Cationic asphalt emulsifier, preparation method thereof and asphalt emulsifying method

An asphalt emulsifier, emulsified asphalt technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of high price, insufficient emulsifying ability, inability to emulsify SBS modified asphalt, etc., and achieves simple and convenient use and stable emulsifying effect. , Good road performance

Inactive Publication Date: 2018-11-16
天津三五六七电子商务有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

SBR modified emulsified asphalt has the following disadvantages: SBR latex mainly improves the low temperature performance of asphalt, but does not significantly improve the high temperature performance of asphalt; the compatibility between SBR latex and emulsifier is poor, and the road performance is not good
At present, cationic emulsifiers are mainly quaternary ammonium salt surfactants and their compound products with nonionic surfactants. There are few varieties and high prices. Moreover, dioxane will be generated during the production of nonionic surfactants, which is harmful to the environment. cause harm to the human body
At the same time, the emulsified asphalt produced by this kind of emulsifier has poor storage stability, poor adhesion to stone materials, and cannot emulsify SBS modified asphalt, and the emulsifying ability is insufficient, which directly affects the road performance of emulsified asphalt

Method used

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  • Cationic asphalt emulsifier, preparation method thereof and asphalt emulsifying method

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preparation example Construction

[0026] The invention relates to a cationic asphalt emulsifier, a preparation method of the emulsifier and a method for emulsifying asphalt. The cationic emulsified asphalt emulsified by this emulsifier can be applied to new high-grade asphalt pavement, and can also be used for preventive maintenance of asphalt pavement or cement pavement, maintenance and paving of cold recycled mixture pavement. When used for new asphalt pavement, it is mainly used as the seal layer of the road surface. When used for preventive maintenance and maintenance, it is mainly used for gravel seal layer and slurry seal layer. It can also be used as cold-mix recycled mixture of asphalt pavement recycled materials. The paving of the road.

[0027] The cationic asphalt emulsifier involved in the present invention includes active components, alcohol solvent and inorganic acid, wherein the content of small molecule alcohol solvent is 2-10%, and the content of inorganic acid is 10-50%. Its active component...

Embodiment 1

[0046] Preparation of cationic asphalt emulsifier: 15 grams of C16 fatty acid amide (brand: Beijing Yamei T21), 5 grams of 18 alkyl bis-quaternary ammonium salt (brand: Beijing Yamei AM 77MB), 40 grams of dodecyl dimethyl betaine ( Brand: BS 12), 5 grams of diethylene glycol and 35 grams of phosphoric acid were put into a beaker in sequence, stirred at 80°C for 1 hour, and mixed evenly to obtain a cationic emulsifier.

[0047] Preparation of modified asphalt: Heat Liaohe 90# base asphalt to 160°C, add 3.5% SBS, keep stirring for 60 minutes, and then use colloid mill to grind for 30-90 minutes to make SBS modified asphalt. Keep the SBS modified asphalt at 165~170℃ for later use.

[0048] Preparation of soap liquid: Weigh 10 g of the cationic emulsifier and add it to 490 g of hot water to obtain soap liquid. Keep the temperature of the soap solution at 55-60°C.

[0049] Turn on the colloid mill, add 500g of SBS modified asphalt with a temperature of 165°C and the above soap so...

Embodiment 2

[0051] Preparation of cationic asphalt emulsifier: 18 grams of C18 fatty acid amide (brand: Beijing Yamei T22), 8 grams of 18 alkyl trimethyl ammonium chloride (brand: 1831), 34 grams of cocamidopropyl betaine (brand: CAB 35), 5 grams of diethylene glycol and 35 grams of hydrochloric acid were put into a beaker in sequence, stirred at 80°C for 1 hour, and mixed evenly to obtain a cationic emulsifier.

[0052] Preparation of modified asphalt: heat Liaohe 90# base asphalt to 160°C, add 3.5% SBS, keep stirring for 60 minutes, and then use colloid mill to grind for 30-90 minutes to make SBS modified asphalt. Keep the SBS modified asphalt at 165~170℃ for later use.

[0053] Preparation of soap liquid: Weigh 10 g of the cationic emulsifier and add it to 490 g of hot water to obtain soap liquid. Keep the temperature of the soap solution at 55-60°C.

[0054] Turn on the colloid mill, add 500g of SBS modified asphalt with a temperature of 165°C and the above soap solution into the co...

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Abstract

The invention discloses a cationic asphalt emulsifier, a preparation method thereof and an asphalt emulsifying method. The emulsifier comprises active components, an alcohol solvent and an inorganic acid, wherein the content of the small-molecular alcohol solvent is 2%-10%, the content of the inorganic acid is 10%-50%; the active components at least comprise a first active component, a second active component and a third active component; the first active component is a C12-C22 fatty amide surfactant with content of 5%-25%; the second active component is a C12-C22 fatty acid quaternary ammonium salt surfactant with content of 2%-15%; the third active component is a zwitterionic surfactant with content of 5%-40%. Liquid soap is prepared from the emulsifier and hot water by mixing, to-be-emulsified asphalt is heated to a proper temperature, then the to-be-emulsified asphalt and the liquid soap are added to a colloid mill and sheared, and emulsified asphalt is obtained. Both matrix asphalt and SBS modified asphalt can be emulsified, the emulsification effect is stable, and the emulsified asphalt has good pavement performance.

Description

technical field [0001] The invention relates to a cationic asphalt emulsifier, a preparation method thereof and a method for emulsifying asphalt, belonging to the technical field of asphalt modification. Background technique [0002] Emulsified asphalt, especially cationic emulsified asphalt, has many excellent application characteristics such as energy saving and environmental protection, can improve construction conditions, and can effectively reduce excessive aging of asphalt, and has been widely promoted and applied in road construction and maintenance. Moreover, as road engineering requires higher and higher requirements for asphalt binders, modified emulsified asphalt is used in more cases. At present, most of the modified emulsified asphalt is produced by adding SBR (styrene-butadiene rubber) latex. SBR modified emulsified asphalt has the following disadvantages: SBR latex mainly improves the low temperature performance of asphalt, but does not significantly improve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L95/00C08L53/02
CPCC08J3/03C08J2395/00C08J2453/02
Inventor 崔尚超
Owner 天津三五六七电子商务有限公司
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