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Lignin polyamine cation type asphalt emulsifier as well as preparation method and application thereof

An asphalt emulsifier, cationic technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of high requirements for production and experimental equipment, high cost of emulsifier raw materials, cumbersome preparation steps, etc., to achieve low production costs and increase Emulsifying performance, the effect of simple process

Inactive Publication Date: 2016-10-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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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  • Lignin polyamine cation type asphalt emulsifier as well as preparation method and application thereof
  • Lignin polyamine cation type asphalt emulsifier as well as preparation method and application thereof
  • Lignin polyamine cation type asphalt emulsifier as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0049] 1) Add 146.2 g of triethylenetetramine into the reactor, then dropwise add 72.1 g of acrylic acid, stir and react at 45° C. for 1 h, and obtain reaction intermediate I.

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

Embodiment 2

[0064] (1) Preparation of lignin polyamine cationic asphalt emulsifier:

[0065] 1) Add 146.2 g of triethylenetetramine into the reactor, then dropwise add 72.1 g of acrylic acid, stir and react at 45° C. for 1 h, and obtain reaction intermediate I.

[0066] 2) Add 109.1 g of triethylamine to another reactor, gradually add 131.2 g of 30% industrial hydrochloric acid, then gradually add 97.1 g of epichlorohydrin, stir and react at 45° C. for 2 h to obtain reaction intermediate II.

[0067] 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.

[0068] 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;

[0069] 5) Gradually add the reaction intermediate II to the reaction intermediate IV, and react at 80...

Embodiment 3

[0079] (1) Preparation of lignin polyamine cationic asphalt emulsifier:

[0080] 1) Add 146.2g of triethylenetetramine into the reactor, then dropwise add 72.1g of acrylic acid, stir and react at 45°C for 1h, and obtain reaction intermediate I;

[0081] 2) Add 189.6g 85% (mass fraction) triethanolamine aqueous solution to another reactor, 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;

[0082] 3) In another reactor, 283.0g lignin was dissolved in 649.6g 10.7% (mass fraction) sodium hydroxide aqueous solution, mixed and stirred for reaction to obtain reaction intermediate III;

[0083] 4) Add reaction intermediate I to reaction intermediate III, then gradually add 92.5 g of 37% (mass fraction) formaldehyde, and react at 80°C for 2 hours to obtain reaction intermediate IV;

[0084] 5) Gradually add the reaction intermediate II to the reaction intermediate IV, ...

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Abstract

The invention discloses a lignin polyamine cation type asphalt emulsifier as well as a preparation method and an application thereof. The asphalt emulsifier has the molecular structural general formula shown in the specification, wherein R refers to methyl (-CH3), ethyl (-C2H5) or an ethoxy group (-C2H4OH); LIGNIN refers to a lignin molecular chain. Acrylic acid, triethylene tetramine, low-carbon-number tertiary amine and epoxy chloropropane are added to raw materials, so that a prepared asphalt emulsifier molecule adopts the polyamine cation type chemical structure, the charge strength of the asphalt emulsifier molecule is enhanced, and the hydrophilia of the asphalt emulsifier molecule is improved.

Description

technical field [0001] The invention specifically relates to a lignin polyamine cationic asphalt emulsifier and its preparation method and application, belonging to the technical field of fine chemicals. Background technique [0002] Emulsified asphalt means that asphalt and water form an oil-in-water liquid asphalt emulsion 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, has strong adhesion to stone materials, and can effectively reduce over-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 asphal...

Claims

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Application Information

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IPC IPC(8): C08H7/00C08L95/00C08J3/03
CPCC08H6/00C08J3/03C08J2395/00C08L95/00
Inventor 施来顺马存飞李德梅秦阳董倩郭曼
Owner SHANDONG UNIV
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