A kind of modified high-viscosity asphalt and preparation method thereof
A sticky asphalt and modification technology, which is applied in the field of modified high-viscosity asphalt and its preparation, can solve the problems of insufficient storage stability, toughness, visco-toughness, etc., and achieve good viscous toughness, good storage stability, and good corrosion resistance Effect
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Embodiment 1
[0026] The formula of embodiment 1 modified high-viscosity asphalt
[0027] The compound modified high-viscosity asphalt formula of this embodiment is shown in Table 1:
[0028] Table 1: Compound Modified High Viscosity Asphalt Formula
[0029]
[0030] This embodiment takes Thai Petrochemical IRPC70# road petroleum asphalt as the base road petroleum asphalt, adopts star-shaped and linear butadiene-styrene block copolymer (SBS) as modifier; selects two kinds of polymers with different molecular weights to synthesize Resin is used as a viscous and toughness additive. Its molecular structure contains active groups such as hydroxyl groups and ether bonds, and its solid content is 100%. During the reaction process, new —OH and —O— are further generated to make the modified high-viscosity modified Asphalt has high cohesion and adhesion; use domestic granular stabilizer, the role of the stabilizer can reduce the interfacial energy between the base asphalt and SBS, viscosity and ...
Embodiment 2
[0034] Embodiment 2: the preparation method of composite modified high-viscosity road petroleum asphalt
[0035] The specific preparation process of the composite modified high-viscosity road petroleum asphalt in this embodiment is as follows:
[0036] (1) First weigh the SBS modifier, resin viscosity and toughness additive, and granular stabilizer;
[0037] (2) Heat the base asphalt to about 180°C, heat while stirring, so that the asphalt is heated evenly, then pour the high-temperature molten base asphalt into the modified asphalt sample container, put the sample container into the electric heating mantle, and use electric heating Continue heating the jacket to keep the temperature at 180°C;
[0038] (3) Put down the shearing mixing head so that it is 1 / 3 from the bottom of the liquid surface, turn on the shearing machine, and control the speed at 2500-3000r / min, so that the high-temperature asphalt liquid moves in a vortex without splashing. For the pre-weighed SBS modifi...
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