Tetraethylenepentamine/ formaldehyde modified lignin-amine asphalt emulsifier synthetic process

A technology of tetraethylenepentamine and lignin, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of thin covering film, reduce interfacial tension, high interfacial activity and oil phase compatibility, and improve interfacial Effect of 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

Although the emulsifying ability of quaternary ammonium salts is equivalent to that of diamines, the covering film formed after combining with stone and other substrates and demulsifying is relatively thin

Method used

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  • Tetraethylenepentamine/ formaldehyde modified lignin-amine asphalt emulsifier synthetic process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 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 No. 150 road petroleum asphalt, 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.

[0023] 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.

[0024] Emulsification conditions: No. 100 road petroleum asphalt, pH=2~3, emulsifier dosage is 2~5%...

Embodiment 2

[0030] 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.

[0031] 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.

[0032] Emulsification conditions: 300AH-90 asphalt, pH=2, emulsifier dosage is 2-5%.

[0033] Emulsification effect: com...

Embodiment 3

[0038] 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.

[0039] 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.

[0040] Emulsification conditions: No. 180 road petroleum asphalt, pH=2, emulsifier dosage is 2-5%. ...

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Abstract

New cationic asphalt emulsifier tetraethylenepentamine / formaldehyde modified lignin-amine can be synthesized by one step reaction of alkali lignin, tetraethylenepentamine and formaldehyde, and best reaction process conditions for synthesis of the asphalt emulsifier can be obtained. The CMC value of the target product is 4.26 x 10<-4>mol / L, and is small. Under the critical micelle concentration (CMC), the surface tension is 29.11mN / M. The synthetic emulsifier is a fast cracking type asphalt emulsifier, and can be widely used in the adhesive layer, fog seal layer, non solvent cold mixing, recycling of asphalt and asphalt pavement substrate stabilizing.

Description

technical field [0001] The invention relates to the synthesis of organic chemical products and their practical application in the field of road infrastructure construction, belonging to the fields of fine chemicals and building materials. Background technique [0002] Bitumen is the residue produced after the distillation of petroleum and coal. Asphalt is used in two forms, emulsified asphalt and hot asphalt. Direct heating of asphalt is hot asphalt. Emulsified asphalt is composed of asphalt, emulsifier, water and other additives. Compared with hot asphalt, emulsified asphalt can be applied at room temperature, has the advantages of better adhesion to stone, low energy consumption and less environmental pollution, and is widely used in roads and waterproofing materials. [0003] Emulsified asphalt is an oil-in-water emulsion, and asphalt emulsifiers can be divided into cationic, anionic, amphoteric and nonionic. Anionic emulsifiers, such as long-chain sulfonates, alkali ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H7/00C08L95/00C08J3/03C04B24/36
Inventor 李博张焕鹏
Owner QINGDAO HUICHENG PETROCHEM TECH
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