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Preparation method of ceramic slurry and ceramic slurry
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A ceramic slurry and ceramic technology, which is applied in the preparation of ceramic slurry and in the field of ceramic slurry, can solve the problems of poor appearance of processed products, cascading bubbles, high electric breakdown rate of diaphragm, etc.
Active Publication Date: 2020-06-19
GUANGDONG FENGHUA ADVANCED TECH HLDG
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[0003] Based on this, it is necessary to provide a method for preparing ceramic slurry and ceramic slurry for the slurry made of recycled side material, which still has the problems of poor appearance of subsequent processed products, high electrical breakdown rate of the diaphragm, and easy occurrence of cascading bubbles. material
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[0023] The preparation method of the ceramic slurry of one embodiment, comprises the following steps:
[0024] S110. In parts by mass, 30-45 parts of recovered ceramics, 2-8 parts of ceramic powder, 0.05-0.25 parts of dispersant, 45-80 parts of solvent and 0.03-0.15 parts of The defoamer is mixed to obtain a mixed slurry.
[0025] In one embodiment, the recycled ceramics are a large amount of unusable offcuts produced by cutting the diaphragm during the process of manufacturing the MLCC. The scrap contains magnetic materials such as nickel and other non-ferrous metals.
[0026] In one embodiment, the recycled ceramics are non-magnetic recycled ceramics. The recovered ceramics are at least one of barium titanate ceramics and alumina ceramics. Barium titanate ceramics are generally used in capacitor systems, and alumina ceramics are generally used in resistor systems.
[0027] In one embodiment, the ceramic powder is non-magnetic ceramic powder. Preferably, the mass ratio o...
Embodiment 1
[0055] 44Kg of recovered ceramics, 4Kg of ceramic powder, 0.1Kg of dispersant, 31Kg of toluene, 15.5Kg of absolute ethanol and 0.06Kg of defoamer were stirred at a speed of 600rpm for 30min, and then left to stand for 30min. Stirring treatment was then carried out at a rotational speed of 600 rpm for 30 minutes to obtain a mixed slurry. A magnetic separator is used to magnetically separate the mixed slurry to obtain a ceramic slurry; then the ceramic slurry is subjected to ball milling to obtain a ceramic slurry, and a zirconia ball with a diameter of 2.0 mm is used for ball milling, and the speed of the ball milling is 30 rpm. The time of ball milling treatment is 360min.
Embodiment 2
[0057] 30Kg of reclaimed ceramics, 6Kg of ceramic powder, 0.05Kg of dispersant, 30Kg of toluene, 20Kg of absolute ethanol and 0.1Kg of defoamer were stirred at a speed of 300rpm for 30min, then left to stand for 30min, and then Stirring treatment was carried out for 30 min at a rotational speed of 300 rpm to obtain a mixed slurry. A magnetic separator is used to magnetically separate the mixed slurry to obtain a ceramic slurry; then the ceramic slurry is ball milled to obtain a ceramic slurry, and a zirconia ball with a diameter of 3.0mm is used for ball milling, and the speed of the ball milling is 30rpm. The time of ball milling treatment is 360min.
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Abstract
The invention relates to a preparation method of ceramic slurry and ceramic slurry. The preparation method of the ceramic slurry comprises the following steps of: mixing 30-45 parts of recovered ceramic, 2-8 parts of ceramic powder, 0.05-0.25 part of a dispersing agent, 45-80 parts of a solvent and 0.03-0.15 part of a defoaming agent in parts by mass to obtain mixed slurry; and performing magneticseparation treatment on the mixed slurry to obtain the ceramic slurry. According to the preparation method of the ceramic slurry, the resin content ratio in the recovered ceramic can be reduced by doping ceramic powder in the recovered ceramic, an effect of reducing the density of a membrane can be achieved when a ceramic membrane is prepared, and the occurrence of laminated foaming can be reduced; and a dispersing agent, a solvent and a defoaming agent in a certain proportion are mixed during the separation of recovered ceramic slurry, so that the recovered ceramic has better dispersibilityto obtain uniformly dispersed ceramic slurry, thereby obtaining the ceramic membrane with good appearance.
Description
technical field [0001] The invention relates to the technical field of ceramic material recovery, in particular to a preparation method of ceramic slurry and the ceramic slurry. Background technique [0002] The current rapid development of the electronics industry has put forward strict requirements for the miniaturization, high capacity, low cost, and high reliability of chip multilayer ceramic capacitors (MLCC). For a membrane with a certain viscosity and strength, the inner electrode is printed on the membrane, and the membrane needs to be cut when stacking, resulting in a large amount of unusable trim in the process, high production costs, and ultimately competitiveness in the market insufficient. By recycling the scrap, the cost of the MLCC production process can be reduced, thereby reducing the cost of manufacturing the MLCC and obtaining significant benefits. However, the slurry made of recycled scraps still has the problems of poor appearance of subsequent process...
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