A honeycomb ceramic carrier with stable water absorption and preparation method thereof

A technology of honeycomb ceramic carrier and water absorption rate, applied in ceramic products, separation methods, clay preparation devices, etc.

Active Publication Date: 2021-07-02
晋城市富基新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the honeycomb ceramic carrier is improved on the mechanical properties, shock resistance, strength and the survival rate of the carrier, and the water absorption, another key index affecting the performance of the honeycomb ceramic carrier, is ignored. Rate

Method used

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  • A honeycomb ceramic carrier with stable water absorption and preparation method thereof
  • A honeycomb ceramic carrier with stable water absorption and preparation method thereof
  • A honeycomb ceramic carrier with stable water absorption and preparation method thereof

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Effect test

Embodiment 1

[0036] The preparation method of the honeycomb ceramic carrier with stable water absorption rate in the present invention comprises the following steps:

[0037] 1) 35 parts of talc, 10 parts of superfine α-alumina micropowder, 10 parts of kaolin, 5 parts of amorphous quartz, 3 parts of aluminum hydroxide micropowder, 2 parts of hydroxypropyl methylcellulose, 1 part of stearate , 2 parts of glycerin, 0.5 parts of lubricating oil, and 25 parts of pure water. The formula weighs each raw material, and then sieves the raw materials of talc, ultrafine α-alumina micropowder, kaolin, amorphous quartz and aluminum hydroxide micropowder, and then adds hydroxyl Propyl methylcellulose, stearate, the weight ratio of the precursor powder and the auxiliary agent is 85:10, mixed at high speed, the bulk density after mixing is 0.54g / cm 3 ;

[0038] 2) Continue to add glycerin, lubricating oil, and pure water to the mixture prepared in step 1), then knead, vacuum mud, the vacuum degree is 0.7...

Embodiment 12

[0056] A honeycomb ceramic carrier with stable water absorption and a preparation method thereof, which is composed of precursor powder and auxiliary agents. The ratio of powder and additives is shown in Table 4:

[0057]

[0058] 1) Take the bulk density as 0.42g / cm 3 , talc with particle size D50=12.2μm, bulk density is 0.72g / cm 3 , Ultrafine α-alumina micropowder with particle size D50=1.2μm, bulk density is 0.23g / cm 3 , flaky kaolin with particle size D50=2μm, bulk density is 0.42g / cm 3 , Amorphous quartz with a particle size of D50=3.7μm. The bulk density is 0.22g / cm 3 , aluminum hydroxide micropowder with a particle diameter of D50=1.2 μm, passing through a sieve with an aperture of 0.10 mm respectively, then adding stearate and hydroxypropyl methylcellulose, batching according to the ratio described in Table 1, and mixing at a high speed, Bulk density after mixing is 0.43g / cm 3 ;

[0059] 2) Add glycerin, lubricating oil, and pure water to the high-speed mixed ...

Embodiment 13

[0063] 1) Take the bulk density as 0.48g / cm 3 , talc with a particle size of D50 = 13.5μm, the bulk density is 0.78g / cm 3 , Ultrafine α-alumina micropowder with particle size D50=1.8μm, bulk density is 0.29g / cm 3 , flaky kaolin with particle size D50=3.5μm, bulk density is 0.45g / cm 3 , fused silica with a particle size of D50=4.2μm. The bulk density is 0.24g / cm 3 , the aluminum hydroxide micropowder of particle diameter D50=1.7 μ m, pass through the sieve cloth of 0.10mm respectively in aperture, add stearate, hydroxypropyl methylcellulose subsequently. Carry out batching by the ratio described in table 1, mix at high speed, Bulk density after mixing is 0.55g / cm 3 ,

[0064] 2) Add glycerin, lubricating oil, and pure water to the high-speed mixed powder for kneading, vacuum mud refining (vacuum degree 0.95 (due to the upper limit of the loose packing density of the carrier, the water absorption rate of the product will be too high, and the vacuum degree needs to be increas...

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Abstract

The invention discloses a honeycomb ceramic carrier with stable water absorption and a preparation method thereof. The ceramic precursor powder is composed of talc, alumina, kaolin, amorphous quartz and aluminum hydroxide micropowder. By controlling the bulk density and Particle size distribution, then add binder, lubricant, water retention agent to prepare plastic mud, through screening, high-speed mixing, mud adjustment, vacuum mud refining, molding, drying, high-temperature sintering to make honeycomb ceramic carrier, this The honeycomb ceramic filter prepared by the inventive method has stable water absorption, high mechanical strength, good thermal shock stability, low cost, simple operation and is suitable for industrialized production.

Description

technical field [0001] The invention relates to the technical field of honeycomb ceramic carriers, in particular to a honeycomb ceramic carrier with stable water absorption and a preparation method thereof. Background technique [0002] At present, the National V standard has been enforced in China, and the National VI standard has been implemented in some areas. Therefore, automobile engine manufacturers are required to carry out catalytic treatment on the exhaust gas before the exhaust gas is discharged. The quality stability of the cordierite honeycomb ceramic carrier, the key component of catalytic treatment, will affect the quality of the catalyst. Cordierite honeycomb ceramic carrier is the main carrier of gasoline vehicle, diesel vehicle catalyst, DOC, SCR and other catalysts. Its main function is to provide an effective surface and a suitable pore structure, maintain a high degree of dispersion of active phase components of the catalyst; enhance the mechanical stren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/195C04B38/06C04B38/00C04B35/622C04B35/64B28C1/16B01D53/94
CPCB01D53/94B28C1/16C04B35/195C04B35/622C04B35/64C04B38/0041C04B38/0645C04B2235/3217C04B2235/3218C04B2235/3418C04B2235/3445C04B2235/349C04B2235/656C04B2235/6567C04B2235/96C04B2235/9607C04B38/0006
Inventor 李军虎张金龙田建刚
Owner 晋城市富基新材料股份有限公司
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