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Modified asphalt composition and preparation method thereof

The technology of modified asphalt and composition is applied in the field of high-temperature anti-aging agent and additives for delaying the decline rate of asphalt ductility. Anti-aging performance, low cost effect

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the unit price of asphalt anti-aging additives is too high and the dosage is too large, it will bring cost pressure to the user unit and lose market competitiveness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0031]Add 1194g of Tahe residual oil with a penetration of 70 (1 / 10mm) and 52g of Tetracinol-reduced extracted oil into a 2-liter enamel cup, and heat up to 140°C. Then, an additional 12 g of SBR 1500 granules and 10.1 g of ethanolamine were added. Embodiment 1 is monoethanolamine, embodiment 2 is diethanolamine, embodiment 3 is triethanolamine. At the same time, start the high shear machine to shear for 30 minutes to obtain the modified asphalt composition. Then, about 400g of samples were taken out to measure properties, and the remaining samples were put into 1 liter enamel cups, and put into a blast drying oven at 140°C for high-temperature storage test.

Embodiment 4~7

[0033] Add 1252g of Tahe residue oil with a penetration of 107 (1 / 10mm) into a 2-liter enamel cup. When the temperature of the residue rises and stabilizes at 140°C, add 8g of SBR1502 particles and ethanolamine, and start the high-shear machine at the same time. Cut for 30 minutes to obtain a modified asphalt composition. Then, about 400g of samples were taken out to measure properties, and the remaining samples were put into a 1-liter enamel cup and put into a blast drying oven at 140°C for high-temperature aging test.

[0034] Wherein, the ethanolamine composition of embodiment 4 is monoethanolamine 8.4g, diethanolamine and triethanolamine are respectively 1.8g; embodiment 5 is monoethanolamine 8.4g, diethanolamine 3.6g; embodiment 6 is monoethanolamine 8.4g, triethanolamine 3.6g ; Embodiment 7 is diethanolamine 5g, triethanolamine 6g.

Embodiment 8

[0036] Add 1200g of 140°C Tahe residual oil with a penetration of 70 (1 / 10mm) into a 2-liter enamel cup, and then add 75g of styrene-butadiene rubber mother liquor with a SBR1500 concentration of 16wt%, and keep the mixture at 140°C. Then, 8 g of monoethanolamine and 4 g of diethanolamine were added respectively, and the stirrer was started to stir for 50 minutes. Then, about 400g of samples were taken out to measure properties, and the remaining samples were put into a 1-liter enamel cup and put into a blast drying oven at 140°C for high-temperature aging test.

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Abstract

The invention discloses a modified asphalt composition and a preparation method thereof. The modified asphalt composition comprises the following components by weight: 90%-98% of matrix asphalt, 0.2%-6% of butadiene styrene rubber, and 0.1%-4% of additives, wherein the additive is one or more than one of ethanolamine, diethanolamine or triethanolamine. The asphalt composition of the invention is strong in aging resistance, significantly improves the ductility of butadiene styrene rubber-containing asphalt in the high temperature storage period, especially delays the decrease of the ductility after thin film oven tests, is low in additive cost, and is convenient to use.

Description

technical field [0001] The present invention relates to an asphalt composition and a preparation method thereof, especially a modified asphalt composition with good aging resistance under high temperature storage conditions and a preparation method thereof, more particularly a high temperature antiaging agent, specifically It is an additive for delaying the rate of decline in asphalt ductility under high temperature storage conditions. Background technique [0002] Through the research on the relationship between the road performance of asphalt and its properties, the field believes that low temperature ductility is one of the three most important properties of asphalt binder, reflecting the colloidal stability and cohesion of asphalt. Generally speaking, asphalt users are very concerned about the ductility of asphalt, especially the low-temperature ductility (such as 10°C and 15°C ductility) after the film oven test. It is generally believed that the ductility represents t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/06C08K5/17C08K5/01
CPCY02A30/30
Inventor 刘树华李明林郭皎河张建峰傅丽姚汉荣
Owner CHINA PETROLEUM & CHEM CORP
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