Method for synthesizing amphoteric slow-breaking quick-setting asphalt emulsifier

An asphalt emulsifier, slow cracking and fast setting technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc. problem, to reduce the critical micelle concentration, increase the emulsifying ability, fine and uniform particles

Inactive Publication Date: 2010-05-26
河南新友公路技术有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reason is that the charge strength on the hydrophilic group of the fatty amide is not enough, and the diffusion double layer formed is weak, which affects the storage stability of the asphalt emulsion, causes the segregation of the asphalt emulsion, leads to the different ratio of aspha

Method used

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  • Method for synthesizing amphoteric slow-breaking quick-setting asphalt emulsifier
  • Method for synthesizing amphoteric slow-breaking quick-setting asphalt emulsifier
  • Method for synthesizing amphoteric slow-breaking quick-setting asphalt emulsifier

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Embodiment 1

[0009] Take 68.3g of oleic acid, 13.2g of diethylenetriamine and 18.7g of triethylenetetramine, put them into the reactor, raise the temperature to 160°C and react for 5 hours. Cool down to 55°C, add 25g of 95% ethanol, and stir evenly. Dissolve 27.5g of chloroacetic acid into a 50% aqueous solution and add slowly dropwise. After the dropwise addition, keep the temperature not higher than 60°C for 3 hours. Then react with 22.3g of chloroethanol at 72°C for 2 hours to obtain 202.5g of product, which is reserved for emulsified asphalt test.

[0010] Take 1000g of 70# asphalt and heat it to 130°C. 800g of emulsifier aqueous solution, including 27g of emulsifier, adjust the pH value to 2-3, heat to 55°C, and prepare asphalt emulsion through colloid mill. Obtain uniform and fine cationic slow-cracking and fast-setting emulsified asphalt.

[0011] The performance indicators of emulsified asphalt are as follows:

[0012] Sample serial number

[0013] Through experimenta...

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Abstract

The invention discloses a method for synthesizing a novel amphoteric slow-breaking quick-setting asphalt emulsifier, belonging to the technical field of organic chemical synthesis. The method comprises the following steps of: reacting oleic acid with polyamine to generate acid amide polyamine, and then adding chloroactic acid to generate halogenating reaction to prepare the asphalt emulsifier, wherein the polyamine is the mixture of diethylenetriamine and triethylene tetramine. The water solubility of the hydrophilic radical of the emulsifier synthesized by the process is stronger than those of like emulsifiers, thereby obviously lowering the critical micelle concentration (CMC) value, and the particles of the produced asphalt emulsion are finer, smoother and evener. The emulsifier can effectively prevent asphalt from settling, increases the storage stability of the asphalt emulsion, reasonably regulates the charge ratio, widens the selectivity on stone materials in the application of slurry seal construction, enables the mixing time to be sufficient, and has obvious quick-setting effect and improved project quality.

Description

technical field [0001] The invention relates to a method for synthesizing an asphalt emulsifier, which belongs to the technical field of organic chemical synthesis. Background technique [0002] With the development of the highway industry, the application of emulsified asphalt involves many fields, and the emulsifiers have also appeared in serialization and diversification. Nowadays, the expressway slurry seal and micro-surfacing are popular in my country's highway industry, slow cracking and fast Curdling agents are also widely used. The emulsified asphalt produced by this kind of emulsifier requires sufficient mixing time with the stone, and also has a fast setting effect. At present, fatty amide polyamine emulsifiers are mostly used in the application of emulsifiers for slurry seal and micro-surface in the market, which are highly selective to stone materials during construction. The reason is that the charge strength on the hydrophilic group of the fatty amide is not e...

Claims

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Application Information

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IPC IPC(8): C07C233/36C07C231/02B01F17/22C09K23/22
Inventor 张庆王洪斌蒋凯宋世理白正宇卢小光付娴程秀丽
Owner 河南新友公路技术有限公司
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