Research on sound absorption of flax fiber reinforced cork composite materials
To improve the sound absorption performance of cork composite materials,flax fiber was used as the reinforcing material and hot-pressing process was used to prepare flax fiber/cork composite materials.The transfer function method was used to test the acoustic performance of cork composite materials,the sound absorption coefficient was used as the evaluation standard,and the influence of factors such as hot pressing temperature,hot pressing pressure,material density,flax fiber content,and material thickness on the sound absorption performance of flax fiber/cork composite materials was explored.By comparing the results of different parameter combinations,it can be concluded that under the preparation conditions of hot pressing temperature 160℃,hot pressing pressure 6 MPa,hot pressing time 15 min,linen fiber content 10%,material density 0.4 g/cm3,and material thickness 15 mm,the composite material has the best sound absorption performance,with the highest sound absorption coefficient reaching 0.8 and an average sound absorption coefficient of 0.43.It can be used as a substitute for traditional soft wood boards for indoor sound absorption decorative panels.
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