公开(公告)号：WO2023018422A1

公开(公告)日：2023-02-16

申请号：PCT/US2021/046005

申请日：2021-08-13

Applicant: OCEANIT LABORATORIES, INC.

Inventor： POLLOCK, Jacob ,  RODRIGUEZ, Raphael ,  DAVIS, Bryce ,  BROWN, Erika ,  FOFANA, El Hadj

IPC: B29C39/00 ,  B29C70/02 ,  B32B5/14 ,  B32B5/16

Abstract: A sound attenuation material includes a plurality of particles, each having a core and an elastic or compliant coating around the core, and a matrix surrounding the plurality of particles, the matrix being less dense than the core. A method of manufacturing sound attenuating materials includes adding an elastic or compliant coating to core particles and drying the coating, mixing the coated core particles into a matrix material, and pouring the mixture into a mold. The core particles are denser than the matrix material.