发明名称 |
Alumina fiber aggregate and its production method |
摘要 |
An alumina fiber aggregate comprising alumina short fibers whose average diameter is 4.0 to 10.0 mum and smallest diameter is not less than 3.0 mum, and a method of producing an alumina fiber aggregate which comprises spinning a spinning solution containing basic aluminum chloride, a silicon compound, an organic polymer and water by the blowing method, and calcining the obtained aggregate of alumina short fiber precursor, the spinning solution being one in which the aluminum/silicon ratio is 99/1 to 65/35 calculated as Al2O3/SiO2 ratio by weight, the concentration of basic aluminum chloride is 180 to 200 g/L and the concentration of the organic polymer is 20 to 40 g/L. The alumina short fibers in the alumina fiber aggregate are enlarged in diameter to suppress scattering of the fibers.
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申请公布号 |
US6746979(B2) |
申请公布日期 |
2004.06.08 |
申请号 |
US20030392941 |
申请日期 |
2003.03.20 |
申请人 |
MITSUBISHI CHEMICAL FUNCTIONAL PRODUCTS, INC. |
发明人 |
SHOJI MAMORU;IKEDA NORIO;SASAKI TOSHIAKI |
分类号 |
C04B35/622;C04B35/634;D01F9/08;D04H1/4209;D04H1/46;D04H1/498;D04H1/56;D04H1/72;D04H13/00;E04B1/72;E04B1/76;(IPC1-7):D01F6/00;C04B35/00 |
主分类号 |
C04B35/622 |
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