大连工业大学学报2026，Vol.45Issue(4)：279-284,6.DOI:10.19670/j.cnki.dlgydxxb.2026.0408
废旧涤棉纤维吸声复合材料的制备及性能
Preparation and properties of sound absorption composites from waste polyester/cotton fibers
摘要
Abstract
To address the difficulties in separating waste polyester/cotton fibers and the problem of noise pollution,waste polyester/cotton fibers and ethylene-vinyl acetate copolymer were used as raw materials,and a mixing-calendering and hot-press foaming technique was adopted.Materials with a thickness of 1 cm were prepared by single-factor experiments,and the effects of azodicarbonamide(AC)blowing agent content,waste polyester/cotton fibers mass fraction,hot-press pressure,hot-press time,and hot-press temperature on the sound absorption properties of the materials were investigated.The average sound absorption coefficients and noise reduction coefficients of each material were calculated for comprehensive analysis,and the optimal process parameters were determined as follows:AC blowing agent content of 4％,waste polyester/cotton fibers mass fraction of 10.00％,hot-press pressure of 3 MPa,hot-press time of 15 min,and hot-press temperature of 190℃.Under the optimal process conditions,the maximum sound absorption coefficient of the porous composite sound-absorbing material was found to reach 0.81,the average value was measured to be 0.32,the noise reduction coefficient was calculated as 0.25,and the sound absorption performance grade was evaluated to be Grade Ⅳ.关键词
废旧涤棉/吸声材料/混炼-热压发泡/多孔吸声Key words
waste polyester cotton/sound absorbing material/mixing-hot press foaming/porous sound absorption分类
轻工纺织引用本文复制引用
赵懿平,胡大仟,吕丽华..废旧涤棉纤维吸声复合材料的制备及性能[J].大连工业大学学报,2026,45(4):279-284,6.基金项目
大连市科技创新基金项目(2019J12SN71). （2019J12SN71）
