发明名称 |
POROUS, FIRED CERAMIC FOAM, ITS MANUFACTURING PROCESS AND ITS USE |
摘要 |
A method of manufacturing a porous ceramic part, comprising the following steps in succession: a) preparing a mixture M containing a ceramic powder in suspension, at least one gelling agent and at least one foaming agent, at a mixing temperature which is higher than the gelling temperature of the gelling agent; b) shearing the mixture M at a foaming temperature which is higher than the gelling temperature, to obtain a foam; c) gelling the foam by cooling the mixture M to a temperature below the gelling temperature of the gelling agent; and d) drying the gelled foam to obtain a perform. According to the invention, a stabilizing agent is added to the mixture M, which agent has an instantaneous viscosity, in Pa·s, that increases by a factor of at least ten when a shear rate of the stabilizing agent is reduced from 100 s-1 to 0. |
申请公布号 |
EP1778601(A1) |
申请公布日期 |
2007.05.02 |
申请号 |
EP20050793305 |
申请日期 |
2005.07.26 |
申请人 |
SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN |
发明人 |
HIS, CHRISTIAN;PRIGENT, SAMUEL;SCALABRINO, MATTEO;VILLERMAUX, FRANCELINE |
分类号 |
C04B35/624;C04B35/573;C04B38/00;C04B38/02 |
主分类号 |
C04B35/624 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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