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Asphalt-based graphene asphalt warm mix agent and preparation method thereof

An asphalt-based and graphene-based technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of few types, expensive warm mixes, poor universality, etc., and achieve good road performance and good compatibility and storage stability, high temperature anti-rutting performance improvement effect

Inactive Publication Date: 2019-06-07
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of warm mixing agent is expensive and there are relatively few types. At present, it mainly relies on imports, and its universality is also poor.

Method used

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  • Asphalt-based graphene asphalt warm mix agent and preparation method thereof
  • Asphalt-based graphene asphalt warm mix agent and preparation method thereof
  • Asphalt-based graphene asphalt warm mix agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add pitch-based graphene quantum dots and hexamine with a molar ratio of 1:1.1 into the reactor, add water-carrying agent xylene accounting for 30wt% of the total mass of the reaction raw materials, stir and heat up to reflux, and amidation reaction occurs at the reflux temperature, The reaction temperature was 150° C., and the reaction was carried out for 4 hours. Afterwards, the xylene was distilled off, vacuumed to a vacuum degree of 0.096 MPa, and the temperature was raised to 240° C. to carry out imidazoline cyclization reaction for 4 hours to obtain an imidazoline intermediate. Prepare an ethanol solution with a mass fraction of 50% from methyl acrylate with an imidazoline intermediate molar ratio of 1:1.1, and slowly add it dropwise to the imidazoline, and react for 12 hours under stirring at 40°C. After the reaction is completed, distill ethanol and unreacted Methyl acrylate to obtain pitch-based graphene-based asphalt warm mix agent.

[0020] Add the asphalt w...

Embodiment 2

[0022] Add pitch-based graphene quantum dots and hexamine with a molar ratio of 1:1.2 into the reactor, add water-carrying agent xylene accounting for 30wt% of the total mass of the reaction raw materials, stir and heat up to reflux, and amidation reaction occurs at the reflux temperature, The reaction temperature was 150° C., and the reaction was carried out for 4 hours. Afterwards, the xylene was distilled off, vacuumed to a vacuum degree of 0.096 MPa, and the temperature was raised to 240° C. to carry out imidazoline cyclization reaction for 4 hours to obtain an imidazoline intermediate. Prepare an ethanol solution with a mass fraction of 50% of methyl acrylate with an imidazoline intermediate molar ratio of 1:1.2, and slowly add it dropwise to the imidazoline, and react for 12 hours under stirring at 40°C. After the reaction is completed, distill ethanol and unreacted Methyl acrylate to obtain pitch-based graphene-based asphalt warm mix agent.

[0023] Add the asphalt war...

Embodiment 3

[0025] Add pitch-based graphene quantum dots and hexamine with a molar ratio of 1:1.1 into the reactor, add water-carrying agent xylene accounting for 30wt% of the total mass of the reaction raw materials, stir and heat up to reflux, and amidation reaction occurs at the reflux temperature, The reaction temperature was 150° C., and the reaction was carried out for 6 hours. Afterwards, the xylene was distilled off, the vacuum was evacuated to 0.096 MPa, and the temperature was raised to 240°C to carry out the imidazoline cyclization reaction for 6 hours to obtain the imidazoline intermediate. Prepare an ethanol solution with a mass fraction of 50% from methyl acrylate with an imidazoline intermediate molar ratio of 1:1.1, and slowly add it dropwise to the imidazoline, and react for 12 hours under stirring at 40°C. After the reaction is completed, distill ethanol and unreacted Methyl acrylate to obtain pitch-based graphene-based asphalt warm mix agent.

[0026] Add the asphalt w...

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Abstract

The invention discloses an asphalt-based graphene asphalt warm mix agent and a preparation method thereof, which is prepared from the following steps: 1) chemical oxidation of petroleum asphalt with concentrated nitric acid to obtain asphalt-based graphene quantum dots; 2) adding asphalt-based graphene quantum dots and long-chain aliphatic amine into a reactor, adding a certain amount of water carrying agent, stirring and heating, refluxing, and performing amidation reaction at that refluxing temperature to obtain an intermediate; 3) evaporating that water carrying agent in the reactant obtained in the step 2), heating the temperature under vacuum to carry out the imidazoline cyclization reaction to obtain the imidazoline intermediate; 4) preparing a certain quantity of quaternary aminating reagent into a certain mass fraction of ethanol solution, slowly dropping the ethanol solution into an imidazoline intermediate, reacting at a certain temperature under stirring conditions, and after the reaction is finished, distilling ethanol and unreacted quaternary aminating reagent under reduced pressure to obtain asphalt-based graphene asphalt warm mixer. The invention has good compatibility and storage stability, and the rutting resistance at high temperature is obviously improved.

Description

technical field [0001] The invention relates to the field of nanosurfactants, in particular to a pitch-based graphene-based asphalt warm mix agent and a preparation method thereof. Background technique [0002] The highway industry is an important part of my country's large transportation system, the foundation of national economic development, and the most concerned part of the national infrastructure construction projects every year, which is related to national economic and social development. In recent years, my country's highway industry has developed rapidly with the focus on expressway construction. At the same time, my country's road network has been basically completed, and the focus of the road industry has shifted from construction to maintenance. In the future, my country's road industry will be in the stage of "equal emphasis on construction and maintenance" for a long time. In highway construction and maintenance, asphalt pavement is widely used because of its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K5/3445
Inventor 赵品晖任瑞波王立志张泽宇崔梓玉杨子乔林轶周浩徐强孟伟坤范文淼
Owner SHANDONG JIANZHU UNIV
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