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Title:
軽量セラミック材料の製法
Document Type and Number:
Japanese Patent JP6312169
Kind Code:
B2
Abstract:
The present invention relates to a novel process for producing ceramic materials, in particular refractory materials having a reduced relative density. In particular, the invention relates to a process for producing light, refractory materials having non-contiguous pores based on shaped and unshaped materials. These materials can be used as working lining in high-temperature applications. The process is based on the production of spherical, closed and isolated pores in the microstructure of the material. The pores having a pore diameter which can be set in a targeted manner are generated by use of polymer particles, in particular polymethacrylates, in particular polymers or copolymers prepared by means of suspension polymerization, as pore formers which can be burnt out. The polymers or copolymers are present in the form of small spheres having a defined diameter. The introduction of isolated spherical pores allows the production of ceramic materials having a sometimes significantly reduced relative density and improved corrosion resistance and better mechanical strength compared to the prior art. The specific, closed pore system at the same time contributes to reducing the thermal conductivity of the ceramic materials. In addition, the novel process has the advantage that there is no risk of formation of undesirable black cores, even in the production of thick-walled ceramic products.

Inventors:
Tadeusch von Ryumon Lipinski
Bruno Keller
Frank viceman
Peter Neugebauer
Root cairnque
Diak poppe
Application Number:
JP2016208628A
Publication Date:
April 18, 2018
Filing Date:
October 25, 2016
Export Citation:
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Assignee:
Evonik Roehm GmbH
International Classes:
C04B38/06; F27D1/00
Domestic Patent References:
JP2005119965A
JP2008247630A
JP2003040688A
JP2014532027A
JP8059367A
JP4367578A
JP2007022879A
JP2001240480A
JP2003146773A
JP2002316869A
JP2006036600A
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima