In order to explore the feasibility of recycling and reusing of SrAl2O4∶Eu2+, Dy3+ and degradation products in polyester luminescent fiber, the waste polyester luminescent fiber was used as raw material, xylene solvent was added into the traditional ethylene glycol (EG) degradation system, PET degradation products and SrAl2O4∶Eu2+, Dy3+ were recovered by dissolution-degradation method, and the degradation effect was optimized by changing the dosage of EG and reaction time.The surface morphology and luminescence properties of SrAl2O4∶Eu2+, Dy3+ were characterized by scanning electron microscopy (SEM), X-ray diffractometer (XRD) and fluorescence afterglow luminance analyzer.The performance and molecular content of the degradation products were characterized by nuclear magnetic resonance spectrum, gel permeation chromatograph and differential scanning calorimeter.The results showed that the degradation process had no effect on the crystal lattice of SrAl2O4∶Eu2+, Dy3+, with a recovery rate of 97% and a luminescent brightness of 6.264cd/m2, and different PET degradation products could be obtained by changing the dosage of EG.
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基金资助
国家自然科学基金青年基金(51903107);江苏省自然科学基金青年基金(BK20190619);中国博士后面上资助项目(2019M661724);江苏省博士后基金科研资助项目(2019K107);中国化学纤维工业协会-绿宇基金(CCFA-LVYU-2019-03)
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