再生聚酯中空纤维基吸声材料的制备与性能  

Preparation and properties of regenerated polyester hollow fiber wikis for sound absorption

作　　者：相玉龙 郭静 管福成 李峰 杨强 狄纯秋 XIANG Yulong;GUO Jing;GUAN Fucheng;LI Feng;YANG Qiang;DI Chunqiu(School of Textile and Engineering,Dalian Polytechnic University,Dalian 116034,China;Functional Fiber and Its Composite Materials Engineering Technology Research Center in Liaoning Province,Dalian 116034,China)

机构地区：[1]大连工业大学纺织与材料工程学院,大连116034 [2]辽宁省功能纤维及复合材料功能技术中心,大连116034

出　　处：《复合材料学报》2023年第1期212-218,共7页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51773024,51373027);辽宁省创新团队基金(LT2017017);辽宁省自然科学基金(20180550429);中国化学纤维工业协会·绿宇基金(CCFA-LVYU-2019-02)。

摘　　要：随着环境污染问题的不断加剧,瓶片基再生聚酯纤维的开发和应用具有重要意义。本文以再生聚酯中空纤维和皮芯型热粘合纤维为原料,通过热风固结成型制备具有多尺度微孔的吸声材料,表征了聚酯中空纤维的结构与性能,此外采用驻波管法研究了中空纤维的线密度与吸声效果的关系,并提出了“多级”吸声理论。结果表明,线密度为10 D的中空纤维具有最大的中空度,最好的韧性,最优的吸声效果;吸声系数和降噪系数随厚度的增加线性增加,当厚度为2 cm时,降噪系数(NRC)大于0.5,有望成为理想的吸声材料。With the aggravation of environmental pollution,the development and application of recycled polyester fibers based on bottle chip is of great significance.In this paper,recycled polyester hollow fibers and skin core type heat-bonded fibers were used as raw materials to prepare sound absorbing materials with multi-scale micropores by hot air consolidation.The structure and properties of polyester hollow fibers were characterized.Standing wave tube method was used to study the relationship between linear density and sound absorbing effect of hollow fibers,and a"multistage"sound absorbing theory was proposed.The results show that the hollow fibers with the linear density of 10 D has the largest hollowness,the best toughness and the best sound absorption effect.The sound absorption coefficient and noise reduction coefficient increase linearly with the increase of thickness.When the thickness is 2 cm,the noise reduction coefficient(NRC)is greater than 0.5,which is expected to become an ideal sound absorption material.

关 键 词：聚酯中空纤维 结构特性 热风固结 吸声材料 降噪系数 吸声性能 

分 类 号：TQ341.9[化学工程—化纤工业] TB34[一般工业技术—材料科学与工程]