Binder system for honeycomb ceramic bodies and method for producing honeycomb bodies

A binder system and binder technology, used in ceramic products, manufacturing tools, ceramic extrusion dies, etc., to achieve the effects of low exothermic strength, reduced firing cracks, and high hardness

Inactive Publication Date: 2001-07-18
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although this Chalasani reference provides a significant advance in the process capability to form complex, thin-walled ceramic honeycombs by extrusion, the addition of this non-solvent (such as light mineral oil) to the powder is slowing down "burn-out" or Additional problems arise during adhesive removal

Method used

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  • Binder system for honeycomb ceramic bodies and method for producing honeycomb bodies
  • Binder system for honeycomb ceramic bodies and method for producing honeycomb bodies
  • Binder system for honeycomb ceramic bodies and method for producing honeycomb bodies

Examples

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Embodiment 1-11

[0049] Various inorganic powder batch mixtures suitable for making cordierite ceramic bodies are listed in Table 1, expressed in parts by weight. Each of Compositions 1-11 was prepared by compounding and dry blending together the components of the specified inorganic mixture as shown in Table I; Y and Z differ in the fine and coarse oxidation of the alumina component aluminum ratio. The amount of binder system listed in Table II was then added to each inorganic dry blend and further mixed to form a plasticized ceramic batch mixture. Two of the 11 compositions were used for comparison. Each of the 11 different plasticized ceramic batch mixtures contained 100 parts by weight inorganic powder batch mixture and varying amounts of binder system (up to 39.5 parts by weight), as shown in Table II. Table III lists various non-solvent (ie, various types of oil) components used in the examples, indicated by symbols A-F. The carbon chain distributions and 90% recovery distillation tem...

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PUM

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Abstract

A binder system for use in the formation of ceramic or other powder-formed greenware comprising a binder, a solvent for the binder, a surfactant, and a component that is non-solvent with respect to the binder and solvent. The non-solvent component exhibits a lower viscosity than the solvent when containing the binder and comprises at least a portion of an organic liquid having a 90 % recovered distillation temperature of no greater than about 225 DEG C and more preferably less than 220 DEG C. The invention also discloses a process of forming and shaping plasticized powder mixtures and a process for forming ceramic articles utilizing the binder system.

Description

Background of the invention [0001] 1. field of invention [0002] The present invention relates generally to binder systems for use in the field of shaped ceramics and ceramic bodies and methods of making ceramic or honeycomb ceramic bodies using the binder systems. More particularly, the present invention relates to a binder system comprising a low molecular weight oil-based non-solvent and the use of the binder system in a method of manufacturing a honeycomb ceramic body. [0003] 2. Description of related technologies [0004] Binders and binder systems used to produce articles from powder materials such as ceramic granular materials must meet a number of requirements. For example, binders and binder systems must be compatible with ceramic materials to provide flowable dispersions of ceramic materials with higher loadings in the binder. In addition, the "green" preform produced by shaping a dispersion of ceramic powder in a binder should have sufficient strength to ena...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/20C04B35/195C04B35/622C04B35/632C04B38/00
CPCC04B35/632C04B38/0006C04B2111/00129C04B35/622C04B35/195B28B3/269
Inventor D·M·比尔D·沙拉萨尼C·J·玛拉凯
Owner CORNING INC
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