A cationic modified asphalt emulsifier, its preparation method and application

A technology of modified asphalt and cation, which is applied in the cross field of road industry and applied chemistry, can solve the problems that emulsifiers are difficult to emulsify modified asphalt, high temperature reaction is required for preparation, and raw material source is unstable, etc. Easy to obtain and improve storage stability

Active Publication Date: 2020-05-26
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned quaternary ammonium salt type cationic asphalt emulsifier has the following problems: the synthesis steps are cumbersome, and high temperature reaction is required for preparation; the source of raw materials is unstable; the prepared emulsifier is difficult to emulsify modified asphalt, etc.

Method used

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  • A cationic modified asphalt emulsifier, its preparation method and application
  • A cationic modified asphalt emulsifier, its preparation method and application
  • A cationic modified asphalt emulsifier, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of cationic modified asphalt emulsifier

[0036] Add 27.0 g of octadecylamine (0.10 mol) to 27.6 g of ethanol (0.60 mol) to dissolve, then add 84.5 g of acrylamidopropyltrimethylammonium chloride monomer (0.205 mol), and stir and react at 60°C for 6 hours , the cationic modified asphalt emulsifier can be prepared, which is reserved for the emulsified asphalt test.

[0037] The reaction equation is as follows:

[0038]

[0039] Wherein, in the process of preparing soap liquid, the above-mentioned emulsifier tertiary amine group will be protonated to a certain extent under acidic environment, further enhancing its water solubility.

[0040] (2) Preparation of cationic modified emulsified asphalt

[0041] Take 7.5g of the cationic modified asphalt emulsifier of this example, add it to an appropriate amount of water, adjust the pH to 2-3 with hydrochloric acid, and prepare 250g of soap liquid; heat the soap liquid to 60°C and add it to a colloid mill, a...

Embodiment 2

[0047] (1) Preparation of cationic modified asphalt emulsifier

[0048] Add 27.0g of octadecylamine (0.10mol) to 23.0g of ethanol (0.50mol) to dissolve, then add 92.6g of methacrylamidopropyltrimethylammonium chloride monomer (0.210mol), and stir the reaction at 50°C After 8 hours, the cationic modified asphalt emulsifier can be prepared, which is reserved for the emulsified asphalt test.

[0049] The reaction equation is as follows:

[0050]

[0051] Wherein, in the process of preparing soap liquid, the above-mentioned emulsifier tertiary amine group will be protonated to a certain extent under acidic environment, further enhancing its water solubility.

[0052] (2) Preparation of cationic modified emulsified asphalt

[0053] Take 10.0g of the cationic modified asphalt emulsifier of this example and add it to an appropriate amount of water, adjust the pH to 2-3 with hydrochloric acid, and prepare 250g of soap liquid; heat the soap liquid to 65°C and add it to a colloid mil...

Embodiment 3

[0060] (1) Preparation of cationic modified asphalt emulsifier

[0061] Add 24.1g of hexadecylamine (0.10mol) into 22.4g of methanol (0.70mol) to dissolve, then add 84.3g of acrylamidopropyltrimethylammonium chloride monomer (0.204mol), and stir and react at 40°C for 12 hours , the cationic modified asphalt emulsifier can be prepared, which is reserved for the emulsified asphalt test.

[0062] The reaction equation is as follows:

[0063]

[0064] Wherein, in the process of preparing soap liquid, the above-mentioned emulsifier tertiary amine group will be protonated to a certain extent under acidic environment, further enhancing its water solubility.

[0065] (2) Preparation of cationic modified emulsified asphalt

[0066] Take 9.0g of the cationic modified asphalt emulsifier of this example and add it to an appropriate amount of water, adjust the pH to 2-3 with hydrochloric acid, and prepare 250g of soap liquid; heat the soap liquid to 60°C and add it to a colloid mill, ...

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Abstract

The invention discloses a cation modified asphalt emulsifier as well as a preparation method and application thereof. The preparation method of the cation modified asphalt emulsifier comprises the following steps: uniformly mixing long-chain alkyl primary amine, cationic acrylamide monomer and an alcohol solvent for reaction at 40-80 DEG C for 2-12 h to obtain a reaction product, wherein the molarratio of long-chain alkyl primary amine, the cationic acrylamide monomer and the alcohol solvent is 1.00:(2.02-2.10):(5.00-10.00). When the modified asphalt emulsifier is used for preparing soap liquid, protonation can occur under the acidic condition, so that water solubility of the modified asphalt emulsifier is further enhanced; the asphalt emulsifier has the advantages of easily available rawmaterials, mild synthesis condition, simple process and high adaptability to asphalt, and is suitable for large-scale production. The prepared emulsifier has good emulsifying performance, and the prepared emulsified asphalt has high storage stability and good adhesion with aggregate and can meet requirements of practical engineering application.

Description

technical field [0001] The invention relates to a cationic modified asphalt emulsifier, its preparation method and application, and belongs to the intersection field of road industry and applied chemistry. Background technique [0002] Emulsified asphalt is an oil-in-water asphalt emulsion prepared from asphalt and emulsifier under certain process conditions. It has the characteristics of convenient use, environmental protection and energy saving. It can be used in new road construction, such as sticky layer oil, penetrating layer oil, etc.; it can also be used to prepare cold mix, slurry seal layer, etc. Play an increasingly important role in the field of road construction and maintenance. Among them, the core technology of preparing emulsified asphalt is asphalt emulsifier, which has aroused widespread interest of researchers in recent years. [0003] Cationic emulsified asphalt has become a research hotspot and has been widely used because of its strong adhesion to aggr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C237/10C07C231/12C08J3/03C08L95/00C08L53/02C08L9/06
CPCC07C231/12C07C237/10C08J3/03C08J2395/00C08J2409/06C08J2453/02
Inventor 程金梁洪锦祥朱晓斌熊子佳张有福张立华黄冲邓成彭刚龚明辉
Owner JIANGSU SOBUTE NEW MATERIALS
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