SBS modified asphalt auxiliary agent and SBS modified asphalt
A technology of modified asphalt and additives, which is applied in the field of SBS modified asphalt additives and SBS modified asphalt. Viscosity, the effect of improving anti-aging performance
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[0021] The present invention also provides a preparation method of SBS modified asphalt additives. The preparation method includes: heating 50-100 parts of white oil at a temperature of 50°C to 70°C, so that the viscosity of the white oil becomes thinner, which is more beneficial to other raw materials Mixing of ingredients; adding 30-50 parts of modified sulfur, 0.5-2 parts of antioxidant, 1-5 parts of suspension aid, and 1-5 parts of plasticizer, stirring and mixing uniformly to obtain SBS modified asphalt additive. Among them, the order of addition of the raw material components of 30-50 parts of modified sulfur, 0.5-2 parts of antioxidant, 1-5 parts of suspension aid and 1-5 parts of plasticizer is not particularly limited.
[0022] In a preferred embodiment, the modified sulfur includes the following raw material components in parts by mass: 5-10 parts aluminum hydroxide, 5-10 parts magnesium hydroxide, 50-200 parts water, 50-100 parts sulfur, 5-10 parts Polymer wax emulsion...
Example Embodiment
[0030] Example 1
[0031] Mix 5 parts of 2000 mesh aluminum hydroxide, 5 parts of 2000 mesh magnesium hydroxide and 100 parts of water to prepare an inorganic powder suspension; add 0.3 part of silane coupling agent, grind to 15 μm, and disperse uniformly to obtain an inorganic powder suspension; Add 5 parts of oxidized polyethylene wax emulsion to the inorganic powder suspension and stir for 30 minutes; then add 50 parts of 200 mesh industrial sulfur and stir for 60 minutes to obtain an inorganic powder / polymer wax / sulfur mixture. The above mixture is dried and dehydrated at 80°C, crushed and sieved (200 mesh) to obtain modified sulfur.
[0032] Heat 50 parts of 100# industrial white oil to 50°C, add 0.5 parts of antioxidant 1010, 2 parts of mineral oil emulsifier, 2 parts of dioctyl phthalate, 30 parts of modified sulfur prepared above, and stir for 30 minutes , Stir evenly to obtain the SBS modified asphalt additive of this embodiment.
Example Embodiment
[0033] Example 2
[0034] Mix 8 parts of 3000 mesh aluminum hydroxide, 8 parts of 4000 mesh magnesium hydroxide and 200 parts of water to form an inorganic powder suspension; add 1 part of titanate coupling agent, grind to 13μm, and disperse uniformly to obtain an inorganic powder suspension Add 10 parts of oxidized polyethylene wax emulsion to the inorganic powder suspension and stir for 60 minutes; then add 100 parts of 300 mesh industrial sulfur and stir for 120 minutes to obtain an inorganic powder / polymer wax / sulfur mixture. The above mixture is dried and dehydrated at 80°C, crushed and sieved (200 mesh) to obtain modified sulfur.
[0035] Heat 100 parts of 100# industrial white oil to 60°C, add 2 parts of antioxidant 1076, 5 parts of mineral oil emulsifier, 5 parts of dioctyl maleate, and 50 parts of modified sulfur prepared above, stir for 60 minutes, Stir uniformly to obtain the SBS modified asphalt additive of this embodiment.
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