Polyamine slow-breaking quick-setting asphalt emulsifier and preparation method and application thereof

An asphalt emulsifier, slow-cracking and fast-setting technology, which is applied in the preparation of carboxylic acid amide, chemical instruments and methods, and the preparation of organic compounds, etc. It can solve poor film-forming properties, uneven emulsified asphalt particles, and unstable product quality. problem, to achieve the effect of meeting the technical requirements

Active Publication Date: 2014-03-26
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lignoamine-based asphalt emulsifier belongs to the slow-cracking type, but its product quality is not stable due to different sources of raw materials, and the prepared emulsified asphalt has uneven particles and poor film-forming properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Preparation of polyamine slow-cracking and fast-setting asphalt emulsifier:

[0023] In a 250 mL three-necked flask, 0.06 mol of diethylenetriamine was added, and under stirring, 5.6 mL of formaldehyde solution with a mass fraction of 37-40% was added dropwise, and the reaction temperature was controlled to be room temperature for 1.5 hours. Then heat up to 110 ° C, react for 2 hours, continue to heat up to 160 ° C, react for 3 hours, cool down to 105 ° C, vacuumize and carry out reduced pressure distillation, the vacuum degree is 0.09 MPa, and the vacuum reaction is performed for 0.5 hours to obtain a dark red Intermediate.

[0024] In the above-mentioned intermediate, add the stearic acid of 0.06mol, 10ml xylene, be warming up to 160 DEG C under the situation of logical nitrogen, after 5 hours of reaction, be cooled to 80 DEG C, vacuumize and carry out underpressure distillation, vacuum degree is 0.09 MPa, that is, a dark brown polyamine asphalt emulsifier.

[00...

Embodiment 2

[0030] 1. Preparation of cationic asphalt emulsifier:

[0031] According to the method in Example 1, 0.06 mol of diethylenetriamine was replaced with 0.12 mol of triethylenetetramine, and the reaction was carried out to obtain a dark brown polyamine-based asphalt emulsifier.

[0032] Second, the preparation of emulsified asphalt:

[0033] Take 2.0 g of the asphalt emulsifier obtained above, add 80 ml of water to prepare an aqueous emulsifier solution, adjust the pH value to 5 with hydrochloric acid, heat and maintain the temperature at 60-70 °C.

[0034] Weigh 120g of Binzhou 90# asphalt, heat it to 120~130℃, slowly pour it into the emulsifier aqueous solution stirred in a homogenizer, and stir it for 1 minute to obtain a uniform asphalt emulsion.

[0035] The performance test data are: emulsified asphalt is cationic type, can be stored stably for more than 5 days, the residual amount on the screen is 0.03%, and the evaporation residual amount is 65.9%. It is slow-cracked whe...

Embodiment 3

[0037] 1. Preparation of cationic asphalt emulsifier:

[0038] According to the method in Example 1, 0.06 mol of diethylene triamine was replaced with 0.18 mol of tetraethylene pentamine, and the reaction was carried out to obtain a dark brown polyamine asphalt emulsifier.

[0039] Second, the preparation of emulsified asphalt:

[0040] Take 2.4 g of the asphalt emulsifier obtained above, add 80 ml of water to prepare an aqueous emulsifier solution, adjust the pH value to 7 with hydrochloric acid, heat, and keep the temperature at 60-70 °C.

[0041] Weigh 120g of Binzhou 90# asphalt, heat it to 120~130℃, slowly pour it into the emulsifier aqueous solution stirred in a homogenizer, and stir it thoroughly for 1min to obtain a uniform asphalt emulsion.

[0042] The performance test data are: emulsified asphalt is cationic, can be stored stably for more than 5 days, the residual amount on the screen is 0.04%, and the evaporation residual amount is 62.0%. It is slow-cracked when m...

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PUM

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Abstract

The invention relates to a polyamine slow-breaking quick-setting asphalt emulsifier and a preparation method and an application thereof. The emulsifier is made through the method as follows: dripping formaldehyde into polyethylene polyamine, and the proportion (mole ratio) of the polyethylene polyamine to the formaldehyde is 1:(0.25 to 4); allowing reacting for 0.5 to 2 hours at room temperature, and then heating to 110 DEG C; allowing reacting for two hours, and heating to 160 to 200 DEG C; allowing reacting for 1 to 3.5 hours, and then cooling to 100 to 110 DEG C, so as to obtain an intermediate after decompressing and dehydrating; adding organic acid by the proportion (mole ratio) of the polyethylene polyamine to the organic acid of (0.5 to 4):1, using dimethylbenzene as a water-carrying agent, and heating the system to 160 to 200 DEG. C; after reaction for 5 hours, cooling to 70 to 80 DEG C, and carrying out reduced pressure distillation, so as to obtain the polyamine slow-breaking quick-setting asphalt emulsifier. Emulsified asphalt prepared through the emulsifier obtained by the invention is uniform and stable, and is proven to be a slow-breaking type through a demulsification test and to be a quick-setting type through an experiment of mixation with quartz sand. The emulsifier can satisfy the requirement of rapid traffic opening.

Description

technical field [0001] The invention relates to an asphalt emulsifier, a preparation method and application thereof, in particular to a polyamine slow-cracking and fast-setting asphalt emulsifier and its preparation method and application. technical background [0002] At present, there are mainly three kinds of asphalt emulsifiers commonly used in China: quaternary ammonium salts, lignin amines and amidopolyamines. The technology of quaternary ammonium salt asphalt emulsifier is relatively mature at present, and the quality of the obtained product is relatively stable, but the emulsified asphalt produced by this series of products is mostly of medium crack type, which is suitable for sticky layer spraying or surface construction. The lignin amine asphalt emulsifier belongs to the slow cracking type, but its product quality is not stable due to different raw material sources. The prepared emulsified asphalt has uneven particles and poor film-forming properties. Amide-based ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08J3/03C07C231/02C07C233/36C07C233/38C07C233/39C04B26/26
Inventor 王月欣刘双旺张倩孟清张彤
Owner HEBEI UNIV OF TECH
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