Multilayered-structure porous ceramic sound-absorbing material and preparing method thereof

• Main Authors: KANG JIAN, GAO LILING, ZHANG YUSUI, ZHU WENHAO, XU JINGJING
• Format: Patent
• Language: English
• Published: 11.11.2015
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

The invention discloses a multilayered-structure porous ceramic sound-absorbing material and a preparing method thereof. The multilayered-structure porous ceramic sound-absorbing material is prepared by perlite, shale, coal ash, foaming agents and binding agents. Compared with a traditional sound-absorbing material, the multilayered-structure porous ceramic sound-absorbing material has the following obvious advantages that the material is of a multilayered structure of different thicknesses and different hole diameters, and the sound-absorbing performance of a product is greatly improved by changing the hole diameters and increasing the viscous resistance of sound waves; the preparing raw materials are low in cost, easy to purchase and high in cost performance; the raw material loss in the preparing process is reduced, and the product conversion rate is high; the preparing method is low in cost and high in controllability, and large-scale production is easy to realize.