公开(公告)号：US20240379087A1

公开(公告)日：2024-11-14

申请号：US18691974

申请日：2022-08-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicole D. Petkovich ,  Yongbeom Seo ,  Tongyang Shi ,  Michael R. Berrigan ,  Michelle M. Mok ,  Seungkyu Lee ,  Jonathan H. Alexander

IPC: G10K11/165

Abstract: An acoustic article (10) comprising a porous layer (14) and an acoustic absorbing filler (18) embedded within the porous layer, and methods of making the same. The acoustic absorbing filler includes agglomerates comprising porous amorphous silica particles and a binder. The acoustic absorbing filler has a median sieved particle size of 100 i.un to 2000 i.un. The acoustic article has a normal incidence acoustic absorption of no less than 0.09 a at 400 Hz.

公开(公告)号：US20230395056A1

公开(公告)日：2023-12-07

申请号：US18031854

申请日：2021-10-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicole D. Petkovich ,  Michelle M. K. Mok ,  Michael R. Berrigan ,  Jonathan H. Alexander ,  Samantha D. Smith ,  Yongbeom Seo ,  Daniel E. Johnson

IPC: G10K11/168 ,  G10K11/165

CPC classification number: G10K11/168 ,  G10K11/165

Abstract: Provided herein are acoustic articles (100) that include a porous layer (102) and heterogeneous filler (104) received in the porous layer. The heterogeneous filler is substantially non-porous and present in an amount of from 0.25% to 7% by volume relative to the total volume of the porous layer and has a specific surface area of from 0.01 m2/g to 1 m2/g. The acoustic article has a flow resistance of from 500 MKS Rayls to 12,000 MKS Rayls.

公开(公告)号：US20230326443A1

公开(公告)日：2023-10-12

申请号：US18044473

申请日：2021-09-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Nicole D. Petkovich ,  Michael R. Berrigan ,  Yongbeom Seo ,  Andrew J. Hatch ,  Kevin A. Frankel ,  Seungkyu Lee

IPC: G10K11/165 ,  G10K11/168 ,  D04H3/16 ,  D04H3/007 ,  D06M23/08 ,  D06M11/74 ,  D04H1/56 ,  D04H1/413 ,  D04H1/4291

CPC classification number: G10K11/165 ,  G10K11/168 ,  D04H3/16 ,  D04H3/007 ,  D06M23/08 ,  D06M11/74 ,  D04H1/56 ,  D04H1/413 ,  D04H1/4291 ,  D10B2321/022 ,  D06M2101/20

Abstract: An acoustic absorbing filler, the acoustic absorbing filler comprising agglomerates comprising a first phase comprising a plurality of porous particulates and a second phase comprising a binder; wherein the acoustic absorbing filler has a median sieved particle size of from 100 micrometer to 700 micrometers and a specific surface area of from 50 m2/g to 900 m2/g; wherein the acoustic absorbing filler has a normal incidence acoustic absorption of no less than 0.20 alpha at 400 Hz.

公开(公告)号：US20230323131A1

公开(公告)日：2023-10-12

申请号：US18024472

申请日：2021-09-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Yongbeom Seo ,  Matthew H. Frey ,  Jacob P. Podkaminer ,  Victor Ho ,  Samuel J. Carpenter ,  Audrey S. Forticaux ,  Lalitha V. N. R. Ganapatibhotla ,  Taisiya Skorina ,  Jeremy M. Higgins ,  Yangbin Chen

IPC: C09C1/40 ,  C09C3/06

CPC classification number: C09C1/407 ,  C09C3/06 ,  C01P2006/16

Abstract: A decorated particle comprises a single inorganic particle core having an uneven outer surface with a plurality of crevices and an average particle diameter of 20 to 150 microns. A binder retaining decorating particles is disposed on at least a portion of the outer surface of the inorganic particle core and fills the crevices. The decorating particles have an average particle diameter of 0.05 to 10 microns. A method of making decorated particles is also disclosed.