet the production needs of MLCC products with low-layer count X7R characteristics. When used in high-layer count MLCC products, dielectric Cracking problems caused by poor layer matching

Method used

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Embodiment

[0009] A kind of nickel internal electrode slurry, its weight percent composition is as the No. 1~27 slurry formula of table 1, according to the usual method of slurry, such as weighing each formula in proportion to carry out batching→stirring→dispersion→rolling→semi-finished product Inspection→slurry mixing→finished product inspection→packing to prepare nickel internal electrode slurry for MLCC, and the particle size of the ultrafine nickel powder is below 1 μm. Described inorganic porcelain material additive is TiO 2 , CaCO 3 , BaO, SiO 2 、 Bi 2 o 3 、Cr 2 o 3 , ZrO 2 , BaTiO 3 , SrZrO 3 , CaZrO 3 One or more of these substances in powder, or all of these substances. The polymer resin is one or two of polyurethane, rosin resin, ethyl cellulose, or all of these substances. The organic solvent is one or more of 9-carbon alcohol, 8-carbon alcohol, naphtha, turpentine or all of these solvents. Also add barium titanate BaTiO as a dispersant in the organic solvent 3 Po...

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Abstract

The invention discloses nickel inner electrode slurry. The slurry comprises the following components in percentage by weight: 45 to 55 percent of superfine nickel powder, 5 to 15 percent of inorganic ceramic additive, 2 to 4 percent of high molecular resin and 26 to 48 percent of organic solvent. The particle size of the superfine nickel powder is less than 1 mu m. The obtained nickel inner electrode slurry has the advantages of high dispersibility, high performance and high environmental friendliness. When the slurry is taken as an inner electrode of multilayer ceramic capacitor (MLCC), the matching performance of an inner electrode layer and a dielectric layer is high and the cracking problem is not caused.

Description

technical field [0001] The invention relates to an electronic paste, in particular to a nickel internal electrode paste applied to base metal multilayer ceramic capacitors. Background technique [0002] At present, the existing X7R material in China is a ceramic material with low frequency and high positive temperature coefficient. X stands for -55°C and 7 stands for +125°C. Widely used in computers, mobile phones, VCD, DVD, audio, air conditioners, refrigerators, disinfection cabinets, microwave ovens and other household appliances and commercial appliances, automobiles, industrial instruments and other fields. However, due to the difficulty in matching the X7R nickel inner electrode paste with the ceramic material, most nickel inner electrode pastes can only meet the production needs of MLCC products with low-layer count X7R characteristics. When used in high-layer count MLCC products, dielectric Cracking problems caused by poor layer matching. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/008H01B1/22H01G4/30
Inventor 张韶鸽孟淑媛傅衣梅江志坚
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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