Preparation of a novel flow improver and its viscosity-reducing effect on bitumen

Preparation of a novel flow improver and its viscosity-reducing effect on bitumen

Flow improver

Viscosity

Bitumen

Maleic anhydride

Octadecyl acrylate

Styrene

A novel flow improver, the copolymer of octadecyl acrylate, styrene, and maleic anhydride (OASA), was prepared by copolymerization and esterification reaction to study its viscosity-reducing effect on bitumen based its existing application on crude oil. In this paper, chemical compositions, thermal stability, and viscosity were characterized by infrared spectra (IR), differential scanning calorimetry (DSC), and Brookfield Viscometer, respectively. Besides, conventional properties of modified bitumen were investigated to study the effect of modifier. Results shown that OASA modification was physical and its mechanism was the combination effect of polar moiety and long alkyl chain of OASA copolymer

thermal stability of modifier was good enough to capable for asphalt mixing and compaction

viscosity-reducing effect of OASA was proved with a considerable range and the effect was negative to temperature increasing

as for bitumen conventional properties, penetration and ductility got increased while the softening point got decreased under the OASA modifying effect.

181

Fuel

2016-10-01

Li, Rui

Wang, Chengchao

Wang, Pengzhi

Pei, Jianzhong

Journal Article

AHXLWWT6

0016-2361

10.1016/j.fuel.2016.05.028