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A kind of lignin polyamine cationic fast cracking asphalt emulsifier and its preparation method

A kind of asphalt emulsifier and lignin technology, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of high production and experimental equipment requirements, high cost of emulsifier raw materials, cumbersome preparation steps, etc., and achieve low production costs and high efficiency. Emulsifying performance, the effect of simple process

Inactive Publication Date: 2018-03-20
SHANDONG UNIV
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  • 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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  • A kind of lignin polyamine cationic fast cracking asphalt emulsifier and its preparation method
  • A kind of lignin polyamine cationic fast cracking asphalt emulsifier and its preparation method
  • A kind of lignin polyamine cationic fast cracking asphalt emulsifier and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

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

[0049] 1) Add 103.2g of diethylenetriamine 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 the reaction int...

Embodiment 2

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

[0065] 1) Add 103.2g of diethylenetriamine into the reactor, then dropwise add 72.1g of acrylic acid, stir and react at 45°C for 1h, and obtain reaction intermediate I.

[0066] 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.

[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 rea...

Embodiment 3

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

[0080] 1) Add 103.2g of diethylenetriamine 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) In another reactor, add 189.6g 85% (mass fraction) triethanolamine aqueous solution, gradually add 131.2g 30% (mass fraction) industrial hydrochloric acid, then gradually add 97.1g epichlorohydrin, stir and react at 45°C for 2h, Reaction intermediate II is obtained.

[0082] 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.

[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 I...

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Abstract

The invention discloses a lignin polyamine cation rapid-cracking type asphalt emulsifier and a preparation method thereof. The molecular structure of the emulsifier is as shown in the specification. In the formula, R is methyl (-CH3), ethyl (-C2H5) or ethoxyl (-C2H4OH); LIGNIN represents a lignin molecular chain. The lignin polyamine cation rapid-cracking type asphalt emulsifier is prepared from the following raw materials in parts by weight: lignin, water, sodium hydroxide, diethylenetriamine, crylic acid, formaldehyde (37%), low-carbon-number tertiary amine and industrial hydrochloric acid in a ratio of 100:(159-230):(19-27):(32-40):(23-29):(30-36):(35-82):(42-50):(31-37). The lignin polyamine cation rapid-cracking type asphalt emulsifier disclosed by the invention is high in synthesis raw material availability, low in production cost, simple in process and free of high-temperature reaction. Multiple types of asphalt of different models can be emulsified, the prepared emulsified asphalt is fine and uniform, the storage stability is good, and the rapid-cracking type cation emulsified asphalt can be prepared.

Description

technical field [0001] The invention relates to a lignin polyamine cationic fast-cracking 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, 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 asphalt emulsifier...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08H7/00C08J3/03C08L95/00
CPCC08H6/00C08J3/03C08J2395/00C08L95/00
Inventor 施来顺王天曜李德梅陈孟马存飞
Owner SHANDONG UNIV
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