Sound absorption material block and method made thereof
AssigneeAAG Microtech (Changzhou) Co., Ld.
InventorsZhongyang Wang, Jie Zhang, Hezhi Wang, Chao Wang
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Abstract
The present disclosure discloses a sound absorption material block having a gradient pore diameter from inside to outside, including: an outer portion having a first pore diameter; and an inner portion encapsulated by the outer portion, having a second pore diameter; the first pore diameter is in a range of 20-200 μm, the second pore diameter is in a range of 1-20 μm; the sound absorption material block has a thickness in a range of 0.5-5 mm. The sound absorption material block in the present disclosure has lower damping property and higher intensity.
Claims6
A sound absorption material block having a gradient pore diameter from inside to outside, comprising:
- an outer portion having a first pore diameter;
- and
- an inner portion encapsulated by the outer portion, having a second pore diameter;
- wherein
- the first pore diameter is in a range of 20-200 μm, the second pore diameter is in a range of 1-20 μm;
- the sound absorption material block has a thickness in a range of 0.5-5 mm;
- and further comprising 100 weight parts sound absorption powder, 3-15 weight parts binder, 1-10 weight parts thickener, and 80-200 weight parts water.
Dependencies are inferred from the claim text.