Synthesis and application of lauric acid imidazoline ampholytic surfactant

A surfactant and construction technology, applied in building components, building insulation materials, organic chemistry, etc., can solve the problems that asphalt particles cannot adhere quickly and construction is difficult, so as to improve interfacial activity and oil phase adaptability, Effects of reduced interfacial tension, high interfacial activity and oil compatibility

Inactive Publication Date: 2015-06-10
QINGDAO HUICHENG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But anionic emulsified asphalt is just the opposite. It is negatively charged with the surface of wet aggregate, which makes it repel the same sex. Asphalt particles cannot quickly adhere to the surface of aggregate. It must be done after the water in the emulsion has evaporated, so it is difficult to construct in wet or low temperature seasons

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Take a certain amount of emulsifier in a beaker, add 200ml of water, heat to 50-60°C, stir with a glass rod to dissolve it, and adjust the pH to 2-3 with industrial hydrochloric acid. Then weigh 300g of road petroleum asphalt No. 100, and heat it to 110°C to melt it. Start the colloid mill (preheat it with 60°C hot water before starting), inject the emulsifier aqueous solution into the colloid mill, then slowly pour the asphalt into the colloid mill for emulsification, and put the emulsion into the colloid mill for about one minute. Mineral water bottle, close the colloid mill.

[0021] Weigh 100g of stone, take a certain amount of water and additives, add it to the iron bowl, mix evenly, then weigh a certain amount of emulsified asphalt, pour it into the iron bowl, stir quickly and fully, and start timing, and the record can be mixed time and molding time.

[0022] Emulsification conditions: No. 100 road petroleum asphalt, pH=2~3, emulsifier dosage is 1%~2...

Embodiment 2

[0028] Example 2: Weigh a certain amount of emulsifier in a beaker, add 200ml of water, heat to 50-60°C, stir with a glass rod to dissolve it, and adjust the pH to 2-3 with industrial hydrochloric acid. Then weigh 300AH-90 asphalt and heat it to 120°C to melt it. Start the colloid mill (preheat it with 60°C hot water before starting), inject the emulsifier aqueous solution into the colloid mill, then slowly pour the asphalt into the colloid mill for emulsification, and put the emulsion into the colloid mill for about one minute. Mineral water bottle, close the colloid mill.

[0029] Weigh 100g of stone, take a certain amount of water and additives, add it to the iron bowl, mix evenly, then weigh a certain amount of emulsified asphalt, pour it into the iron bowl, stir quickly and fully, and start timing, and the record can be mixed time and molding time.

[0030] Emulsification conditions: 300AH-90 asphalt, pH=2, emulsifier dosage is 1% to 2%.

[0031] Emulsification effect:...

Embodiment 3

[0036] Example 3: Take a certain amount of emulsifier in a beaker, add 200ml of water, heat to 50-60°C, stir with a glass rod to dissolve it, and adjust the pH to 2-3 with industrial hydrochloric acid. Then weigh 300g of Road Petroleum Asphalt No. 140, and heat it to 100°C to melt it. Start the colloid mill (preheat it with 60°C hot water before starting), inject the emulsifier aqueous solution into the colloid mill, then slowly pour the asphalt into the colloid mill for emulsification, and put the emulsion into the colloid mill for about one minute. Mineral water bottle, close the colloid mill.

[0037] Weigh 100g of stone, take a certain amount of water and additives, add it to the iron bowl, mix evenly, then weigh a certain amount of emulsified asphalt, pour it into the iron bowl, stir quickly and fully, and start timing, and the record can be mixed time and molding time.

[0038] Emulsification conditions: No. 180 road petroleum asphalt, pH = 2, emulsifier dosage is 1% t...

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Abstract

The invention relates to a preparation method of a novel cation asphalt emulsifier, which takes xylene as a solvent, takes lauric acid and divinyl triammonium as raw materials, mol ratio of lauric acid to divinyl triammonium is 2: 3, amidation and cyclodehydration reactions are carried out for 5-6 hours at a temperature of 120-260 DEG C, excessive divinyl triammonium is removed through vacuum distillation to obtain the light-yellow transparent lauric acid imidazoline product, and the yield is no less than 93%. According to the invention, imidazoline product is reacted with a sodium chloroacetate solution to prepare the imidazoline quaternary-ammonium-salt ampholytic surfactant , CMC value of the target products is 4.56*10<-4>mol / L, value is small; and surface tension under critical micelle concentration is 26.43mN / m. The synthesized emulsifier is the slowing breaking asphalt emulsifier, which can be used for a bonding layer, a fog sealing layer and solvent-free cold mixing, and used for recovery / utilization of asphalt and bituminous pavement base stabilization.

Description

technical field [0001] The invention relates to the synthesis of organic chemical products and their practical application in the field of asphalt road pouring, belonging to the fields of fine chemicals and building materials. Background technique [0002] Emulsified asphalt is a liquid asphalt that is formed by asphalt and emulsifier under certain process action to produce oil-in-water or water-in-oil (specifically, which package depends on the type of emulsifier). Emulsified asphalt is a kind of road construction material with low viscosity and good fluidity at room temperature, which is the road asphalt that is usually used at high temperature, and is diffused into water through mechanical stirring and chemical stabilization (emulsification). It can be used at room temperature and can be used with cold and damp stones. Emulsified asphalt is divided into cationic emulsified asphalt, anionic emulsified asphalt and nonionic emulsified asphalt. The bitumen particles of cati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/61C08L95/00C08J3/03C04B24/36
CPCC07D233/61C04B24/36C04B2103/404C08J3/03C08L95/005
Inventor 徐苹潘延坤
Owner QINGDAO HUICHENG PETROCHEM TECH
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