Preparation method of chip multilayer ceramic capacitor
A technology of multilayer ceramics and capacitors, which is applied in clay products, applications, household appliances, etc., can solve the problems of uneven appearance, undulations, and poor effects of chip multilayer ceramic capacitors, and achieve good product consistency and no diffusion , the effect of uniform color depth
Active Publication Date: 2020-05-15
GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG
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Problems solved by technology
[0004] At present, using the existing preparation technology of chip multilayer ceramic capacitors, the prepared chip multilayer ceramic capacitors have uneven appearance and undulating phenomena, which makes the overall effect not good.
Method used
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Embodiment 1
[0027] Ceramic slurry formula: 500 parts of Ferro-100 ceramic powder, 8.5 parts of dioctyl phthalate, 19 parts of isobutanol, 72 parts of n-propyl acetate, 2.5 parts of castor oil, 0.5 parts of anti-settling agent and polyethylene Alcohol butyral 8.5 parts.
[0028] A preparation method of a chip multilayer ceramic capacitor, the specific steps of the preparation method are:
[0029] S1. Prepare ceramic slurry, put ceramic powder Ferro-100, dioctyl phthalate, isobutanol, n-propyl acetate, castor oil and anti-settling agent in the above ceramic slurry formula according to the mass parts Put it into a pulping bottle; then add zirconia balls and zirconia columns for ball milling for 8 hours; finally add polyvinyl butyral for another 14 hours of ball milling to obtain ceramic slurry.
[0030] S2. The prepared ceramic slurry is left to stand for about 1 hour, and a tape is made by a tape making machine to obtain a tape, wherein the parameters of the tape making machine are shown i...
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Abstract
The invention provides a preparation method of a chip multilayer ceramic capacitor. The preparation method comprises the following steps: 1) preparing ceramic slurry; 2) producing a strip from the ceramic slurry by using a strip making machine to obtain the strip; 3) cutting the strip, and then fitting the strip with a PC board to obtain a dielectric layer material strip; (4) continuously printingan inner electrode slurry on the PC board surface of the dielectric strip twice, baking, covering the dielectric strip above the inner electrode slurry, pressing, continuously printing the covered PCboard surface of the dielectric strip twice, baking, and repeating the processes in sequence to obtain a dielectric strip laminated layer with an inner electrode; 5) laminating the dielectric strip with the inner electrode, and performing vacuum static water pressure equalization; and 6) carrying out cutting, glue discharging, sintering, chamfering and end silver coating treatment after vacuum static water pressure equalization to finally form the chip multilayer ceramic capacitor. The chip multilayer ceramic capacitor prepared through the method has the advantages of being good in smoothness, free of pinholes, free of cracks, free of bubbles between layers and free of foreign matter.
Description
technical field [0001] The disclosure relates to the technical field of electronic materials and components, in particular to a method for preparing a chip multilayer ceramic capacitor. Background technique [0002] Multi-Layer Ceramic Capacitor MLCC (Multi-Layer Ceramic Capacitor) is stacked by ceramic dielectric diaphragms with printed electrodes (internal electrodes) in a dislocation manner, and a ceramic chip is formed by one-time high-temperature sintering, and then placed on both sides of the chip The end is sealed with a metal layer (external electrode) to form a monolithic structure, so it is also called a monolithic capacitor. [0003] Under the background that information products tend to be light, thin, short, and small, and surface mount technology (SMT) is becoming more and more mature, multilayer chip ceramic capacitors MLCC have the characteristics of "blocking direct traffic" in capacitors, and because of their small size It has the characteristics of chemic...
Claims
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IPC IPC(8): C04B35/00C04B33/00C04B35/622C04B41/88
CPCC04B35/00C04B33/00C04B35/622C04B41/009C04B41/5194C04B41/88C04B2235/6025C04B2235/612C04B2235/602C04B2235/656C04B2235/6565C04B2235/6567C04B41/4535C04B41/0072
Inventor 江婵王克亮涂舜恒
Owner GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG