Anti-aging SEBS modified asphalt and preparation method thereof

[0028] Take 10 kg of Esso No. 70 asphalt with a penetration of 70, heat it to 180 ° C, and add styrene-ethylene / butylene-styrene block copolymer (Sinopec SEBS, model YH-601) (the number average molecular weight is 160,000) 0.8 kg, start the high-speed shearing machine, stir at a high speed at 400r / min for 1.5h, then add 0.3 kg of triphenyl phosphite, 0.4 kg of terpene resin, mix evenly, pass through the colloid mill, and then stir for 60 min , and finally added 0.015 kg of sulfur and stirred for 2 hours to prepare modified asphalt. The performance test results are shown in Table 1.

[0030] Take 10 kg of Esso No. 70 asphalt with a penetration of 70, heat it to 180 ° C, and add styrene-ethylene / butylene-styrene block copolymer (Sinopec SEBS, model YH-601) (the number average molecular weight is 160,000) 0.8 kg, start the high-speed shearing machine, stir at a high speed of 400r / min for 1.5h, then add 0.3 kg of triphenyl phosphite and mix evenly, pass through the colloid mill, then stir for 60 min, finally add 0.015 kg of sulfur and stir After 2 hours, the modified asphalt was prepared, and the performance test results are shown in Table 1.

[0032] Take 10 kg of Esso No. 70 asphalt with a penetration of 70, heat it to 180 ° C, and add styrene-ethylene / butylene-styrene block copolymer (Sinopec SEBS, model YH-601) (the number average molecular weight is 160,000) 0.8 kg, start the high-speed shearing machine, stir at a high speed for 1.5 h at a rotating speed of 400 r / min, then add 0.4 kg of terpene resin and mix evenly, pass through a colloid mill, then stir for 60 min, finally add 0.015 kg of sulfur and stir for 2 h, The modified asphalt was prepared, and the performance test results are shown in Table 1.