Composite opacifier and its preparation method and ceramic glaze and ceramics and application

A technology for compounding emulsion and slurry, applied in the field of ceramics, can solve the problems of poor opacification effect, high radioactivity, expensive raw materials, etc., and achieve the effects of easy control, simple operation, and easy availability of raw materials

Active Publication Date: 2020-10-02
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The first purpose of the present invention is to provide a composite emulsifier to alleviate technical problems such as expensive raw materials, high radioactivity, and poor emulsification effect in the prior art

Method used

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  • Composite opacifier and its preparation method and ceramic glaze and ceramics and application
  • Composite opacifier and its preparation method and ceramic glaze and ceramics and application
  • Composite opacifier and its preparation method and ceramic glaze and ceramics and application

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preparation example Construction

[0077] The preparation method of the composite emulsifying agent provided by the invention is simple, adopts a liquid-phase mechanochemical method, has simple operation, is easy to control, and is suitable for large-scale production.

[0078] In a preferred embodiment, in the step (a), the particle size of the apatite in the first slurry is 1.5-2 μm, preferably 1.8 μm.

[0079] If the particle size of apatite is too large, it is not easy to melt, or the second-phase glass droplets formed after melting are not uniformly dispersed, resulting in poor effects of phase separation and crystallization opacification; too small particle size increases the difficulty of production and production costs.

[0080] Wherein, the particle size of apatite may be, for example, but not limited to 1.5 μm, 1.6 μm, 1.7 μm, 1.8 μm, 1.9 μm or 2 μm.

[0081] In a preferred embodiment, the particle size of titanium dioxide, metal oxide and barium salt in the second slurry is 0.1-0.3 μm, preferably 0.2...

Embodiment 1

[0114] This embodiment provides a composite emulsifier, including core-shell microspheres with a core and a coating, the particle size of the core-shell microspheres is 4 μm, the core includes fluoroapatite, and the coating includes anatase Type titanium dioxide;

[0115] The core-shell structure microsphere includes the following components in terms of mass percentage: 45 parts of fluorapatite and 55 parts of anatase titanium dioxide.

Embodiment 2

[0117] This embodiment provides a composite emulsifier, including core-shell microspheres with a core and a coating, the particle size of the core-shell microspheres is 3 μm, the core includes fluoroapatite, and the coating includes anatase Type titanium dioxide;

[0118] The core-shell structure microsphere includes the following components in terms of mass percentage: 42 parts of fluorapatite and 58 parts of anatase titanium dioxide.

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Abstract

The invention provides a composite opacifying agent, a preparation method of the composite opacifying agent, ceramic glaze, ceramic and application, and relates to the technical field of ceramics. Thecomposite opacifying agent comprises core shell structure microspheres with a core and a coating film, wherein the core comprises phosphorite; the coating film comprises titanium pigment; the mass ratio of the phosphorite to the titanium pigment is (40 to 50):(50 to 60). The composite opacifying agent provided by the invention has the advantages that the core shell structure microspheres are formed by using the phosphorite as the core and using the titanium pigment as the coating film; the raw materials can be easily obtained; the environmental-friendly effect is achieved; the cost is low; the composite opacifying agent is used as an additive to be added into a ceramic formula; the use is convenient and flexible; in the high-temperature firing process of the ceramic glaze, the double effects of phase-separated opacification and crystallization opacification are achieved; the opacification effect is obvious; the enamel layer whiteness is high; the covering power is high; the texture isexquisite and soft.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a composite opacifying agent, a preparation method thereof, ceramic glazes, ceramics and applications. Background technique [0002] Glazes containing opacifiers are an important raw material widely used in the production of architectural ceramics and sanitary ceramics in my country, mainly to cover the bottom of ceramic blanks. At present, the zirconium opacifying glaze containing zirconium silicate opacifying agent is the most widely used. However, in terms of performance, zirconium opaque glaze has defects such as low hiding power, high temperature viscosity, and uneven glaze layer. At the same time, the raw material zircon sand is expensive, high in radioactivity, and there are few secondary precipitated zirconium silicate particles. , resulting in the emulsification of residual particles cannot be fully exerted. [0003] In view of this, the present invention is proposed....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/14
CPCC03C8/14
Inventor 敖卫华丁浩孙思佳
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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