Low-frequency sound absorption rubber-based composite and preparation method thereof

• Main Authors: ZHUANG XINGMIN, ZHANG HUIPING, WANG KUN, YAN XIONG, SHEN JIAHUI
• Format: Patent
• Language: Chinese; English
• Published: 25.01.2019
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a low-frequency sound absorption rubber-based composite and a preparation method thereof. The low-frequency sound absorption rubber-based composite is characterized by comprising two layers of microperforated kapok fiber/ethylene-propylene-diene polymer composites and a middle layer arranged between the two layers of microperforated kapok fiber/ethylene-propylene--diene polymer composites; the middle layer is a fabric made of kapok fibers; the two layers of microperforated kapok fiber/ethylene-propylene-terpolymer composites are adhered to the middle layer; and the microperforated kapok fiber/ethylene-propylene-terpolymer composite is prepared from ethylene-propylene-diene polymer and the kapok fibers and is subjected to microperforating treatment. The preparationmethod comprises the following steps: by adopting the ethylene-propylene--diene polymer as a matrix material and the kapok fibers as a filler, performing mixing, vulcanization, cooling and microperforating to form a microperf