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Gemini cationic asphalt emulsifier and preparation method thereof

A technology of asphalt emulsifier and cation, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of amino hydroxyl compounds, etc., can solve problems such as increased production and construction costs, excessive use of emulsifiers, complex synthesis process, etc. Achieve the effects of overcoming the large amount of emulsifier, easy control of reaction conditions, and simple preparation process

Inactive Publication Date: 2017-08-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Today's road construction projects mainly use cationic emulsifiers. Although cationic emulsified asphalt meets the construction requirements, there are still some problems, such as complex synthesis process, excessive use of emulsifiers, and the need to add coagulation accelerators and retarders, etc. , which greatly increases the generation and construction costs of

Method used

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  • Gemini cationic asphalt emulsifier and preparation method thereof
  • Gemini cationic asphalt emulsifier and preparation method thereof
  • Gemini cationic asphalt emulsifier and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The preparation method of the gemini cationic asphalt emulsifier of twelve carbons, the concrete preparation steps are as follows:

[0026] At 25°C, 12.4g of aniline, 4ml of propionic acid, and 50ml of water were added to a single-necked flask, and the mixture was stirred for 15 minutes, then 28.27g of epichlorohydrin was added, and stirred for 18 hours. After the reaction was stopped, the layers were allowed to stand, and the water layer was removed. The obtained organic layer was washed with water, then recrystallized with ethyl acetate and petroleum ether, filtered with suction, and dried in vacuo. Intermediate I is obtained. Add 20.00g of dodecyldimethyl tertiary amine into the flask and stir. Dissolve 11.81g of intermediate I in absolute ethanol, add it dropwise into the flask, and reflux for 6 hours. Ethyl ester recrystallized. A twelve-carbon gemini cationic asphalt emulsifier is obtained.

Embodiment 2

[0028] The preparation method of the gemini cationic asphalt emulsifier of fourteen carbons, the concrete preparation steps are as follows:

[0029] At 25°C, 12.4g of aniline, 4ml of propionic acid, and 50ml of water were added to a single-necked flask, and the mixture was stirred for 15 minutes, then 28.27g of epichlorohydrin was added, and stirred for 18 hours. After the reaction was stopped, the layers were allowed to stand, and the water layer was removed. The obtained organic layer was washed with water, then recrystallized with ethyl acetate and petroleum ether, filtered with suction, and dried in vacuo. Intermediate I is obtained. 20.00g tetradecyl dimethyl tertiary amine was added into the flask and stirred, 9.35g of intermediate I was dissolved in absolute ethanol, added dropwise into the flask, and refluxed for 6 hours. Ethyl ester recrystallized. Fourteen carbon gemini cationic asphalt emulsifiers are obtained.

Embodiment 3

[0031] Preparation and performance test of emulsified asphalt:

[0032] Add 39 parts of warm water at 68°C to the beaker, then add 1 part of the emulsifier prepared in Example 1 into the warm water, and stir to prepare 40 parts of emulsifier aqueous solution. Add 60 parts of 140°C petroleum asphalt and emulsifier aqueous solution into a colloid mill for colloid milling to obtain emulsified asphalt. The performance of the obtained product was tested according to the standard, and the results are shown in Table 1.

[0033] The test performance result of the product obtained in embodiment 3 of table 1

[0034]

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Abstract

The invention discloses a gemini cationic asphalt emulsifier. The invention also relates to a preparation method of the gemini cationic asphalt emulsifier. The preparation method of the gemini cationic asphalt emulsifier particularly comprises the following steps: performing reaction aniline and epoxy chloropropane at a room temperature by taking water as a solvent to generate an intermediate N,N-di(2-hydroxyl-3-chloropropyl)aniline, and performing reaction on the generated intermediate and alkyl tertiary amine to generate a benzene ring-containing gemini cationic asphalt emulsifier. The gemini cationic asphalt emulsifier prepared by the method has the advantages of easy access of raw materials, low cost, simplicity in synthesis, as well as no need of acid regulation and convenience in use in actual application, and is characterized by not requiring the addition of a coagulation accelerator and a retarding admixture. When asphalt emulsion is prepared by using the emulsifier, the use amount of the emulsifier can be remarkably reduced, the defect that the use amount of the emulsifier is slightly larger in the existing preparation of the asphalt emulsion is overcome, and the asphalt emulsion can be suitable for slurry seal coat and micro-surfacing position well.

Description

technical field [0001] The invention relates to a gemini cationic asphalt emulsifier and a preparation method of the gemini cationic asphalt emulsifier, belonging to the technical field of road traffic. Background technique [0002] With the rapid development of my country's road traffic, the use of road asphalt has greatly increased. People found that traditional hot asphalt has a series of disadvantages, such as inconvenient construction, environmental pollution, excessive energy consumption, unsafe production, etc., so emulsified asphalt began to appear and be applied. The emulsified asphalt is mechanically dispersed under the action of an emulsifier, so that the asphalt is dispersed in water in the form of fine particles to form an emulsion, and the emulsified asphalt can be used at room temperature. This technology can save the heating step before construction, reduce fuel consumption, improve production efficiency, and reduce environmental pollution. The key material...

Claims

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Application Information

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IPC IPC(8): C07C213/02C07C215/40C08J3/03C08L95/00
CPCC07C213/02C07C213/04C07C215/40C08J3/03C08J2395/00C07C215/12
Inventor 刘佳佳许虎君谢益诚
Owner JIANGNAN UNIV
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