High-performance SBS modified asphalt and production process thereof

Abstract

The invention relates to the technical field of modified asphalt, and particularly discloses high-performance SBS modified asphalt and a production process thereof. The high-performance SBS modified asphalt is mainly prepared from the following raw materials: asphalt, SBS, a solubilizer, a stabilizer and an anti-aging agent, the anti-aging agent is prepared from at least one of dibutyl adipate and tetrapropyl ammonium chloride and N, N-bis (2-naphthyl) p-phenylenediamine according to the mass ratio of (3 to 7) to (13 to 22). The production process of the high-performance SBS modified asphalt comprises the following steps: S1, heating asphalt to 160-175 DEG C, then adding SBS, the solubilizer and the stabilizer, and uniformly mixing to obtain an intermediate material; and S2, adding the anti-aging agent into the intermediate material, and stirring for 60-90 minutes, thereby obtaining the product. The high-performance SBS modified asphalt can be used in the industries of buildings, roads, bridges and the like, and has the advantages of aging resistance and high stability.

Description

technical field

[0001] The application relates to the technical field of modified asphalt, more specifically, it relates to a high-performance SBS modified asphalt and its production process. Background technique

[0002] Modified asphalt refers to asphalt added with modifiers, which can comprehensively improve the performance of asphalt in terms of temperature sensitivity, stability, durability, adhesion, and aging resistance. At present, the most widely used modifiers are elastomers or plastomeric polymers, which can resist permanent deformation. Among them, SBS is the most widely used elastomer modifier.

[0003] SBS is styrene-butadiene-styrene block copolymer, which is a block copolymer prepared by anionic polymerization using butadiene and 1,3-butadiene as monomers. It has both plastic and rubber properties. A thermoplastic elastomer with physical and mechanical properties. It has good compatibility with asphalt and meets the corresponding high temperature and low tem...