摘要
为研制在中低频具有优异吸声性能的吸声材料,来应对日益严重的噪音污染,通过静电纺丝技术,将聚丙烯腈与纳米颗粒混合,制备出不同浓度的纳米颗粒掺杂的聚丙烯腈复合纳米纤维膜。采用SEM,XRD,FIRT,吸声系数测定纳米颗粒种类与含量对纳米纤维结构与性能影响。结果表明,加入GO后,纤维呈扭结和弯曲状,并呈网状结构,GNs会在纤维表面产生堆叠,使得表面粗糙不品,直径变细。同时锯齿状构象含量也先增大后减小的趋势,使衍射峰右移,在500~2000 Hz阶段吸声系数从0.55上升到0.7,同时相比于GNs与CNT,GO添加之后吸声效果最好。
In order to develop sound-absorbing materials with excellent acoustic performance at low and medium frequencies to cope with the increasingly serious noise pollution,polyacrylonitrile composite nanofibrous membranes with different concentrations of added nanofillers were prepared by mixing polyacrylonitrile with nano-fillers carbon nanotubes(CNTs),graphene oxide(GOs)and graphene(GNs)through the electrostatic spinning technology and stretch polarisation under the action of high pressure.SEM,XRD,FTIR and absorption coefficient were used to determine the effects of nanofiller type and content on the properties of nanofibres.The results showed that the addition of nanofillers made the fibres thinner,and increased the content of serrations,which shifted the diffraction peaks to the right,and the acoustic absorption coefficient rose from 0.55 to 0.7 at the stage of 500 to 2000,and the effect of adding GO was the best compared to that of GNs,and CNT,but as the concentration of nanofillers increased,the diameter of the fibres tended to be stabilized,the content of serrations did not change much,and the acoustic absorption coefficient instead showed a decreasing trend.
作者
孙泽发
范子红
杨强
赖丹洋
唐潍山
任以伟
SUN Ze-fa;FAN Zi-hong;YANG Qiang;LAI Dan-yang;TANG Wei-shan;REN Yi-wei(Chongqing Jiaotong University,Chongqing 400074;Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714;Chongqing School,University of Chinese Academy of Sciences,Chongqing 400714;Chongqing Technology and Business University,Chongqing 400067,China)
出处
《广州化工》
CAS
2024年第7期38-43,97,共7页
GuangZhou Chemical Industry
基金
“一带一路”国际科学组织联盟(ANSO)联合研究合作专项:低成本智能净水技术在中亚的推广与应用(项目编号ANSO-CR-KP-2020-11)。
关键词
静电纺丝
吸声系数
聚丙烯腈
纳米颗粒
electrostatic spinning
sound absorption coefficient
polyacrylonitrile
nanoparticle
