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Method of fabricating hollow spheres, hollow spheres obtained thereby, and a sound absorber device making use thereof
Method of fabricating hollow spheres, hollow spheres obtained thereby, and a sound absorber device making use thereof
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机译:制造空心球的方法,由此获得的空心球以及利用其的吸声器装置
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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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