Preparation methods of modifier mother liquor and road asphalt

Abstract

The invention discloses preparation methods of a modifier mother liquor and a road asphalt. The modifier mother liquor preparation method comprises: adding anthracene oil to a reaction kettle, addinghydrogen peroxide, heating, controlling the reaction temperature at 90-150 DEG C, stirring to obtain modified anthracene oil, continuously adding a macromolecule polymer to the reaction kettle, controlling the temperature of the reaction kettle at 120-180 DEG C, and stirring to obtain the modifier mother liquor. According to the present invention, the road asphalt is prepared by matching the modifier mother liquor, coal tar pitch and petroleum pitch, such that the high temperature and low temperature performances and the heat storage stability of the asphalt can be easily improved.

Description

technical field

[0001] The invention belongs to the technical field of chemical industry, and mainly relates to a method for preparing modifier mother liquid and road asphalt, in particular to a method for preparing road asphalt produced from coal tar pitch and petroleum pitch as raw materials. Background technique

[0002] With the continuous expansion of road construction scale, the market demand for road asphalt is also growing at a high speed. At present, oil resources are increasingly scarce, and the processing value of coal tar pitch (coal tar pitch) is low, and the market price is only about half of that of petroleum pitch. For this reason, researchers are constantly exploring whether coal tar pitch can be used as a raw material for the production of road pitch . Coal tar pitch produced by traditional methods has disadvantages such as poor heat sensitivity, easy aging, and poor ductility, which cannot meet the needs of road construction. Aiming at the shortcomings o...

Examples

Embodiment 1

[0033] Add 82 parts of anthracene oil with a distillation range of 320~420°C into the reaction kettle, add 1.5 parts of hydrogen peroxide (mass concentration: 90%), heat to about 120°C, and stir for about 2 hours to obtain modified anthracene oil A1 .

[0034] Add 15 parts of SBS (molecular mass: 150,000) to A1, heat to 140°C, and stir for 5 hours to obtain modifier mother liquid A2.

Embodiment 2

[0036] Add 90 parts of anthracene oil with a distillation range of 320~420°C into the reaction kettle, add 2.5 parts of hydrogen peroxide (mass concentration: 90%), heat to about 120°C, and stir for about 2 hours to obtain modified anthracene oil A3 .

[0037] Add 12 parts of SBR (molecular mass: 180,000) to A3, heat to 140°C, and stir for 5 hours to obtain modifier mother liquid A4.

Embodiment 3

[0039] Heat 60 parts of petroleum pitch M1 with a softening point of 45°C (asphaltene content of 8wt%) and 20 parts of coal tar pitch N1 with a softening point of 86°C (asphaltene content of 26wt%) to about 140°C, and add 14 parts of Modifier mother liquor A2, the stirrer speed is 2500 rpm, and stirred for 2 hours. After the stirring process is completed, the material can be discharged, cooled to room temperature, and the target product is obtained.

technical field

[0001] The invention belongs to the technical field of chemical industry, and mainly relates to a method for preparing modifier mother liquid and road asphalt, in particular to a method for preparing road asphalt produced from coal tar pitch and petroleum pitch as raw materials. Background technique

[0002] With the continuous expansion of road construction scale, the market demand for road asphalt is also growing at a high speed. At present, oil resources are increasingly scarce, and the processing value of coal tar pitch (coal tar pitch) is low, and the market price is only about half of that of petroleum pitch. For this reason, researchers are constantly exploring whether coal tar pitch can be used as a raw material for the production of road pitch . Coal tar pitch produced by traditional methods has disadvantages such as poor heat sensitivity, easy aging, and poor ductility, which cannot meet the needs of road construction. Aiming at the shortcomings o...

Examples

Embodiment 1

[0033] Add 82 parts of anthracene oil with a distillation range of 320~420°C into the reaction kettle, add 1.5 parts of hydrogen peroxide (mass concentration: 90%), heat to about 120°C, and stir for about 2 hours to obtain modified anthracene oil A1 .

[0034] Add 15 parts of SBS (molecular mass: 150,000) to A1, heat to 140°C, and stir for 5 hours to obtain modifier mother liquid A2.

Embodiment 2

[0036] Add 90 parts of anthracene oil with a distillation range of 320~420°C into the reaction kettle, add 2.5 parts of hydrogen peroxide (mass concentration: 90%), heat to about 120°C, and stir for about 2 hours to obtain modified anthracene oil A3 .

[0037] Add 12 parts of SBR (molecular mass: 180,000) to A3, heat to 140°C, and stir for 5 hours to obtain modifier mother liquid A4.

Embodiment 3

[0039] Heat 60 parts of petroleum pitch M1 with a softening point of 45°C (asphaltene content of 8wt%) and 20 parts of coal tar pitch N1 with a softening point of 86°C (asphaltene content of 26wt%) to about 140°C, and add 14 parts of Modifier mother liquor A2, the stirrer speed is 2500 rpm, and stirred for 2 hours. After the stirring process is completed, the material can be discharged, cooled to room temperature, and the target product is obtained.