发明名称 |
Method of fabricating hollow spheres, hollow spheres obtained thereby, and a sound absorber device making use thereof |
摘要 |
A method of fabricating hollow spheres that involve cores in a mixer are covered by a polymeric binder; a first powder material is prepared in the form of an organic powder or a metal or mineral powder or fibers, and a second powder material that is can be decomposed by heat and/or that is soluble in a solvent; said powder materials are mixed together and added into the mixer; the resulting coated cores are dried; the coated cores are baking to destroy the cores and the second powder material, and to cross-link the binder so as to obtain hollow spheres with walls that are porous and perforated; optionally the spheres are immersed in a solvent; and said hollow spheres are subjected to mechanical piercing. Hollow spheres, and a sound-absorber device making use of them.
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申请公布号 |
US2005120826(A1) |
申请公布日期 |
2005.06.09 |
申请号 |
US20040994190 |
申请日期 |
2004.11.19 |
申请人 |
ATECA |
发明人 |
DELVERDIER OSMIN;VIE PHILIPPE |
分类号 |
B29C44/56;B29C67/20;C08J9/16;(IPC1-7):B29C67/20 |
主分类号 |
B29C44/56 |
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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