Cationic asphalt emulsifier, preparation method thereof and preparation method of asphalt emulsion

A technology of asphalt emulsifier and cationic etherification agent, which is applied in the direction of building components, building insulation materials, construction, etc., can solve the problems of iodine vapor being toxic and not having good application effects, and achieve increased adhesion and HLB Value Range, Effect of Time Dominance on Intensity

Active Publication Date: 2021-11-26
天津康泽威科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the slow-cracking and fast-setting asphalt emulsifiers in the market are amidopolyamines. Most of the lipophilic ends are long-chain fatty acids or modified fatty acids, and the hydrophilic ends are polyamines. The slow-cracking and fast-setting emulsifiers produced by these methods are aimed at High temperature and highly active stones cannot have good application effects, and iodine will be used as a catalyst when making modified fatty acids. Iodine vapor is poisonous and its use is restricted.

Method used

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  • Cationic asphalt emulsifier, preparation method thereof and preparation method of asphalt emulsion
  • Cationic asphalt emulsifier, preparation method thereof and preparation method of asphalt emulsion
  • Cationic asphalt emulsifier, preparation method thereof and preparation method of asphalt emulsion

Examples

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Effect test

Embodiment 1

[0023] A preparation method of cationic asphalt emulsifier, comprising the following steps:

[0024] Add 30 parts of linoleic acid dimer acid into the reaction kettle, stir and heat up to 80°C, add 20 parts of polyethylene polyamine into the kettle, stir and raise the temperature to 150°C within half an hour, keep the temperature for 6-10 hours, until Until there is no distillate in the reaction, then lower the temperature to 60°C, slowly add 5 parts of cationic etherification agent dropwise, and control the temperature not to exceed 80°C, after the dropwise addition, keep the temperature at 70-80°C for 5 hours, and then cool to 50-60°C ℃, slowly add 10 parts of paraformaldehyde, control the temperature not to exceed 70 ℃, after the dropwise addition, keep warm at 70-80 ℃ for 4 hours, then cool to 50-60 ℃ and discharge to obtain cationic asphalt emulsifier.

[0025] Preparation of emulsified asphalt

[0026] Take 10g of the asphalt emulsifier prepared above (accounting for 2....

Embodiment 2

[0034] A preparation method of cationic asphalt emulsifier, comprising the following steps:

[0035] Add 20 parts of palmitic acid dimer acid into the reaction kettle, stir and heat up to 80°C, add 10 parts of triethylenetetramine into the kettle, stir and raise the temperature to 150°C within half an hour, keep the temperature for 6 to 10 hours, until the reaction Until there is no distillate, then lower the temperature to 60°C, slowly add 25 parts of cationic etherification agent dropwise, control the temperature not to exceed 80°C, after the addition is completed, keep it at 70-80°C for 5 hours, then cool to 50-60°C , slowly add 10 parts of paraformaldehyde dropwise, and control the temperature not to exceed 70°C. After the dropwise addition, keep warm at 70-80°C for 4 hours, then cool to 50-60°C and discharge to obtain a cationic asphalt emulsifier.

[0036] Preparation of emulsified asphalt

[0037] Take 11g of the asphalt emulsifier prepared above (accounting for 2.2% o...

Embodiment 3

[0045] A preparation method of cationic asphalt emulsifier, comprising the following steps:

[0046] Add 25 parts of dimer acid into the reaction kettle, stir and raise the temperature to 80°C, add 15 parts of tetraethylenepentamine to the kettle, stir and raise the temperature to 150°C within half an hour, keep the reaction for 6 to 10 hours, until the reaction has no distillation until the product is produced, then lower the temperature to 60°C, slowly add 13 parts of cationic etherification agent dropwise, and control the temperature not to exceed 80°C, after the dropwise addition, keep it at 70-80°C for 5 hours, then cool to 50-60°C, slowly Add 6 parts of paraformaldehyde dropwise, and control the temperature not to exceed 70°C. After the dropwise addition, keep the temperature at 70-80°C for 4 hours, then cool to 50-60°C and discharge to obtain a cationic asphalt emulsifier.

[0047] Preparation of emulsified asphalt

[0048] The preparation steps are the same as in Exam...

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Abstract

The invention discloses a cationic asphalt emulsifier and a preparation method thereof, and a method for preparing an asphalt emulsion by using the cationic asphalt emulsifier. The cationic asphalt emulsifier is formed by taking dimer acid, polyamine, a cationic etherifying agent CHPTAC and paraformaldehyde as raw materials, according to corresponding weight components. The cationic asphalt emulsifier is obtained through amidation reaction and quaternization reaction, the net structure of the asphalt emulsifier is increased through addition of paraformaldehyde, and the bonding strength of asphalt and stone is enhanced. The asphalt emulsifier has excellent emulsifying performance aiming at different types of asphalt, can be widely compatible with various aggregates, is good in wrapping performance, and can adapt to micro-surfacing construction of high-activity stones and high-temperature weather.

Description

technical field [0001] The invention relates to the technical field of asphalt emulsifiers, in particular to a cationic asphalt emulsifier, a method for preparing the asphalt emulsifier, and a method for preparing asphalt emulsion by using the cationic asphalt emulsifier. Background technique [0002] Asphalt emulsifiers are a type of surfactant. Its chemical structure consists of lipophilic and hydrophilic groups. It can be adsorbed on the interface between asphalt particles and water, thereby significantly reducing the free energy of the interface between asphalt and water, making it a surfactant that forms a uniform and stable emulsion. Asphalt emulsifiers can be divided into fast-cracking type, medium-cracking type and slow-cracking type according to their demulsification speed, and the slow-cracking type can be divided into slow-cracking and fast-setting type and slow-cracking and slow-setting type according to the different construction techniques. [0003] At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/50C08G69/48C08G69/34C08J3/03C08L95/00
CPCC08G69/50C08G69/48C08G69/34C08J3/03C08J2395/00Y02A30/30
Inventor 董承静
Owner 天津康泽威科技有限公司
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