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Anti-aging polymer modified asphalt and preparation method thereof

A technology for modifying asphalt and polymers, used in building structures, building components, building insulation materials, etc., can solve the problems of complex composition, high cost of additives, and further improvement of anti-aging properties.

Active Publication Date: 2014-04-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methods for improving the anti-aging of asphalt in the above-mentioned prior art have one or several deficiencies such as the anti-aging performance needs to be further improved, the cost of additives is high, and the composition is complicated.

Method used

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  • Anti-aging polymer modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 0.4 parts of hydrotalcite (particle size 20-40nm, magnesium-aluminum atomic ratio 2:1) to 2 parts of dispersant ethylene glycol, ultrasonically disperse for 10 minutes, and then add the slurry to 100 parts at a temperature of 165-175°C The SBS modified asphalt (penetration of 72 1 / 10mm at 25°C, softening point of 68.6°C, ductility at 5°C of 42cm) was stirred and mixed for 1 hour to obtain SBS modified asphalt with good anti-aging performance.

Embodiment 2

[0020] Add 0.8 parts of hydrotalcite (particle size 20-40nm, magnesium-aluminum atomic ratio 2:1) to 4 parts of dispersant ethylene glycol, ultrasonically disperse for 10 minutes, and then add the slurry to 100 parts at a temperature of 165-175°C The SBS modified asphalt (penetration of 72 1 / 10mm at 25°C, softening point of 68.6°C, ductility at 5°C of 42cm) was stirred and mixed for 1 hour to obtain SBS modified asphalt with good anti-aging performance.

Embodiment 3

[0022] Add 1.2 parts of hydrotalcite (particle size 20-40nm, magnesium-aluminum atomic ratio 2:1) into 6 parts of dispersant ethylene glycol, ultrasonically disperse for 10 minutes, and then add the slurry to 100 parts at a temperature of 165-175°C The SBS modified asphalt (penetration of 72 1 / 10mm at 25°C, softening point of 68.6°C, ductility at 5°C of 42cm) was stirred and mixed for 1 hour to obtain SBS modified asphalt with good anti-aging performance.

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Abstract

The present invention discloses anti-aging polymer modified asphalt and a preparation method thereof. The anti-aging polymer modified asphalt comprises, by mass, 100 parts of polymer modified asphalt, 0.4-1.2 parts of nano-material hydrotalcite, and 2-6 parts of a dispersing agent. The preparation method comprises: adding the nano-material hydrotalcite to the dispersing agent, uniformly dispersing, then adding the resulting mixture to the polymer modified asphalt with a temperature of 165-175 DEG C, uniformly stirring and mixing to obtain the anti-aging polymer modified asphalt. According to the present invention, the anti-aging polymer modified asphalt of the present invention has good anti-aging performance, the additive cost is low, and the preparation is simple.

Description

technical field [0001] The invention relates to a polymer modified asphalt composition and a preparation method thereof, in particular to an anti-aging polymer modified asphalt composition and a preparation method thereof. Background technique [0002] With the development of transportation, the traffic flow increases and the vehicle weight increases, it is difficult for the matrix asphalt pavement to meet the requirements of traffic load and natural environment. Compared with base asphalt, polymer-modified asphalt has greatly improved high-temperature flow resistance and low-temperature crack resistance. SBS modified asphalt is the most widely used polymer modified asphalt at home and abroad because of its high temperature resistance, low temperature resistance, wide temperature range and good mechanical properties. In my country, the upper layer of most asphalt pavement uses polymer modified asphalt. [0003] The polymers used in asphalt and modified asphalt mainly conta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L21/00C08K3/26
Inventor 李明林刘树华宁爱民
Owner CHINA PETROLEUM & CHEM CORP