Sound-absorbing and heat-insulating honeycomb composite board and preparation method thereof

• Main Authors: ZHOU LI, LU CHENGYONG, ZHANG HENGYUAN, ZHANG KAIXIANG, DUAN PENGFEI, YING SONGSONG, LYU CHAOMU, DENG LIJIAN, CHEN JIAYANG
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2023
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; NON-WOVEN FABRICS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TEXTILES; TRANSPORTING; TRIMMINGS; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WADDING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention discloses a sound-absorbing and heat-insulating honeycomb composite board and a preparation method thereof. The sound-absorbing and heat-insulating honeycomb composite board sequentially comprises an anti-seepage and scratch-resistant layer, a breathable and sound-absorbing bonding layer, a sound-absorbing layer, a bonding layer, a sound-absorbing and heat-insulating layer, a bonding layer, a sound-absorbing layer, a breathable and sound-absorbing bonding layer and an anti-seepage and scratch-resistant layer from top to bottom, the preparation process comprises the following steps: performing opening, mixing, carding, lapping and needling reinforcement on thermoplastic matrix resin fibers, hollow fibers and reinforced fibers according to a certain proportion to obtain fiber-reinforced thermoplastic felt, and preheating, thermally bonding and pressurizing the fiber-reinforced thermoplastic felt and a plastic honeycomb core of which the surface is uniformly scattered with nano aerogel particles th