01515093

Component

The research on the effect of fluorine monomer' dosage on the emulsion's performance, with the method of conventional emulsion polymerization and raw material of dodecafluoroheptyl methacrylate (DFHMA), methyl methacrylate, and butyl acrylate, shows fluorinated acrylate emulsion has better stability, lower water-absorption rate, and higher conversion rate and contact angle when the percentage of DFHMA is 5%. Using fluorine monomer as the shell, and butyl monomer as the core, and seed emulsion polymerization to study the effect of core-shell ratio on emulsion and infrared diffuse reflection spectrum to demonstrate the structure of polymer, the research indicates the adoption of shell structure design can effectively improve the hydrophobic performance of latex film, with the best ratio of 7:1, and TiO2 is added to emulsion binder to make fluorinated heat reflective coating. The reflection rate of coating tested by visible/near-infrared spectrophotometer reaches 78.64%. Paint the coating on the surface of asphalt mixture rut specimen, which is illuminated by iodine-tungsten lamp, and the temperature reduction of specimen with latex film can reach 13°C, when the temperature of the specimen without latex film increases to 60°C, which demonstrates that the coating has a good cooling effect.

This paper was sponsored by TRB committee AF000(2) Pavement Materials and the Urban Climate.

01503729

14-2346

English

14p

2014

Transportation Research Board 93rd Annual Meeting

Digital/other

Figures; Photos; References

Acrylic resins; Coatings; Cooling; Emulsions; Hydrophobic properties; Pavement performance; Stability analysis

Highways; Materials; Pavements; I33: Other Materials used in Pavement Layers

Transportation Research Board Annual Meeting 2014 Paper #14-2346

TRIS, TRB, ATRI

Jan 27 2014 2:50PM