Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Of inorganic materials
Reexamination Certificate
2006-04-25
2006-04-25
Vincent, Sean (Department: 1731)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Of inorganic materials
C264S044000
Reexamination Certificate
active
07033527
ABSTRACT:
Disclosed herein are a highly porous ceramic having a high porosity of not less than 60% and a pore density of not less than 108pores/cm3fabricated from expandable microspheres and a preceramic polymer, and a method for fabricating highly porous ceramic. The method for fabricating highly porous ceramic from expandable microspheres and a preceramic polymer comprises the steps of: homogeneously mixing a preceramic polymer powder and expandable hollow microspheres, if necessary, a ceramic powder, and molding the mixture to form a molded body; heating the molded body to expand it; curing the expanded molded body; and pyrolyzing the cured molded body.Since the highly porous ceramic has a higher porosity and pore density than conventional porous ceramics, it can be suitably used for various high temperature structure materials, kiln furniture, bulletproof materials, shock-absorbing materials, insulating materials, refractory materials, lightweight structure materials, etc.
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Kim Hai-Doo
Kim Shin-Han
Kim Young-Wook
Park Chul-B
Cooper & Dunham LLP
Korea Institute of Machinery and Materials
Vincent Sean
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