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Alkali resistant ceramic coating material and preparation method thereof

A ceramic coating and alkali resistance technology, applied in the field of alkali resistance ceramic coating materials and their preparation, can solve the problems of high cost, complicated preparation process, insufficient bonding strength, etc., to improve mechanical strength, reduce production cost, Effects that improve composition quality

Inactive Publication Date: 2015-10-21
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These ceramic coatings can improve the alkali resistance of the surface of the sagger to a certain extent, but there are also the following problems: (1) The material preparation process is complicated, the cost is high, and the process performance is not good, which affects the performance of the alkali-resistant coating; (2) The matching degree of physical and chemical properties between the alkali-resistant coating and the sagger substrate is low, the bonding strength is not enough, the coating is easy to crack and fall off, and the actual number of repeated uses is still limited; (3) The firing temperature of the alkali-resistant coating is poorly adjustable, etc.

Method used

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  • Alkali resistant ceramic coating material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0033] A kind of anti-alkali ceramic coating material, the composition of raw material and batching are as Table 1 below (parts by mass):

[0034] Table 1 (Kg)

[0035] spinel 11.0 γ-LiAlO 2 15.0 spodumene 12.0 ZrO 2 1.0 α-Al 2 o 3 3.0 SiO 2 8.0

[0036] Composite phosphate glue (bonding agent) 19.0 Citric Acid Solution (30%) 31.0

[0037] Table 1 The spodumene in is "natural spodumene" (the same below).

[0038] The above-mentioned preparation method of an alkali-resistant ceramic coating material comprises the following steps: 1) selecting raw materials according to the ratio of the above-mentioned raw materials; 2) mixing the raw materials to obtain an alkali-resistant ceramic coating material.

[0039] When in use, the anti-alkali ceramic coating material (after the above raw materials are uniformly mixed to make a well-flowing ceramic slurry) is directly coated in various ways on the refractory ...

Embodiment 2

[0042] A kind of anti-alkali ceramic coating material, the composition of raw material and batching such as Table 2 below (parts by mass):

[0043] Table 2 (Kg)

[0044] spinel 10.0 γ-LiAlO 2 14.5 spodumene 14.0 ZrO 2 1.5 α-Al 2 o 3 3.0 SiO 2 7.0 Composite phosphate glue (bonding agent) 35.0 Citric Acid Solution (30%) 15.0 solid to liquid ratio 50.00:50.00

[0045] The above-mentioned preparation method of an alkali-resistant ceramic coating material comprises the following steps: 1) selecting raw materials according to the ratio of the above-mentioned raw materials; 2) mixing the raw materials to obtain an alkali-resistant ceramic coating material.

[0046] When in use, the anti-alkali ceramic coating material (after the above raw materials are uniformly mixed to make a well-flowing ceramic slurry) is directly coated in various ways on the refractory sagger to be used or the refractory sagger to be repai...

Embodiment 3

[0049] A kind of anti-alkali ceramic coating material, the composition of raw material and batching such as Table 3 below (parts by mass):

[0050] table 3 (Kg)

[0051] spinel 9.0 γ-LiAlO 2 18.0 spodumene 13.0 ZrO 2 2.0 α-Al 2 o 3 5.0 SiO 2 3.0 Composite phosphate glue (bonding agent) 20.0 Citric Acid Solution (30%) 30.0 solid to liquid ratio 50.00:50.00

[0052] The above-mentioned preparation method of an alkali-resistant ceramic coating material comprises the following steps: 1) selecting raw materials according to the ratio of the above-mentioned raw materials; 2) mixing the raw materials to obtain an alkali-resistant ceramic coating material.

[0053] When in use, the anti-alkali ceramic coating material (after the above raw materials are uniformly mixed to make a well-flowing ceramic slurry) is directly coated in various ways on the refractory sagger to be used or the refractory sagger to be repair...

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Abstract

The invention relates to an alkali resistant ceramic coating material and a preparation method thereof which are mainly applied in lithium battery production. The alkali resistant ceramic coating material is characterized by being formed by mixing the raw materials including composite powder, a binding agent and an additive, and the raw materials comprise, by mass, 50 parts of the composite powder, 10-40 parts of the binding agent and 15-40 parts of the additive. The alkali resistant ceramic coating material has the advantages that the coating is good in alkali resistance, capable of being fired in a wide temperature range and low in preparation cost.

Description

technical field [0001] The invention relates to an alkali-resistant ceramic coating material and a preparation method thereof, which are mainly used in the production of lithium batteries. Background technique [0002] At present, lithium batteries are more and more widely used, and have become an indispensable part of information technology, and the competition is becoming more and more fierce. In the production of lithium batteries, positive and negative electrode materials are one of the key materials. However, due to the erosion and volatilization of strong alkaline substances in the high-temperature synthesis of this type of material, it will have a great corrosion effect on the refractory material saggar of the fired synthetic material, resulting in a greatly shortened service life of the refractory saggar and affecting normal operation. The quality of the negative electrode material increases the manufacturing cost of the lithium battery. The main technical measure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 张强
Owner WUHAN UNIV OF TECH
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