SrAl2O4∶Eu2+,Dy3+ long afterglow luminescent powders were modified by KH-560 silane coupling agent.The addition amount of coupling agent was determined by measuring the oil absorption value of the modified samples,and the changes before and after modification were characterized by fourier transmission infrared spectrometer,scanning electron microscope,contact angle measuring instrument and a long-afterglow luminescent tester.The results showed that when the addition of silane coupling agent was 3%,the oil absorption value of the powders decreased to 33.25%,and some coupling agents were grafted on the surface of the powders in the way of Al-O-Si.After modification,the hydrophobicity of the powders was improved,and luminescence brightness was slightly reduced.
Zhang Yongwei, Zhu Yanan, Ge Mingqiao
. Surface modification and characterization of SrAl2O4∶Eu2+,Dy3+ long afterglow luminescence powder[J]. New Chemical Materials, 2020
, 48(12)
: 93
-96
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.12.023
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