▎ 摘　　要

NOVELTY - Multifunctional cotton-based sound-absorbing felt has porous non-woven liner (1) set in the middle, two ends of the porous non-woven liner is provided with a damping vibration damping block (2), the outer side of the damping vibration damping block is provided with a honeycomb elastic resin net (3), the honeycomb elastic resin net is inserted with the aluminum alloy wire (4), the damping vibration damping block and the honeycomb elastic resin net are fixedly connected. The aluminum alloy wire passes through the regenerative cotton fiber cloth is to seal the cotton base sound absorbing felt. The porous non-woven liner includes 30-45 wt.% regenerated cotton staple fiber, 30-40 wt.% rare earth-graphene composite modified synthetic epoxy resin, 5-15 wt.% graphene modified poly-p-phenylene benzobisoxazole ultra-short fiber, 5-10 wt.% graphene modified polyimide ultra short fiber, 5-10 wt.% ceramic microshort fiber, 2-5 wt.% organic rare earth, and 2-5 wt.% graphene oxide. USE - The multifunctional cotton-based sound-absorbing felt is useful for automotive interiors, and can also be used for manufacturing sound insulation effect in wall or door and window structure, interlayer between instrument table and engine at front wall of automobile, and fire wall. ADVANTAGE - The multifunctional cotton base sound absorbing felt is capable of effectively sound-absorbing and sound-insulating, and has high-elasticity, and improved flexibility, flexibility, and utilization rate of the waste. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing multifunctional cotton-based sound-absorbing felt comprising (a) accurately weighing the raw materials, and mixing the graphene-modified polyparaphenylene benzobisoxazole ultra-short fiber, graphene-modified polyamide ultra-short fibers, ceramic ultra-short fibers, organic rare earths, and graphene oxide, mixing uniformly and pulverizing, adding regenerated cotton short fiber for secondary mixing and dispersed evenly, and the liquid rare earth-graphene composite modified synthetic epoxy resin is added to it, stirring in an environment of 80-150°C until uniformly mixed, and then porous-bonded in the mold Water-cooled solidification molding, (b) mixing the raw materials of the vibration damping strip (2) evenly and transferring them to the kneader, passing the raw materials through a 100-200 mesh sieve and transfer them to the mixer, setting the mixing temperature to 160-220°C, and the mixing time to 15-250 minutes, (c) hot-pressing an elastic resin sheet at 150-200°C to obtain the honeycomb elastic resin net, the honeycomb elastic resin net stitching, so that the porous non-woven liner, the vibration damping strip (2), and the honeycomb elastic resin net (3) are closely fitted and connected, and (4) laying the multi-layer structure with the recycled cotton fiber cloth and cutting it into a suitable size and shape, and running the aluminum alloy wire through the recycled cotton fiber cloth on both sides, edge sealing is carried out on the multi-layer structure to ensure that the recycled cotton fiber cloth is closely attached to the multi-layer structure, and the thread ends of the aluminum alloy wires are embedded in the multi-layer structure inside the cotton-based sound-absorbing felt. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional structure schematic diagram of the multifunctional cotton-based sound absorbing felt for automobile interior trim. 1Damping damping base material 2Damping vibration damping block 3Elastic resin net 4Aluminium alloy wire 5Regenerative cotton fibre cloth