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Asphalt modifying agent and modified asphalt

A technology of asphalt modifier and modified asphalt, which is applied in the direction of building components, building insulation materials, buildings, etc. It can solve the problems of unsatisfactory asphalt performance improvement, asphalt performance limitation, and difficulty in dispersion modification, etc., and achieves obvious modification effect , small dosage, good effect of changing

Inactive Publication Date: 2017-02-15
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There have been many studies on nanomaterial modified asphalt, and the most researched is inorganic nanopowder materials, mainly focusing on inorganic oxide nanopowder materials, including silicon oxide, aluminum oxide, zinc oxide, titanium dioxide and ferroferric oxide, etc. Its particle size is above 20 nanometers, and it is difficult to disperse and modify, which is unsatisfactory for the improvement of asphalt performance; the use of organic layered silicate intercalation to obtain two-dimensional sheet nanomaterial modified asphalt has low cost, and the asphalt The effect of performance improvement is good, but due to the large size of the flake plane, the further improvement of asphalt performance is limited

Method used

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  • Asphalt modifying agent and modified asphalt
  • Asphalt modifying agent and modified asphalt
  • Asphalt modifying agent and modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 1 gram of vinyl POSS into 10 grams of trichlorethylene, fully dissolve, add 0.02 grams of KH550, 99 grams of asphalt, stir well, and carry out polymerization and solvent volatilization at 110 ° C to obtain POSS modified asphalt, the POSS modified Asphalt dynamic shear modulus table 2:

[0024] Table 2

[0025]

[0026]

[0027] From the above results, it can be seen that in the modified asphalt of the present invention, when the amount of POSS containing organic functional groups is small, the anti-rutting factor decreases, the elastic modulus decreases significantly, and the anti-fatigue performance is greatly improved.

Embodiment 2

[0029] Add 2.5 grams of vinyl POSS into 10 grams of trichlorethylene, fully dissolve, add 0.03 grams of KH550, 97 grams of asphalt, stir well, and carry out polymerization and solvent volatilization at 120 ° C to obtain POSS modified asphalt, the POSS modified The dynamic shear modulus of asphalt is shown in Table 3:

[0030] table 3

[0031]

[0032] From the above results, it can be seen that when the content of POSS containing organic functional groups increases, the elastic modulus also increases, but it is lower than the increase in anti-rutting factor, and the performance of asphalt is significantly modified.

Embodiment 3

[0034] Add 3 grams of vinyl POSS into 10 grams of trichlorethylene, fully dissolve, add 0.03 grams of KH550, 97 grams of asphalt, stir evenly, and carry out polymerization and solvent volatilization at 120 ° C to obtain POSS modified asphalt.

[0035] The dynamic shear modulus of 3% POSS modified asphalt is shown in Table 4:

[0036] Table 4

[0037]

[0038] From the above results, it can be seen that when the content of POSS containing organic functional groups increases, the elastic modulus also increases, but it is lower than the increase in anti-rutting factor, and the performance of asphalt is significantly modified.

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Abstract

The invention relates to an asphalt modifying agent and modified asphalt. The asphalt modifying agent is prepared from the following raw materials: polysilsesquioxane with organic functional groups, an organic solvent and a coupling agent, wherein the polysilsesquioxane with organic functional groups is silanol polyisilsesquioxane, octavinyl polyisilsesquioxane, octyl phenolic hydroxyl polyisilsesquioxane, octylamine hydrochloride polyisilsesquioxane, phenyl polyisilsesquioxane, chloropropyl polyisilsesquioxane, fluoridized polyisilsesquioxane or methacrylate isobutyl polyisilsesquioxane. The modified asphalt is prepared from the following raw materials: the polysilsesquioxane with the organic functional groups, the organic solvent, the coupling agent and asphalt. The POSS (polysilsesquioxane) is used as the asphalt modifying agent, and during asphalt modification, the using amount of the modifying agent is small and the modifying effect is obvious; the modifying principle is simple, and according to different requirements of asphalt performance, the POSS with different functional groups is added for modifying, so that flexibility and changeability are high.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a method for preparing a road asphalt nano-modified material. Background technique [0002] There have been many studies on nanomaterial modified asphalt, and the most researched is inorganic nanopowder materials, mainly focusing on inorganic oxide nanopowder materials, including silicon oxide, aluminum oxide, zinc oxide, titanium dioxide and ferroferric oxide, etc. Its particle size is above 20 nanometers, and it is difficult to disperse and modify, which is unsatisfactory for the improvement of asphalt performance; the use of organic layered silicate intercalation to obtain two-dimensional sheet nanomaterial modified asphalt has low cost, and the asphalt The effect of performance improvement is good, but due to the large size of the flake plane, the further improvement of asphalt performance is limited. Contents of the invention [0003] Aiming at the defects or def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L83/04C08K5/544
CPCC08L95/00C08L2205/08
Inventor 赵鹏白帆冯雷艾涛阎鑫徐鸥明王振军
Owner CHANGAN UNIV
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