|Table of Contents|

Research progress in application of strontium aluminate long afterglow luminescent materials in road markings(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2022年3期
Page:
1-13
Research Field:
道路工程(道路交通功能材料专刊)
Publishing date:

Info

Title:
Research progress in application of strontium aluminate long afterglow luminescent materials in road markings
Author(s):
HE Rui1;  LIANG Ying-ping1;  XIE Rui-song2;  LU Xiao-song1;  GENG Jiu-guang1
(1. School of Materials Science and Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Shaanxi Communications Holding Group Co,. Ltd, Xi'an 710065, Shaanxi, China)
Keywords:
road engineering;  road marking;  strontium aluminate;  long afterglow;  luminescent material;  luminescence mechanism;  performance evaluation;  surface modification
PACS:
U491.523
DOI:
10.19721/j.cnki.1671-8879.2022.03.001
Abstract:
In order to promote the application and research of long afterglow luminescent materials in road markings, and improve the visibility of road markings in rainy night, the existing research and application results at home and abroad were combed. And the classification and luminescence mechanism of long afterglow luminescent materials were described. In addition, the preparation methods of long afterglow luminescent materials were summarized. Then, the key performance evaluation methods of strontium aluminate(SrAl2O4:Eu2+, Dy3+)luminescent materials doped with rare earth elements Europium and Dy3+ in road markings were discussed, laying a foundation for further improving its technical standards. In view of the problems of easy hydrolysis and poor organic compatibility of sral2o3: Eu2+, Dy3+ luminescent materials, the effects of surface modification technology and formula optimization on improving their water resistance and organic compatibility were discussed. The results show that it is found that the long afterglow luminescent materials in road markings mainly include sulfide, aluminate and silicate series. Among them, SrAl2O4: Eu2+, Dy3+ has the advantages of long afterglow time and high afterglow intensity, and is the most widely used in road markings. When the mass content of this type of long afterglow luminescent material is 30 to 40% and the particle size in range of 25 to 48 μm the use effect in road marking is the best. It is an effective means of water resistance and organic compatibility, in which the composite modification technology can simultaneously improve the water resistance and organic compatibility of the strontium aluminate luminescent material.6 tabs, 5 figs, 51 refs.

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Last Update: 2022-07-01