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Anti-ultraviolet-aging emulsified asphalt and preparation method thereof

An anti-ultraviolet aging, emulsified asphalt technology, used in building components, building insulation materials, buildings, etc., can solve problems such as poor compatibility and lack of active groups, achieve good compatibility, improve electrical conductivity, and expand the scope of application Effect

Pending Publication Date: 2021-05-11
胡浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular chain of benzotriazole UV absorbers lacks active groups and has poor compatibility with polymer compounds in asphalt mixtures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] S1. Preparation of diazonium salt: Prepare 30 parts of mixed solution of hydrochloric acid and sodium nitrite with a mass percentage of 8%, add 3 parts of o-nitrochloroaniline, control the reaction temperature at 0°C, stir for 10 minutes, add 7 parts of uric acid and continue stirring 6min, get diazonium salt;

[0042] S2. Azo modification: put 25 parts of diazonium salt in 70 parts of ethanol solution and stir to disperse, adjust the pH value to 9, stir for 30 minutes, add 8 parts of hydroquinone, and slowly raise the temperature to 55 while stirring °C, to obtain material A;

[0043] S3. Synthesizing the copolymer monomer: adding thiourea dioxide to the material A, and continuing to stir to obtain the copolymer monomer;

[0044] S4. Preparation of emulsified asphalt: Add 20 parts of aniline to 35 parts of hydrochloric acid solution and stir to disperse, then add 1 part of emulsifier, 0.5 parts of ammonium persulfate, 0.3 parts of toughening agent, 1 part of curing ag...

Embodiment 2

[0052] S1. Preparation of diazonium salt: Prepare 38 parts of mixed solution of hydrochloric acid and sodium nitrite with a mass percentage of 9.5%, add 4 parts of o-nitrochloroaniline, control the reaction temperature at 1°C, stir for 17 minutes, add 7.5 parts of uric acid and continue stirring 7min, get diazonium salt;

[0053] S2. Azo modification: put 28 parts of diazonium salt in 80 parts of ethanol solution and stir to disperse, adjust the pH value to 10, stir for 38 minutes, add 9 parts of hydroquinone, and slowly raise the temperature to 58 while stirring °C, to obtain material A;

[0054] S3. Synthesizing the copolymer monomer: adding thiourea dioxide to the material A, and continuing to stir to obtain the copolymer monomer;

[0055] S4. Preparation of emulsified asphalt: Add 23 parts of aniline to 38 parts of hydrochloric acid solution and stir to disperse, then add 2 parts of emulsifier, 0.9 parts of ammonium persulfate, 0.6 parts of toughening agent, 1.3 parts of ...

Embodiment 3

[0063] S1. Preparation of diazonium salt: prepare 42 parts of hydrochloric acid and sodium nitrite mixed solution with a mass percentage of 10%, add 7 parts of o-nitrochloroaniline, control the reaction temperature at 3°C, stir for 30 minutes, add 8 parts of uric acid and continue stirring 8min, get diazonium salt;

[0064] S2. Azo modification: put 28 parts of diazonium salt in 80 parts of ethanol solution, stir and disperse, adjust the pH value to 11, stir for 38 minutes, add 10 parts of hydroquinone, and slowly raise the temperature to 58 while stirring °C, to obtain material A;

[0065] S3. Synthesizing the copolymer monomer: adding thiourea dioxide to the material A, and continuing to stir to obtain the copolymer monomer;

[0066] S4. Preparation of emulsified asphalt: Add 28 parts of aniline to 42 parts of hydrochloric acid solution to stir and disperse, then add 3 parts of emulsifier, 1.3 parts of ammonium persulfate, 0.8 parts of toughening agent, 1.7 parts of curing ...

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Abstract

The invention discloses anti-ultraviolet-aging emulsified asphalt and a preparation method thereof. The method comprises the following steps: S1, preparing a mixed solution of hydrochloric acid and sodium nitrite, adding o-nitrochloroaniline and uric acid, and conducting stirring to obtain diazonium salt; S2, placing the diazonium salt in an ethanol solution, conducting stirring and dispersing, adjusting the pH value, conducting stirring, and adding hydroquinone to obtain a material A; S3, adding thiourea dioxide into the material A, and conducting stirring to obtain a copolymer monomer; and S4, adding aniline into a hydrochloric acid solution, conducting stirring, sequentially adding an emulsifier, ammonium persulfate, a flexibilizer, a curing agent and water-borne epoxy resin, adding the copolymer monomer and matrix asphalt, and conducting emulsifying to obtain the emulsified asphalt. The prepared emulsified asphalt mixture is good in conductivity, high in stability, excellent in ultraviolet aging resistance, mild in technological process, simple in reaction principle, very suitable for industrial production and market application and popularization, capable of greatly prolonging the service life of an asphalt material and extremely high in economic value and practicability.

Description

technical field [0001] The invention relates to the technical field of emulsified asphalt, in particular to an anti-ultraviolet aging emulsified asphalt and a preparation method thereof. Background technique [0002] Asphalt has excellent moisture-proof, waterproof, and anti-corrosion properties, and is widely used in high-grade highways, bridges across rivers, and airport runways in my country. Conventional asphalt has a high resistivity, which limits its application in winter snow melting, safety monitoring, and energy management. In order to improve the conductivity of asphalt materials, people usually add metal powder, carbon fiber, graphite powder and other materials to the asphalt mixture, but the surface of this kind of conductive material lacks active functional groups, and the compatibility with asphalt mixture is poor. The electrical conductivity of asphalt mixture is limited, and the cost is high, so it is difficult to realize its popularization and use. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/00C08L79/04C08G73/08
CPCC08L95/00C08G73/08C08L2205/03C08L2201/08C08L63/00C08L79/04
Inventor 胡浩
Owner 胡浩
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