Dication asphalt emulsifier containing ethoxy as well as preparation method and application of dication asphalt emulsifier

A technology of asphalt emulsifier and dication, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of reducing the stability of emulsified asphalt, achieve the effects of reducing the demulsification speed, increasing the number of charge points, and improving stability

Inactive Publication Date: 2015-09-02
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, from a structural point of view, the emulsifier not only contains catio

Method used

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  • Dication asphalt emulsifier containing ethoxy as well as preparation method and application of dication asphalt emulsifier
  • Dication asphalt emulsifier containing ethoxy as well as preparation method and application of dication asphalt emulsifier
  • Dication asphalt emulsifier containing ethoxy as well as preparation method and application of dication asphalt emulsifier

Examples

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Embodiment 1

[0029] Embodiment 1 (preparation and structural analysis of the dicationic asphalt emulsifier containing ethoxy group)

[0030] One, the preparation of intermediate B:

[0031] 2.97g (0.01mol) of octadecyldimethyl tertiary amine and 1.11g (0.012mol) of epichlorohydrin were dissolved in absolute ethanol, and stirred with magnetic force at 55°C for 8 hours, cooled to room temperature and distilled under reduced pressure. After washing with acetone, suction filtration, and vacuum drying at 40°C, intermediate B was obtained with a yield of 87.3%.

[0032] Two, the preparation of intermediate C:

[0033] 11.64g (0.02mol) fatty alcohol polyoxyethylene ether (9) is dissolved in n-hexane, add 0.322g (0.001mol) tetrabutylammonium bromide, add 0.96g (0.024mol) sodium hydroxide, stir to make it dissolve After 30 minutes, add the intermediate B obtained above, stir the reaction at 60°C for 10 hours, cool to room temperature, distill under reduced pressure, wash with ethyl acetate and ac...

Embodiment 2

[0049] 1. Preparation of ethoxy-containing dicationic asphalt emulsifier:

[0050] 14.85g (0.05mol) of octadecyldimethyl tertiary amine and 5.55g (0.06mol) of epichlorohydrin were dissolved in absolute ethanol, and stirred with magnetic force at 55°C for 8 hours, cooled to room temperature and distilled under reduced pressure. Intermediate B is obtained.

[0051] 58.20g (0.10mol) fatty alcohol polyoxyethylene ether (9) is dissolved in n-hexane, add 1.61g (0.005mol) tetrabutylammonium bromide, add 4.80g (0.12mol) sodium hydroxide, stir to make it dissolve After 30 minutes, the above-mentioned intermediate B was added, and the reaction was carried out under magnetic stirring at 60° C. for 10 hours. After cooling to room temperature, the reaction was distilled under reduced pressure to obtain intermediate C.

[0052] Dissolve the above intermediate C in n-hexane, add 0.81g (0.0025mol) tetrabutylammonium bromide, add 3.0g (0.075mol) sodium hydroxide, stir to dissolve, add 15.15g ...

Embodiment 3

[0058] 1. Preparation of ethoxy-containing dicationic asphalt emulsifier:

[0059] Except that 58.20g fatty alcohol polyoxyethylene ether (9) was replaced with 49.40g fatty alcohol polyoxyethylene ether (7), others were the same as in Example 2. The obtained asphalt emulsifier is used for future use.

[0060] 2. Preparation of emulsified asphalt:

[0061] According to the method of Example 2, the emulsifier obtained above was used to emulsify asphalt. The data of various performance tests are: the emulsified asphalt is cationic, can be stored stably for 7 days, the evaporation residue is 61.2%, and the residue on the sieve is 0.05%. The time is 85 minutes. It meets the requirements of "Technical Specifications for Highway Asphalt Construction".

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Abstract

The invention discloses a dication asphalt emulsifier containing ethoxy as well as a preparation method and application of the dication asphalt emulsifier. The emulsifier has a structural formula shown in the specification. The preparation method of the emulsifier comprises the following steps: dissolving fatty alcohol-polyoxyethylene ether into an organic solvent, adding a catalyst, adding sodium hydroxide after the fatty alcohol-polyoxyethylene ether is dissolved, and stirring to dissolve sodium hydroxide; adding an intermediate B after 30 minutes; performing magnetic stirring at 50-70DEG C to react for 6-12 hours; cooling to the room temperature, and then performing reduced pressure distillation, washing and carrying out suction filtration; performing vacuum drying at 40 DEG C to obtain an intermediate C; dissolving the intermediate C into the organic solvent, adding a catalyst, adding sodium hydroxide after the intermediate C is dissolved, and adding epoxy propyl-trimethyl ammonium chloride to react for 6-12 hours; and performing washing, suction filtration and drying to obtain a product. The asphalt emulsifier disclosed by the invention is low in raw material price and production cost, the preparation method is simple in process and low in reaction temperature, and the temperature needed by synthetic reaction is 40-70 DEG C. In the structural formula shown in the specification, n is equal to 12, 14, 16 or 18, and m is equal to 3, 5, 7, 9, 15, 20 or 25.

Description

technical field [0001] The invention relates to a preparation method and application of a novel asphalt emulsifier, in particular to a preparation method of an ethoxy-containing dicationic asphalt emulsifier and its application in emulsifying asphalt. Background technique [0002] In recent years, in order to speed up the speed of road construction, the transportation department has vigorously promoted the use of emulsified asphalt, especially as the road network structure is becoming more and more perfect, the regular maintenance and repair of the paved road surface is becoming more and more important, especially to meet the requirements of slurry sealing The slow-cracking and fast-setting asphalt emulsifier required by the layer technology has become a hot spot in current research and application. Cationic asphalt emulsifiers, especially quaternary ammonium salt cationic emulsifiers, have become the most widely used asphalt emulsifiers due to their strong adhesion to stone...

Claims

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Application Information

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IPC IPC(8): C08J3/03C08L95/00C08G65/337C08G65/333
Inventor 王月欣高雅芹张倩孟清张广林
Owner HEBEI UNIV OF TECH
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