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Ultrafine hydrothermal barium titanate organic slurry and preparation method thereof, and ceramic diaphragm

A technology of ceramic diaphragm and barium titanate, which is applied in the field of materials, can solve problems such as cost waste and casting out, and achieve the effects of good compatibility, high uniformity, and simple and convenient preparation methods

Active Publication Date: 2021-12-07
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the slurry formula system is not suitable, it will not be possible to cast a good-quality thin-layer medium with ultra-fine hydrothermal barium titanate, which is very likely to cause a large cost waste

Method used

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  • Ultrafine hydrothermal barium titanate organic slurry and preparation method thereof, and ceramic diaphragm
  • Ultrafine hydrothermal barium titanate organic slurry and preparation method thereof, and ceramic diaphragm
  • Ultrafine hydrothermal barium titanate organic slurry and preparation method thereof, and ceramic diaphragm

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preparation example Construction

[0049] In a second aspect, the present invention provides a method for preparing an ultrafine hydrothermal barium titanate organic slurry, comprising the steps of:

[0050] First disperse the ultra-fine hydrothermal barium titanate ceramic powder, trichlorethylene, absolute ethanol and fish oil in the formulated amount, and then mix with the formulated amount of polyether type defoamer, styrene glycol, octyl titanic acid The ester and vinyl binders were dispersed for the second time to prepare ultrafine hydrothermal barium titanate organic slurry.

[0051] The preparation method of the ultrafine hydrothermal barium titanate organic slurry provided by the invention is simple and convenient, the prepared ultrafine hydrothermal barium titanate organic slurry is stable, and the ultrafine hydrothermal barium titanate is evenly dispersed.

[0052] In some preferred embodiments, the first dispersion and the second dispersion are carried out in a sand mill. The present invention does...

Embodiment 1

[0066] An ultrafine hydrothermal barium titanate organic slurry, comprising 38.8 parts of ultrafine hydrothermal barium titanate (HBT-015), 33 parts of an organic solvent system (trichlorethylene: absolute ethanol = 52.0%: 48.0%), Herring fish oil 1.9 parts, phenylethylene glycol 0.12 parts, octyl titanate 0.18 parts, BH-11PVB glue 26.5 parts and polyether type defoamer 0.03 parts.

[0067] The preparation method is as follows:

[0068] Add the superfine hydrothermal barium titanate ceramic powder, trichlorethylene, absolute ethanol and fish oil into the cavity of the horizontal sand mill for dispersion. Put 0.65mm zirconium balls in the cavity in advance, and the zirconium balls The volume filling rate reaches 50%, the dispersion time is set to 8H, the pump speed is set to 340r / min, the spindle speed is 2300r / min on the upper half shaft, and 1200r / min on the lower half shaft.

[0069] Then add the polyether defoamer, styrene glycol, octyl titanate and BH-11PVB glue of the fo...

Embodiment 2- Embodiment 10

[0071]Embodiment 2-Example 10 all provide an ultrafine hydrothermal barium titanate organic slurry, and the distribution ratio of each component is shown in Table 1. The preparation method is the same as in Example 1.

[0072] Table 1

[0073]

[0074]

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Abstract

The invention provides superfine hydrothermal barium titanate organic slurry and a preparation method thereof, and a ceramic diaphragm, and relates to the technical field of materials. The superfine hydrothermal barium titanate organic slurry provided by the invention comprises superfine hydrothermal barium titanate, an organic solvent system, fish oil, phenyl glycol, octyl titanate, a vinyl adhesive and a polyether defoaming agent in a specific ratio, wherein the organic solvent system consists of trichloroethylene and absolute ethyl alcohol in a specific ratio; the fish oil is a dispersant; and phenyl glycol and octyl titanate are used as plasticizers. All the components in the superfine hydrothermal barium titanate organic slurry cooperate with one another, the slurry is good in stability, and superfine hydrothermal barium titanate is evenly dispersed; the slurry can be used for preparing the ceramic diaphragm with a thickness of 2 micrometers or below; and the prepared ceramic diaphragm is smooth in surface, almost free of defects (pinholes, bubbles, stripes and the like), high in uniformity, stable in strength and good in stripping degree.

Description

technical field [0001] The invention relates to the field of material technology, in particular to an ultrafine hydrothermal barium titanate organic slurry, a preparation method thereof, and a ceramic diaphragm. Background technique [0002] The hydrothermal method is currently the mainstream method for preparing ultrafine barium titanate. With the development of chip multilayer ceramic capacitors (MLCC) towards thinner layers, higher reliability, and miniaturization, hydrothermal barium titanate will gradually replace solid-state capacitors. Phase barium titanate has become the mainstream in the market. Compared with the barium titanate prepared by the solid-phase method, the barium titanate prepared by the hydrothermal method has small particles, high uniformity, and good particle shape, but the reliability is biased and the preparation cost is high. Generally, the barium titanate is prepared by the solid-phase method. 4-6 times the cost. Therefore, the availability of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/622C04B35/632
CPCC04B35/468C04B35/622C04B35/632C04B2235/48C04B2235/6025C04B2235/5445Y02E60/10
Inventor 朱恒张凯马艳青宋锡滨孙文君尚树芳李春亭崔树芹
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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