The invention discloses PET (
polyethylene glycol terephthalate)
fiber / mulberry
bark composite sound absorbing cotton, which comprises the following ingredients in parts by weight: 70 to 80 parts of PET fibers, 40 to 50 parts of mulberry
bark fibers, 10 to 15 parts of emulsifying agents OP-9, 5 to 10 parts of peregal O-25, 80 to 100 parts of PP (
propene polymer), 30 to 40 parts of EVA (
ethylene vinyl acetate), 15 to 20 parts of nanometer barite
powder, 10 to 15 parts of modified kieselguhr, 2 to 3 parts of
stearic acid, 5 to 8 parts of dioctyl
phthalate, 4 to 6 parts of
decabromodiphenyl ether, 2 to 3 parts of tristearin, 1 to 2 parts of
vinyltriethoxysilane, 2 to 3 parts of
calcium stearate, 1 to 2 parts of dibasic
lead phosphate, 0.5 to 1.5 parts of anti-
ageing agents OD (octyl decyl) and 1 to 2 parts of antioxidants DLTP (dilauryl thiodipropionate). The sound absorbing cotton prepared by the invention has the advantages that the appearance evenness is good, the thickness is uniform, the hand feeling is soft, the product bonding degree is good, the tensile performance is high, the sound absorbing performance is excellent, the
flame retardant effect is good, and the like.