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SBS modified asphalt regenerant containing olefin metathesis catalyst and preparation method thereof

A metathesis catalyst and modified asphalt technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of regeneration, achieve low cost of use, improve high and low temperature performance, and improve performance

Active Publication Date: 2021-03-05
CHINA ACAD OF TRANSPORTATION SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no relevant research report on the regeneration of SBS modified asphalt using Grubbs catalyst

Method used

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  • SBS modified asphalt regenerant containing olefin metathesis catalyst and preparation method thereof
  • SBS modified asphalt regenerant containing olefin metathesis catalyst and preparation method thereof
  • SBS modified asphalt regenerant containing olefin metathesis catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: First Generation Grubbs Catalyst

[0026] Weigh 20 parts by mass of topping oil slurry, 70 parts by mass of deasphalted oil, and 10 parts by mass of vacuum residue, stir at 300 rpm for 30 minutes at room temperature, then add 0.1 part by mass of the first-generation Grubbs catalyst weighed, and Stir at 300 rpm for 30 minutes, weigh 0.01 parts by mass of the antioxidant dibutylhydroxytoluene (BHT), and 0.01 parts by mass of the antiaging agent 2-hydroxy-4-methoxybenzophenone, and stir at 200 rpm for 30 minutes at room temperature. Obtain aged SBS modified asphalt regeneration agent.

[0027] Weigh 90 parts by mass of aged SBS modified asphalt heated to 160°C, add 10 parts by mass of the above-mentioned SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 300 rpm for 60 minutes to obtain regenerated SBS modified asphalt. The performance test of the recycled SBS modified asphalt shows that the ductility at 5°C is 8.15cm, the softening po...

Embodiment 2

[0028] Example 2: First Generation Grubbs Catalyst

[0029]Weigh 20 parts by mass of topping oil slurry, 70 parts by mass of deasphalted oil, and 10 parts by mass of vacuum residue, stir at 300 rpm for 30 minutes at room temperature, then add 0.5 parts by mass of the first-generation Grubbs catalyst weighed, and Stir at 300 rpm for 30 min, weigh 0.1 part by mass of the antioxidant dibutylhydroxytoluene (BHT), and 0.1 part by mass of the antiaging agent 2-hydroxy-4-methoxybenzophenone, and stir at 200 rpm for 30 min at room temperature. Obtain aged SBS modified asphalt regeneration agent.

[0030] Weigh 90 parts by mass of aged SBS modified asphalt heated to 160°C, add 10 parts by mass of the above-mentioned SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 300 rpm for 60 minutes to obtain regenerated SBS modified asphalt. The performance test of the recycled SBS modified asphalt shows that the ductility at 5°C is 18cm, the softening point is 75°C, a...

Embodiment 3

[0031] Embodiment 3: second generation Grubbs catalyst

[0032] Weigh 20 parts by mass of topping oil slurry, 70 parts by mass of deasphalted oil, and 10 parts by mass of vacuum residue, stir at 300 rpm for 30 minutes at room temperature, then add 0.1 part by mass of the second-generation Grubbs catalyst that was weighed, and Stir at 300 rpm for 30 minutes, weigh 0.01 parts by mass of the antioxidant dibutylhydroxytoluene (BHT), and 0.01 parts by mass of the antiaging agent 2-hydroxy-4-methoxybenzophenone, and stir at 200 rpm for 30 minutes at room temperature. Obtain aged SBS modified asphalt regeneration agent.

[0033] Weigh 90 parts by mass of aged SBS modified asphalt heated to 160°C, add 10 parts by mass of the above-mentioned SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 300 rpm for 60 minutes to obtain regenerated SBS modified asphalt. The performance test of the recycled SBS modified asphalt shows that the ductility at 5°C is 15cm, the ...

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Abstract

The invention discloses a SBS modified asphalt regeneration agent containing an olefin metathesis catalyst and a preparation method thereof. The regeneration agent comprises topping oil slurry, deasphalted oil, vacuum residue, an olefin metathesis catalyst, an antioxidant, and an antiaging agent. Under the condition that the amount of the reactive regenerant is very small, the regenerant can catalyze the chain-broken SBS to restore the molecular structure, thereby better improving the performance of the aged SBS modified asphalt, avoiding repeated waste of resources, and very economical .

Description

technical field [0001] The invention relates to the regeneration and utilization of waste asphalt in road engineering, in particular to a catalytic reaction type SBS modified asphalt regeneration agent containing an olefin metathesis catalyst and a preparation method thereof. Background technique [0002] SBS modified asphalt has been widely used in the asphalt pavement construction of high-grade highways in my country. SBS modified asphalt pavement has excellent road performance, but after a period of use, it will also age and cause pavement diseases. As a road material, this aged SBS modified asphalt mixture still has extremely high utilization value. The key technology for the recycling of such materials is the recycling of SBS modified asphalt. Studies have shown that the aging mechanism of SBS modified asphalt is the aging of matrix asphalt and the degradation of SBS molecular chains. After the SBS molecular chain is degraded, the network structure formed in the asph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L91/00C08K5/13C08K5/07C08K5/56C08K5/49
CPCC08L95/00C08L2205/025C08L2205/035C08L53/02C08L91/00C08K5/13C08K5/07C08K5/49C08K5/56
Inventor 惠嘉朱宝林程寅江睿南王曈谷云辉何远义刚红润边莉付立
Owner CHINA ACAD OF TRANSPORTATION SCI