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Cationic asphalt emulsifier and preparation method and application thereof

A technology of asphalt emulsifier and cation, which is applied in the field of cationic asphalt emulsifier and its preparation, can solve the problems of poor emulsion stability, difficulty in modifying asphalt, adjustment of formula, etc., and meet the requirements of different construction technologies and construction conditions, Effects with a wide range of selection and applicability

Active Publication Date: 2010-06-23
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the objectives of the present invention is to provide a cationic asphalt emulsifier, which overcomes the poor emulsification effect, difficulty in emulsifying heavy traffic asphalt and polymer modified asphalt, poor emulsion stability, and poor adhesion between emulsified asphalt and stone materials in the prior art. , Insufficient mixing performance, difficulty in flexibly adjusting the formula for different construction conditions and types, and failure to meet the technical requirements of the construction site. The obtained product is uniform, stable, and has good emulsification effect. It has no adverse effects on the properties of asphalt and has wide applicability. It can meet the construction requirements of different types of asphalt and different types of stone materials

Method used

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  • Cationic asphalt emulsifier and preparation method and application thereof
  • Cationic asphalt emulsifier and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Put lauric acid and 4-tert-butylbenzoic acid into the reactor in a molar ratio of 1:1, then add ethylenediamine with a molar ratio of 2:1 to the mixed organic acid, and simultaneously add lauric acid and 4-tert-butyl Mixed acid composed of benzoic acid and ethylenediamine total weight 5% xylene solvent and 1% stannous oxide catalyst, stirred and heated up to 140 ° C, reflux reaction for 9 hours, to obtain the intermediate, remove the solvent therein, and epoxy Chloropropane reacts with the intermediate after removing the solvent at a molar ratio of 0.5:1, controls the reaction temperature at 75±5°C, and reacts for 0.5 hours to prepare the main agent of the cationic asphalt emulsifier, and then compound with 1% of the weight of the main agent Mix OP-10 and 1% aluminum sulfate at 45°C for 1 hour to obtain cationic asphalt emulsifier, which is reserved for emulsification test.

[0030] Prepare the asphalt emulsifier obtained above into a 4% by weight emulsifier aqueous sol...

Embodiment 2

[0032] Using the same method and process conditions as in Example 1, keeping the molar ratio of mixed acid and amine at 1:1, investigate the 4-tert-butylbenzoic acid with relatively large steric hindrance effect and lauric acid with relatively small steric hindrance effect Under different proportioning conditions, the obtained emulsifier prepared asphalt emulsion emulsification and mixing effect with aggregate, the results are as follows:

[0033]

Embodiment 3

[0035] Put oleic acid and syringic acid into the reactor in a molar ratio of 1:1, and then add a mixed amine composed of triethylenetetramine and 1,2-propylenediamine with a molar ratio of 1:1 to the mixed organic acid. The molar ratio of triethylenetetramine and 1,2-propylenediamine is 1:1, and at the same time, add 8% toluene solvent and 3% azobisisobutyronitrile catalyst of the total weight of mixed acid and mixed amine, stir and heat up to 120 ℃, reflux reaction for 10 hours to obtain an intermediate, remove the solvent therein, react the intermediate with the molar ratio of 1:1 between methyl chloride and the removed solvent, control the reaction temperature at 70±5°C, and the reaction time for 2 hours to obtain The main agent of cationic asphalt emulsifier is compounded with 2.5% AEO3 and 2.5% calcium chloride by weight of the main agent, and stirred and blended at 60°C for 1 hour to obtain cationic asphalt emulsifier, which is reserved for emulsification test.

[0036] ...

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Abstract

The invention relates to cationic asphalt emulsifier and preparation method and application thereof. The main agent of the cationic asphalt emulsifier is prepared through the reaction of quaternarization reagent and intermediate at molar ratio of 0.5-3:1, wherein the intermediate is produced in the reaction of organic acid mixture and organic amine at molar ratio of 1: 1-3. The adjuvant agent of the cationic asphalt emulsifier is the combination of, based on the main agent by weight, 0.1-2.5% of nonionic surfactant and 0.1-2.5% of modifier. The organic acid mixture is the mixture of linear, branched or naphthene-containing organic acid with small relative pace steric effect and organic acid with big relative space steric effect at molar ratio of 1: 3- 3: 1. The quaternarization reagent is epichlorohydrin, hydrochloric acid, chloromethane, dimethyl sulfate or chloroacetic acid. The modifier is one or more of aluminum sulfate, ammonium chloride and calcium chloride and the nonionic surfactant is fatty alcohol-polyoxyethylene ether. The emulsifier has no bad effects to the property of the asphalt, has wide application range and can satisfy different construction conditions.

Description

technical field [0001] The invention relates to an asphalt emulsifier and its preparation method and application, more specifically to a cationic asphalt emulsifier and its preparation method and application. Background technique [0002] At present, there are many kinds of cationic asphalt emulsifiers at home and abroad, mainly including the following six types: alkylamines, amides, imidazolines, ethylene oxide diamines, aminated lignin and quaternary ammonium salts. [0003] my country began to develop cationic emulsified asphalt in the late 1970s. At present, the commercialized varieties mainly include: quaternary ammonium salts, lignin amines, amidopolyamines and imidazoline cationic asphalt emulsifiers. Because these emulsifiers only use one organic acid and one amine compound as raw materials, their products have the defects of imperfect chemical structure and incomplete formula design, so that they are only suitable for specific asphalt and specific stone materials. ...

Claims

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Application Information

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IPC IPC(8): B01F17/18C08K5/19C09K23/18
Inventor 李磊马玲白生军蔺习雄彭煜牛春革熊良铨孔祥军
Owner PETROCHINA CO LTD
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