A kind of modifier mother liquid and road asphalt and preparation method thereof

A technology of road asphalt and modifier, which is applied in building components, building insulation materials, buildings, etc., and can solve problems such as poor flexibility of asphalt, high power consumption, and poor thermal storage stability

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the proportion of coal tar pitch is relatively high (50-30 parts of coal tar pitch), and the proportion of petroleum pitch is relatively small (10-20 parts of petroleum pitch). , leading to too high content of asphaltene in the asphalt colloidal structure, unreasonable asphalt colloid composition matching, which will lead to poor flexibility of asphalt, poor low temperature performance and thermal storage stability
In addition, adding 5-35 parts of waste rubber powder to asphalt will lead to too high mixing temperature of asphalt and poor thermal storage stability
The preparation process is to pre-mix petroleum pitch, coal tar pitch and co-solvent with SBS, and then grind through a colloid mill. Large size, high power consumption
[0006] Neither of the above two techniques has elaborated on the detoxification performance of bitumen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 90 parts of anthracene oil with a distillation range of 320~360°C into the reaction kettle, add 10 parts of terephthalamide and 4 parts of aluminum chloride, heat up, control the reaction temperature to 170°C, and stir for 2 hours , the stirring speed was 500 rev / min, and the modified anthracene oil A1 was obtained.

[0045] Add 84 parts of modified anthracene oil into the reaction kettle, add 0.9 parts of polyphosphoric acid (the concentration of polyphosphoric acid is 110wt%, the same below), heat to about 110°C, and stir for 2 hours. Continue to raise the temperature to about 160°C, then add 1.8 parts of polyphosphoric acid, and stir for 1 hour to obtain a modified mother liquor intermediate.

[0046] Add 12 parts of SBS (star structure, molecular weight 150,000, the same below) to modified anthracene oil A1, heat to 150°C, and stir for 5 hours to obtain modifier mother liquid A2.

Embodiment 2

[0048] Add 94 parts of anthracene oil with a distillation range of 320~360°C into the reaction kettle, add 13 parts of nitrobenzyl alcohol and 3 parts of phosphotungstic acid, heat up, control the reaction temperature to 190°C, and stir for 2 hours , the stirring speed was 500 rev / min, and the modified anthracene oil A3 was obtained.

[0049]Add 81 parts of modified anthracene oil into the reaction kettle, add 0.4 parts of polyphosphoric acid, heat to about 100°C, and stir for 2 hours. Continue to raise the temperature to about 150°C, then add 1.1 parts of polyphosphoric acid, and stir for 1 hour to obtain a modified mother liquor intermediate.

[0050] Add 14 parts of SBS to modified anthracene oil A3, heat to 155°C, and stir for 6 hours to obtain modifier mother liquor A4.

Embodiment 3

[0052] Add 86 parts of anthracene oil with a distillation range of 320~360°C into the reaction kettle, add 7 parts of hydroxybenzyl alcohol and 4 parts of p-toluenesulfonic acid, heat up, control the reaction temperature to 150°C, and stir for 2 hours , the stirring speed was 500 rev / min, and the modified anthracene oil A5 was obtained.

[0053] Add 84 parts of modified anthracene oil into the reaction kettle, add 0.9 parts of polyphosphoric acid, heat to about 110°C, and stir for 2 hours. Continue to raise the temperature to about 160°C, then add 2.1 parts of polyphosphoric acid, and stir for 1 hour to obtain a modified mother liquor intermediate.

[0054] Add 10 parts of SBS to modified anthracene oil A5, heat to 150°C, and stir for 6 hours to obtain modifier mother liquor A6.

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Abstract

The invention discloses a modifier mother liquor and road asphalt and a preparation method thereof. The modifying agent mother liquor is used in parts by weight as follows: 78-94 parts of modified anthracene oil, 0.4-3.5 parts of polyphosphoric acid, and 4-20 parts of SBS. The modified anthracene oil of the present invention utilizes benzyl alcohol compounds and anthracene oil to undergo electrophilic substitution reaction and graft polymerization, etc., and utilizes polyphosphoric acid to further condense and modify the modified anthracene oil, so that the modified anthracene oil To achieve a suitable degree of condensation, while increasing the aromaticity of the modified anthracene oil and the content of suitable colloids. The road asphalt is prepared by matching the modifier mother liquor with petroleum asphalt and coal asphalt, so that the colloidal structure of the road asphalt product is more reasonable, the high and low temperature performance of the asphalt is enhanced, and the toxicity of the asphalt can also be reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and mainly relates to a modifier mother liquid, road asphalt and a preparation method thereof, in particular to a preparation method of 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 shor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/00C08L53/02C08K3/32C08L95/00
CPCC08K2003/329C08L91/00C08L95/00C08L2201/08C08L2205/025C08L2205/035C08L53/02C08K3/32
Inventor 徐青柏陈杰宣根海宁爱民李志军程国香申峻侯荣国
Owner CHINA PETROLEUM & CHEM CORP
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