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Asphalt composition and preparation method thereof

A kind of asphalt composition and asphalt technology, which is applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems of unit cost pressure, large consumption, high unit price, etc., and achieve low cost, strong anti-aging ability, and delay delay degree of effect

Active Publication Date: 2012-07-18
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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  • Asphalt composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 1193.8g (94.46wt%) of penetration into the enamel cup of 2 liters and be the Tahe residual oil of 70 (1 / 10mm) and 52g (4.09wt%) minus tetracenol extraction oil, be heated up to 140 ℃. Then, 12g (0.95wt%) SBR 1500 particles, 10.1g (0.80wt%) urea, 2.5g (0.20wt%) maleic anhydride were added, and the high shear machine was started to shear for 30min. 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 2

[0034] Add 1252g (98.43wt%) of Tahe residual oil with a penetration of 107 (1 / 10mm) into a 2-liter enamel cup. When the residual oil is heated up and stabilized at 140°C, add 8g (0.63wt%) SBR1502 Granules and 7g (0.55wt%) urea and 5g (0.39wt%) maleic anhydride, simultaneously start the high shear machine to shear for 30min. 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.

Embodiment 3～5

[0036] Add 1200g of 140°C Tahe residual oil with a penetration of 70 (1 / 10mm) into a 2-liter enamel cup, then add SBR1500 concentration of 16wt% styrene-butadiene rubber mother liquor 75g, and keep the mixture at 140°C. Then, add urea 3.9g (0.3wt%) and maleic anhydride 12.9g (1.0wt%), urea 19.5g (1.5wt%) and maleic anhydride 7.8g (0.6wt%), urea 13.0g (1.0wt%) respectively %) and maleic anhydride 7.8g (0.6wt%), start the stirrer and stir for 50min. 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 an asphalt composition and a preparation method thereof. The asphalt composition comprises 80.0 to 99.7 percent of residual oil and / or asphalt, 0.1 to 3.5 percent of additive, 0.2 to 5.0 percent of butadiene styrene rubber and 0 to 19 percent of extract oil, wherein the additive is a mixture of urea and maleic anhydride. The asphalt composition has high ageing resistance, and particularly can obviously delay the ductility of butadiene styrene rubber-containing asphalt in a high-temperature storage period, particularly the reduction rate of the ductility after a thin film oven test; and the used additive is lower in cost.

Description

technical field [0001] The invention relates to an asphalt composition and a preparation method thereof, in particular to a modified asphalt composition with good aging resistance under high-temperature storage conditions and a preparation method thereof. Background technique [0002] Through long-term research on the relationship between the road performance of asphalt and its properties, Shell Company 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 the ductility after hot mixing of asphalt and stone materials. As one of the important indicators of road asphalt performance, its size has a good correlation with pavement cra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L9/06C08L91/00C08K5/21C08K5/092
Inventor 刘树华
Owner CHINA PETROLEUM & CHEM CORP