Modified asphalt stabilizer and preparation method thereof

A technology of modified asphalt and stabilizer, applied in building components, building insulation materials, buildings, etc., can solve the problems of high price of liquid stabilizer and long procurement cycle, and achieve the advantages of storage and long-distance transportation, and improve the cross-linking effect. And the effect of stable quality and easy combination

Inactive Publication Date: 2016-06-08
ZHONGHAI ASPHALT SICHUAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no domestic manufacturer specializing in the production of liquid stabilizers. Domestic manufacturers of stabilizers mainly produce solid stabilizers; imported liquid stabilizers are expensive, with a price of about 27,500 yuan per ton, and the procurement cycle is longer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A modified asphalt stabilizer, composed of elemental sulfur, sodium polysulfide, rubber oil, 200# asphalt and dispersant, the weight percentage of each component is elemental sulfur: 25%, sodium polysulfide: 15%, rubber oil: 35%, 200# asphalt: 21%, dispersant: 4%, the preparation method is: crush the elemental sulfur and sodium polysulfide to 200 mesh, stir and disperse with rubber oil, and it is in a uniformly dispersed state, and put in 200# asphalt to reconcile After uniformity, add dispersant and stir evenly, control the blending temperature to 70°C, and form a physically blended suspension to obtain a liquid stabilizer.

Embodiment 2

[0021] A modified asphalt stabilizer, composed of elemental sulfur, potassium polysulfide, rubber oil, 200# asphalt, and dispersant, the weight percentage of each component is elemental sulfur: 25%, potassium polysulfide: 15%, rubber oil: 30%, 200# asphalt: 28%, dispersant: 2%; the preparation method is: crush elemental sulfur and potassium polysulfide to 200 mesh, stir and disperse with rubber oil, and put in 200# asphalt to blend After uniformity, add dispersant and stir evenly, control the blending temperature to 90°C, and form a physically blended suspension to obtain a liquid stabilizer.

Embodiment 3

[0023] A modified asphalt stabilizer, composed of elemental sulfur, sodium polysulfide, rubber oil and 200# asphalt, dispersant, the weight percentage of each component is elemental sulfur: 25%, sodium polysulfide: 15%, rubber oil: 35%, 200# asphalt: 23%, dispersant: 2%; the preparation method is: crush elemental sulfur and sodium polysulfide to 200 mesh, stir and disperse with rubber oil, and put in 200# asphalt to blend After uniformity, add dispersant and stir evenly, control the blending temperature to 80°C, and form a physically blended suspension to obtain a liquid stabilizer.

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PUM

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Abstract

The invention discloses a modified asphalt stabilizer and a preparation method thereof. The stabilizer is prepared from, by weight, 20-40% of elemental sulfur, 10-20% of organic sulfur, 20-40% of rubber oil, 20-35% of 200# asphalt and 1-5% of dispersing agent. The prepared stabilizer is in a liquid state. Compared with a traditional solid modified asphalt stabilizer, the modified asphalt stabilizer can be combined with all kinds of different modified asphalt products more easily, the stability of modified asphalt can be improved, and storage and long-distance transportation of the modified asphalt can be benefited better.

Description

technical field [0001] The invention relates to a stabilizer, in particular to a modified asphalt stabilizer and a preparation method thereof. Background technique [0002] Modified asphalt is more and more widely used in high-grade highways because of its excellent road performance. To produce high-quality modified asphalt, it is very important to add stabilizers. Modified asphalt is a system composed of polymer modifier as the dispersed phase, which is uniformly dispersed into the continuous phase of base asphalt with a certain particle size by physical methods. Because the molecular weight, solubility parameter and polarity of polymer modifier and base asphalt are very different, there is only partial adsorption and compatibility between them, but not complete melting. This structure is a thermodynamically unstable structure, which is prone to separation between the two phases, resulting in segregation. This instability is detrimental to the storage stability of modifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08L95/00C08L101/02C08K3/06C08K3/30
CPCC08L91/00C08L95/00C08L2205/03C08L101/025C08K3/06C08K2003/3009
Inventor 康武高宇王春江吕为勇游丽谢彬李化宇
Owner ZHONGHAI ASPHALT SICHUAN CO LTD
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