A kind of ceramic carrier with honeycomb structure and preparation method thereof

A ceramic carrier and honeycomb technology, which is applied in the field of cordierite honeycomb ceramic carrier, can solve the problems of reduced wall thickness, poor deformation resistance of mud blanks, and increased extrusion pressure, and achieves prevention of pore deformation, good ductility, The effect of good rheological properties

Active Publication Date: 2022-03-11
JIANGSU PROVINCE YIXING NONMETALLIC CHEM MACHINERY FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Reduce the wall thickness of the honeycomb ceramic carrier; mainly to reduce the groove width of the mold, but at the same time put forward new requirements for the use of mud; the problems that need to be solved are the reduction of the carrier wall thickness and the resistance of the mud to deformation during extrusion molding At the same time, the wall thickness is reduced, and the extrusion pressure is bound to increase during extrusion molding. Using the existing mud material in the extruded mud billet has poor deformation resistance, and the mud billet channel is deformed. It is necessary to extrude a thin-walled carrier Improve the anti-deformation ability of the mud and improve the shape retention of the mud

Method used

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  • A kind of ceramic carrier with honeycomb structure and preparation method thereof
  • A kind of ceramic carrier with honeycomb structure and preparation method thereof
  • A kind of ceramic carrier with honeycomb structure and preparation method thereof

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Effect test

Embodiment 1

[0029] A kind of ceramic carrier of honeycomb structure, the raw material composition of described ceramic carrier is:

[0030] Inorganic raw materials: talc 39wt%, kaolin 15wt%, α-alumina 14wt%, aluminum hydroxide 18wt%, quartz 14wt%;

[0031] Organic raw materials (mass percentage is calculated by adding the weight of inorganic raw materials): 7.5wt% composite cellulose ether, 6wt% polyalphaolefin, 0.5wt% tall oil, 2.5wt% potassium laurate; the composite cellulose ether is 30wt% Carboxymethyl cellulose and 70 wt% hydroxypropyl methyl cellulose are obtained through the modification of modifier 2-hydroxyethyl acrylate; the amount of modifier is 5 wt% based on the total amount of cellulose;

[0032] Deionized water (calculated based on the total weight of the ingredients): 20wt%;

[0033] The above-mentioned raw materials are mixed into mud by a mixer, and then the mud is smelted, extruded, dried by microwave, and then fired at a high temperature to the honeycomb ceramic carri...

Embodiment 2

[0036] A kind of ceramic carrier of honeycomb structure, the raw material composition of described ceramic carrier is:

[0037] Inorganic raw materials: talc 39wt%, kaolin 15wt%, α-alumina 14wt%, aluminum hydroxide 18wt%, quartz 14wt%;

[0038] Organic raw materials (mass percentage is calculated by adding the weight of inorganic raw materials): 7.5wt% composite cellulose ether, 6wt% polyalphaolefin, 0.5wt% tall oil, 2.5wt% potassium laurate; the composite cellulose ether is 40wt% Carboxymethyl cellulose and 60 wt% hydroxypropyl methyl cellulose are obtained through the modification of modifier 2-hydroxyethyl acrylate; the amount of modifier is based on the total amount of cellulose plus 5 wt%;

[0039] Deionized water (calculated based on the total weight of the ingredients): 20wt%;

[0040] The above-mentioned raw materials are mixed into mud by a mixer, and then the mud is smelted, extruded, dried by microwave, and then fired at a high temperature to the honeycomb ceramic ...

Embodiment 3

[0043] A kind of ceramic carrier of honeycomb structure, the raw material composition of described ceramic carrier is:

[0044] Inorganic raw materials: talc 39wt%, kaolin 15wt%, α-alumina 14wt%, aluminum hydroxide 18wt%, quartz 14wt%;

[0045] Organic raw materials (mass percentage is calculated by adding the weight of inorganic raw materials): 7.5wt% of composite cellulose ether, 6wt% of polyalphaolefin, 0.5wt% of tall oil, 2.5wt% of potassium laurate; the composite cellulose ether is 50wt% Carboxymethyl cellulose and 50 wt% hydroxypropyl methyl cellulose are obtained through the modification of modifier 2-hydroxyethyl acrylate; the amount of modifier is based on the total amount of cellulose plus 5 wt%;

[0046] Deionized water (calculated based on the total weight of the ingredients): 20wt%;

[0047] The above-mentioned raw materials are mixed into mud by a mixer, and then the mud is smelted, extruded, dried by microwave, and then fired at a high temperature to the honeyc...

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Abstract

The invention discloses a ceramic carrier with a honeycomb structure, which uses cordierite as a structural material, and the wall thickness of the ceramic carrier is less than 0.10 mm; the raw material composition of the ceramic carrier is: inorganic raw materials: 39 wt% of talc; 15 wt% of kaolin 14wt% of α-alumina; 18wt% of aluminum hydroxide; 14wt% of quartz; Potassium laurate 2.5wt%; deionized water: calculated based on the total weight of ingredients, the dosage is 19-21wt%. The compound cellulose ether used in the invention can improve the anti-deformation ability of the mud in the extrusion process and improve the molding performance of the mud.

Description

technical field [0001] The invention relates to the technical field of honeycomb ceramic production, in particular to a cordierite honeycomb ceramic carrier with ultra-thin walls. Background technique [0002] As emission regulations become more and more stringent, the newly promulgated "National VI" emission standards have lower limits for almost all pollutants than the current "National V" emission standards; for diesel engines, especially at low temperature The CO and THC pollutants in the exhaust after cold start are lower, and the NOx limit requirements are also increased. In this way, in the diesel engine aftertreatment system, the initial working temperature of the catalyst must be lower, and the catalyst should have a higher catalytic activity at a lower temperature. Research on catalyst supports. For the carrier, it is necessary to provide a higher specific surface area to coat more catalysts, and less actual volume of the carrier to shorten the catalyst onset tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B35/20C04B35/622C04B35/632C04B35/634C04B35/636
CPCC04B38/0006C04B35/20C04B35/622C04B35/6365C04B35/632C04B35/63408C04B2235/3217C04B2235/3418C04B2235/349C04B2235/3218C04B2235/9607
Inventor 曾建宏冯家迪
Owner JIANGSU PROVINCE YIXING NONMETALLIC CHEM MACHINERY FACTORY
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