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

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

Active Publication Date: 2012-10-10
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 dif

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 250mL three-necked flask, add 0.06mol of diethylenetriamine, and add dropwise 5.6mL of formaldehyde solution with a mass fraction of 37-40% under stirring, control the reaction temperature to room temperature, and react 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 distill under reduced pressure, the vacuum degree is 0.09 MPa, and react in vacuum for 0.5 hours to obtain deep red intermediate.

[0024] Add 0.06mol of stearic acid and 10ml of xylene to the above-mentioned intermediate, raise the temperature to 160°C under the condition of nitrogen gas, react for 5 hours, lower the temperature to 80°C, vacuumize and distill under reduced pressure, the vacuum degree is 0.09 MPa, that is, a dark brown polyamine asphalt emulsifier.

[0025] 2. Preparation of emulsified asphalt:

[0026] Ta...

Embodiment 2

[0030] 1. Preparation of cationic asphalt emulsifier:

[0031] According to the method in Example 1, 0.06 mol of diethylene triamine was replaced by 0.12 mol of triethylene tetramine for reaction to obtain a dark brown polyamine asphalt emulsifier.

[0032] 2. Preparation of emulsified asphalt:

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

[0034] Weigh 120g of Binzhou 90# asphalt, heat it to 120~130°C, slowly pour it into the emulsifier aqueous solution stirred in the homogeneous disperser, and stir it thoroughly for 1min to obtain a uniform asphalt emulsion.

[0035] The performance test data shows that the emulsified asphalt is cationic and can be stored stably for more than 5 days. The residue on the sieve is 0.03%, and the evaporation residue is 65.9%. It is slow-cracking when mixed with type I graded lim...

Embodiment 3

[0037] 1. Preparation of cationic asphalt emulsifier:

[0038] According to the method in Example 1, 0.06 mol of diethylenetriamine was replaced by 0.18 mol of tetraethylenepentamine for reaction to obtain a dark brown polyamine asphalt emulsifier.

[0039] 2. Preparation of emulsified asphalt:

[0040] Take 2.4g of the asphalt emulsifier obtained above, add 80ml of water to prepare an emulsifier aqueous 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°C, slowly pour it into the emulsifier aqueous solution stirred in the homogeneous disperser, and stir it thoroughly for 1min to obtain a uniform asphalt emulsion.

[0042] The performance test data shows that the emulsified asphalt is cationic, can be stored stably for more than 5 days, the residual amount on the sieve is 0.04%, and the evaporation residual amount is 62.0%. The time is 90 minutes, and the product...

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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 and its preparation method and application, 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 emulsifiers is relatively mature at present, and the quality of the obtained products is relatively stable, but most of the emulsified asphalt produced by this series of products is of the split type, which is suitable for sticky layer spraying or surface construction. The lignoamine-based asphalt emulsifier belongs to the slow-cracking type, but its product quality is not stable due to the different sources of raw materials, and the prepared emulsified asphalt has uneven particles and poor film-forming properties. ...

Claims

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Application Information

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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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