Porous alumina ceramic plate, and preparation method thereof

A porous alumina, ceramic plate technology, applied in ceramic products, other household appliances, applications, etc., can solve the problems of rough surface, easy to drop particles, cracking of ceramic sheets, etc., and achieve uniform internal compactness, uniform size distribution, and smoothness. high degree of effect
CN110330358AInactive Publication Date: 2019-10-15NANCHONG THREE CIRCLE ELECTRONICS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANCHONG THREE CIRCLE ELECTRONICS
Publication Date
2019-10-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a porous alumina ceramic plate. The preparation method comprises following steps: 1, a slurry is prepared, wherein alumina powder, a sintering aid, a solvent, a dispersant, a plasticizer, and a binder are subjected to ball milling, and are mixed uniformly so as to obtain a slurry; 2, tape casting is carried out, wherein the slurry obtained in step 1is subjected to vacuum stirring defoaming, and is subjected to tape casting so as to obtain a ceramic blank; and 3, sintering is carried out, wherein the ceramic blank obtained in step 2 is subjectedto drying, thermal insulation degumming, sintering, and cooling so as to obtain the porous alumina ceramic plate. The porous alumina ceramic plate is low in preparation cost, high in porosity, and smooth in surface.
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Description

technical field

[0001] The invention relates to a ceramic plate and a preparation method thereof, in particular to a porous alumina ceramic plate and a preparation method thereof. Background technique

[0002] Porous alumina ceramic plates mainly play a certain role in pressure and insulation during sintering of chip ceramics, and are also generally called ceramic cover plates or insulation sheets. The existing production process of fire-proof tablets is mainly dry pressing molding: granulation→adding appropriate amount of additives to mix to make a billet to be pressed→selecting a suitable mold→adjusting pressing parameters→pressing molding→demolding→drying→sintering.

[0003] However, dry press molding has the following disadvantages: (1) The particle size of the powder used in dry press molding is relatively large (2-6 ÎŒm), and the combination between the particles after molding is relatively loose, resulting in a low degree of smoothness on the surface of the green body ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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