US 10,889,525 B2
Sound absorption material preparation method, sound absorption material and filling method thereof
Xiaodong Cao, Shandong (CN)
Assigned to Goertek Inc., Shandong (CN)
Appl. No. 15/757,814
Filed by Goertek Inc., Shandong (CN)
PCT Filed Nov. 19, 2015, PCT No. PCT/CN2015/095003
§ 371(c)(1), (2) Date Mar. 6, 2018,
PCT Pub. No. WO2017/035956, PCT Pub. Date Mar. 9, 2017.
Claims priority of application No. 2015 1 0560859 (CN), filed on Sep. 6, 2015.
Prior Publication US 2018/0354862 A1, Dec. 13, 2018
Int. Cl. C04B 38/06 (2006.01); H04R 1/28 (2006.01); G10K 11/162 (2006.01); G10K 11/172 (2006.01); H04R 31/00 (2006.01); C04B 111/52 (2006.01); H04R 9/06 (2006.01)
CPC C04B 38/0655 (2013.01) [C04B 38/0615 (2013.01); G10K 11/162 (2013.01); G10K 11/172 (2013.01); H04R 1/2803 (2013.01); H04R 31/00 (2013.01); C04B 2111/52 (2013.01); H04R 1/2888 (2013.01); H04R 9/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A sound absorption material preparation method, comprising the following steps:
S1, preparing a non-foamed material slurry, and mixing the slurry uniformly;
S2, producing a combustible material framework and a cover-shaped container according to a set structure, and placing the combustible material framework in the cover-shaped container;
S3, forming the non-foamed material slurry in the cover-shaped container to form a wet formed body, and separating the wet formed body from the cover-shaped container;
S4, drying the wet formed body to form a dry formed body; and
S5, calcining the dried formed body, wherein the combustible material framework is burned off during the calcining step to form connected channels with a three-dimensional structure in the sound absorption material,
wherein:
the connected channels with the three-dimensional structure corresponds to the combustible material framework,
the connected channels with the three-dimensional structure and the combustible material framework have the set structure, and
the connected channels with the three-dimensional structure is formed to propagate a sound air flow.