A kind of lignin polyamine quaternary ammonium salt cationic asphalt emulsifier and its preparation method

A quaternary ammonium salt cation, asphalt emulsifier technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of requiring high temperature reaction, high temperature reaction, complicated preparation steps, etc., achieve good storage stability, improve emulsification performance , the effect of increasing hydrophilicity

Inactive Publication Date: 2018-03-20
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the reaction steps are cumbersome and require high temperature reaction
Chinese patent CN101712625A relates to a synthesis method of an amphoteric slow-cracking and fast-setting asphalt emulsifier, which uses oleic acid to react with polyamines to generate amide polyamines, and then adds chloroacetic acid to undergo a halogenation reaction to obtain an asphalt emulsifier. The disadvantage of this method is the preparation high temperature reaction
The disadvantage of this method is that the preparation steps are cumbersome, the cost is high, and high temperature reaction is required
[0005] The general disadvantages of the above cationic asphalt emulsifiers and their preparation methods are: the cost of raw materials for the preparation of emulsifiers is high, the sources are limited, high temperature reactions are required during preparation, and the requirements for production and experimental equipment are relatively high

Method used

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  • A kind of lignin polyamine quaternary ammonium salt cationic asphalt emulsifier and its preparation method
  • A kind of lignin polyamine quaternary ammonium salt cationic asphalt emulsifier and its preparation method
  • A kind of lignin polyamine quaternary ammonium salt cationic asphalt emulsifier and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0048] (1) Preparation of lignin polyamine quaternary ammonium salt cationic asphalt emulsifier:

[0049] 1) Add 189.3g of tetraethylenepentamine into the reactor, then dropwise add 72.1g of acrylic acid, stir and react at 45°C for 1h, and obtain reaction intermediate I.

[0050] 2) In another reactor, add 193.1g of 33% (mass fraction) trimethylamine aqueous solution, gradually add 131.2g of 30% (mass fraction) industrial hydrochloric acid, then gradually add 97.1g of epichlorohydrin, and stir and react at 45°C for 2h to obtain Reaction Intermediate II.

[0051] 3) In another reactor, 283.0 g of lignin was dissolved in 649.6 g of 10.7% (mass fraction) sodium hydroxide aqueous solution, mixed and stirred for reaction to obtain reaction intermediate III.

[0052] 4) Add reaction intermediate I to reaction intermediate III, then gradually add 92.5 g of 37% (mass fraction) formaldehyde, and react at 70°C for 3 hours to obtain reaction intermediate IV;

[0053] 5) Gradually add t...

Embodiment 2

[0065] (1) Preparation of lignin polyamine quaternary ammonium salt cationic asphalt emulsifier:

[0066] 1) Add 189.3g of tetraethylenepentamine into the reactor, then dropwise add 72.1g of acrylic acid, stir and react at 45°C for 1h, and obtain reaction intermediate I.

[0067] 2) Add 109.1g triethylamine to another reactor, gradually add 131.2g 30% (mass fraction) industrial hydrochloric acid, then gradually add 97.1g epichlorohydrin, stir and react at 45°C for 2h to obtain reaction intermediate II.

[0068] 3) In another reactor, 283.0 g of lignin was dissolved in 649.6 g of 10.7% (mass fraction) sodium hydroxide aqueous solution, mixed and stirred for reaction to obtain reaction intermediate III.

[0069] 4) Add reaction intermediate I to reaction intermediate III, then gradually add 92.5 g of 37% (mass fraction) formaldehyde, and react at 60°C for 4 hours to obtain reaction intermediate IV;

[0070] 5) Gradually add the reaction intermediate II to the reaction intermedi...

Embodiment 3

[0081] (1) Preparation of lignin polyamine quaternary ammonium salt cationic asphalt emulsifier:

[0082] 1) Add 189.3g of tetraethylenepentamine into the reactor, then dropwise add 72.1g of acrylic acid, stir and react at 45°C for 1h, and obtain reaction intermediate I.

[0083] 2) In another reactor, add 189.6g 85% (mass fraction) triethanolamine aqueous solution, gradually add 131.2g 30% industrial hydrochloric acid, then gradually add 97.1g epichlorohydrin, stir and react at 45°C for 2h, and obtain the reaction medium Body II.

[0084] 3) In another reactor, 283.0 g of lignin was dissolved in 649.6 g of 10.7% (mass fraction) sodium hydroxide aqueous solution, mixed and stirred for reaction to obtain reaction intermediate III.

[0085] 4) Add the reaction intermediate I to the reaction intermediate III, then gradually add 92.5g of 37% (mass fraction) formaldehyde, react at 80°C for 2 hours, and obtain the reaction intermediate IV;

[0086] 5) Gradually add the reaction in...

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Abstract

The invention discloses a lignin polyamine quaternary ammonium salt cationic asphalt emulsifier and a preparation method and application thereof. A molecular structural general formula of the emulsifier is shown as follows, wherein R refers to methyl(-CH3), ethyl(-C2H5) or ethoxy(-C2H4OH), and LIGNIN represents lignin molecular link. By adding acrylic acid, tetraethylenepentamine, low-carbon-number tertiary amine and epoxy chloropropane into raw materials, molecules of the asphalt emulsifier prepared by the method are of a polyamine quaternary ammonium salt cationic chemical structure, charge strength of the molecules of the asphalt emulsifier is improved, and hydrophilicity of the molecules of the asphalt emulsifier is improved. Therefore, emulsifying performance of the asphalt emulsifier is improved, and using performance emulsified asphalt is improved.

Description

technical field [0001] The invention relates to a lignin polyamine quaternary ammonium salt cationic asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Emulsified asphalt is an oil-in-water liquid asphalt emulsion formed by asphalt and water under the action of an emulsifier. Emulsified asphalt is mainly divided into cationic emulsified asphalt, anionic emulsified asphalt and nonionic emulsified asphalt. Among them, cationic emulsified asphalt is widely used in road construction and road maintenance due to its energy saving and environmental protection, can improve construction conditions and strong adhesion to stone materials, and can effectively reduce excessive aging of asphalt and many other excellent application characteristics. [0003] The most critical factor affecting the road performance of emulsified asphalt is the asphalt emulsifier. At present, the main varieties of cationic asp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08H7/00C08J3/03C08L95/00
CPCC08H6/00C08J3/03C08J2395/00C08L95/00C08L2201/54
Inventor 施来顺李德梅
Owner SHANDONG UNIV
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