SBS modified asphalt regenerant and preparation method thereof

A technology of modified asphalt and regeneration agent, which is applied in the direction of building components, building insulation materials, construction, etc., can solve the problems of increased use cost and low reaction efficiency, and achieve the effect of facilitating recovery, uniform crystals, and preventing raw material agglomeration

Active Publication Date: 2020-12-18
FOSHAN TRANSPORTATION SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural repair agent is used to react with aged asphalt. This solution will lead to other side reactions, which will reduce the reaction efficiency and increase the cost of use. At the same time, due to the complexity of the aging of modified asphalt, there are certain problems whether the structural repair agent will react.

Method used

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  • SBS modified asphalt regenerant and preparation method thereof
  • SBS modified asphalt regenerant and preparation method thereof
  • SBS modified asphalt regenerant and preparation method thereof

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preparation example Construction

[0065] Correspondingly, refer to figure 1 , the present invention also discloses a preparation method of the above-mentioned SBS modified asphalt regenerant, which specifically includes the following steps:

[0066] S1: preparing modified montmorillonite;

[0067] S2: Mix the extracted oil, waste lubricating oil, petroleum resin, solution-polymerized styrene-butadiene rubber, SBS, plasticizer, solubilizer, and dispersant, and shear at 120-180°C for 0.5-1h. ~180°C incubation for 0.5~1h to obtain the solution;

[0068] Specifically, various raw materials are mixed and sheared for 30-50 minutes at a rotational speed of 4000-6000 rpm. During the shearing process, the temperature is maintained at 150-160 ° C. After the shearing is completed, it is incubated for 40-60 minutes to obtain a solution.

[0069] Preferably, when nano-titanium dioxide is contained in the formula of the present invention, nano-titanium dioxide is mixed with various raw materials in this step.

[0070] S3...

Embodiment 1

[0074] The present embodiment provides a kind of SBS modified asphalt regeneration agent, and its formula is as follows:

[0075] 80 parts of extraction oil, 10 parts of waste lubricating oil, 15 parts of petroleum resin, 3 parts of solution polystyrene butadiene rubber, 5 parts of SBS, 5 parts of naphthenic oil, 3 parts of silane coupling agent, dodecyl dihydroxyethyl betaine 2 parts, 0.5 parts of polypropylene wax, 2 parts of modified montmorillonite, and 1 part of stabilizer; the stabilizer is formed by mixing calcium carbonate and barium sulfate with a mass ratio of 3:5.

[0076] Its preparation method is:

[0077] (1) Preparation of modified montmorillonite;

[0078] Mix nano-montmorillonite and 15% dilute sulfuric acid at a ratio of 1:8, stir at 60°C for 50min, cool the mixture to room temperature, and refrigerate at -25°C for 5h. The mixture was taken out, boiled and dried under 3 standard atmospheric pressure, and the dodecyldimethylbenzyl ammonium bromide solution w...

Embodiment 2

[0082] The present embodiment provides a kind of SBS modified asphalt regeneration agent, and its formula is as follows:

[0083] 80 parts of extracted oil, 10 parts of waste lubricating oil, 15 parts of petroleum resin, 3 parts of solution polystyrene butadiene rubber, 5 parts of SBS, 5 parts of naphthenic oil, 4 parts of nano-titanium dioxide, 2 parts of dodecyl dihydroxyethyl betaine part, 0.5 part of polypropylene wax, 2 parts of modified montmorillonite, and 1 part of stabilizer; the stabilizer is mixed with calcium carbonate and barium sulfate with a mass ratio of 3:5.

[0084] Its preparation method is:

[0085] (1) Preparation of modified montmorillonite;

[0086] Same as embodiment 1;

[0087] (2) Mix the extracted oil, waste lubricating oil, petroleum resin, solution polystyrene butadiene rubber, SBS, naphthenic oil, nano-titanium dioxide, dodecyl dihydroxyethyl betaine, and polypropylene wax at a speed of 4000rpm, Cut at a temperature of 170°C for 50 minutes, and...

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Abstract

The invention discloses an SBS modified asphalt regenerant and a preparation method thereof. The SBS modified asphalt regenerant comprises the following raw materials in parts by weight: 60-80 parts of extract oil, 10-20 parts of waste lubricating oil, 15-25 parts of petroleum resin, 2-10 parts of solution polymerized styrene-butadiene rubber, 3-10 parts of SBS, 5-10 parts of a plasticizer, 1-15 parts of a dissolution promoter, 0.5-3 part of a dispersing agent and 1-5 parts of modified montmorillonite. The modified montmorillonite is prepared by the following method comprising steps of uniformly mixing nano montmorillonite with an aqueous solution, carrying out low-temperature treatment at -30 to -10 DEG C, and then carrying out intercalation treatment by adopting an intercalating agent, so as to obtain the modified montmorillonite. By implementing the method, the high-temperature performance and the low-temperature performance of the old asphalt can be recovered simultaneously, and the cost of the regenerant is low.

Description

technical field [0001] The invention relates to the technical field of bitumen regeneration, in particular to an SBS modified bitumen regeneration agent and a preparation method thereof. Background technique [0002] The regeneration of asphalt is the reverse process of aging. Usually, regenerants such as corn oil and aromatic oil can be added to regenerate aged asphalt. After the rejuvenator is added, the relative content of asphaltene is reduced, and the dissolving ability of soft asphaltene to asphaltene is improved, the compatibility of asphalt is improved, the penetration and ductility of asphalt are improved, and the asphalt is restored or close to the original performance. [0003] There are many studies on asphalt regeneration in the current technology, such as a low-temperature recycled asphalt binder and its application with the patent number CN201510689827.2, which uses petroleum asphalt, aromatic oil, thermoplastic elastomers, and surfactants to achieve performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L9/06C08L57/02C08K13/06C08K9/04C08K9/02C08K3/34C08K5/54C08K5/19C08K3/26C08K3/30
CPCC08K2003/265C08K2003/3045C08K2201/011C08L91/00C08L95/00C08L2205/025C08L2205/035C08L2555/34C08L2555/50C08L2555/84C08L9/06C08L57/02C08K13/06C08K9/04C08K9/02C08K3/346C08K5/54C08K5/19C08K3/26C08K3/30
Inventor 郭立成吴超凡方杨周艺曾国东韩庆奎丁思尹温广香李超刘晟袁妙成天欣徐艺珅
Owner FOSHAN TRANSPORTATION SCI & TECH CO LTD
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