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Compound Asphalt Emulsifier Containing Gemini Surfactant

A technology of surfactant and asphalt emulsifier, which is applied in building components, building insulation materials, construction, etc., can solve the problems of large amount of surfactant, too much emulsifier, and increased production cost of asphalt emulsion. Good, overcoming the effect of large dosage

Inactive Publication Date: 2015-10-28
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The properties of asphalt emulsion affect the use effect of subsequent construction. The asphalt emulsion prepared at this stage has reached the corresponding construction requirements, but there are still some problems, such as the amount of surfactant is too large
In Chinese patent CN 101643584A, the dosage of cationic imidazoline and polyoxyethylene sorbitan trioleate compound emulsifier used by Hu Shuguang and others is about 10% of the total asphalt emulsion weight ratio. In Chinese patent CN 1746242A, Zhao Xin A compound emulsifier of octadecyltrimethylammonium chloride and ethylene oxide mixture was used in a petroleum asphalt emulsion paint prepared by Equal. The usage of this emulsifier is between 1.5% and 2.5%. An emulsified asphalt prepared by Zhang Hongwu in Chinese patent CN 101153118A uses a compound of ionic surfactant and nonionic surfactant, and their usage amounts are 1-15% and 2.5-19% of the total mass ratio respectively , the large amount of emulsifier used will inevitably increase the production cost of preparing asphalt emulsion
Gemini surfactants not only have the properties and characteristics of traditional surfactants but also have many new and excellent features, but there are few reports on the application of gemini surfactants to asphalt emulsions

Method used

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  • Compound Asphalt Emulsifier Containing Gemini Surfactant
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  • Compound Asphalt Emulsifier Containing Gemini Surfactant

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Weigh 35.6g of asphalt, and keep the temperature in an oven at 150±0.5°C for 60 minutes; weigh 0.0300 of octadecyltrimethylammonium chloride, 0.0182g, add 14ml of deionized water to dissolve, after the emulsion is completely dissolved, put it in a water bath at 65°C for 20 minutes; weigh 0.696g of NaCl, add 8ml of deionized water to dissolve, put it in a water bath at 65°C Keep the temperature constant for 20 minutes; after the asphalt and emulsion are kept at constant temperature, disperse on a high-shear dispersing emulsifier at a speed of 16,000 rpm for 5 minutes, and finally add the NaCl solution to the asphalt emulsion, which is the final asphalt emulsion.

Embodiment 2

[0030] Weigh 32g of asphalt and keep the temperature in an oven at 150±0.5°C for 60 minutes; weigh 0.0422g of octadecyltrimethylammonium chloride, ethane-1,2-dioctadecyldimethylammonium chloride 0.0268g, add 14ml of deionized water to dissolve, after the emulsion is completely dissolved, put it in a water bath at 65°C for 20 minutes; weigh 0.696g of NaCl, add 8ml of deionized water to dissolve, put it in a water bath at 65°C Keep the temperature constant for 20 minutes; after the asphalt and emulsion are kept at constant temperature, disperse on a high-shear dispersing emulsifier at a speed of 16,000 rpm for 5 minutes, and finally add the NaCl solution to the asphalt emulsion, which is the final asphalt emulsion.

Embodiment 3

[0032]Weigh 35g of asphalt, and keep the temperature in an oven at 150±0.5°C for 60 minutes; weigh 0.0420g of octadecyltrimethylammonium chloride, ethane-1,2-dioctadecyldimethylammonium chloride 0.0428g, add 14ml of deionized water to dissolve, after the emulsion is completely dissolved, put it in a water bath at 65°C for 20 minutes; weigh 0.5568g of NaCl, add 8ml of deionized water to dissolve, put it in a water bath at 65°C Keep the temperature constant for 20 minutes; after the asphalt and emulsion are kept at constant temperature, disperse on a high-shear dispersing emulsifier at a speed of 16,000 rpm for 5 minutes, and finally add the NaCl solution to the asphalt emulsion, which is the final asphalt emulsion.

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Abstract

The invention discloses a compound asphalt emulsifier which is composed of cationic quaternary ammonium salt single-chain surfactant and gemini surfactant, wherein the mass ratio of the cationic quaternary ammonium salt single-chain surfactant to the gemini surfactant is (1-2):1. By using the compound emulsifier to prepare an asphalt emulsion, the consumption of the emulsifier is obviously reduced; the defect that surfactant is consumed too much for most of asphalt emulsions prepared at present is overcome; and the prepared asphalt emulsion has favorable property and meets the detection standard of a JTJ052-2000 test method.

Description

technical field [0001] The invention relates to the technical field of asphalt emulsification, in particular to a compound asphalt emulsifier containing gemini surfactants. Background technique [0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is liquid, semi-solid or solid. It is a waterproof, moisture-proof and anti-corrosion organic gelling material. Widely used in coatings, plastics, rubber and other industries as well as road paving. Since most bitumen is solid at room temperature, it was initially converted into a liquid state by heating. However, with the increase in the use of asphalt, people are more and more aware of the inconvenience of asphalt heating construction, as well as the problems of environmental pollution, energy consumption, and unsafe production during the heating process, and began to explore the normal temperature construction method of asphalt. As a resu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08J3/03C04B26/26
Inventor 王小永杨乾乾舒萍洪锦祥冉千平
Owner EAST CHINA UNIV OF SCI & TECH
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