Preparation and physicochemical properties of asphalt pavement beautification coating
To reduce the color difference between the asphalt pavement and the original pavement after pothole repair,and to improve the overall coordination of the pavement and driving safety,a new type of asphalt pavement landscaping coating was prepared by choosing the copolymer of epoxy resin and a-crylic resin as the base material,and adding modifier,pigment and filler,auxiliary agent and curing a-gent in turn.The physical and chemical properties and beautification effect were analyzed by infrared spectroscopy test,non-isothermal differential scanning calorimetry,combined with weathering test,vis-cosity temperature test,thermogravimetric test and experimental road test.The results show that:the ab-sorption peaks of methyl and methylene on the curve of the original oxy silane(KH-570),the absorp-tion peaks of carbon-oxygen and carbon-carbon double bonds on the carbonyl group appear in the infra-red spectral curves of the modified nano-silica.The modification of the nano-silica by the oxy silane is successful,the acrylic resin is successfully grafted with the epoxy resin,and the curing agent completely consums the epoxy groups in the epoxy resin;the composite resin coatings in the The thermal behavior of composite resin coatings under different heating rates shows that the conversion rate of the composite resin system is proportional to the temperature and heating rate;The adhesion,storage stability,chemi-cal resistance and thermodynamic properties of the coating are good,and the viscosity meets the specifi-cations;The coating can effectively reduce the color difference of the pavement,and the beautification effect is good.This beautification coating has excellent physical and chemical properties,and can pro-tect the asphalt surface layer well while repairing the color difference of the road surface to ensure the safety of drivers.
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