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Preparation method of gemini positive ion slow-cracking fast-setting type asphalt emulsifier

A cationic slow-cracking, asphalt emulsifier technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of high surface tension, achieve the effects of increased zeta potential, enhanced mutual repulsion, and enhanced storage stability

Active Publication Date: 2019-03-01
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, several emulsifiers reported above have surface tension γ cmc generally high limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of emulsifier:

[0024] Dissolve 25.56g (0.12mol) of dodecyldimethyl tertiary amine in 15ml of absolute ethanol, add 12.17g (0.12mol) of hydrochloric acid (mass percent concentration 36%), and react at 35°C for 30min. Raise the temperature to 60°C, add 11.10g (0.12mol) of epichlorohydrin, react at 60°C for 6h, cool to room temperature, wash and filter with suction; vacuum dry at 50°C to obtain the quaternary ammonium salt intermediate. Dissolve 6.84g (0.02mol) of the above-mentioned quaternary ammonium salt intermediate in 20ml of isopropanol, and add 2.10g (0.02mol) of sodium carbonate. Raise the temperature to 75°C, add 0.37g (0.005mol) 1,3-propanediamine, react at 75°C for 8 hours, cool to room temperature, filter, wash, and suction filter; vacuum-dry at 50°C to obtain Gemini-type cation slow-cracking and fast-setting type asphalt emulsifier.

[0025] Measuring the surface tension of the above-mentioned Gemini cationic slow-cracking and fast-setting asp...

Embodiment 2

[0030] Preparation of emulsifier:

[0031] Dissolve 28.92g (0.12mol) of tetradecyldimethyl tertiary amine in 15ml of n-butanol, add 12.17g (0.12mol) of hydrochloric acid (mass percent concentration 36%), and react at 35°C for 30min. Raise the temperature to 65°C, add 12.95g (0.14mol) of epichlorohydrin, react at 65°C for 6h, cool to room temperature, wash and filter with suction; vacuum dry at 50°C to obtain the quaternary ammonium salt intermediate. Dissolve 7.40g (0.02mol) of the above-mentioned quaternary ammonium salt intermediate in 20ml of isopropanol, and add 2.10g (0.02mol) of sodium carbonate. Raise the temperature to 70°C, add 0.37g (0.005mol) 1,3-propanediamine, react at 70°C for 8 hours, cool to room temperature, filter, wash, and suction filter; vacuum-dry at 50°C to obtain Gemini-type cation slow-cracking and fast-setting type asphalt emulsifier.

[0032] Measuring the surface tension of the above-mentioned Gemini cationic slow-cracking and fast-setting asphalt...

Embodiment 3

[0036] Preparation of emulsifier:

[0037] Dissolve 32.28g (0.12mol) of hexadecyldimethyl tertiary amine in 20ml of absolute ethanol, add 12.17g (0.12mol) of hydrochloric acid (mass percentage concentration 36%), and react at 35°C for 30min. Raise the temperature to 60°C, add 11.10g (0.12mol) of epichlorohydrin, react at 60°C for 6h, cool to room temperature, wash and filter with suction; vacuum dry at 50°C to obtain the quaternary ammonium salt intermediate. Dissolve 7.96g (0.02mol) of the above-mentioned quaternary ammonium salt intermediate in 20ml of isopropanol, and add 3.45g (0.025mol) of potassium carbonate. Raise the temperature to 80°C, add 0.37g (0.005mol) 1,3-propanediamine, react at 80°C for 8 hours, cool to room temperature, filter, wash, and suction filter; vacuum-dry at 50°C to obtain Gemini-type cation slow-cracking and fast-setting type asphalt emulsifier.

[0038]Measuring the surface tension of the above-mentioned Gemini cationic slow-cracking and fast-set...

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Abstract

The invention provides a preparation method of a gemini positive ion slow-cracking fast-setting type asphalt emulsifier. The preparation method comprises the following steps that long-chain tertiary amine is dissolved in an organic solvent, hydrochloric acid is added, reaction is carried out at 35-40 DEG C for 15-30 min, the temperature is increased to 60-75 DEG C, then epoxy chloropropane is added, and reaction is carried out at 60-75 DEG C for 6-8 h; a quaternary ammonium salt intermediate is obtained; then the quaternary ammonium salt intermediate is dissolved in isopropyl alcohol, a catalyst is added, then the temperature is increased to 70-80 DEG C, 1,3-propane diamine is added, and reaction is carried out at 70-80 DEG C for 8-10 h, so that the gemini positive ion slow-cracking fast-setting type asphalt emulsifier is obtained. According to the prepared emulsifier, the raw materials are easy to obtain, preparation conditions are mild, the process is simple and the surface activityis excellent.

Description

technical field [0001] The invention relates to a preparation method of a gemini-type cationic slow-cracking and fast-setting asphalt emulsifier, belonging to the technical field of fine chemicals. Background technique [0002] With the rapid development of road traffic in our country, some roads have been damaged to varying degrees due to disrepair for a long time, and the problem of road maintenance has been paid more and more attention by relevant departments. In the road maintenance process, in order to reduce the cost, make the maintenance effect remarkable, and be environmentally friendly, emulsified asphalt is applied to the slurry seal and micro-surface repair. Among all kinds of emulsifiers, cationic asphalt emulsifiers are widely used because of their better adhesion with various aggregates. At present, cationic asphalt emulsifiers are mostly fast-cracking and medium-cracking types, which are difficult to meet the needs of slurry seal and micro-surface repair cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L95/00
CPCC08J3/03C08J2395/00
Inventor 王月欣李杰张倩
Owner HEBEI UNIV OF TECH
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