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Multi-positive-ion amide-type asphalt emulsifier and preparation method thereof

An asphalt emulsifier and polycation technology, which is applied in the field of polycationic amide type asphalt emulsifier and its preparation, can solve the problems of high temperature reaction, source limitation, and high requirements for production experimental equipment, and achieves improved emulsification performance, enhanced charge strength, and improved Compatibility effect

Inactive Publication Date: 2016-03-16
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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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  • Multi-positive-ion amide-type asphalt emulsifier and preparation method thereof
  • Multi-positive-ion amide-type asphalt emulsifier and preparation method thereof
  • Multi-positive-ion amide-type asphalt emulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of polycationic amide type asphalt emulsifier:

[0033] 1) Add 326.0g of N-hydrogenated tallow-1,3-propylenediamine and 330g of isopropanol into the reactor, heat and stir to dissolve. Then 216.8 g of acrylamide was added dropwise, and the reaction was stirred at 70° C. for 3 h.

[0034] The above synthetic intermediate product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3440cm -1 and 3369cm -1 O-H stretching vibration absorption peak at 3190cm -1 The N-H stretching vibration absorption peak at 2916cm -1 and 2850cm -1 The asymmetric and symmetric stretching vibration absorption peaks of methylene respectively, 1669cm -1 It is the amide group C=O stretching vibration absorption peak, 1471cm -1 For the asymmetric bending vibration of methylene, 1409cm -1 Asymmetric bending vibration of the methyl group at 1261cm -1 and 1076cm -1 C-N stretching vibration absorption peak, 719cm-1 It is the i...

Embodiment 2

[0045] (1) Preparation of polycationic amide type asphalt emulsifier:

[0046] 1) Add 326.0g of N-hydrogenated tallow-1,3-propylenediamine and 330g of isopropanol into the reactor, heat and stir to dissolve. Then 216.8 g of acrylamide was added dropwise, and the reaction was stirred at 70° C. for 3 h.

[0047] 2) Add 210.1 g of triethylamine to the reactor, gradually add 252.7 g of 30% industrial hydrochloric acid, then gradually add 189.5 g of epichlorohydrin, stir and react at 30-70° C. for 2 hours, and obtain reaction intermediate B. The prepared reaction intermediate B was added dropwise to the synthesis product in step 1) above, and stirred at 65° C. for 3 h. The obtained polycationic amide type asphalt emulsifier was reserved for the emulsified asphalt test.

[0048] The synthesized product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3330cm -1 The stretching vibration absorption peak of O-H is at 3174cm -1 Th...

Embodiment 3

[0056] (1) Preparation of polycationic amide type asphalt emulsifier:

[0057] 1) Add 326.0g of N-hydrogenated tallow-1,3-propylenediamine and 330g of isopropanol into the reactor, heat and stir to dissolve. Then 216.8g of acrylamide was added dropwise, and stirred at 65°C for 4h.

[0058] 2) Add 365.1g of 85% triethanolamine to the reactor, gradually add 252.7g of 30% industrial hydrochloric acid, then gradually add 189.5g of epichlorohydrin, stir and react at 30-70°C for 2h, and obtain reaction intermediate C. The prepared reaction intermediate C was added dropwise to the synthesis product in step 1) above, and stirred at 70° C. for 2 h. The obtained polycationic amide type asphalt emulsifier was reserved for the emulsified asphalt test.

[0059] The synthesized product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3315cm -1 The stretching vibration absorption peak of O-H is at 3194cm -1 The N-H stretching vibratio...

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Abstract

The present invention discloses a multi-positive-ion amide-type asphalt emulsifier and a preparation method thereof, and the asphalt emulsifier is prepared from raw materials of N-hydrogenated tallow-1,3-propylene diamine, an alcohol solvent, acrylamide, a low-carbon tertiary amine, industrial hydrochloride and epichlorohydrin in the molar ratio of N-hydrogenated tallow-1,3-propylene diamine to alcohol solvent to acrylamide to low-carbon tertiary amine to industrial hydrochloride to epichlorohydrin of 1mol: (5.00-11.00) mol: (3.00-3.10) mol: (2.02-2.10) mol: (2.02-2.10) mol: (2.02-2.08) mol. The alcohol solvent is ethanol, methanol or isopropanol. The low-carbon tertiary amine is a trimethylamine aqueous solution, triethylamine or triethanolamine. The asphalt emulsifier synthetic raw materials are readily available, production cost is low, a process is simple, and a high temperature reaction is not required. The asphalt emulsifier can emulsify a variety of different types of asphalt, the prepared emulsified asphalt is fine, uniform, and good in storage stability, and positive-ion-type emulsified asphalt can be prepared.

Description

technical field [0001] The invention relates to a polycation amide type asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Emulsified asphalt, especially cationic emulsified asphalt, is widely used in road construction and pavement maintenance because of its energy-saving and environmental protection, can improve construction conditions, 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 asphalt emulsifiers at home and abroad include organic amines, quaternary ammonium salts, imidazolines, amides, etc., among which quaternary ammonium salt emulsifiers are The most widely used. With the application of cationic emulsified asphalt, the varieties of asphalt emulsifiers are gradually en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C237/06C07C231/12C08J3/03C08L95/00C04B24/12
CPCC04B24/124C04B26/26C04B2103/404C04B2111/0075C07C231/12C07C237/06C07D301/00C07D303/36C08J3/03C08J2395/00C08L95/00
Inventor 施来顺陈孟
Owner SHANDONG UNIV
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