INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Preparation and Pavement Performance of Long Afterglow Waterborne Marking Paint |
ZHAO Xiaokang1, ZHANG Jiupeng1, HU Qinshi1, PEI Jianzhong1,*, CHENG Ke2, ZHANG Liu1
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1 School of Highway, Chang'an University, Xi'an 710064, China 2 Xi'an Xianyang International Airport Co., Ltd., Xianyang 712000, Shaanxi, China |
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Abstract In this work, the SrAl2O4:Eu2+, Dy3+ luminescent powder was used as the coating matrix, the shell was treated with the double silicon coa-ting modification technology, and the long afterglow waterborne marking paint was prepared. Then the paint film test and road performance test were carried out, and the performance of the marking paint was evaluated comprehensively. The results show that a waterborne luminescent paint with excellent film performance and luminous effect can be prepared by using silica-propyl emulsion as the base material, sodium hexametaphosphate as a dispersant, and sodium methylcellulose as an anti-sedimentation agent with a water-base ratio of 33%. The marking coating obtained a surface drying time of 1.4 h and a hardness of 2H. The water resistance and acid resistance both of coatings were normal after soaking for 24 hours, the paint discolored slightly after soaking in 40% sodium hydroxide solution. Its high and low-temperature resistance was excellent. The adhesion could reach 2-level. The marking film thickness is preferably 0.33 mm. The results of road performance showed that the British Pendulum Number of the pavement coated with waterborne luminescent paint was 88 BPN. The interfacial adhesion of coating-pavement could reach 2.72 MPa. The non-stick tire drying time was 10 min, and the afterglow time was 12.5 h. Soaking in water at 15 ℃ for 24 h, the appea-rance of the marking film was normal, which can meet the performance requirements of pavement marking. However, the long-term high tempe-rature of 80 ℃ or the weak alkali environment at normal temperature will cause certain damage to the luminescence performance of coatings. Ho-wever, long-term high temperature of 80 ℃ or a weak alkali environment will cause certain damage to the luminescent properties of coatings. The research provides technical references for the development of long afterglow pavement marking paint.
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Published: 10 August 2024
Online: 2024-08-29
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Fund:National Natural Science Foundation of China (52178408) and Xi'an Xianyang International Airport Innovation Project (CWAG-XY-2022-FW-0299). |
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