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Preparation method of compound slow-breaking slow-curing positive ion asphalt emulsifier

An asphalt emulsifier, slow-cracking and slow-setting technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of unsatisfactory asphalt emulsion stability, high cost, unsatisfactory demulsification and molding conditions, etc. Enhance water solubility and emulsifying ability, no three wastes discharge, wide adaptability of stone materials

Active Publication Date: 2015-03-04
CHINA PHARM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A single emulsifier cannot well meet the needs of asphalt emulsion production and use during use, for example, the stability of asphalt emulsion is not ideal, the cost is high, the demulsification and molding conditions cannot meet the requirements, etc., so different emulsification It is the research focus of this industry to enhance the emulsifying ability of the emulsifier, reduce the production cost of the asphalt emulsion, and improve the road performance of the asphalt emulsion.

Method used

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  • Preparation method of compound slow-breaking slow-curing positive ion asphalt emulsifier
  • Preparation method of compound slow-breaking slow-curing positive ion asphalt emulsifier
  • Preparation method of compound slow-breaking slow-curing positive ion asphalt emulsifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of emulsifier

[0029] Dissolve 8g of lignin in 35g of water, adjust the pH of the solution to 9 with sodium hydroxide, add 2g of dodecylamine to the system, after the system is heated to 65°C, add 0.4g of paraformaldehyde, react for 1 hour, add Glycidyltrimethylammonium chloride (ETA) 12g, after reacting for 7 hours, add 40g OP-13, continue to react after 1.5 hours, add 1g triethylenetetramine and 0.5g paraformaldehyde, continue to react for 1.5 hours, The slow-cracking and slow-setting cationic asphalt emulsifier of the present invention is obtained by adding 50% methanol solution for dilution.

[0030] Preparation of asphalt emulsion

[0031] Weigh 10g of the above-prepared emulsifier (effective content is 50%), add about 170ml of water, stir gently, after the emulsifier is completely dissolved, adjust the pH of the solution to 2.0 with hydrochloric acid, and set the volume to 200ml to obtain emulsified agent aqueous solution. Turn on the emulsified co...

Embodiment 2

[0035] Preparation of emulsifier

[0036] Dissolve 8g of lignin in 35g of water, adjust the pH value of the solution to 9 with sodium hydroxide, add 4g of octadecylamine to the system, after the system is heated to 75°C, add 0.3g of paraformaldehyde, react for 1 hour, add Epoxypropyltrimethylammonium chloride (ETA) 14g, after reacting for 3 hours, add 25g TX-15, after continuing to react for 1 hour, add 2g tetraethylenepentamine and 0.6g paraformaldehyde, continue reacting for 1 hour, The slow-cracking and slow-setting cationic asphalt emulsifier of the present invention is obtained by adding 50% methanol solution for dilution.

[0037] The preparation of asphalt emulsion is the same as that in Example 1.

[0038] Asphalt Emulsion Performance Test

[0039]

[0040]

Embodiment 3

[0042] Preparation of emulsifier

[0043] Dissolve 8g of lignin in 35g of water, adjust the pH of the solution to 10 with sodium hydroxide, add 2g of hexadecylamine to the system, after the system is heated to 65°C, add 0.3g of paraformaldehyde, react for 1.5 hours, add Glycidyltrimethylammonium chloride (ETA) 10g, after reacting for 4 hours, add 20g TX-15 and 20g AC-1815, after continuing the reaction for 1.5 hours, add 1g diethylenetriamine and 0.5g paraformaldehyde, Continue to react for 1.5 hours, add 50% methanol solution to dilute to obtain the slow-cracking and slow-setting cationic asphalt emulsifier of the present invention.

[0044] The preparation of asphalt emulsion is the same as that in Example 1.

[0045] Asphalt Emulsion Performance Test

[0046]

[0047]

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Abstract

The invention relates to the field of organic fine chemicals, in particular to a preparation method of a compound slow-breaking slow-curing positive ion asphalt emulsifier. The preparation method is characterized by comprising the following steps: dissolving lignin in a sodium hydroxide solution, and adding aliphatic amine; heating the sodium hydroxide solution and then adding formaldehyde for reaction; adding glycidyl trimethyl ammonium chloride for reaction; adding a polyoxyethylene ether nonionic surfactant for reaction; adding formaldehyde and polyethylene polyamine to continue reaction, and then adding a diluent for dilution to obtain the emulsifier. When the emulsifier prepared by the method is used for preparing an asphalt emulsion, the usage amount of the emulsifier is small, and the emulsifier is applicable to various stone and can be widely applied to the prime coat oil, the slurry seal and the like of an asphalt road.

Description

technical field [0001] The invention relates to the field of organic fine chemicals, in particular to a preparation method of a composite slow-cracking slow-setting cationic asphalt emulsifier. Background technique [0002] With the development of road traffic, asphalt is widely used in road construction. But asphalt is a semi-solid viscous substance at room temperature, with high viscosity and poor fluidity. It can only be used by converting it into a liquid state by heating, which causes a lot of inconvenience to construction. Asphalt emulsion is a Under the action of mechanical stirring or shearing, in the presence of asphalt emulsifier, a kind of hot-melt asphalt is formed, and the asphalt emulsion is stably dispersed in water with fine particles. This asphalt emulsion is liquid at room temperature and is easy to use. . [0003] Asphalt emulsion is essentially a highly dispersed multiphase system, which is thermodynamically unstable. The asphalt emulsifier structure c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L95/00C08H7/00
Inventor 孟卫刘晓李文平胡芳崔圣阳王晔苏徐宏鑫
Owner CHINA PHARM UNIV
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