Asphalt anti-aging modifier

An anti-aging and modifier technology, applied in building components, building insulation materials, construction, etc., can solve the problems of rising production costs and unfavorable large-scale promotion, and achieve cost saving, low cost, and improved compaction performance Effect

Active Publication Date: 2021-01-01
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nano-CeO was used in this invention 2 , leading to a significant increase in the production cost of the invention, which is not conducive to large-scale promotion

Method used

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  • Asphalt anti-aging modifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The asphalt anti-aging modifier in this embodiment is composed of the following raw materials by weight: 2.5 parts of furfural extraction oil (aromatic content of 70%), 3 parts of polyethylene, 1.2 parts of sodium butylnaphthalene sulfonate, 0.8 parts of polyurethane, propylene 0.2 part of alcohol, 3 parts of high aluminum powder, 0.5 part of octadecyl primary amine salt.

[0030] The method of use is as follows:

[0031] Put 500g 70# bitumen in a 1-liter reaction vessel, heat the bitumen to 150°C, then add 5% furfural extract oil (aromatic content 70%), which accounts for the weight of the bitumen, into the bitumen, and use a high-speed shear emulsifier to continuously Shearing is accelerated and the remaining components are added in the proportions above. The high-speed shearing emulsifier was kept at 3000 r / min and continued to stir for 30 minutes to obtain the modified asphalt product.

Embodiment 2

[0033] The asphalt anti-aging modifier in this example is composed of the following raw materials by weight: 2.0 parts of furfural extraction oil (aromatic content of 90%), 1 part of polyethylene, 1.5 parts of sodium butylnaphthalene sulfonate, 1.6 parts of polyurethane, propylene 0.6 part of alcohol, 2 parts of high aluminum powder, 1.2 part of octadecyl primary amine salt.

[0034] The method of use is as follows:

[0035] Put 500g 70# bitumen in a 1-liter reaction vessel, heat the bitumen to 150°C, then add 4% furfural extraction oil (90% aromatic hydrocarbon content) to the bitumen, and use a high-speed shear emulsifier to continuously accelerate shearing. , and then add the rest of the components in the above proportions. The high-speed shearing emulsifier was kept at 3000 r / min and continued to stir for 30 minutes to obtain the modified asphalt product.

Embodiment 3

[0037] The asphalt anti-aging modifier in this example is composed of the following raw materials in weight fraction: 3 parts of furfural extraction oil (aromatic content 80%), 1.2 parts of polyethylene, 2 parts of sodium butylnaphthalene sulfonate, 2 parts of polyurethane, propylene 1.5 parts of alcohol, 0.2 part of high alumina powder, 0.2 part of octadecyl primary amine salt.

[0038] The method of use is as follows:

[0039]Put 500g of 70# asphalt in a 1-liter reaction vessel, heat the asphalt to 150°C, then add 3% furfural extract oil (80% aromatic content) into the asphalt, and use a high-speed shear emulsifier to continuously accelerate the shearing , and then add the remaining components according to the above ratio. The high-speed shear emulsifier keeps at 3000r / min and continues to stir for 30 minutes to obtain the modified asphalt product.

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Abstract

The invention discloses an asphalt anti-ageing modifier which is prepared from aromatic oil, polyethylene, butyl sodium sulfonate, polyurethane, allyl alcohol, high aluminum powder and octadecyl amine salt. After the asphalt anti-ageing modifier provided by the invention is added, the compaction performance of the asphalt is promoted; the pavement paved with the modified asphalt is high in quality and has better high-temperature anti-track capacity, water damage resistance and anti-ageing capacity; the three indexes, namely, needle penetration, softening point and ductility, of the asphalt are all obviously improved; the time and degree of asphalt hardening, brittleness and extensibility reduction are greatly prolonged and increased; the stability of the asphalt is guaranteed to a certain degree; the asphalt can meet the requirement for pavement construction in the areas under server weather and natural conditions; the asphalt anti-ageing modifier provided by the invention has the advantages that the use method is simple, the cost is low and the cost is saved.

Description

technical field [0001] The invention relates to an anti-aging asphalt modifier, belonging to the field of road materials. Background technique [0002] With the increasing development of society, the traffic flow and driving frequency are also increasing sharply, and the load of large freight vehicles is also increasing, which has higher requirements on the road, including further improving the flexibility of the road surface to ensure Anti-splitting ability at low temperature; improve the anti-wear ability of pavement and so on. Under such conditions, multi-functional and high-performance asphalt pavement materials can meet the urgent needs of road construction and development in my country. Among them, anti-aging performance, as an important index to ensure the quality of asphalt, has been paid more and more attention. Asphalt is the most important bonding material in asphalt concrete. Preventing asphalt aging is of great significance to prolong the service life of aspha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L91/00C08L75/04C08K13/02C08K5/42C08K5/05C08K3/08C08K5/17C08L95/00
CPCC08L23/06C08L91/00C08L95/00C08L2201/08C08L2205/03C08L2205/035C08L75/04C08K13/02C08K5/42C08K5/05C08K2003/0812C08K5/17
Inventor 马庆丰蒋福山时敬涛田翠芳李剑新李玉环段永生赵磊范成正
Owner PETROCHINA CO LTD
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