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Method for preparing cold-recycling asphalt emulsification additive

A technology of emulsified asphalt and cold recycling, applied in the field of cold recycled asphalt, can solve the problems of unsatisfactory emulsification performance and road performance, unable to open traffic in advance, etc., and achieve the effects of high yield, good emulsification performance and mild reaction conditions

Active Publication Date: 2013-05-22
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emulsification performance and road performance of the cold recycled asphalt emulsifiers currently available on the market are not very satisfactory, and the traffic cannot be opened in advance. Therefore, it is imminent to develop high-performance cold recycled asphalt emulsifiers.

Method used

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  • Method for preparing cold-recycling asphalt emulsification additive
  • Method for preparing cold-recycling asphalt emulsification additive
  • Method for preparing cold-recycling asphalt emulsification additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take 10.13g (0.1mol) of diethylenetriamine and add it to a reactor containing 20mL of absolute ethanol and 15mL of dioxane, and slowly add 8.3g (0.1mol) of 37% formaldehyde solution after raising the temperature to 10°C , reacted at room temperature for 2 hours, then cooled to 0°C to obtain an intermediate product, then added 20.6g (0.1mol) of octylphenol, raised the temperature to 80°C and refluxed for 5h to generate a Mannich base; finally at 80°C Add 10.2g (0.1mol) of epichlorohydrin dropwise, and react for 4 hours after the dropwise addition to obtain the cold regenerated emulsified asphalt additive. The yield obtained by liquid chromatography is 87.4%.

[0038] Weigh 35g moist EA-501 (produced by Jiangsu Bote New Material Co., Ltd.) and 10g of cold recycled emulsified asphalt additive, then add water to 350g, add dilute hydrochloric acid to about PH=2.5, and finally add water to 400g to obtain a soap solution.

[0039] Take 600g of SK70# asphalt (produced by Jian...

Embodiment 2

[0053]Take 21.94g (0.15mol) of triethylenetetramine and add it into a reactor filled with 50mL of toluene, and slowly add 10.6g (0.1mol) of benzaldehyde solution after raising the temperature to 40°C. After reacting at 40°C for 5h, cool down to 0°C to obtain an intermediate product, then add 23.4g (0.1mol) of decylphenol, raise the temperature to 120°C for 5h under reflux, and obtain a yellow viscous liquid. Add 10.1g (0.1mol) epichlorohydrin dropwise at 60°C, and react for 6 hours after the dropwise addition to obtain the cold regenerated emulsified asphalt additive. The yield obtained by liquid chromatography is 72.1%.

[0054] Weigh 35g moist EA-501 (Jiangsu Bote New Material Co., Ltd.) and 8g cold recycled emulsified asphalt additive, then water to 350g, add dilute hydrochloric acid (commercially available) to about PH=2.5, and finally add water to 400g to obtain soap.

[0055] Take 600g of SK70# bitumen (Jiangyin Baoli Petrochemical Products Co., Ltd.), heat it to 140°C...

Embodiment 3

[0069] Take 8.78g (0.12mol) of diethylamine and add it to a reactor filled with 50mL of water. After raising the temperature to 30°C, slowly add 12.45g of 37%-40% (0.15mol) formaldehyde solution, react at 30°C for 2 hours, and then cool to 25°C to obtain an intermediate product, then add 26.2g (0.1mol) of dodecylphenol, then raise the temperature to 110°C and reflux for 7 hours to obtain a yellow viscous liquid, and finally add dropwise at 75°C 7.0g (0.12mol) of propylene oxide, reacted for 7 hours after the dropwise addition to obtain the cold regenerated emulsified asphalt additive, and the yield obtained by liquid chromatography was 87.3%.

[0070] Weigh 35g moist EA-501 (Jiangsu Bote New Material Co., Ltd.) and 10g cold recycled emulsified asphalt additive, then water to 350g, drop dilute hydrochloric acid (commercially available) to about PH=2.5. Finally, add water to 400g to obtain soap liquid.

[0071] Take 600g of SK70# bitumen (Jiangyin Baoli Petrochemical Products...

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Abstract

The invention relates to a method for preparing a cold-recycling asphalt emulsification additive. The method comprises the following steps of: (1) adding polyamine to aldehyde solution, and carrying out reaction so as to produce aldimine solution; (2) cooling down, and reacting produced aldimine with alkylphenol so as to produce mannich base solution; and (3) adding an epoxy ethane derivative, and carrying out reaction, thereby obtaining the cold-recycling asphalt emulsification additive. The method has the advantages that the synthesis process is simple, the reaction conditions are mild, the yield is high, and the industrialization is easily realized. The emulsifying property and normal-temperature storage stability of emulsified asphalt prepared through the cold-recycling asphalt emulsification additive are good; and a cold-recycling asphalt mixture prepared from the emulsified asphalt is better in road performance, various strengths are obviously increased, and various other properties all meet the cationic emulsified asphalt standard established by the Ministry of Communications and the technical indicator on mixing performance.

Description

technical field [0001] The invention relates to a cold recycled asphalt, in particular to a preparation method of a cold recycled emulsified asphalt additive. Background technique [0002] The use of old asphalt mixture (RAP) is in line with the requirements of environmental protection, so it is strongly supported by the governments of various countries. In 1980, the United States used 50 million tons of RAP. By 2000, the utilization rate of RAP in the United States had exceeded 80%. Japan also began to use RAP on a large scale in 1976. By 1997, Japan had used 36 million tons of RAP. The European Asphalt Pavement Association (NAPA) announced on its website that 100% of the RAP in its member countries is returned to recycling. Shanghai is an early city in my country to develop RAP utilization. The Shanghai Municipal Engineering Administration issued the document "Shanghai Municipal Regulations on the Recycling and Utilization of Asphalt Mixtures" in 2000. Strongly encour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/17C08K5/3462C08L95/00C07C215/50C07C213/04C07D295/13
Inventor 陈香洪锦祥周伟玲徐静王文峰刘杰
Owner JIANGSU SOBUTE NEW MATERIALS
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