为探究SrAl2O4∶Eu2+,Dy3+稀土发光材料循环再生利用的可行性,以废弃夜光聚酯(PET)长丝作为原材料,采用乙二醇醇解法降解夜光PET长丝。回收夜光纤维中的发光材料SrAl2O4∶Eu2+,Dy3+。并通过改变催化剂(乙酸锌)的用量,探究催化剂含量对回收夜光纤维中发光材料性能的影响。利用扫描电镜、X射线衍射仪、荧光余辉亮度测试仪和荧光光谱仪对夜光纤维中回收得到的发光材料的表面形貌和发光性能进行分析与表征。结果表明:发光材料的X射线衍射峰与PDF卡片基本一致,纺丝和降解过程不影响发光材料的光色特性和余晖衰减规律;当催化剂添加质量为0.5%时,回收得到的夜光粉纯度为91.67%,初始余晖亮度达到4.0891cd/m2。
In order to explore the feasibility of recycling SrAl2O4∶Eu2+,Dy3+ rare earth light-emitting materials,using waste luminous polyester fibers as raw materials,glycol alcohol hydrolysis was used to degrade the luminous polyester fibers.By changing the amount of zinc acetate catalyst,the effect of the amount of catalyst on the alcoholysis reaction and the properties of luminous powder was analyzed.And then scanning electron microscopy,X-ray diffractometer,fluorescence afterglow brightness tester and radiation spectrum analyzer were used to analyze and characterized the surface morphology and luminous properties of luminous powder.The results shown that the spinning and degradation process had little impact on the fluorescence performance and afterglow decay laws.When the catalyst addition amount was 0.5wt%,the recycled luminous powder had the best purity of 91.67%,and the initial afterglow brightness reached 4.0891cd/m2.
[1] 田银彩,王延伟,迟长龙,刘桂宙,马凯.PP/稀土铝酸锶复合材料流变性能研究[J].塑料工业,2016(1):90-93.
[2] 赵欢,潘力.稀土铝酸盐发光材料在纺织领域的应用研[J].山东纺织科技,2019,60(4):45.
[3] Kshatri D S,Khare A.Optical properties of rare earth doped strontium aluminate(SAO)phosphors:a review[J].Optics and Spectroscopy,2014,117(5):769-783.
[4] 张薇薇,袁志磊,蔡佳仕,等.蓄光纺织品的研究现状与应用[J].印染助剂,2019,36(6):6-8.
[5] 郭斗斗,梁勇,温葆林,等.从废稀土荧光粉回收稀土[J].中国有色冶金,2014(5):79-82.
[6] 廖春发,曾颜亮,焦芸芬.从废旧稀土荧光粉中回收稀土的研究现状[J].稀有金属与硬质合金,2013,41(6):7-12.
[7] Ricardo J B Pinto,Luis D Carlos,Paula A A P Marques,et al.An overview of luminescent bio-based composites[J].Journal of Applied Polymer Science,2014,131(22):547-557.
[8] 罗伟,孙艳云,李书润.废旧纺织品再利用技术方法研[J].化工管理,2017(10):14-18.
[9] 宋婧.废弃PET的再生资源化产物结构与性能研究[D].西安:西安理工大学,2018.
[10] 李新芳,涂志刚,赵素芬.废弃PET瓶的回收现状及研究进展[J].塑料包装,2018,28(6):10-13.
[11] 陈世明,余天石,葛明桥.废弃聚酯醇解液中乙二醇回收工艺的研究[J].化工新型材料,2015,43(2):40-42.
[12] 索倩倩.PET醇解反应工艺研究[D].上海:华东理工大学,2017.
[13] 王少博.PET聚酯的乙二醇解聚与再生共聚研究[D].上海:东华大学,2016.
[14] 杨华光,梁桂英,王春晓,等.金属锌功能化离子液体催化PET聚酯醇解反应[J].材料科学与工程学报,2012(5):747-751.
[15] 王爽.废旧聚酯纺织品的乙二醇醇解技术研究[D].上海:东华大学,2017.
[16] 王少博.PET聚酯的乙二醇解聚与再生共聚研究[D].上海:东华大学,2016.
[17] 沈冬冬.SrAl2O4∶(Eu2+,Dy3+)长余辉材料的制备及其性能研究[D].杭州:杭州电子科技大学,2015.
[18] 葛明桥,赵菊梅,郭雪峰.稀土铝酸锶夜光纤维的光色特性[J].纺织学报,2009,30(5):1-5.
[19] 徐超,卢佃清,刘学东.稀土掺杂铝酸锶长余辉材料陷阱类型及发光机理[J].稀土,2015,36(1):74-79.
[20] 龚静华,马敬红,梁伯润.PET蓄光纤维的研制及性能研究[J].合成技术及应用,2007(4):22-24.
[21] Zhang H,Xue Z,LeiB,et al.A top-down method to fabricate SrAl2O4∶Eu2+,Dy3+,nanosheetsfromcommercial blocky phosphors[J].Optical Materials,2014,36(11):1802-1807.