荧光-麦秸纤维/PP复合材料的制备及其性能  

Preparation and properties of fluorescent-wheat straw fiber/PPcomposite

作　　者：高晗 汤赛 迟祥 宋晓雪 韩广萍[1] 程万里[1] GAO Han;TANG Sai;CHI Xiang;SONG Xiaoxue;HAN Guangping;CHENG Wanli(Key Laboratory of Biomass Material Science and Technology of Ministry of Education,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室,哈尔滨150040

出　　处：《功能材料》2021年第8期8192-8198,共7页Journal of Functional Materials

基　　金：中央高校基本科研业务费专项资金项目(2572020AW38)。

摘　　要：以麦秸纤维为基础原料,SrAl_(2)O_(4):Eu^(2+),Dy^(3+)荧光粉为添加剂,采用热压工艺制备出荧光秸塑复合材料,研究了SrAl_(2)O_(4):Eu^(2+),Dy^(3+)荧光粉含量对秸塑复合材料性能的影响。利用扫描电子显微镜(SEM)、电子万能力学实验机、荧光光谱仪、同步热分析红外气质仪等表征材料的微观形貌、力学性能、发射光谱及热稳定性,并利用YH-18W台灯测试材料的余辉性能。结果表明,随着SrAl_(2)O4:Eu^(2+),Dy^(3+)荧光粉添加量的增多,复合材料的力学性能和抗湿胀性能先增后减,均在添加量为15%时性能最优;复合材料的热稳定性和发光强度随着SrAl_(2)O_(4):Eu^(2+),Dy^(3+)荧光粉添加量的增多而增强,荧光粉添加量为20%时,复合材料的发光强度最大,达到435 a.u.。日光灯照射10 min后,随着SrAl_(2)O_(4):Eu^(2+),Dy^(3+)荧光粉添加量的增多,复合材料的余辉初始亮度增强,余辉衰减时间延长。且30 min后添加量20%复合材料的余辉亮度较其他材料更强;但与添加量15%复合材料的发光强度和余辉亮度相差不大,发光强度差值仅为53 a.u.。综合而言,SrAl_(2)O_(4):Eu^(2+),Dy^(3+)荧光粉含量15%的复合材料综合性能最优。In this paper,with wheat straw fiber and SrAl_(2)O_(4):Eu^(2+),Dy^(3+)phosphors as the basic raw material and additives respectively,fluorescent straw-plastic composite materials are prepared by hot pressing process.The effect of SrAl_(2)O_(4):Eu^(2+),Dy^(3+)phosphor content on the properties of straw-plastic composites is studied.Scanning electron microscope(SEM),electronic universal science experiment machine,fluorescence spectrometer and synchronous thermal analysis infrared temperament instrument are used to characterize the microscopic morphology,mechanical properties,emission spectrum and thermal stability of the material,and YH-18W desk lamp is used to test afterglow performance of the material.The results show that with the increase of the addition of SrAl_(2)O_(4):Eu^(2+),Dy^(3+)phosphors,the mechanical properties and anti-swelling properties of the composite material increase first and then decrease,and the performance is optimal when the addition amount is 15%.The thermal stability of the composite material and the luminous intensity increases with the addition of SrAl_(2)O_(4):Eu^(2+),Dy^(3+)phosphors.When the phosphor addition is 20%,the luminous intensity of the composite material is the highest,reaching 435 au.After 10 minutes of fluorescent lamp irradiation,with the increase of SrAl_(2)O_(4):Eu^(2+),Dy^(3+)phosphor addition,the initial brightness of the composite material's afterglow is enhanced,and the afterglow decay time is prolonged.After 30 minutes,the afterglow brightness of the 20%composite material added is stronger than other materials,but the luminous intensity and afterglow brightness of the composite material added 15%are not much different,and the luminous intensity difference is only 53 a.u.In summary,the composite material with 15%phosphor content of SrAl_(2)O_(4):Eu^(2+),Dy^(3+)has the best overall performance.

关 键 词：聚丙烯(PP) 麦秸纤维(WSF) SrAl_(2)O_(4):Eu^(2+) Dy^(3+)荧光粉 发射光谱 余辉性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]