A kind of anti-aging high-viscosity modified asphalt additive and preparation method thereof
A technology of modified asphalt and additives, used in building components, building insulation materials, buildings, etc., can solve the problems of poor asphalt compatibility, poor polymer compatibility, insufficient anti-aging performance, etc. Effects of aging performance, increased viscosity, improved rutting resistance and low temperature performance
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Embodiment 1
[0038] (1) 10 parts by weight of MCM-41 mesoporous molecular sieve (with a specific surface area of 1000 m 2 / g), 0.4 parts by weight of disodium tetrasulfide were added to 100 parts by weight of toluene. Heating to 50°C, adding 0.5 parts by weight of γ-chloropropyltrimethoxysilane dropwise, raising the temperature to 70°C for 2 hours, cooling, filtering, washing with ethanol, and drying at 100°C for 2 hours to obtain a surface-modified mesoporous molecular sieve.
[0039] (2) 100 parts by weight of SBS (molecular weight: 100,000), 40 parts by weight of C5 petroleum resin (softening point: 95°C), 20 parts by weight of aromatic oil (content of aromatic hydrocarbon: 40wt%), 4 parts by weight of surface modification agent Molecular sieves and 2 parts by weight of 2,6-di-tert-butyl-p-cresol are uniformly mixed, blended and extruded by a twin-screw extruder, and granulated to obtain an anti-aging high-viscosity modified asphalt additive. The operating conditions of the extruder ...
Embodiment 2
[0041] (1) 10 parts by weight of MCM-48 mesoporous molecular sieve (with a specific surface area of 800 m 2 / g), 0.6 parts by weight of disodium tetrasulfide were added to 150 parts by weight of xylene. Heating to 55°C, adding 0.8 parts by weight of γ-chloropropyltriethoxysilane dropwise, raising the temperature to 75°C for 2 hours, cooling, filtering, washing with ethanol, and drying at 100°C for 3 hours to obtain a surface-modified mesoporous molecular sieve.
[0042](2) 100 parts by weight of SBS (molecular weight: 150,000), 30 parts by weight of C5 petroleum resin (softening point: 100°C), 30 parts by weight of aromatic oil (60 wt% aromatic content), 5 parts by weight of surface modification agent Molecular sieves, 3 parts by weight of 4,4'-thiobis(6-tert-butyl-3-methylphenol) are evenly mixed, then blended and extruded by a twin-screw extruder, and granulated to obtain anti-aging high-viscosity Modified bitumen additive. The operating conditions of the extruder are: 1...
Embodiment 3
[0044] (1) 10 parts by weight of SBA-15 mesoporous molecular sieve (with a specific surface area of 1100 m 2 / g), 0.7 parts by weight of disodium tetrasulfide were added to 150 parts by weight of toluene. Heating to 60°C, adding 1.0 parts by weight of chloromethyltriethoxysilane dropwise, raising the temperature to 75°C for 3 hours, cooling, filtering, washing with ethanol, and drying at 100°C for 5 hours to obtain a surface-modified mesoporous molecular sieve.
[0045] (2) 100 parts by weight of SBS (molecular weight is 200,000), 20 parts by weight of C5 petroleum resin (softening point is 110°C), 40 parts by weight of aromatic oil (content of aromatic hydrocarbon is 80wt%), 6 parts by weight of surface modification agent Molecular sieves and 4 parts by weight of β-(3,5-di-tert-butyl-4-hydroxyphenyl) isooctyl propionate are mixed evenly, then blended and extruded by a twin-screw extruder, and granulated to obtain anti- Aged high viscosity modified bitumen additive. The op...
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