将苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)用于改性环氧沥青(EA),研究了SBS对EA的固化粘度、相容性和力学性能的影响。结果表明:SBS的加入提高了EA固化过程中的粘度,显著改善了沥青和环氧树脂的相容性,抑制了EA固化过程中的分层离析。同时SBS提高了EA的断裂伸长率、储能模量和软化温度,而降低了EA的玻璃化转变温度和拉伸强度,改善了EA的高温稳定性和低温韧性。 Styrene-butadiene-styrene block copolymer (SBS) was used to modify epoxy asphalt (EA). The effect of SBS on the curing viscosity, compatibility and mechanical properties of EA was studied. The results show that the addition of SBS improves the viscosity of EA during curing, significantly improves the compatibility between asphalt and epoxy resin, and restrains the delamination during EA curing. At the same time, SBS improves the elongation at break, storage modulus and softening temperature of EA, and reduces the glass transition temperature and tensile strength of EA, and improves the high temperature stability and low temperature toughness of EA.