Preparation method of BaTiO3 ceramic sheet

A technology for ceramic sheets and grinding sheets is applied in the field of preparation of electronic components, which can solve the problems of high power attenuation, poor temperature coefficient and pressure stability of devices, and achieve the effects of high heating efficiency, low temperature coefficient and improved convenience.

Inactive Publication Date: 2018-08-10
AUPU HOME STYLE CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention and the technical task proposed are to overcome existing BaTiO 3 The preparation method of the base ceramic sheet has the defects of high power attenuation, poor temperature coefficient and pressure stability of the device, and a BaTiO with higher performance and higher Curie temperature is provided. 3 Ceramic BaTiO 3 Preparation method of ceramic sheet

Method used

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  • Preparation method of BaTiO3 ceramic sheet

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Effect test

Embodiment 1

[0034] (1) BaCO 3 , CaCO 3 、TiO 2 The first wet ball milling with PbO is evenly mixed, and the slurry is obtained by plate pressure filtration. The slurry is placed in an oven at 110-120°C for the first drying to form the first drying material, and the first drying material is in an oven at 1000-1100°C Medium heat preservation for 2 to 3 hours and pre-sintering to form a pre-synthesized material;

[0035] (2) Add graphene, Y 2 o 3 , Nb 2 o 5 and sintering agent, carry out the second wet ball milling, and after stirring and plate pressure filtration, carry out the second drying in an oven at 110-120°C to form the secondary drying material, and add equivalent The granulated material is obtained by granulating 0.1mol / L polyvinyl alcohol aqueous solution binder with 2 to 7% of the mass of the secondary drying material. The granulated material is selected from the blank screened by a 60-mesh screen, and then formed, Fired, lapped, and coated with electrodes.

[0036] Among ...

Embodiment 2

[0051] (1) BaCO 3 , CaCO 3 、TiO 2 The first wet ball milling with PbO is evenly mixed, and the slurry is obtained by plate pressure filtration. The slurry is placed in an oven at 110-120°C for the first drying to form the first drying material, and the first drying material is in an oven at 1000-1100°C Medium heat preservation for 2 to 3 hours and pre-sintering to form a pre-synthesized material;

[0052] (2) Add graphene, Y 2 o 3 , Nb 2 o 5 and sintering agent, carry out the second wet ball milling, and after stirring and plate pressure filtration, carry out the second drying in an oven at 110-120°C to form the secondary drying material, and add equivalent The granulated material is obtained by granulating 2-7% of the 0.5mol / L polyvinyl alcohol aqueous solution binder of the mass of the secondary drying material. The granulated material is selected from the blank screened by a 60-mesh screen, and then formed, Fired, lapped, and coated with electrodes.

[0053] Among t...

Embodiment 3

[0068] (1) BaCO 3 , CaCO 3 、TiO 2 The first wet ball milling with PbO is evenly mixed, and the slurry is obtained by plate pressure filtration. The slurry is placed in an oven at 110-120°C for the first drying to form the first drying material, and the first drying material is in an oven at 1000-1100°C Medium heat preservation for 2 to 3 hours and pre-sintering to form a pre-synthesized material;

[0069] (2) Add graphene, Y 2 o 3 , Nb 2 o 5 and sintering agent, carry out the second wet ball milling, and after stirring and plate pressure filtration, carry out the second drying in an oven at 110-120°C to form the secondary drying material, and add equivalent The granulated material is obtained by granulating 2-7% of the 1mol / L polyvinyl alcohol aqueous solution binder of the mass of the secondary drying material. The granulated material is selected from the blank screened by a 60-mesh screen, and then formed and fired. into, through the grinding process, and then coated ...

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Abstract

The invention discloses a preparation method of a BaTiO3 ceramic sheet, and belongs to electronic component preparation technologies. Components prepared by means of an existing BaTiO3-grouped ceramicsheet preparation method is higher in power attenuation and poorer in temperature coefficient and pressure resistance stability. Barium titanate ceramic is taken as a main body, complementary dopingof Nb5+ in lead titanate and barium titanate groups is achieved through multi-donor doping of Y3+ and Nb5+, and the total amount of doping is certain; the multi-donor doping of Y3+ and Nb5+ in the barium titanate group is achieved, and graphene is added to improve the heating uniformity and the heating rate of the ceramic sheet. The BaTiO3 ceramic sheet prepared by means of the method has the advantages that the heating efficiency is high, and higher voltage and temperature coefficient and lower power attenuation can be withstood under a static state. The convenience of BaTiO3 ceramic sheet production can be improved, and a prepared PTC ceramic sheet is more suitable for using in residential heating equipment.

Description

technical field [0001] The invention belongs to the preparation technology of electronic components, in particular to a BaTiO 3 A method for preparing ceramic sheets to obtain higher performance and higher Curie temperature (referring to the temperature at which the material can change between ferromagnets and paramagnets, that is, the phase transition temperature at which ferromagnets transform from ferromagnetic phases to paramagnetic phases) BaTiO 3 Ceramics. Background technique [0002] With the continuous advancement of science and technology, the quality requirements for electronic products are getting higher and higher, and the investment in new materials is also increasing. BaTiO 3 PTC-based ceramics have been widely used in household appliances, communications and other fields. [0003] Thermosensitive materials can be divided into positive temperature coefficient (referred to as PTC) thermistor materials and negative temperature coefficient (referred to as NTC)...

Claims

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Application Information

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IPC IPC(8): C04B35/468
CPCC04B35/468C04B2235/3217C04B2235/3225C04B2235/3251C04B2235/3267C04B2235/3296C04B2235/3418C04B2235/425C04B2235/442
Inventor 张心予曾海平水兴瑶
Owner AUPU HOME STYLE CORP LTD
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